Pseudognaptodon sinensis 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 : 483-486

Pseudognaptodon sinensis Tan & van Achterberg , sp. n.

Figs 36–47

Type material. Holotype, ♀ ( NWUX), “ NW China: Shaanxi, Pingheiliang, Ningshaan , N33.47° E108.50°, 1.vii.– 17.viii.2016, 2188 m, Mal[aise] trap, Tan JL & Tan QQ, NWUX ”.

Diagnosis. Antenna of ♀ with approx. 30 antennomeres ( Fig. 45 ); basal area of second tergite rugose-reticulate and 0.10 × as long as combined second and third tergites ( Fig. 40 ); vein SR1 of fore wing distinctly curved basally ( Fig. 37 ); eye in dorsal view approx. 9 × as long as temple, temple directly narrowed posteriorly ( Fig. 43 ); vein 1- R1 0.8 × as long as pterostigma; vein 1-SR of fore wing about as long as wide ( Fig. 37 ); first and second metasomal tergites black dorsally; second metasomal suture obsolescent medially and crenulate ( Fig. 40 ); third–fifth antennal segments mainly dark brown; first tergite widened posteriorly, approx. 0.9 × longer than its apical width ( Fig. 40 ); scutellar sulcus distinctly crenulate ( Fig. 39 ); vertex aciculate ( Fig. 43 ); setose part of ovipositor sheath approx. 0.6 × as long as hind basitarsus.

Description. Holotype, ♀, length of fore wing 2.9 mm, and of body 2.6 mm.

Head. Antenna with 30 antennomeres, scapus longer dorsally than ventrally ( Figs 36 , 45 ), length of third antennomere 1.5 × fourth antennomere, third, fourth and penultimate antennomeres 3.0, 2.0 and 1.6 × as long as wide, respectively ( Figs 45, 46 ); maxillary and labial palpi with 5 and 3 segments, respectively; length of maxillary palp 0.9 × height of head; temple partly aciculate; hypostomal flange below mandible large and semi-circular ( Fig. 44 ); eye 9.5 × as long as temple in dorsal view; temples directly narrowed behind eyes; OOL:diameter of posterior ocellus:POL = 16:11:9; vertex and frons transversely or obliquely aciculate and shiny, with some long setae near ocelli, without median groove; face sparsely punctulate, shiny and convex ( Fig. 42 ); clypeus truncate medially, slightly protruding laterally, ventral rim thin, and smooth, dorsally moderately convex and with some punctures; hypoclypeal depression 0.6 × as wide as face, wide and deep; malar suture shallow; length of malar space 1.8 × basal width of mandible; mandible convex medially and smooth, strongly narrowed and twisted apically, second tooth minute ( Fig. 42 ).

Mesosoma. Length of mesosoma 1.5 × its height; pronotum vertical anteriorly and antescutal depression absent; side of pronotum smooth, but oblique groove finely crenulate ( Fig. 38 ); mesopleuron convex, shiny and smooth; precoxal sulcus absent; episternal scrobe absent ( Fig. 38 ); mesosternal suture obsolescent and smooth; notauli only on vertical part of mesoscutum finely crenulate and distinctly impressed, on disc shallowly impressed anteriorly and absent on posterior half of mesoscutum, notaulic courses indicated by double row of setae; mesoscutum slightly convex, strongly shiny, and smooth; scutellar sulcus distinctly crenulate ( Fig. 39 ); scutellum wide, slightly convex, smooth and shiny; metapleuron punctulate, but dorsally largely smooth; propodeum evenly convex, largely smooth and shiny ( Fig. 39 ), only posteriorly with pair of short carina and medially with some faint micro-sculpture ( Fig. 40 ).

Wings. Fore wing: pterostigma wide triangular ( Fig. 37 ); 1-M straight; 1-SR about as long as wide; 1-SR+M reduced anteriorly ( Fig. 37 ); 1-R1 0.8 × longer than pterostigma; vein r emitted basally of middle of pterostigma and slender; r:3-SR+SR1:2-SR = 10:70:23; vein SR1 curved basally ( Fig. 37 ); 2-M slightly shorter than 2-SR; m-cu antefurcal; 1-CU1 widened, 1.5 × longer as cu-a; 1-CU1:2-CU1 = 1:5; only basal half of CU1b distinct; basal and subbasal cells of fore wing similarly setose as other cells. Hind wing: M+CU:1-M:1r-m = 18:33:13; basal and subbasal cells less densely setose than other cells; m-cu faintly indicated.

Legs. Hind coxa smooth; tarsal claws rather robust and simple ( Fig. 47 ); length of femur, tibia and basitarsus of hind leg 3.5, 7.2 and 7.4 × as long as their maximum width; hind tibial spurs 0.3 and 0.4 × as long as basitarsus.

Metasoma. First tergite 0.9 × longer than its apical width, gradually widened apically, convex, coarsely reticulate-rugose, shiny, dorsope absent, its dorsal carinae coarsely developed basally, interconnected by transverse rugae, converging, posteriorly weakly developed and merging in sculpture ( Fig. 40 ); first tergite laterally with deep and round laterope above distinctly crenulate glymma ( Fig. 41 ); second tergite mainly reticulate-punctate (including distinctly elevated narrow basal area) and basal half of third tergite punctate and longitudinally rugulose and apical half smooth ( Fig. 40 ); basal area of second tergite transverse, narrow, reticulate-rugose and 0.1 × as long as combined second and third tergites; second metasomal suture obsolescent medially and crenulate; epipleura of 2 nd– 3 rd tergites semi-transparent ( Fig. 41 ); 4 th– 6 th tergites basally very finely granulate and remainder smooth; ovipositor sheath subparallel-sided and apically pointed ( Figs 36 , 41 ), its setose part 0.05 × as long as fore wing, 0.35 × first tergite and 0.55 × hind basitarsus; ovipositor wide and compressed basally and gradually narrowed apically, without subapical notch or nodus ( Fig. 41 ).

Colour. Black; palpi white; clypeus, malar space, temple ventrally, tegulae, legs and scapus pale yellowish; remainder of antenna dark brown; remainder of head largely brownish yellow but medio-dorsally and posteriorly dark brown ( Fig. 43 ); mesoscutum anteriorly and two elongate patches dorsally ( Fig. 39 ), pronotum ventrally, mesopleuron anteriorly and wide band ventrally chestnut brown ( Fig. 38 ); metasomal nota black (but apical one brownish yellow), pleura pale brownish and sternite whitish ( Fig. 41 ); pterostigma (but base pale), most veins of fore wing (except basally) dark brown ( Fig. 37 ); wing membrane subhyaline.

Etymology. Named after its country of origin, China.

Distribution. Palaearctic: China (Shaanxi). Collected in montane forest at 2188 m.

Notes. The new species fits fairly well in the P. curticauda group ( Williams 2004) but has the setose part of the ovipositor sheath longer (0.55 × hind basitarsus instead of less than 0.5 ×) and the metasoma is much more sculptured than of other members.

Figures

FIGURE 36. Pseudognaptodon sinensis sp. n., ♀, holotype, habitus, lateral aspect.

FIGURES 37–47. Pseudognaptodon sinensis sp. n., ♀, holotype. 37 wings 38 mesosoma, lateral aspect 39 mesosoma, dorsal aspect 40 propodeum, first–third metasomal tergites, dorsal aspect 41 id., lateral aspect 42 head, anterior aspect 43 head, dorsal aspect 44 head, lateral aspect 45 antennae 46 apex of antenna 47 hind leg.