| 1 | | | First discal cell of fore wing absent (Fig. 271); third antennal segment of both sexes about 3 times as long as wide; hind tibia weakly inflated (Fig. 268) | | | Gasteruption subhamatum Pasteels, 1958 |
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| – | | | First discal cell of fore wing present (Figs 16, 77, 117, 159, 180); third antennal segment of both sexes about 1.3–2.5 times as long as wide; hind tibia variable (Figs 13, 27, 74, 114, 156, 177, 203) | | | 2 |
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| 2 | | | Ovipositor present; antenna with 14 segments; (females, species of which no females have been examined are provisionally inserted) | | | 3 |
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| – | | | Ovipositor absent; antenna with 13 segments; (males; species of which no males have been examined are provisionally included in the key) | | | 29 |
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| 3 | | | Apex of ovipositor sheath black or dark brown, if rather yellow or brown apically then pale apical part less than 0.4 times as long as hind basitarsus | | | 4 |
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| – | | | Apex of ovipositor sheath distinctly white or ivory (but rarely pale brown), 0.3–8.0 times as long as hind basitarsus, but brown-yellow or brown and 0.3–1.0 times as long as hind basitarsus in Gasteruption sinarum | | | 17 |
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| 4 | | | Ovipositor sheath 0.3–1.7 times as long as hind tibia and tarsus combined, at most 0.8 times as long as metasoma and 0.6–2.7 times as long as hind tibia; hypopygium comparatively shallowly emarginate posteriorly; occipital carina obsolescent to narrowly lamelliform medio-dorsally (Figs 29, 116, 129, 158, 170, 179, 246, 257, 278) | | | 5 |
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| – | | | Ovipositor sheath 2.0–3.9 times as long as hind tibia and tarsus combined, 1.0–1.9 times as long as metasoma and 3.0–7.0 times as long as hind tibia; hypopygium more or less deeply incised, often slit-like; occipital carina variable, obsolescent or lamelliform medio-dorsally (Figs 53, 76, 108, 322) | | | 13 |
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| 5 | | | Malar space about as long as second antennal segment (= pedicel); posteriorly propodeum with median carina distinctly stronger developed than surrounding rugulosity, but carina may be largely absent; first discal cell of fore wing slightly sinuate posteriorly (♂ Figs 171, 172) | | | Gasteruption oriplanum Kieffer, 1911 |
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| – | | | Malar space 0.1–0.3 times as long as second antennal segment (= pedicellus); median carina of propodeum absent (but sometimes a slightly elevated smooth median line), if present then surrounding reticulate-rugose and carina similarly developed | | | 6 |
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| 6 | | | Interspaces of mesoscutum very finely and densely coriaceous and usually with isolated punctures (but sometimes entirely coriaceous in Gasteruption parvicollarium and latitibia); vertex and frons more or less shiny and largely smooth (Figs 129, 158, 246) or very finely punctulate; propleuron 0.8–1.0 times as long as mesoscutum in front of tegulae and moderately slender (Figs 125, 154, 175, 242); hind basitarsus comparatively short and black (Figs 127, 156, 244) | | | 7 |
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| – | | | Interspaces of mesoscutum more or less irregularly coriaceous and without punctures or densely transversely rugulose or rugose; vertex and frons matt and more or less coriaceous (Figs 29, 116, 257, 278); propleuron 0.7–1.6 times as long as mesoscutum in front of tegulae, robust; head transverse (Figs 29, 116, 278); hind basitarsus usually longer and colour variable (Figs 255, 276) | | | 10 |
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| 7 | | | Hind tibia comparatively slender (Fig. 177); side of pronotum with narrow and weakly crenulate grooves (Fig. 175); propleuron granulate antero-dorsally; hind basitarsus slenderer (Fig. 177); vertex distinctly punctulate or very finely coriaceous | | | Gasteruption parvicollarium Enderlein, 1913 |
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| – | | | Hind tibia inflated (Figs 127, 156, 244); side of pronotum with moderately wide to wide and distinctly crenulate grooves (Figs 125, 154, 242); propleuron rugulose antero-dorsally; hind basitarsus less slender (Figs 127, 156, 244); vertex virtually smooth | | | 8 |
