Parallobracon prolatus
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Ordo: Hymenoptera
Familia: Braconidae
Genus: Parallobracon
Name
Parallobracon prolatus Li & Achterberg & Chen, 2020 sp. nov. – Wikispecies link – ZooBank link – Pensoft Profile
Material examined
Holotype: ♀, China, Zhejiang Prov., Hangzhou, 26.VI.1935, Zhu Ruzuo (ZJUH). Paratype. 1♀1♂, China, Zhejiang Prov., Hangzhou, 17.VI.1934, Zhu Ruzuo (ZJUH).
Diagnosis
T II of the new species is similar to that of Cyanopterus oriens Belokobylskij, 2000, from Far East Russia (e.g., size and shape of medio-basal area and with pair of diverging depressions), but can be separated by having first discal cell of fore wing parallel-sided and vein 1-SR+M straight (widened basally and vein 1-SR+M weakly bent in C. oriens), vein 1r-m of hind wing ca. 5 × longer than vein 2-SC+R (ca. equal in C. oriens), vein 1-SR of fore wing distinctly oblique and pointing basad of vein cu-a (less oblique and pointing to vein cu-a in C. oriens), second submarginal cell of fore wing widened distally (parallel-sided in C. oriens) and apex of scapus strongly protruding ventrally (slightly protruding in C. oriens).
Description
Holotype, ♀, length of body 7.6 mm, of fore wing 7.7 mm, of ovipositor sheath 4.9 mm. Head. Antenna incomplete, only remaining with scapus and pedicellus; malar suture with dense short setae (Fig. 28i); clypeus height: inter-tentorial distance: tentorio-ocular distance = 3: 6: 7; clypeus with sparse short setae; eye weakly emarginated (Fig. 28g); face weakly convex medially and weakly granulate, with some sparse punctures laterally (Fig. 28g); eye height: shortest distance between eyes: head width = 17: 20: 40; frons largely smooth, weakly concave behind antennal sockets, with a strong median groove (Fig. 28h); vertex smooth, but with some sparse short setae; minimum distance between posterior ocelli: minimum diameter of elliptical posterior ocellus: minimum distance between posterior ocellus and eye = 1: 1: 2; temples largely glabrous except for a few short setae, and subparallel behind eyes (Fig. 28h).
Mesosoma. Length of mesosoma 1.9× its height (Fig. 28c); notauli impressed anteriorly half (Fig. 28d); mesoscutum smooth, with a few sparse setae (Fig. 28d); scutellar sulcus narrow, moderately deep, and with crenulae (Fig. 28d); scutellum with sparse short setae posteriorly; metanotum strongly convex medially (Fig. 28d); propodeum smooth, without longitudinal carinae or groove, with sparse setae medially, and with dense long setae laterally (Fig. 28d).
Wings. Fore wing (Fig. 28a): SR1: 3-SR: r = 21: 13: 5; 1-SR+M more or less straight, and 1.9× longer than 1-M; 2-SR: 3-SR: r-m = 14: 26: 13; angle between 1-SR and C+SC+R ca. 75°; m-cu straight; 2-SR+M rather short; cu-a slightly postfurcal. Hind wing (Fig. 28b): SC+R1: 2-SC+R: 1r-m = 17: 3: 13.
Legs. Length of fore femur: tibia: tarsus = 27: 31: 45; length of hind femur: tibia: basitarsus = 37: 53: 21; length of femur, tibia and basitarsus of hind leg 3.5, 6.6 and 5.3× their maximum width, respectively (Fig. 28f); hind tibial spurs 0.35 and 0.40 × as long as hind basitarsus.
Metasoma. Length of T I 1.1× its apical width, median area convex, anteriorly half smooth and posteriorly half coarsely sculptured (Fig. 28j); lateral grooves of T I sparsely crenulate (Fig. 28j); T II largely smooth except medially (Fig. 28e); triangular medio-basal area of T II large and smooth, with a few short oblique carinae connected laterally, and acute apically, but not attached with medio-longitudinal carina; antero-lateral areas of T II developed and smooth, anterior grooves moderately wide and sparsely crenulate (Fig. 28e); second suture deep and crenulate, wide and weakly curved medially, narrow laterally (Fig. 28e); T III with antero-lateral areas; T III–V with crenulate transverse subposterior groove (Fig. 28e); T III–VII largely smooth, and with some spare short setae posteriorly; hypopygium acute apically, not reaching level of apex of metasoma; ovipositor sheath 0.6× as long as fore wing.
Colour. Head and mesosoma largely reddish yellow (Fig. 27); antenna, eye, mandible apically, stemmaticum, propodeum medially and posteriorly, blackish brown (Fig. 28d, g, h); fore legs (but claws dark brown) reddish yellow, middle and hind legs dark brown (Fig. 28f); metasoma and ovipositor sheath black brown (Figs 27, 28e); wing membrane greyish brown, pterostigma and veins dark brown (Fig. 28a, b).
Variation. Length of body of female 7.6–7.7 mm, of fore wing of female 7.7 mm, and of ovipositor sheath 4.2–4.9 mm; antenna of paratype female incomplete, with 30 antennomeres remaining; third antennomere 1.7× longer than its maximum width, 1.2 and 1.3× longer than fourth and fifth, respectively, the latter 1.3× longer than wide; ovipositor sheath 0.5–0.6× as long as fore wing.
Male. Length of body of male 7.8 mm, of fore wing of male 7.9 mm; antenna of male with 44 antennomeres; Length of mesosoma 1.7× its height; fore wing vein cu-a interstitial; length of T I 1.0× its apical width; other characters as in female.
Biology
Unknown.
Distribution
China (Zhejiang).
Etymology
Named after the long and slender scapus which strong elongated ventrally: prolatus is Latin for elongated.
Original Description
- Li, Y; Achterberg, C; Chen, X; 2020: A new genus and eight newly recorded genera of Braconinae Nees (Hymenoptera, Braconidae) from China, with descriptions of fourteen new species ZooKeys, 1038: 105-178. doi
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