Wroughtonia similis, Long & Van Achterberg & Carpenter & Oanh, 2020

Long, Khuat Dang, Van Achterberg, Cornelis, Carpenter, James M. & Oanh, Nguyen Thi, 2020, Review of the genus Wroughtonia Cameron, 1899 (Hymenoptera, Braconidae, Helconinae), with the description of 12 new species from Vietnam, American Museum Novitates 2020 (3953), pp. 1-56 : 28-32

Wroughtonia similis , sp. nov.

Figures 82–91

TYPE MATERIAL: Holotype, ♀, “Hel.009” ( IEBR), C Vietnam: Thua Thien-Hue, A Luoi, A Roang, 600–900 m, 29.v.2006, H.V. Tru.

DISTRIBUTION: C Vietnam: Thua Thien-Hue.

BIOLOGY: Unknown.

DIAGNOSIS: Antenna with 41 segments; antennal segments 12–23 cream white; maxillary palp 1.7 × as long as head; in frontal view width of face 1.8 × length of face and clypeus combined; frontal protuberance with distinct ledge halfway and blunt dorsally; in dorsal view width of head 1.4 × its median length; height of eye 1.5 × as long as temple; in lateral view height of eye 1.4 × as long as its transverse width; transverse width of eye 1.4 × temple. Mesosoma 2.4 × as long as high; notauli crenulated anteriorly, fused with coarsely rugose area posteriorly; scutellar sulcus 0.5 × as long as scutellum; propodeum with basal median carinae and narrow areola; propodeum almost areolate-rugulose. Length of forewing 3.5 × its maximum width; vein 3-SR 2.0 × vein r; vein 2-M 2.0 × as long as vein 3-SR; hind wing vein 1-M 0.5 × vein 1r-m; vein 2-SC+R long, 0.3 × as long as vein 1r-m; hind wing with 5 hamuli. Foretarsus 1.5 × longer than foretibia; hind femur with ventral serrations and stout protuberance; length of hind femur (without protuberance or serrations) 4.4 × its maximum width; hind coxa sparsely punctate; hind femur largely rugose-punctate. First metasomal tergite 1.8 × as long as its apical width; dorsal carinae in basal 0.6 of tergite; first tergite smooth basally and apically, punctate laterally, punctate-reticulate medially between dorsal carinae; median length of second tergite 0.7 × its basal width, and as long as third tergite; second suture distinct; second tergite smooth with sparse punctures laterobasally; third tergite smooth.

NOTES: W. similis , sp. nov., runs to W. eurygenys Yan and Chen, 2017 , from China in couplet 3b of the key by Yan et al. (2017), but differs as follows: (1) first metasomal tergite 1.8 × as long as apical width (1.4 × in W. eurygenys ); (2) scapus densely setose ventrally (scapus with few medium-sized setae in W. eurygenys ); (3) vein r of forewing 0.5 × vein 3-SR (0.8 × in W. eurygenys ); (4) vein 1-M of hind wing 0.5 × vein 1r-m (0.7 × in W. eurygenys ) and (5) antennal segments 12–23 cream white (13–18 in W. eurygenys ).

DESCRIPTION: Holotype, ♀, body length 11.0 mm, forewing length 9.5 mm, ovipositor sheath 13.0 mm (fig. 82).

Head: Antenna with 41 segments; third antennal segment as long as fourth segment (18:18); maxillary palp 1.7 × as long as head (54:32); in frontal view height of eye 1.9 × its transverse width (40:21); width of face 1.8 × length of face and clypeus combined (48:26) (fig. 84); malar space 0.8 × as long as mandible width (14:17) and 0.3 × height of eye (14:41); frontal protuberance with distinct ledge halfway and blunt dorsally, higher than lateral frontal carina; in dorsal view width of head 1.4 × its median length (83:61); height of eye 1.5 × as long as temple (32:21); ocelli in rather low triangle, POL:OD:OOL = 9:7:19 (fig. 83); distance between front and hind ocelli 0.3 × as long as OOL (6:19) (fig. 83); in lateral view height of eye 1.4 × its transverse width (38:27); transverse width of eye 1.35 × as long as temple (27:20) (fig. 85); face coarsely rugose; frons, vertex, and temple smooth.

Mesosoma: Mesosoma 2.4 × longer than high (97:40); pronotal side crenulate anteriorly, punctate dorsally, coarsely rugose ventrally and posteriorly; mesopleuron largely smooth medially; sparsely punctate dorsally and ventrally (fig. 87); metapleuron coarsely rugose; lobes of mesoscutum smooth; notauli crenulated anteriorly, fused posteriorly with coarsely rugose area (fig. 86); scutellar sulcus rugose, with 4 carinae, 0.5 × as long as scutellum (12:23); scutellum sparsely punctate; propodeum with basal median carinae and without areola (fig. 89); propodeum largely areolate-rugulose.

Wings: Forewing: length of forewing 3.5 × its maximum width (139:40); pterostigma 3.6 × as long as wide (61:17); vein 3-SR 2.0 × as long as vein r; r:2-SR:3-SR:SR1:r-m = 9:20:18:87; 1-CU1:cu-a:2-CU1 = 4:13:24; vein 2-M 2.0 × as long as vein 3-SR (53:27) (fig. 91); hind wing: vein 1-M 0.5 × vein 1r-m (15:29); vein 2-SC+R long, 0.3 × vein 1r-m (8:29); hind wing with 5 hamuli.

Legs: Foretarsus 1.5 × longer than foretibia (53:36); hind femur with ventral serrations and stout protuberance (fig. 88); length of hind femur (without protuberance or serrations), tibia, and basitarsus 4.4 (88:20), 11.5 (126:11), and 8.6 × (43:5) as long as their maximum width, respectively; hind coxa sparsely punctate; hind femur largely rugosepunctate (fig. 88); hind basitarsus 0.3 × hind tibia (43:126), and 0.7 × as long as hind tarsal segments 2–5 (43:58); fourth hind tarsal segment 0.4 × telotarsus (6:14).

Metasoma: Metasoma 0.8 × as long as head and mesosoma combined (55:67); first tergite 1.8 × as long as its apical width (64:35) (fig. 90); dorsal carinae in basal 0.6 of tergite (36:61); first tergite smooth basally and apically, punctate laterally, punctate-reticulate medially between dorsal carinae (fig. 90); median length of second tergite 0.7 × its basal width (26:39) and as long as third tergite (26:26); second suture distinct; second tergite smooth with sparse punctation laterobasally; third tergite smooth; ovipositor sheath 1.4 × as long as forewing (130:95).

Color: Body dark brown, scapus brown; antenna brown, with antennal segments 12–23 cream white; palpi yellow; fore- and middle leg yellow, except tarsus pale yellow; hind leg yellow, but hind femur and tibia apically infuscate; hind tarsus whitish yellow; pterostigma and wing veins brown; wing membrane hyaline; first metasomal tergite yellow; tergites 2–6 brown; ovipositor sheath brown.

Male: Unknown.

ETYMOLOGY: From similis (Latin for “like, resembling”), because this new species similar to Wroughtonia eurygenys Yan and Chen, 2017 , from China.

Figures

FIGURE 82. Wroughtonia similis, sp. nov., habitus (holotype, female, lateral).

FIGURES 83–91. Wroughtonia similis holotype, female. 83. Head, dorsal. 84. Head, frontal. 85. Head, lateral. 86. Mesoscutum. 87. Mesopleuron. 88. Hind femur, lateral. 89. Propodeum. 90. Metasomal tergites 1+2+3. 91. Forewing.