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| 8 | | | Lead statement missing! | | | Mesoscutum predominantly finely coriaceous, at most with some shallow punctures (Fig. 155); head more protruding in lateral and anterior view (Figs 153, 157); head truncate medio-posteriorly or nearly so (Fig. 158); third antennal segment 1.7–1.9 times as long as second segment Gasteruption latitibia sp. n. |
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| – | | | Mesoscutum coarsely (often “crater”-like) punctate (Figs 126, 243); head less protruding in lateral and anterior view (Figs 124, 128, 241, 245); head distinctly emarginate medio-posteriorly (Figs 129, 246); third antennal segment 1.5–2.0 times as long as second segment | | | 9 |
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| 9 | | | Hind tibia about as long as hind femur and trochanter or slightly longer (Fig. 127); head somewhat longer in dorsal (Fig. 129) and lateral (Fig. 124) view; head directly narrowed behind eyes in dorsal view (Fig. 129) | | | Gasteruption formosanum Enderlein, 1913 |
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| – | | | Hind tibia 1.1–1.2 times as long as hind femur and trochanter (Fig. 244); head somewhat shorter in dorsal (Fig. 246) and lateral (Fig. 241) view; head roundly narrowed behind eyes in dorsal view (Fig. 246) | | | Gasteruption sinicola (Kieffer, 1924) |
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| 10 | | | Clypeus with large shallow depression up to dorsal third (Fig. 115); apical antennal segment 1.4–1.5 times as long as third antennal segment; hind basitarsus comparatively short and wide (Fig. 114); mesoscutum rather finely and very irregularly rugulose or rugose (Fig. 113; males have rugose, females anteriorly rugulose) | | | Gasteruption formilis Alekseev, 1995 |
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| – | | | Clypeus at most with a small depression; apical antennal segment at most 1.2 times as long as third antennal segment and its colour similar to colour of medial segments; hind basitarsus comparatively long and narrow (Figs 27, 255, 276) | | | 11 |
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| 11 | | | Propleuron slender and 1.3–1.6 times as long as mesoscutum in front of tegulae (Fig. 253); head conically narrowed behind eyes (Fig. 257); vertex very superficially punctulate and with satin sheen (Fig. 257); ovipositor at least 0.6 times as long as metasoma | | | Gasteruption strigosum sp. n. |
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| – | | | Propleuron robust and 0.7–0.9 times as long as mesoscutum in front of tegulae (Figs 25, 274); head more gradually narrowed behind eyes (Figs 29, 278); vertex densely micro-sculptured and matt (Figs 29, 278); ovipositor 0.3–0.5 times as long as metasoma | | | 12 |
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| 12 | | | Head comparatively wide behind eyes in dorsal view (Fig. 29); OOL 1.3–1.4 times as long as diameter of posterior ocellus (Fig. 29); third antennal segment 1.5–1.7 times as long as second segment; mesopleuron below precoxal sulcus more or less coriaceous or with fine rugulae (Fig. 25) | | | Gasteruption assectator (Linnaeus, 1758) |
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| – | | | Head distinctly narrowed behind eyes in dorsal view (Fig. 278); OOL about as long as diameter of posterior ocellus (Fig. 278); third antennal segment 1.7–1.9 times as long as second segment; mesopleuron below precoxal sulcus more or less rugose-reticulate (Fig. 274), but sometimes mainly coriaceous | | | Gasteruption terebrelligerum Enderlein, 1913 |
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| 13 | | | Vertex of ♀ medio-posteriorly reversed V-shaped emarginate and flat (Fig. 53); vertex smooth, shiny dorsally and long (Fig. 53) | | | Gasteruption bimaculatum Pasteels, 1958 |
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| – | | | Vertex of ♀ truncate medio-posteriorly (Fig. 76) or reversed U-shaped emarginate, shorter and moderately convex (Figs 103, 108); if vertex more or less emarginate, then vertex finely sculptured, with satin sheen and shorter (Fig. 322) | | | 14 |
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| 14 | | | Head reversed U-shaped emarginate in dorsal view (Fig. 108); first metasomal segment orange-brown or black; propodeum finely reticulate | | | Gasteruption dimidiatum Semenov, 1892 |
