Diachasmimorpha ammanotus, Wu & Chen & He, 2005

Wu, Qiong, Chen, Xue-Xin & He, Jun-Hua, 2005, The genus Diachasmimorpha Viereck (Hymenoptera: Braconidae: Opiinae) from China, Zootaxa 1022 (1), pp. 37-56 : 52-54

Diachasmimorpha ammanotus sp. nov. (Figs. 30–35)

Holotype, ♀, length of body 4.7 mm, of forewing 5.6 mm.

Head. Antenna 1.4 times length of forewing, with 48 segments, length of third segment 1.1 times fourth segment, length of third, fourth and penultimate segments 1.8, 2.0 and 3.0 times their maximum widths, respectively; scape compressed, outer side glabrous, remainder setiferous; length of maxillary palp 0.9 times height of head, segments slender; OOL: diameter of posterior ocellus: POL = 3.9: 1.3: 1.0; frons slightly concave and glabrous medially, setiferous laterally; length of eye in dorsal view 1.7 times temple; vertex and temple sparsely setiferous; temples subparallel­sided behind eyes in lateral view; occipital carina present up to middle level of eye in lateral view; face densely punctate and setose; anterior tentorial pits distinct and medium­sized; clypeus mostly smooth, sparsely setiferous, convex ventrally, in lateral view distinctly separated from mandibles; in anterior view hypoclypeal depression nearly absent; length of malar space 1.7 times basal width of mandible; mandible robust, not twisted apically, with a ventral carina near to and slightly ventrad of occipital carina.

Mesosoma. Length of mesosoma 1.2 times its height; pronope small and shallow; propleuron flattened, setiferous; side of pronotum smooth; precoxal sulcus deep, wide and rugose, not reaching base of mesocoxa; remainder of mesopleuron smooth, densely setose postero­ventrally, epicnemial area crenulate, extending to precoxal sulcus ventrally; only ventral 1/3 of pleural sulcus weakly crenulate; metapleuron sparsely punctate and setiferous medially, with irregularly depressed margins; mesosternal sulcus moderately deep, narrow without crenulae; notauli complete, deep, wide and smooth, meeting and forming a triangular depression posteriorly, mesoscutal midpit moderately deep, small and narrow teardrop­shaped; middle lobe of mesoscutum sparsely punctate and setiferous, strongly protruding anteriorly, with a pair of weak depressions parallel to notauli; lateral lobes of mesoscutum finely setiferous; scutellar sulcus wide, deep and with three carinae; scutellum slightly convex, smooth and sparsely setiferous; propodeum weakly and irregularly rugose anteriorly, strongly rugo­reticulate medially, areolate posteriorly, relatively smooth in each areola; propodeum with a long and strong median carina,

Wings. Forewing: 1­M straight anteriorly, curved posteriorly; r: 3­SR: SR1 = 1.0: 2.1: 10.4; 1­SR+M distinctly sinuate; SR1 nearly straight and ending close to apex of wing; cu­a oblique and straight; 1­CU1: 2­CU1 = 1.0: 4.9; 2­SR: 3­SR: r­m = 1.7: 1.0: 1.0; first subdiscal cell robust and slightly widened apically; CU1b not longer than 3­CU1; mcu postfurcal, and slightly converging to 1­M posteriorly. Hindwing: SR absent; m­cu long and straight; length of 1­M as long as 1r­m; M+CU: 1­M = 1.0: 1.0.

Legs. Hind coxa setiferous; tarsal claws robust basally, setiferous, lobe absent; length of femur, tibia and basitarsus of hind leg 4.0, 9.2 and 5.8 times as long as their width, respectively.

Metasoma. Length of first tergite equal to its apical width, striate medio­posteriorly, relatively smooth laterally and concave basally, with a median carina; dorsal carinae strong basally, bifurcated subapically; spiracle of first tergite small and laterally situated; laterope large and deep; dorsope absent, but strong dorsal carina gives the impression of presence; second tergite longitudinally costate medially; ovipositor straight, sinuate apically, with two dorsal protuberances and indistinct ventral teeth, length of ovipositor sheath 0.8 times forewing and 4.2 times first metasomal tergite; sheath ribbon shaped, with long setae and an apical spine; hypopygium large but not surpassing apex of metasoma, acute apically.

Colour. Yellowish orange; antenna, apex of mandible, middle femur (except pale ventrally), hind leg (except yellowish orange apex of trochanters and base of femur and tibia) and metanotum brown; propodeum partly, first tergite (except yellowish orange base), second and third tergites with “ V ”­shaped patch medially and ovipositor sheath dark brown; wing membranes subhyaline, with dark patch near vein CU1b, pterostigma and veins dark brown.

Material. Holotype, ♀, China: Guiding , Guizhou province, 10.VIII.1979, Xianjin Zeng, No. 814487 ( ZJUH).

Note. This species is morphologically similar to D. longicaudata ( Ashmead, 1905) but can be separated from the latter in having the notauli complete, deep, wide and smooth, meeting and forming a triangular depression posteriorly, the mesoscutal midpit moderately deep, small and narrow teardrop­shaped, and the long and strong median carina throughout the propodeum.

Etymology. From “ amm ” (Greek for “nubble”) and “ not ” (Greek for “notum”), the specific epithet refers to the propodeum with a pair of protuberance latero­posteriorly.