Streblocera (Eutanycerus) achterbergi, 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 : 387-388

4.1. Streblocera (Eutanycerus) achterbergi sp. nov. ( Plate I ; Figures 1–10)

Body length: 6.9 mm, Forewing, 5.4 mm, Antenna: 6.3 mm.

Head: Width of head in dorsal view 1.4× its length, 1.6× its height; antennal segments 20; scape long, incrassate, 9.4× its width and 2.1× height of head, at basal quarter with a minute spine, ventrally weakly carinate, flagellum geniculated at seventh flagellomere; first to seventh segments ventrally weakly carinate, seventh flagellomere formed into a small hook-like prominence apicoventrally; first flagellomere without sensillum, 2.5× as long as wide, 0.8× as long as pedicel and 1.2× as long as second flagellomere; second flagellomere without sensillum, 1.7× its width, almost equal to third flagellomere; third flagellomere with 1 sensillum, 2× its width; F 4 – F 13, F 14 – F 17, and F 18 2×, 1.6×, and 2.6× their widths, respectively; length of scape: length of pedicel to seventh flagellomere: length of antenna from eighth flagellomere to apex = 85: 71: 100; occipital carina complete; ventrally separated from hypostomal carina; OOL: POL: OD = 16: 9: 3; length of eye in dorsal view 1.1× its width and 0.9× temple; temple smooth, sparsely setose; temple first parallel sided, roundly narrowed behind eyes; vertex 2.9× its width, smooth, sparsely setose; frons 2.2× as wide as long, smooth, near eye margin sparsely setose; face 1.7× as wide as long, densely setose, punctate; intertentorial line 1.5× tentorio-ocular line, tentorial pit deep, large; clypeus 2× its height, smooth, flat, setose; length of malar space 1.3× basal width of mandible.

Mesosoma: Length of mesosoma 1.8× its width and its height; pronotal side anteriorly, medially, and posteriorly finely crenulate, remaining smooth; precoxal sulcus wide, crenulate; mesopleuron anteriorly, posteriorly, and dorsally crenulate, remaining smooth; notauli wide, deep, anteriorly crenulate, posteriorly rugose with indistinctly mid-longitudinal carina; middle lobe of mesoscutum setose, lateral lobes smooth; scutellar sulcus wide, deep, smooth, with 1 longitudinal strong carina; scutellum smooth, flat; side of scutellum reticulate, rugose; medioposterior depression large, oval-shaped; propodeum basally reticulate, rugose, apically rugose with short median carina.

Wings: Forewing 2.6× as long as wide; length of pterostigma 3.1× its width; length of vein 1 – R 1 0.71× length of pterostigma; r emitting just at middle of pterostigma, its length 0.27× width of pterostigma; vein SR1 + 3–SR slightly evenly curved; m – cu interstitial; r: 2 – SR: SR1 + 3 – SR = 5: 19: 60; 1 – CU1: 2 – CU1: 3 – CU1 = 4: 18: 7; hindwing 3.1× as long as wide; 1 – M: 1 – r – m: 2 – SC + R = 9: 11: 9.

Legs: Hind coxa sparsely punctate, setose; lengths of hind femur, tibia, and basitarsus 6.5×, 11×, and 8× their widths, respectively; lengths of hind tibial spurs 0.15× and 0.17× hind basitarsus.

Metasoma: Length of metasoma 2.5× its width and its height; first metasomal tergite 2.4× its apical width, its surface apically and basally smooth, remaining longitudinally striate; dorsope present; distance across spiracles 0.62× distance from spiracles to apex of first metasomal tergite; ovipositor sheath slender, setose, its length 0.16× forewing, 0.87× hind basitarsus; hypopygium setose; ovipositor long, distinctly curved upward.

Color: Yellow except stemmaticum black; first metasomal tergite, ovipositor sheath brown; flagellomere first to ninth, ovipositor brownish yellow; wing veins yellowish brown; eyes grayish; ocelli transparent.

Variation: Length of body 6.4 – 6.9 mm, of forewing 5.5 mm, of antenna 6.5 mm; width of head in dorsal view 1.3× its width; scape 9.3× its width; length of vein 1 – R 1 0.69× length of pterostigma; r: 2 – SR: SR1 + 3 – SR = 6: 20: 65; face yellowish brown.

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

Paratypes, 5 females, same as holotypes. INDIA: Madhya Pradesh, Etawah, 20. vi. 2010, 26°47′N, 79°02′E, 14 Coll. Mohammad Shamim. Deposited in Insect Collection, Department of Zoology , AMU, Aligarh ( ZDAMU) .

Etymology: The new species is named after the wellknown entomologist Professor Cornelis van Achterberg, in recognition of his great contribution to the taxonomy of parasitic Hymenoptera .

Discussion: This new species, Streblocera (Eutanycerus) achterbergi sp. nov., is related to Streblocera (Eutanycerus) etawahiana sp. nov. However, it differs by having (1) antennal segments 20 (antennal segments 21 in etawahiana ); (2) scape 9.4× its width (scape 8× its width in etawahiana ); (3) frons smooth, near eye margin sparsely setose (frons medially smooth, remaining striate, near eye margin punctate with hairs in etawahiana ); (4) intertentorial line 1.5× tentorio-ocular line (intertentorial line 0.75× tentorio-ocular line in etawahiana ); (5) clypeus smooth (clypeus sparsely granulate in etawahiana ); (6) length of mesosoma 1.8× its width (length of mesosoma 2.1× its width in etawahiana ).

The new species Streblocera (Eutanycerus) achterbergi sp. nov. is also related to Streblocera (E.) distincta Chen and Achterberg, 1997 . However, it differs by having (1) antennal segments 20 (antennal segments 24 in distincta ); (2) length of malar space 1.3× basal width of mandible (length of malar space 0.5× basal width of mandible in distincta ); (3) third flagellar segment with 1 sensillum (third flagellar segment with 4 sensilla in distincta ); (4) intertentorial line 1.5× tentorio-ocular line (intertentorial line 3× tentorio - ocular line in distincta ).

Figures

Plate I (Figures 1–10): Streblocera (Eutanycerus) achterbergi Shamim, sp. nov. Figure 1. Head dorsal view. Figure 6. Propodeum. Figure 2. Head frontal view. Figure 7. Basal segment. Figure 3. Head ventral view. Figure 8. Hindwing. Figure 4. Head lateral view showing pronotal side. Figure 9. Antenna. Figure 5. Forewing. Figure 10. Hind leg.