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| – | | | Head truncate medio-posteriorly or nearly so (Figs 76, 322; cf. ♂ Fig. 101); first metasomal segment black or dark brown; propodeum coarsely reticulate | | | 15 |
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| 15 | | | Hind coxa and femur yellow- or orange-brown; metasoma yellow-brown; mesoscutum rather densely setose laterally (Fig. 73); mesopleuron black in general and reticulate (Fig. 72) | | | 16 |
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| – | | | Hind coxa and femur dark brown or black (Fig. 320); brown in old bleached specimens; metasoma largely dark brown or black; mesoscutum less densely setose (Fig. 319); mesopleuron red-brown and coarsely vermiculate-reticulate (Fig. 318; but rarely only weakly so) | | | Gasteruption varipes (Westwood, 1851) |
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| 16 | | | Hind tibia orange-brown, at most basally dark brown and more swollen (cf. ♂ Fig. 102); hind basitarsus and second segment entirely dark brown (cf. ♂ Fig. 102); head at least partly red-brown dorsally | | | Gasteruption dilutum Semenov, 1892 |
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| – | | | Hind tibia black and subbasally ivory and less swollen (Fig. 74); hind basitarsus mainly ivory and only basally dark brown and second segment medially ivory (Fig. 74); head black dorsally | | | Gasteruption coloratum sp. n. |
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| 17 | | | Head with 1–3 depressions in front of occipital carina, but sometimes shallowly impressed or obsolescent (Gasteruption rufescenticorne) then occipital carina medium-sized and distinctly lamelliform and more or less depressed in front of carina (Figs 84, 207, 300) | | | 18 |
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| – | | | Head flat or evenly convex in front of occipital carina, if with a shallow depression in front of occipital carina then occipital carina narrow and hardly or not lamelliform | | | 20 |
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| 18 | | | Medial depression of vertex comparatively wide, with both lateral depressions in front of occipital carina distinctly impressed (Fig. 300); posterior half of mesoscutum transversely or obliquely rugulose (Fig. 297), in large specimens transversely rugose; propleuron 0.8–1.0 times as long as mesoscutum in front of tegulae; hind basitarsus partly ivory; ivory part of ovipositor sheath 1.8–2.5 times as long as hind basitarsus | | | Gasteruption tournieri Schletterer, 1885 |
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| – | | | Medial depressions of vertex medium-sized and lateral depressions in front of occipital carina not or superficially impressed (Figs 84, 207); posterior half of mesoscutum finely coriaceous or coarsely punctate-rugose (Figs 81, 202); propleuron 1.0–1.2 times as long as mesoscutum in front of tegulae; hind basitarsus partly white or ivory (Fig. 82) or entirely dark brown or black (Fig. 203); ivory part of ovipositor sheath 1.0–4.0 times as long as hind basitarsus | | | 19 |
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| 19 | | | Head in dorsal view gradually roundly narrowed (Fig. 207); hind basitarsus entirely dark brown or black; medio-posteriorly mesoscutum matt and mainly finely coriaceous, at most with some large punctures; mandible largely dark brown or black; ivory or yellow part of ovipositor sheath 1.0–2.1 times as long as hind basitarsus | | | Gasteruption rufescenticorne Enderlein, 1913 |
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| – | | | Head in dorsal view linearly narrowed (Fig. 84); hind basitarsus with ivory band (Fig. 82), rarely, an ivory band absent, sometimes also second and third segments ivory; medio-posteriorly mesoscutum distinctly punctate-rugose or rugose; mandible usually brown-yellow or brown; ivory or yellow part of ovipositor sheath 2.8–4.0 times as long as hind basitarsus | | | Gasteruption corniculigerum Enderlein, 1913 |
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| 20 | | | Ovipositor sheath comparatively wide and about 0.9 times as long as hind tibia, 0.3 times as long as metasoma and 0.2 times as long as body; middle lobe rather protuberant | | | Gasteruption assectoides sp. n. |
