Pseudognaptodon longi 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 : 481-483

Pseudognaptodon longi van Achterberg , sp. n.

Figs 24–35

Type material. Holotype, ♂ ( RMNH), “N. Vietnam: Hoa Binh, Pa Co Hang Kia N. R., 1041 m, N20°44’29” E104°55’44”, 11–23.x.2009, Mal[aise] tr[ap] 23, C. v. Achterberg & R. de Vries, RMNH’09”.

Diagnosis. Antenna of ♂ with approx. 19 antennomeres ( Fig. 24 ); basal area of second tergite smooth, trans- verse and 0.15 × as long as combined second and third tergites ( Fig. 29 ); vein SR1 of fore wing evenly curved ( Fig. 25 ); eye in dorsal view approx. 3.5 × as long as temple, temple roundly narrowed posteriorly ( Fig. 32 ); vein 1-R1 0.9 × as long as pterostigma; vein 1-SR of fore wing longer than wide; first and second metasomal tergites black dorsally and largely smooth (except behind basal area); second metasomal suture distinct medially and crenulate; first tergite widened posteriorly, approx. 0.8 × longer than its apical width ( Fig. 28 ); scutellar sulcus largely smooth ( Fig. 28 ); vertex smooth except for some punctures ( Fig. 32 ).

Description. Holotype, ♂, length of fore wing 1.3 mm, and of body 1.5 mm.

Head. Antenna with 19 antennomeres, scapus longer dorsally than ventrally( Fig.34 ), length of third antennomere 1.1 × fourth antennomere, third, fourth and penultimate antennomere 2.1, 2.0 and 2.0 × as long as wide, respectively ( Figs 34, 35 ); maxillary and labial palpi with 6 and 3 segments, respectively; length of maxillary palp 0.8 × height of head; temple smooth except for some rugulosity ventrally ( Fig. 33 ); hypostomal flange indistinct ( Fig. 33 ); eye 2.6 × as long as temple in dorsal view; temples roundly narrowed behind eyes ( Fig. 32 ); OOL:diameter of posterior ocellus:POL = 8:5:4; vertex largely smooth (except for some punctures), remotely setose and shiny; frons transversely rugulose, glabrous and shiny, without median groove ( Fig. 32 ); face transversely rugulose, shiny and evenly convex ( Fig. 31 ); clypeus nearly truncate medially, flattened, ventral rim thin, and smooth, dorsally moderately convex and with some punctures; hypoclypeal depression 0.4 × as wide as face and deep; malar suture shallow; length of malar space 1.4 × basal width of mandible; mandible flattened medially and smooth, strongly narrowed and twisted apically.

Mesosoma. Length of mesosoma 1.4 × its height; pronotum nearly vertical anteriorly and antescutal depression absent; side of pronotum smooth, including oblique groove ( Fig. 27 ); mesopleuron convex, shiny and smooth; precoxal sulcus absent; episternal scrobe absent ( Fig. 24 ); mesosternal suture shallow and smooth; notauli complete, smooth and moderately impressed, remaining separated posteriorly and in between with a long and smooth groove ( Fig. 28 ); mesoscutum strongly shiny, smooth, only middle lobe and near notauli setose; scutellar sulcus largely smooth ( Fig. 28 ); scutellum wide, slightly convex, smooth and shiny; metapleuron largely smooth; propodeum evenly convex, smooth and shiny ( Fig. 28 ).

Wings. Fore wing: pterostigma triangular ( Fig. 25 ); 1-M straight; 1-SR longer than wide; 1-SR+M present anteriorly; 1-R1 0.9 × longer than pterostigma; vein r emitted from middle of pterostigma and slender; r:3-SR+SR1:2- SR = 4:34:15; vein SR1 evenly curved ( Fig. 25 ); 2-M much shorter than 2-SR; m-cu antefurcal; 1-CU1 and cu-a widened, subequal; 1-CU1:2-CU1 = 1:10; CU1b absent; basal and subbasal cells of fore wing similarly setose as other cells. Hind wing: M+CU:1-M:1r-m = 17:32:12; all cells equally densely setose; m-cu not indicated; 2-SC+R widened ( Fig. 26 ).

Legs. Hind coxa smooth; tarsal claws rather robust and simple; length of femur, tibia and basitarsus of hind leg 3.2, 7.0 and 5.4 × as long as their maximum width; hind tibial spurs 0.35 and 0.40 × as long as basitarsus.

Metasoma. First tergite 0.8 × longer than its apical width, gradually widened apically, convex, only posteriorly longitudinally rugose, shiny, dorsope absent, its dorsal carinae coarsely developed basally and protruding, weakly converging, posteriorly absent ( Fig. 28 ); first tergite laterally with rather small laterope in distinctly crenulate glymma; second and third tergites mainly smooth, but rugose behind basal area ( Fig. 29 ); basal area of second tergite transverse, medium-sized, smooth and 0.15 × as long as combined second and third tergites; third tergite with slightly indicated oblique antero-lateral grooves; second metasomal suture distinct medially and crenulate; epipleura of 2 nd– 3 rd tergites semi-transparent ( Fig. 24 ); remainder of metasoma smooth.

Colour. Black; palpi white; scapus and legs (but apex of hind tibia and hind tarsus infuscated or dark brown) pale yellowish or brownish yellow; tegulae brown and anteriorly darkened; remainder of antenna blackish; face and clypeus dark brown ( Fig. 31 ); metasoma pale brownish and whitish ventrally ( Fig. 24 ); pterostigma dark brown; most veins of fore wing (except basally) brown; wing membrane subhyaline.

Etymology. Named after Dr Khuat Dang Long (IEBR, Hanoi) for his friendship and help as counterpart during the expeditions in Vietnam.

Distribution. Vietnam. Collected in open montane forest on lime stone at 1041 m.

Figures

FIGURE 24. Pseudognaptodon longi sp. n., ♂, holotype, habitus, lateral aspect.

FIGURES 25–35. Pseudognaptodon longi sp. n., ♂, holotype. 25 fore wing 26 hind wing 27 mesosoma, lateral aspect 28 mesosoma, dorsal aspect 29 propodeum and metasoma, dorsal aspect 30 hind leg, lateral aspect 31 head, anterior aspect 32 head, dorsal aspect 33 head, lateral aspect 34 base of antenna 35 apex of antenna.