Aspicolpus striatus Yan et Chen, 2020

Yan, Cheng-Jin, Wu, Qiong, He, Jun-Hua & Chen, Xue-Xin, 2020, The genus Aspicolpus Wesmael, 1838 (Hymenoptera, Braconidae, Brachistinae) from China, with descriptions of four new species, Zootaxa 4743 (3), pp. 391-401 : 398-400

Aspicolpus striatus Yan et Chen , sp. n.

( Fig. 4 )

Material examined. Holotype: 1♀, China, Fujian Prov., Jiangle, Longqi Mountain , 16.VII.1991, Changming Liu, No. 20007190 ( ZJUH) . Paratypes: 1♀, China, Fujian Prov., Jiangle, Longqi Mountain , 16.VII.1991, Changming Liu, No. 20007183 ; 1♀, China, Fujian Prov., Jiangle, Longqi Mountain , 8.VII.1991, Changming Liu, No. 969684 ; 1♀, China, Fujian Prov., Shaowu , 1980, Jianhong Qiu, No. 803837 ( ZJUH) .

Description. Female. Body length (excluding ovipositor sheath) 6.5 mm, length of extended part of ovipositor 3.7 mm, fore wing length 5.4 mm.

Head. Antennomeres 25; length of third flagellomere 1.2×fourth flagellomere; length of third, fourth and penultimate flagellomeres 4.8, 3.3 and 1.1×their width, respectively. Maxillary palp, palpomeres 6; length of maxillary palp 0.6×height of head. Labial palp 4-segmented. Frons with a crest-shaped elevation and punctate latero-dorsally, rugose-punctate latero-ventrally, medially rugose-reticulate and with a long median protruding lamella. In dorsal view length of eye 1.4×temple ( Fig. 4d ). Malar suture absent ( Fig. 4c ). Length of malar space 1.7×basal width of mandible, 0.7×maximum width of eye ( Fig. 4c ). POL: OD: OOL=13: 8: 33 ( Fig. 4d ). Face 0.5×as high as wide and 1.5×as wide as eye height and 0.6×as wide as head ( Fig. 4b ). Face weakly convex, coarsely reticulate-punctate ( Fig. 4b ). Vertex sparsely punctate ( Fig. 4d ). Temple densely punctate dorsally, coarsely rugose-reticulate ventrally ( Fig. 4c ). Clypeus coarsely and densely punctate, with a broad central thickening and concave medially, its apical margin convex ( Fig. 4b ).

Mesosoma. Length almost 2×as long as its height ( Fig. 4e ). Pronope shallow and wide, triangle-shaped. Side of pronotum medially crenulate, posteriorly and ventrally rugose-punctate, dorsally densely punctate. Mesoscutal lobes punctate, rugose-punctate posteriorly ( Fig. 4f ). Notauli narrow and crenulate, with a medial carina posteriorly ( Fig. 4f ). Scutellum punctate, coarsely rugose-punctate posteriorly and laterally ( Fig. 4f ). Scutellar sulcus with one carina and several lateral crenulae ( Fig. 4f ). Prepectal carina distinct ( Fig. 4e ). Precoxal sulcus wide, coarsely crenulate ( Fig. 4e ). Metanotum with a short median carina ( Fig. 4f ). Propodeum coarsely rugose-reticulate and with a median longitudinal carina ( Fig. 4f ).

Wing. Fore wing about 3×as long as wide ( Fig. 4g ). 1-M posteriorly slightly curved ( Fig. 4g ). Stigma 3.3×as long as wide ( Fig. 4g ). r: 3-SR: SR1=15: 17: 81 ( Fig. 4g ). 2-SR: 3-SR: r-m=25: 18: 20 ( Fig. 4g ). 1-M: m-cu=38: 23 ( Fig. 4g ). SR1 almost straight ( Fig. 4g ). cu-a inclivous, postfurcal ( Fig. 4g ). 1-CU1 short ( Fig. 4g ). r-m vertical. Hind wing, 1-M: 1r-m =14: 16, cu-a inclivous.

Legs. Length of fore tarsus 1.2×fore tibia. Length of femur, tibia and basitarsus of hind leg 3.1, 8.2 and 5.8×their width, respectively. Hind femur robust. Length of outer and inner hind tibia spur 0.24 and 0.27×basitarsus, respectively.

Metasoma. First tergite parallel-sided, coarsely striate, dorsal carinae distinct and complete ( Fig. 4h ); length of first tergite 1.1×its apical width ( Fig. 4h ). Second tergite striated basally, remainder smooth ( Fig. 4h ). Third tergite and following tergites smooth. Ovipositor sheath 1.6×as long as metasoma, 1.4×as long as hind tibia, 1.3×as long as mesosoma and 0.7×as long as fore wing.

Colour. Black. Palpi light yellow. Fore and mid tibiae, tarsi yellow. Fore and mid coxae, trochanters, femora, hind legs and ovipositor sheath yellow brown. Antenna and pterostigma reddish brown. Tegula dark brown. Wing membrane light brown and veins brown.

Variation. Antennomeres 24–26. Body length (excluding ovipositor sheath) 5.2–7.4 mm, fore wing length 4.2–5.8 mm. In one specimen second tergite nearly smooth.

Male. Unknown.

Diagnosis. Aspicolpus striatus sp. n. is similar to A. rugosus Chou et Hsu, 1998 , but differs in having the length of malar space 1.7×basal width of mandible (the latter 1.0×basal width of mandible); temple densely punctate dorsally, coarsely rugose-reticulate ventrally (the latter rugose-reticulate) and vertex sparsely punctate (the latter rather densely punctate).

Distribution. China (Fujian).

Host. Unknown.

Etymology. It is named after its coarsely striated first tergite.

Figures

FIGURE 4. Aspicolpus striatus, sp. n. a. habitus, lateral aspect; b. head, frontal aspect; c. head, lateral aspect; d. head, dorsal aspect; e. mesosoma, lateral aspect; f. mesosoma, dorsal aspect; g. fore wing; h. first and second abdominal tergites, dorsal aspect.