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| – | | | Ovipositor sheath comparatively narrow and 1.1–9.0 times as long as hind tibia, 0.6–2.8 times as long as metasoma and 0.4–2.0 times as long as body; middle lobe less protuberant (Figs 64, 143, 192, 218, 287) | | | 21 |
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| 21 | | | Ovipositor sheath 1.8–2.0 times as long as body, 8–9 times as long as hind tibia and 2.7–2.8 times as long as metasoma; ivory apical part of ovipositor sheath 5–8 times as long as hind basitarsus; frons rugose | | | Gasteruption transv'ersiceps Pasteels, 1958 |
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| – | | | Ovipositor sheath 0.4–1.3 times as long as body and 0.6–1.9 times as long as metasoma; pale apical part of ovipositor sheath 0.3–4.0 times as long as hind basitarsus; frons smooth or micro-sculptured | | | 22 |
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| 22 | | | Ovipositor sheath about 0.4 times as long as body and 0.6 times as long as metasoma; ovipositor widened apically and more or less angularly upcurved apically in dead specimens (Fig. 18) | | | Gasteruption angulatum sp. n. |
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| – | | | Ovipositor sheath 0.8–1.3 times as long as body and 1.2–1.9 times as long as metasoma; ovipositor slender and nearly straight or gradually upcurved apically | | | 23 |
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| 23 | | | Pale apical part of ovipositor sheath 3.0–3.5 times as long as hind basitarsus; vertex shiny and largely smooth or finely punctulate; fourth antennal segment of ♀ 1.7–2.3 times as long as third antennal segment; mesoscutum more or less coarsely spaced punctate medio-posteriorly (Fig. 288) | | | Gasteruption tonkinense Pasteels, 1958 |
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| – | | | Pale apical part of ovipositor sheath 0.3–3.0 times as long as hind basitarsus; if 2.8–3.0 times then head dorsally with satin sheen and distinctly finely sculptured (Fig. 68); fourth antennal segment of ♀ 1.2–1.9 times as long as third antennal segment; mesoscutum coriaceous with punctures and medio-posteriorly some transverse rugae (Fig. 230), punctate-rugose or partly reticulate (Figs 4, 144, 193, 219) | | | 24 |
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| 24 | | | Brown-yellow or brown apical part of ovipositor sheath 0.3–1.0 times as long as hind basitarsus; subbasal pale part of hind tibia hardly differentiated (Fig. 220); vertex distinctly convex medio-posteriorly in lateral view and occipital carina non-lamelliform medio-dorsally (Fig. 217); mesoscutum coarsely punctate (Fig. 219) | | | Gasteruption sinarum Kieffer, 1911 |
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| – | | | Pale apical part of ovipositor sheath 1.3–3.0 times as long as hind basitarsus; subbasal pale patch of hind tibia distinctly differentiated; vertex slightly convex medio-posteriorly in lateral view or occipital carina narrow lamelliform medio-dorsally (Figs 2, 63, 228); mesoscutum less coarsely punctate (Figs 144, 230) or rugulose | | | 25 |
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| 25 | | | Anterior half of mesoscutum very finely coriaceous, rarely very finely transversely rugulose, and with at most some shallow punctures; head dorsally more or less shiny and smooth; head directly narrowed posteriorly in dorsal view (Figs 147, 233) | | | 26 |
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| – | | | Anterior half of mesoscutum distinctly less finely coriaceous and with distinct punctures; head dorsally with satin sheen and micro-sculptured; head less narrowed in dorsal view (Figs 7, 68, 196) | | | 27 |
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| 26 | | | Fourth antennal segment of ♀ 1.3–1.5 times as long as third antennal segment (cf. ♂ Fig. 151); head somewhat less narrowed in dorsal view, resulting in a less transverse head (Fig. 147); mesoscutum usually more punctate (Fig. 144) | | | Gasteruption japonicum Cameron, 1888 |
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| – | | | Fourth antennal segment of ♀ 1.7–1.9 times as long as third antennal segment (Fig. 236); head more narrowed in dorsal view, resulting in a more transverse head (Fig. 233); mesoscutum usually hardly or not punctate (Fig. 230) | | | Gasteruption sinepunctatum sp. n. |
