Neognamptodon laticauda Tan & van Achterberg, 2020

Tian, Xiao-Xia, Achterberg, Cornelis Van, Wu, Jia-Xuan & Tan, Jiang-Li, 2020, New Gnamptodontinae (Hymenoptera: Braconidae) from China and Vietnam, with two genera new for China and seven new species, Zootaxa 4778 (3), pp. 471-508 : 487-491

Neognamptodon laticauda Tan & van Achterberg , sp. n.

( Figs 48–64 )

Type material. Holotype, ♀ ( NWUX), “SW. China: Yunnan, Yaoqu, Menglun , c. 540 m, 5.x.2010, 21°93’N 101°26’E, Jiangli Tan, NWUX ” . Paratype: 1 ♂ ( NWUX), “SW. China: Yunnan, Yaoqu, Mengla , c. 1200 m, 28.ix.2010, 21°74’N 101°46’E, Jiangli Tan, NWUX ” .

Diagnosis. Antenna of ♀ with approx. 23 antennomeres; mesoscutum with long groove-like medio-posterior depression and anterior half of notauli smooth ( Fig. 51 ); mesosoma dark brown; vein 3-SR of fore wing 2.2–3.0 × as long as vein r ( Figs 49 , 62 ); dorsal carinae of first tergite united basally ( Figs 52 , 63 ); basal area of second metasomal tergite transverse and medially 0.13–0.15 × as long as wide anteriorly; area behind basal area of second tergite of ♀ coarsely crenulate ( Fig. 52 ); setose part of ovipositor sheath approx. 0.35 × as long as fore wing.

Description. Holotype, ♀, length of fore wing 2.0 mm, and of body 2.1 mm.

Head. Antenna with 23 antennomeres, scapus longer dorsally than ventrally, length of third antennomere 1.3 × fourth antennomere, third, fourth and penultimate antennomeres 3.8, 3.0 and 2.6 × as long as wide, respectively ( Figs 54, 55 ); maxillary and labial palpi with 6 and 3 segments, respectively; length of maxillary palp equal to height of head; temple smooth; hypostomal flange narrow ( Fig. 58 ); eye 3.6 × as long as temple in dorsal view; temples directly narrowed behind eyes; OOL:diameter of posterior ocellus:POL = 42:19:19; vertex and frons smooth and shiny, without median groove; face smooth, shiny and convex ( Fig. 56 ); clypeus truncate medially, slightly protruding and ventral rim thin, medially punctulate and shiny; hypoclypeal depression 0.4 × as wide as face, wide and deep; malar suture absent; length of malar space 1.2 × basal width of mandible; mandible flat medially and smooth, strongly narrowed and twisted apically and ventro-basally widened ( Fig. 58 ).

Mesosoma. Length of mesosoma 1.5 × its height; pronotum subhorizontal anteriorly, antescutal depression absent, with narrow crenulated groove and with anterior lamella medially widened ( Fig. 57 ); side of pronotum smooth, but oblique groove finely crenulate ( Fig. 50 ); mesopleuron convex, shiny and smooth; precoxal sulcus present submedially as finely crenulate oblique groove; episternal scrobe large and linear ( Fig. 50 ); pleural sulcus crenulate; mesosternal suture deep and finely crenulate; notauli nearly complete, smooth and distinctly impressed, and posteriorly with medium-sized longitudinal groove in between ( Fig. 51 ); with some setae along notauli and on middle lobe of mesoscutum, mesoscutal lobes distinctly convex, strongly shiny and smooth; scutellar sulcus distinctly crenulate ( Fig. 51 ); scutellum wide triangular, slightly convex, smooth, setose and shiny; metapleuron largely smooth and setose; propodeum evenly convex, largely rugulose, medio-longitudinal carina long and posteriorly connected to a small areola ( Fig. 51 ).

Wings. Fore wing: pterostigma elongate triangular ( Fig. 49 ); 1-M straight; 1-SR longer than wide; 1-SR+M present anteriorly; 1-R1 1.7 × longer than pterostigma; vein r emitted near middle of pterostigma and slender; r:3-SR:SR1:2-SR = 9:20:98:23; vein SR1 straight; m-cu distinctly antefurcal; 1-CU1 widened, shorter than cu-a; 1-CU1:2-CU1 = 1:17; CU1b complete, medium-sized; basal and subbasal cells of fore wing similarly setose as other cells. Hind wing: M+CU:1-M:1r-m = 9:43:14; basal and subbasal cells similarly setose as other cells; m-cu absent.

Legs. Hind coxa smooth; tarsal claws rather robust and simple ( Fig. 59 ); length of femur, tibia and basitarsus of hind leg 4.6, 11.3 and 9.0 × as long as their maximum width; hind tibial spurs 0.20 and 0.25 × as long as basitarsus.

Metasoma. First tergite 0.8 × longer than its apical width, gradually widened apically, convex, reticulate-rugulose, shiny, dorsope absent, its dorsal carinae united basally ( Fig. 52 ); first tergite laterally with deep and round laterope in smooth glymma; second and third tergites mainly reticulate-rugulose (including basal area, but behind area crenulate, third tergite becoming granulate posteriorly) and third tergite with antero-lateral grooves ( Fig. 52 ); basal area of second tergite transverse, narrow, reticulate-rugulose and medially approx. 0.15 × as long as wide anteriorly and 0.07 × as long as combined second and third tergites; second metasomal suture distinct medially and finely crenulate; epipleura of second–third tergites semi-transparent; fourth and fifth tergites largely finely granulate; ovipositor sheath widened apically ( Fig. 53 ) and its apex rounded, setose part 0.33 × as long as fore wing, 2.4 × first tergite and 2.1 × hind basitarsus; ovipositor compressed and both valves subapically widened, resulting in a distinct subapical nodus ( Fig. 53 ).

Colour. Dark brown; palpi whitish; scapus, tegulae, legs (but telotarsi infuscated) and metasoma ventrally pale yellowish; head (but stemmaticum dark brown), propleuron, pronotum anteriorly, mesopleuron antero-dorsally and apical third of metasoma yellowish brown; pterostigma and most veins of fore wing (except basally) brown ( Fig. 49 ); wing membrane subhyaline.

Male. Length of fore wing 1.7 mm, and of body 1.6 mm; vein 1-R1 1.3 × as long as pterostigma; vein 3-SR of fore wing 3.0 × as long as vein r ( Fig. 62 ); length of first tergite 0.8 × longer than its apical width; very similar but less sculptured than female (especially propodeum and metasoma behind second tergite: Fig. 63 ).

Etymology. Named after the broadened ovipositor; “latus” is Latin for “broad” and “cauda” is Latin for “tail, appendage”.

Distribution. Oriental: China (Yunnan). Collected in submontane and montane forest at 540–1200 m.

Figures

FIGURE 48. Neognamptodon laticauda sp. n., ♀, holotype, habitus, lateral aspect.

FIGURES 49–59. Neognamptodon laticauda sp. n., ♀, holotype. 49 wings 50 mesosoma, lateral aspect 51 mesosoma, dorsal aspect 52 propodeum, first–third metasomal tergites, dorsal aspect 53 ovipositor and sheath., lateral aspect 54 apex of antenna 55 base of antenna 56 head, anterior aspect 57 head, dorsal aspect 58 head, lateral aspect 59 hind leg.

FIGURES 60–64. Neognamptodon laticauda sp. n., ♂, paratype. 60 habitus, lateral aspect 61 mesosoma, dorsal aspect 62 wings 63 propodeum, first–third metasomal tergites, dorsal aspect 64 head, dorsal aspect.