Taeniogonalos tricolorisoma
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Ordo: Hymenoptera
Familia: Trigonalyidae
Genus: Taeniogonalos
Name
Taeniogonalos tricolorisoma Chen & van Achterberg & He & Xu, 2014 sp. n. – Wikispecies link – ZooBank link – Pensoft Profile
Type material
Holotype, > (ZJUH) “[China:] 2.VI.2005, Guizhou, Leigong county, 1000 m, Hong-ying Zhang, 20059320”. Paratypes: 1 > (ZJUH) “[China:] Guizhou, Mt. Fanjing, 1300 m, 1.VIII.2001, Yun Ma, 200108311”; 1 > (IZCAS) “[China:] Yunnan, Yongsheng, Delu, 2250 m, 9.VII.1984, Jian-guo Fan, IOZ(E) 1903975”.
Diagnosis
Occipital carina narrow, non-lamelliform and smooth medio-dorsally or nearly so (Fig. 573); outer side of supra-antennal elevations oblique and elevations weakly protruding, 0.3 times as long as scapus (Fig. 573); head dorsally punctate with distinct interspaces (Fig. 573), posteriorly entirely black (Fig. 573) or with small yellowish patches and black behind stemmaticum; mesosoma with limited yellowish pattern, scutellum black or largely so (Fig. 578); metasoma dorsally largely orange-brown except first tergite (Fig. 580); second sternite of > distinctly impressed medio-posteriorly and tri-coloured (Fig. 581); second tergite and sternite densely coarsely punctate (Figs 580, 581); fore wing with subapical dark brown patch and remainder subhyaline (Fig. 576).
Description
Holotype, male, length of body 10.2 mm (of fore wing 8.9 mm).
Head. Antenna with 25 segments, tyloids nearly as long as segment present on 10th–13th segments, on 14th and 15th segments shorter tyloids; frons densely punctate and no smooth interspaces; vertex punctate with large smooth interspaces but patch behind stemmaticum and near eyes with narrow interspaces and distinctly shiny (Fig. 573), with rather long setae; temple largely smooth with sparse fine punctures (Fig. 577); head gradually narrowed behind eyes, eye in dorsal view 1.9 times as long as temple (Fig. 573); occipital carina narrow medio-dorsally; supra-antennal elevations medium-sized (about 0.3 times as long as scapus), outer side oblique and largely smooth except for sparse punctures; clypeus slightly concave and thick medio-ventrally.
Mesosoma. Length of mesosoma 1.3 times its height (Fig. 579); mesopleuron densely and finely rugulose-punctate, with satin sheen; notauli narrow, deep and largely smooth; mesoscutum largely finely and densely reticulate-rugose and with satin sheen, rather contrasting with shiny head (Fig. 578); scutellar sulcus complete, moderately wide and crenulate; scutellum densely reticulate-rugose, convex anteriorly and flattened posteriorly and near level of mesoscutum; metanotum medially protruding, obtuse and densely reticulate-rugose (Fig. 578); propodeum largely reticulate-rugose, smooth and shiny posteriorly and medially densely rugulose (Fig. 578); arched posterior propodeal carina thick lamelliform.
Metasoma. First tergite 0.6 times as long as apically wide and with shallow elliptical depression medially (Fig. 580); second tergite and sternite (as other tergites except first one and sternites) densely and coarsely punctate (Figs 580, 581); second sternite with wide and rather shallow depression medio-posteriorly; genitalia extruded (Fig. 581).
Colour. Black; head anteriorly with extensive pale yellow pattern (Fig. 572); remainder of head black except pale yellow outer orbita and pair of posterior patches on the vertex pale yellow (Fig. 573); mesosoma laterally black except for anterior and dorsal yellow patches of pronotal side; middle lobe of mesoscutum with pair of wide pale yellow patches anteriorly; axilla with large pale yellow patch; metanotum with one large medial and pair of large lateral pale yellow patches; propodeum with pair of large elongate pale yellow patches (Fig. 578); metasoma dorsally orange-brown, first tergite posteriorly largely pale yellow and remainder black, second tergite postero-laterally, fifth tergite laterally and most of sixth tergite (except medial brown patch) pale yellow; metasoma ventrally tricoloured (Fig. 581): first sternite black basally, narrowly orange-brown and yellow apically, second sternite black, medio-posteriorly and laterally orange-brown except for narrow yellow apical margin, remainder of metasoma ventrally mainly orange-brown; palpi and antenna (but ventrally brown) dark brown; patch on middle and hind coxae, fore and middle trochanters largely, anterior stripe on fore femur, base of all femora and apex of fore and middle femora, fore tibia anteriorly, base of middle and hind tibiae pale yellow; remainder of tibiae and tarsi more or less dark brown; pterostigma and apical half of marginal cell of fore wing and area below it dark brown; remainder of wing membrane slightly infuscate.
Female. Unknown.
Variation. Paratype from Guizhou: length of body 8.2 mm and of fore wing 7.0 mm, antenna with 25 segments and tyloids similar to holotype; pale patches of vertex and of mesoscutum slightly smaller than of holotype and orange-brown part of second sternite is smaller. The paratype from Yunnan has the pale patches of vertex and of mesoscutum absent and median patch of metanotum reduced to 2 small pale patches.
Biology
Unknown. Collected in June–August at 1000–2250 m.
Distribution
China (Guizhou, Yunnan).
Etymology
Named after the tricoloured ventral aspect of the metasoma.
Original Description
- Chen, H; van Achterberg, C; He, J; Xu, Z; 2014: A revision of the Chinese Trigonalyidae (Hymenoptera, Trigonalyoidea) ZooKeys, 385: 1-207. doi
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