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| 27 | | | Pale apical part of ovipositor sheath 2.8–3.0 times as long as hind basitarsus; occipital carina medio-dorsally narrow and non-lamelliform (Fig. 63); OOL about 1.6 times diameter of posterior ocellus (Fig. 68) | | | Gasteruption birmanense Pasteels, 1958 |
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| – | | | Pale apical part of ovipositor sheath 1.3–2.3 times as long as hind basitarsus; occipital carina medio-dorsally narrowly to medium-sized lamelliform (Figs 2, 191); OOL 1.1–1.4 times diameter of posterior ocellus (Figs 7, 196), but 1.6 times in Gasteruption amoyense | | | 28 |
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| 28 | | | Head elliptical in dorsal view (cf. Fig. 7); eyes more elongate elliptical in anterior view (cf. Fig. 6) | | | Gasteruption amoyense Pasteels, 1958 |
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| – | | | Head trapezoid in dorsal view (Fig. 196); eyes somewhat less elongate in anterior view (Fig. 195) | | | Gasteruption poecilothecum Kieffer, 1911 |
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| 29 | | | |
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| – | | | Head flat or evenly convex in front of occipital carina, without any depression; occipital carina usually narrow (Figs 47, 260; cf. ♀ Fig. 265) | | | 33 |
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| 30 | | | Medio-dorsal depression in front of occipital carina absent or nearly so; occipital carina comparatively narrow (cf. Figs 286, 292) | | | Gasteruption tonkinense Pasteels, 1958 |
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| – | | | Medio-dorsal depression in front of occipital carina shallow and medium-sized to deep and large; occipital carina comparatively wide (Figs 92, 216, 304) | | | 31 |
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| 31 | | | Medial depressions comparatively deep, large and lateral depressions in front of occipital carina distinctly impressed (Fig. 304); posterior half of mesoscutum transversely or obliquely rugulose (Fig. 305), in large specimens transversely rugose | | | Gasteruption tournieri Schletterer, 1885 |
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| – | | | Medial depressions of vertex comparatively shallow, medium-sized and lateral depressions in front of occipital carina not or superficially impressed (Figs 92, 216); posterior half of mesoscutum finely coriaceous or coarsely punctate-rugose (Figs 89, 211) | | | 32 |
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| 32 | | | Head gradually roundly narrowed behind eyes and medio-posteriorly semi-circularly emarginate (Fig. 215); anterior half of mesoscutum matt and mainly coriaceous, with some minute punctures; occipital carina medium-sized (Fig. 209); lateral depressions in front of occipital carina absent (Fig. 216) | | | Gasteruption rufescenticorne Enderlein, 1913 |
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| – | | | Head linearly narrowed behind eyes, trapezoid and medio-posteriorly truncate (Fig. 92); anterior half of mesoscutum with satin sheen and densely finely rugulose, punctate (Fig. 89) or punctate-rugose; occipital carina comparatively wide (Fig. 87); lateral depressions in front of occipital carina shallowly impressed (Fig. 92) or obsolescent | | | Gasteruption corniculigerum Enderlein, 1913 |
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| 33 | | | |
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| – | | | First discal cell of fore wing present (Figs 58, 98, 140, 171, 328) | | | 34 |
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| 34 | | | Head distinctly emarginate medio-posteriorly (Figs 61, 139); posteriorly vertex flat in lateral view (but less so in Gasteruption formosanum and Gasteruption dimidiatum), smooth or finely sculptured, shiny and comparatively long (Figs 55, 61) | | | 35 |
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| – | | | Head subtruncate medio-posteriorly; posteriorly vertex near occipital carina moderately convex in lateral view (Figs 166, 182, 325; cf. ♀ Figs 10, 63, 111, 142, 153, 217, 228, 241, 273, 309); if more or less emarginate, then vertex finely sculptured, with satin sheen, and shorter (Figs 19, 33, 101, 119, 251) | | | 37 |
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| 35 | | | Hind tibia about as long as hind femur and trochanter and distinctly swollen (Fig. 136); mesoscutum densely and coarsely punctate and interspaces coriaceous (Fig. 135) | | | Gasteruption formosanum Enderlein, 1913 |
