Streblocera (Eutanycerus) hayati, 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 : 392-394

4.4. Streblocera (Eutanycerus) hayati sp. nov. (Plate IV; Figures 25 –34)

Body length: 7.7 mm, Forewing: 6.2 mm, Antenna: 6.9 mm.

Head: Width of head in dorsal view 2× its length, 2.2× its height; antennal segments 19; scape long, incrassate, 8.3× its width and 2.8× height of head, at basal without horn; flagellum geniculated at seventh flagellomere; first to seventh flagellomere ventrally without carinate, seventh flagellar flagellomere formed into a small hook-like prominence apicoventrally; prominence on sixth segment smaller than that on seventh segment; first flagellomere without sensillum, 3× as long as wide, 1.2× as long as pedicel and 2× second flagellomere; second flagellomere with 1 sensillum, 1.5× its width, almost equal to third flagellomere; third flagellomere with 2 sensilla; F 4 – F 5, F 6 – F 7, F 8, F 17, F 9, F 11, F 12 – F 16, and F 17 2×, 1.3×, 1.6×, 2.5×, 1.6×, 2×, 1.6×, and 3× their widths, respectively; length of scape: length of pedicel to seventh flagellomere: length of antenna from eighth flagellomere to apex = 100: 67: 112; occipital carina incomplete, dorsally shortly interrupted; ventrally separated from hypostomal carina; OOL: POL: OD = 18: 10: 5; length of eye in dorsal view 1.2× its width and 1.5× temple; temple roundly narrowed behind eyes, temple and vertex smooth, setose; vertex 3× as wide as long, smooth, sparsely setose; frons 1.9× as wide as long, smooth; face 1.2× as wide as long, densely setose, due to insertion of setae somewhat punctate; intertentorial line 2× tentorio-ocular line, tentorial pit deep, large; clypeus almost 3× (35: 12) height, smooth, flat, finely punctate; length of malar space 1.6× basal width of mandible.

Mesosoma: Length of mesosoma 1.9× its width, 2.5× its height; pronotal side anteriorly and posteriorly crenulate, remaining smooth; precoxal sulcus wide, crenulate; mesopleuron anteriorly somewhat finely crenulate, remaining smooth, notauli deep, anteriorly crenulate, posteriorly widely rugose; middle lobe of mesoscutum setose, lateral lobes smooth; scutellar sulcus deep smooth, setose with 1 longitudinal strong carina; scutellum smooth, slightly convex; side of scutellum reticulate, rugose, setose; medioposterior depression small, somewhat oval-shaped; propodeum basally reticulate, rugose, apically rugose with short median carina.

Wings: Forewing 2.7× as long as wide; length of pterostigma 3.8× its width; length vein 1 – R 1 0.86× length of pterostigma; r emitting just middle of pterostigma, its length 0.4× width of pterostigma; vein SR1 + 3 – SR slightly curved; m – cu slightly antefurcal; r: 2 – SR: SR1 + 3 – SR = 5: 14: 55; 1 – CU1: 2 – CU1: 3 – CU1 = 3: 13: 7; hindwing 4.3× as long as wide; 1–M: 1 – r-m: 2 – SC + R = 5: 10: 8.

Legs: Hind coxa smooth, sparsely setose, 1.3× as long as wide; lengths of hind femur, tibia, and basitarsus 7.2×, 10×, and 8× their widths, respectively; lengths of hind tibial spurs 0.09× and 0.12× hind basitarsus.

Metasoma: Length of metasoma 2.9× its width and 3.3× its height; first metasomal tergite 2× its apical width, its surface uniformly longitudinally striate; dorsope present; distance across spiracles 0.42× distance from spiracles to apex of first metasomal tergite; ovipositor sheath slender, its length 0.17× forewing, 1.2× hind basitarsus, hypopygium setose; ovipositor long, distinctly curved upward subapically with a small dorsal notch.

Color: Yellow except stemmaticum black; first metasomal tergite, ovipositor sheath brown; propodeum, tarsus, basitarsus, telotarsus, temple yellowish brown; eyes grayish; maxillary palp and labial palp pale yellow; ocelli transparent; wing veins brown.

Variation: Length of body 7.9 mm, of forewing 6.5 mm, of antenna 7.5 mm; scape 8× its width; OOL: POL: OD = 19: 9: 6; clypeus 2.8 – 2.9× its height, scutellum sparsely punctate; length of vein 1– R 1 0.84 – 85× length of pterostigma; lengths of hind tibial spurs 0.08× and 0.11× hind basitarsus.

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

Paratypes, 4 females, same as holotypes. INDIA: Uttar Pradesh, Etawah, 26°47′N, 79°02′E, 14, 22. v. 2006. Coll. M. Sharif & M. Shamim ( ZDAMU). Deposited in Insect Collection, Department of Zoology , AMU, Aligarh ( ZDAMU) .

Etymology: The new species is named after Dr M Hayat, in recognition of his contributions to the taxonomy of parasitic Hymenoptera .

Discussion: The new species Streblocera (Eutanycerus) hayati sp. nov. is closely related to Streblocera (Eutanycerus) achterbergi sp. nov., but it differs by having (1) antennal segments 19 (antennal segments 20 in achterbergi ); (2) scape at basal without horn (scape at basal quarter with a minute spine in achterbergi ); (3) second flagellomere with 1 sensillum, 1.5× its width (second flagellomere without sensillum, 1.7× its width in achterbergi ); (4) intertentorial line 2× tentorio-ocular line (intertentorial line 1.5× tentorio-ocular line in achterbergi ); (5) length of forewing vein r 0.41× width of pterostigma (length of forewing vein r 0.27× width of pterostigma in achterbergi ); (6) first metasomal tergite 2× its apical width, its surface uniformly longitudinally striate (first metasomal tergite 2.4× its apical width, its surface apically and basally smooth, remaining longitudinally striate in achterbergi ).

The new species Streblocera (Eutanycerus) hayati sp. nov. is also related to Streblocera (Eutanycerus) octaba Chou, 1990 . However, it differs in having (1) occipital carina dorsally shortly interrupted (occipital carina dorsally widely interrupted in octaba ); (2) propodeum basally reticulate, rugose, apically rugose with short median carina (propodeum slightly smooth anteriorly and remainder rugose in octaba ); (3) flagellum geniculated at seventh flagellomere (flagellum geniculated at eighth flagellomere in octaba ).