Zombus flavicorpus Long & van Achterberg, 2018

Long, Khuat Dang, Achterberg, Cornelis Van & Hoa, Dang Thi, 2018, New record of the genus Zombrus Marshall, 1897 (Hymenoptera: Braconidae: Doryctinae), with description of three new species from Vietnam, Zootaxa 4420 (2), pp. 279-291 : 284-286

Zombus flavicorpus Long & van Achterberg , sp. n.

( Figs 10–21)

Material. Holotype, female, ‘ Doryc.789 ’( IEBR), NW. Vietnam: Son La, orchard, MT , 28°18’03.6’’N, 103°55’38.3E, 671m, 15-25.vii.2016, KD Long. Paratypes: 3 females, ‘Doryc.788’ ( IEBR), data as holotype, but 25.v-5.vi.2016; ‘Doryc.792’ ( RMNH), ibid., but 15-25.vi.2016, KDLong; ‘Doryc.799’ ( VNMN), ibid., but 15.vii.2016, KD Long.

Holotype, female. Body length 14.0 mm; fore wing length 10.0 mm; ovipositor sheath 3.5 mm ( Fig. 10).

Head. Antenna with 57 segments; scapus 1.4 × as long as its maximum width (17:12); first flagellar segment 2.3 × as long as its apical width (16:7), 1,14 × as long as second segment (16:14). In dorsal view, head width 1.7 × its median length (75:45) ( Fig. 11 ); height of eye 1.5 × as long as temple (30:20); temple roundly narrowed behind eyes; in lateral view, transverse diameter of eye 0.95 × length of temple (22:23) ( Fig. 13 ); ocelli small, basal side of ocellar triangle 1.25 × as long as lateral sides (5:4); POL as long as OD and 0.3 × OOL (5:16) (POL:OD:OOL = 5:5:16) ( Fig. 11 ); in frontal view, eye 2.0 × as high as broad (32:16); malar space height 0.65 × height of eye (21:32), and 1.3 × as long as basal width of mandible (21:16); face width 1.3 × height of eye and × height of face and clypeus combined (45:34); height of hypoclypeal depression 0.6 × distance from edge of depression to eye (15:26); width of hypoclypeal depression 0.35 × as wide as face (16:45) ( Fig.12 ); distance between tentorial pits 0.9 × as long as long distance from pit to eye (17:19); occipital carina completely absent; palpi long, length of maxillary palps 0.9 × height of head (without mandible) (66:70). Scapus rather short, length of scapus 1.15 × as long as its width (15:13); face rugose-punctate; clypeus setose, rugose-punctate as face; vertex and temple smooth; frons depressed medially, smooth, with median carina ( Fig. 11 ).

Mesosoma. Mesosoma almost flat; length 1.9 × its height (84:44); side of pronotum sparsely crenulate medially; notauli narrow anteriorly, wider posteriorly, with two fused carinae; scutellar sulcus short, deep, with 2 carinae, 0.35 × as long as scutellum (8:23) ( Fig. 14 ); scutellum flat, smooth; mesopleuron smooth; precoxal sulcus narrow, sparsely crenulate ( Fig. 15 ). Propodeum with median carina on basal half, areolate-rugose laterally ( Fig. 17 ). Side of pronotum wide, rugose posteriorly, smooth medially, sparsely crenulate anteriorly; lateral and middle lobes of mesoscutum smooth; scutellum more or less flat, smooth ( Fig. 14 ); mesopleuron largely smooth; propodeum with median carina, areolate-rugose laterally ( Fig. 17 ).

Wings. Fore wing 3.6 × as long as its maximum width (100:28); pterostigma 4.7 × as long as wide (70:15); vein r arising before middle of pterostigma (distance from apex of pterostigma to vein SR1 2.2 × distance from vein to base of pterostigma) (47:21); marginal cell long ( Fig. 19 ); vein 1-R1 1.5 × as long as pterostigma (104:70) (r:2- SR:3-SR:SR1=14:24:39:90); second submarginal cell long, 2.1 × as long as its maximum width (50:24) ( Fig. 19 ); 0.9 × as long as first subdiscal cell (50:55); vein 1-CU1 0.3 × vein 2-CU1 (15:48); vein 1-CU1 as long as vein cu-a ( Fig. 19 ). Hind wing 3.8 × as long as wide (69:18) ( Fig. 20 ); vein M+CU 1.6 × vein 1-M (71:45); vein 1-M 1.2 × as long as vein 1r-m (45:37) ( Fig. 20 ).

Legs. Fore tarsus 1.7 × as long as fore tibia (83:50); inner side of fore tibia with row of 5 thick spines ( Fig. 21 ); hind coxa with long curved process ( Fig. 16 ); hind femur, tibia and basitarsus 2.45, 8.5 and 4.0 × as long as their width, respectively (71:29, 85:10 and 28:7); dorsal side of hind femur with oblique erect setae, setae 0.5 × as long as maximum width of femur (15:28); dorsal side of hind tibia with oblique erect setae, setae as long as maximum width of tibia; inner hind spur 0.5 × hind basitarsus (14:28), outer hind spur 0.4 × as long as hind basitarsus (12:28); hind tarsus 0.96 × as long as hind tibia (82:85); hind basitarsus 0.5 × second-fifth segments combined (28:54); second hind tarsus 0.6 × as long as basitarsus (17:28), 0.6 × as long as fifth segment (without pretarsus) (8:13). Hind coxa with long curved process and secondary tooth ( Fig. 16 ) dorsally; dorsal side of hind tibia with long setae, setae 1.55 × as long as maximum width of hind tibia (28:18).

Metasoma. Metasoma 1.6 × as long as head and mesosoma combined (87:53); first tergite with median carina, its length equal to apical width of tergite; length of first tergite 1.1 × length of propodeum (50:45) and 0.96 × its apical width ( Fig. 18 ); first metasomal tergite smooth basally, with median carina on apical half, largely striate; second suture distinct; basal area of second tergite with median carina, finely striate, smooth apically; third-sixth metasomal tergites smooth smooth ( Fig. 18 ); setose part of ovipositor sheath 0.35 × as long as fore wing (42:120).

Colour. Antenna blackish brown; head yellow; stemmaticum black; teeth black; palpi yellow; mesosoma, metasoma, all legs yellow but claws brownish yellow. Fore and hind wings yellow on basal half, dark brown on apical half; pterostigma black; veins dark brown.

Variation. Females: body length 10.0-11.0 mm; fore wing 7.8-8.2 mm; antenna with 50-53 segments; inner side of fore tibia with 3-4 thick spines; scutellar sulcus with 3-4 carinae.

Male. Unknown.

Etymology. “flavus” (Latin for “yellow”); “corpus” (Latin for “body”), because of the entirely yellow body.

Remarks. Zombrus flavicorpus sp. n. can be separated from Z. striolatus by the following characters: a) In lateral view, eye 1.43 × as long as wide (1.25 × in Z. striolatus ); b) OOL 3.2 × as long as POL (1.25 × in Z. striolatus ); and c) basal half of fore and basal two third of hind wings yellow (basal third of fore wing, basal half of hind wing yellow in Z. striolatus ).

Figures

FIGURES 11–21. Zombrus flavicorpus sp. n., holotype, female, 11. Head (dorsal view), 12. Head (anterior view), 13. Head (lateral view), 14. Mesonotum, 15. Mesopleuron, 16. Hind coxa, 17. Propodeum, 18. Metasomal tergites 1+2+3, 19. Fore wing, 20. Hind wing, 21. Fore tibia (inner side).