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| – | | | Hind tibia 1.1–1.2 times as long as hind femur and trochanter and less swollen (Fig. 62; cf. ♀ Fig. 106); mesoscutum regularly transversely rugose or rugulose, sometimes sculpture obsolescent or punctate and interspaces partly smooth | | | 36 |
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| 36. | | | Head comparatively short in dorsal view (cf. ♀ Fig. 108); mesoscutum coarsely punctate and no rugae (cf. ♀ Fig. 105); first metasomal segment orange-brown; posteriorly vertex rather convex in lateral view (cf. ♀ Fig. 103) | | | Gasteruption dimidiatum Semenov, 1892 |
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| – | | | Head long in dorsal view (Fig. 61); mesoscutum irregularly transversely rugose or rugulose, sometimes very superficially so; first metasomal segment black or dark brown; posteriorly vertex flat in lateral view (Fig. 55) | | | Gasteruption bimaculatum Pasteels, 1958 |
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| 37 | | | Pronotum and mesopleuron very coarsely vermiculate-reticulate and mesoscutum laterally more or less dark red-brown; temple nearly as long as eye in dorsal view or longer (Fig. 331) | | | Gasteruption varipes (Westwood, 1851) |
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| – | | | Pronotum and at least dorsal half of mesopleuron largely coriaceous and usually black; temple shorter than eyes (Figs 119, 152, 239, 251) or subequal (Figs 187, 260) | | | 38 |
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| 38 | | | Hind basitarsus comparatively short to medium-sized and somewhat wider (Figs 123, 189, 249) | | | 39 |
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| – | | | Hind basitarsus comparatively long and narrow (Figs 23, 36, 102, 150, 169, 225, 240, 263) | | | 41 |
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| 39 | | | Mesoscutum finely coriaceous or rugulose, without small punctures; head long in dorsal view (Fig. 187); notauli narrow (Fig. 184) | | | Gasteruption parvicollarium Enderlein, 1913 |
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| – | | | Mesoscutum distinctly punctate or irregularly rugose (Fig. 120; cf. ♀ Fig. 243); head shorter in dorsal view (Figs 119, 251); notauli moderately wide (Fig. 120; cf. ♀ Fig. 243) | | | 40 |
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| 40 | | | Mesoscutum “crater-like” punctate (cf. ♀ Fig. 243); clypeus without distinct depression (cf. ♀ Fig. 245) | | | Gasteruption sinicola (Kieffer, 1924) |
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| – | | | Mesoscutum irregularly rugose (Fig. 120); clypeus more or less triangularly depressed ventrally (Fig. 122) | | | Gasteruption formilis Alekseev, 1995 |
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| 41 | | | Mesoscutum very finely and densely coriaceous, elongate (similar toGasteruption parvicollarium but more evenly convex)and propleuron 0.9–1.0 times as long as mesoscutum in front of tegulae | | | 42 |
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| – | | | Mesoscutum more coarsely sculptured or largely smooth, if densely coriaceous then propleuron 0.7–0.8 times as long as mesoscutum in front of tegulae (Figs 167, 168) | | | 43 |
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| 42 | | | Third antennal segment normal, slender and distinctly longer than fourth segment (Fig. 151); head some less narrowed in dorsal view, resulting in a less transverse head (Fig. 152); mesoscutum usually more punctate (cf. ♀ Fig. 144) | | | Gasteruption japonicum Cameron, 1888 |
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| – | | | Third antennal segment shortened, wide and hardly longer than fourth segment (Fig. 238); head more narrowed in dorsal view, resulting in a more transverse head (Fig. 239); mesoscutum usually hardly or not punctate (cf. ♀ Fig. 230) | | | Gasteruption sinepunctatum sp. n. |
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| 43 | | | Propleuron 1.3–1.6 times as long as mesoscutum in front of tegulae (cf. ♀ Fig. 253) | | | Gasteruption strigosum sp. n. |
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| – | | | Propleuron 0.7–1.1 times as long as mesoscutum in front of tegulae (Fig. 167) | | | 44 |
