Streblocera (Eutanycerus) shawi, Shamim & O, 2013

Shamim, Mohammad & O, Published, 2013, The genus Streblocera Westwood (Hymenoptera: Braconidae: Euphorinae) from India, with descriptions of 9 new species, Turkish Journal of Zoology 37 (4), pp. 385-405 : 400-402

4.8. Streblocera (Eutanycerus) shawi sp. nov. (Plate VIII; Figures 65 –70)

Body length: 9.8 mm, Forewing: 7.2 mm, Antenna: 5.6 mm.

Head: Width of head in dorsal view 1.5× its length, 1.7× its height; antennal segments 20; scape long, incrassate, 6× its width and 2.4× height of head, at basal less than a third with a minute spine, ventrally without carinate; flagellum geniculated at seventh flagellomere; first to seventh segments ventrally weakly carinate, sixth to seventh flagellomere formed into a hook-like prominence apicoventrally; prominence on sixth segments smaller than seventh segment; first flagellomere with 1 sensillum, 2.6× as long as wide, almost as long as pedicel and 2× second flagellomere; second flagellomere with 2 sensilla, 1.1× its width, and 0.8× third flagellomere; third flagellomere with 3 sensilla; F 3 – F 4, F 5 – F 6, F 7, F 8 – F 10, F 11 – F 17, and F 18 1.2×, 1.4×, 1.6×, 2×, 1.6×, and 3× their widths, respectively; lengths of scape: length of pedicel to seventh flagellomere: length of antenna from eighth flagellomere to apex = 115: 92: 118; occipital carina incomplete, dorsally shortly interrupted, ventrally joining from hypostomal carina; OOL: POL: OD = 21: 10: 5; length of eye in dorsal view 1.2× its width and 1.1× temple; temple smooth, sparsely setose; roundly narrowed behind eyes; vertex 2.2× its width, smooth, sparsely setose; frons 1.8× as wide as long, medially smooth, below antennal sockets and near eye margin finely striate, sparsely setose; face 1.6× as wide as long, uniformly punctate, densely setose; intertentorial line as long as tentorio-ocular line, tentorial pit deep, small; clypeus 2.3× its height, slightly convex, finely punctate, sparsely setose; length of malar space 1.5× basal width of mandible.

Mesosoma: Length of mesosoma 2× its width, 2.1× its height; pronotal side posteriorly crenulate, remaining smooth; precoxal sulcus narrow, crenulate; mesopleuron medially smooth, remaining finely crenulate; notauli wide, deep, anteriorly crenulate, posteriorly reticulate, rugose with mid-longitudinal carina; middle lobe of mesoscutum smooth, setose; lateral lobes smooth, glabrous; scutellar sulcus wide, deep, smooth, with 1 longitudinal strong carina; scutellum convex, smooth, sparsely setose; side of scutellum reticulate, setose; medioposterior depression wide, oval-shaped; propodeum apically smooth, remaining uniformly reticulate, rugose.

Wings: Forewing 2.6× as long as wide; length of pterostigma 2.8× its width; length of vein 1 – R 1 0.74× length of pterostigma; r emitting behind middle of pterostigma, its length 0.32× width of pterostigma; vein SR1 + 3 – SR slightly curved; m – cu slightly antefurcal; r: 2 – SR: SR1 + 3 – SR = 8: 26: 80; 1 – CU1: 2 – CU1: 3 – CU1 = 5: 30: 10; hindwing 4× as long as wide; 1 – M: 1 – r-m: 2 – SC + R = 10: 15: 15.

Legs: Hind coxa sparsely punctate, setose; lengths of hind femur, tibia, and basitarsus 6.9×, 13.5×, and 10× their widths, respectively; lengths of hind tibial spurs 0.20× hind basitarsus.

Metasoma: Length of metasoma 2.7× its width, 3.1× its height; first metasomal tergite 2.1× its apical width, its surface basally smooth, remaining longitudinally striate; dorsope present; distance across spiracles 0.57× distance from spiracles to apex of first metasomal tergite; ovipositor sheath slender, setose, its length 0.17× forewing, and as long as hind basitarsus, hypopygium sparsely setose; ovipositor long, slightly curved upward apically.

Color: Yellow except stemmaticum black; precoxal sulcus, ovipositor sheath, pterostigma yellowish brown; ovipositor brownish yellow; first metasomal tergite, propodeum brown; ocelli transparent; wing veins pale yellow.

Variation: Length of body 9.6 – 9.7 mm, of forewing 7 mm, of antenna 5.4 – 5.5 mm; width of head in dorsal view 1.4× its length; length of F 7 1.7× its width; lateral lobes of mesoscutum sparsely setose; length of pterostigma 2.7× its width; first metasomal tergite 2× its apical width.

Type material: Holotype, female, INDIA: Uttar Pradesh, Etawah, 26°47′N, 79°02′E, 14, 15. vii. 2008, Coll. M. Sharif ( ZDAMU). Deposited in Insect Collection, Department of Zoology , AMU, Aligarh ( ZDAMU).

Paratypes, 3 females, same as holotypes. INDIA: Uttar Pradesh, Kannauj, 27°03′N, 79°56′E, 22. v. 2010. Coll. M. Shamim ( ZDAMU). Deposited in Insect Collection, Department of Zoology , AMU, Aligarh ( ZDAMU) .

Etymology: The new species is named after the entomologist Dr Scott Richards Shaw, in recognition of his great contribution to the taxonomy of parasitic Hymenoptera .

Discussion: The new species Streblocera (Eutanycerus) shawi sp. nov. is related to Streblocera (Eutanycerus) shujauddini sp. nov. However, it differs by having (1) antennal segments 20 (antennal segments 21 in shujauddini ); (2) scape 6× its width (scape 7.6× its width in shujauddini ); (3) intertentorial line as long as tentorio-ocular line (intertentorial line 1.2× tentorio-ocular line in shujauddini ); (4) clypeus 2.3× its height, finely punctate, sparsely setose (clypeus 2.9× its height, smooth, setose in shujauddini ); (5) side of scutellum reticulate, setose (side of scutellum alutaceous, setose in shujauddini ); (6) distance across spiracles 0.57× distance from spiracles to apex of first metasomal tergite (distance across spiracles 0.93× distance from spiracles to apex of first metasomal tergite in shujauddini ).

The new species Streblocera (Eutanycerus) shawi sp. nov. is also related to Streblocera (E.) okadai Watanabe, 1942 . However, it differs by having (1) surface of first metasomal tergite basally smooth, remaining longitudinally striate (surface of first metasomal tergite longitudinally striate in okadai ); (2) propodeum apically smooth, remaining uniformly reticulate, rugose (propodeum apically smooth, remaining uniformly reticulate, rugose, with irregular transverse carinae in okadai ).