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| 44 | | | Malar space about as long as second antennal segment (= pedicellus), head in anterior view protruding below lower level of eyes by about basal width of mandible and mandibular condylus distinctly below lower level of eyes, in lateral viewcondylarincision of malar space remains far removed from eye (Fig. 166); vertex matt, micro-sculptured | | | Gasteruption oriplanum Kieffer, 1914 |
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| – | | | Malar space distinctly shorter than second antennal segment, head in anterior view slightly protruding below lower level of eyes by less than basal width of mandible and mandibular condylus near lower level of eyes (Figs 35, 283), in lateral viewcondylarincision of malar space close to eye (cf. ♀ Figs 24, 63, 191, 217, 273); vertex variable | | | 45 |
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| 45 | | | Mesoscutum evenly coriaceous, without punctures of rugulae; head comparatively transverse and weakly narrowed posteriorly (Figs 19, 33) | | | 46 |
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| – | | | Mesoscutum at least with some punctures or rugae posteriorly; head variable, if transverse then more or less narrowed posteriorly in dorsal view (Figs 227, 281; cf. ♀ Figs 4, 68, 196, 315) | | | 47 |
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| 46 | | | |
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| 47 | | | Mesoscutum largely punctate or rugose (Fig. 97; cf. ♀ Figs 65, 73, 219, 311); mesoscutum interspaces between punctures smooth or punctulate-coriaceous; mesosoma laterally and ventrally brown or red-brown | | | 48 |
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| – | | | Mesoscutum finely coriaceous or densely rugulose (Figs 162, 282; cf. ♀ Figs 4, 193), at most with some shallow punctures or rugae posteriorly; mesosoma laterally and ventrally mainly black or dark brown | | | 52 |
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| 48 | | | |
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| – | | | Frons coriaceous or largely smooth | | | 49 |
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| 49 | | | Hind coxa and femur yellow- or orange-brown; metasoma yellow-brown; mesoscutum rather densely setose laterally (Fig. 97; cf. ♀ Fig. 73) | | | 50 |
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| – | | | Hind coxa and femur dark brown or black (Fig. 225; cf. ♀ Fig. 66); metasoma largely dark brown or black; mesoscutum less densely setose (cf. ♀ Figs 65, 219) | | | 51 |
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| 50 | | | Hind tibia more swollen, orange-brown and basally widely ivory (Fig. 102); hind basitarsus and second segment dark brown or brown (Fig. 102); head at least partly red-brown or dark brown dorsally | | | Gasteruption dilutum Semenov, 1892 |
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| – | | | Hind tibia less swollen, black and subbasally ivory (cf. ♀ Fig. 74); hind basitarsus mainly ivory and only basally dark brown and second segment medially ivory (cf. ♀ Fig. 74); head black dorsally | | | Gasteruption coloratum sp. n. |
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| 51 | | | |
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| 52 | | | Frons and vertex shiny and smooth; mesoscutum with some punctures medio-posteriorly (Fig. 162) | | | Gasteruption latitibia sp. n. |
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| – | | | Frons and vertex matt or with satin sheen, micro-sculptured; mesoscutum with some rugae medio-posteriorly (cf. ♀ Figs 4, 193), but punctate in Gasteruption terebrelligerum | | | 53 |
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| 53 | | | Mesoscutum coriaceous and only posteriorly some punctures (Fig. 282); head directly narrowed (Fig. 281) | | | Gasteruption terebrelligerum Enderlein, 1913 |
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| – | | | Mesoscutum distinctly transversely rugose medio-posteriorly (cf. ♀ Figs 4, 193); head gradually narrowed (cf. ♀ Figs 7, 196) | | | 54 |
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| 54 | | | Head elliptical in dorsal view (cf. ♀ Fig. 7); eyes more elongate elliptical (cf. ♀ Fig. 2) | | | Gasteruption amoyense Pasteels, 1958 |
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| – | | | Head trapezoid in dorsal view (cf. ♀ Fig. 196); eyes somewhat less elongate (cf. ♀ Fig. 191) | | | Gasteruption poecilothecum Kieffer, 1911 |
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