Wroughtonia hatinhensis, 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 : 19-21

Wroughtonia hatinhensis , sp. nov.

Figures 48–58

TYPE MATERIAL: Holotype, ♀, “Hel.040” ( IEBR), NC Vietnam: Ha Tinh, Huong Son, 18°22′N 106°13′E, 450 m, April 7–13, 1998, Malaise [trap], AMNH, K. Long. Paratypes: 4♀: “Hel.041” ( AMNH), same place, but 900 m, May 5, 1998, Malaise [trap], AMNH, K. Long; “Hel.038” ( AMNH), Ha Tinh, Huong Son, 18°22′N 106°13′E, 600 m, April 15–20, 1998, Malaise [trap], AMNH, K. Long; “Hel.066” ( IEBR), same place, but 900 m, April 15–20, 1998, Malaise [trap], AMNH, K. Long; “Hel.027” ( IEBR), NC Vietnam: Ha Tinh, Huong Son, 18°22′N 106°13′E, 900 m, April 20–28, 1998, Malaise [trap], AMNH, K. Long; 2♂: “Hel.070” ( AMNH), same place, but May 18, 1998, Malaise [trap], AMNH, K. Long; “Hel.079” ( IEBR), same place, but May 20, 1998, Malaise [trap], AMNH, K. Long; 2♀, “Hel.025” ( VNMN), NE Vietnam: Tuyen Quang, Na Hang, Trung Phin , sweeping, 18.ix.2017, HTHCT; “Hel.001” ( RMNH), NW Vietnam: Hoa Binh, Cuc Phuong NP, M[alaise] T[rap], 20°23′06″N 105°34′11″E, 315 m, 20–30.vi.2002, K.D. Long .

DISTRIBUTION: NC Vietnam: Ha Tinh (Huong Son); NE Vietnam: Tuyen Quang (Na Hang NP); NW Vietnam: Hoa Binh (Cuc Phuong NP).

BIOLOGY: Unknown.

DIAGNOSIS: Females have antenna with 34–37 segments and antennal segments 10–22 cream white; males have antenna with 38–39 segments and antennal segments 10–27 cream white; maxillary palp 1.9 × as long as head; malar space 0.9 × as long as mandible width and 0.35 × height of eye; frontal protuberance bifurcate, broader apically, as high as lateral frontal carina; in dorsal view width of head 1.3 × its median length; height of eye 2.0 × as long as temple; in lateral view width of eye 1.6 × as long as temple. Mesosoma 2.1 × longer than high; notauli crenulate anteriorly, fused posteriorly with median carina in wide and coarsely rugose area; scutellum sparsely punctate; propodeum with distinct areola and coarsely rugose. Length of forewing 3.2 × its maximum width; pterostigma 3.7 × as long as wide; vein 3-SR shorter vein r; vein 2-M 3.1 × 3-SR; hind wing: vein 1-M 0.5 × vein 1r-m; vein 2-SC+R short, nearly quadrate, hind wing with 4 hamuli. Foretarsus 1.4 × as long as foretibia; hind femur with ventral serrations and acute tooth-shaped protuberance; length of hind femur (without tooth or serrations) 3.7 × its maximum width; hind coxa densely punctate laterally; hind femur largely rugose-punctate. First metasomal tergite as long as its apical width; dorsal carinae in basal 0.7 of tergite; first tergite smooth medially, sparsely rugose basally and laterally, transversely rugose apically; median length of second tergite 0.35 × its basal width; median length of second tergite 0.8 × third tergite; second tergite largely smooth, but with faint divergent striae baso-laterally; third tergite largely smooth.

NOTES: W. hatinhensis , sp. nov., runs to couplet 16a of the key by Yan et al. (2017), but differs from all species after couplet 16 by the following characters: (1) in dorsal view length of eye 2× as long as temple; (2) second metasomal tergite with divergent striae baso-laterally (fig. 55); (3) hind coxa pale yellow and hind femur brown (except pale yellow base of latter) and (4) antennal segments 10–22 cream white.

DESCRIPTION: Holotype, ♀, body length 8.7 mm, forewing length 8.1 mm, ovipositor sheath 5.3 mm (fig. 48).

Head: Antenna with 36 segments; third antennal segment 1.05 × fourth segment (20:19); frontal protuberance bifurcate, broader apically, as high as lateral frontal carina; in frontal view height of eye 2.1 × its transverse width (42:20); width of face 1.8 × length of face and clypeus combined (49:27); malar space 0.9 × as long as mandible width (15:17) and 0.35 × height of eye (15:42) (fig. 50); maxillary palp 1.9 × as long as head (68:35); in dorsal view width of head 1.3 × as long as its median length (85:64); height of eye 2.0 × as long as temple (36:18); ocelli in high triangle, POL:OD:OOL = 7:6:18; distance between front and hind ocelli 0.2 × as long as OOL (4:18) (fig. 49); in lateral view length of eye 1.5 × its transverse width (50:33); width of eye 1.2 × temple (33:27) (fig. 51); face coarsely rugose, narrow area between antennal sockets and eye margin crenulate; clypeus rugose; malar space coarsely rugose; frons smooth; vertex and temple almost smooth, with scattered fine punctures.

Mesosoma: Mesosoma 2.1 × longer than high (87:41); pronotal side coarsely carinate medially, rugose-punctate dorsally and largely rugose ventrally (fig. 53); mesopleuron narrowly depressed and smooth medially, sparsely punctate dorsally, punctate-reticulate ventrally; metapleuron foveate-reticulate; median lobes of mesoscutum sparsely punctate, but posteriorly near notauli largely rugose; lateral lobes of mesoscutum almost smooth; notauli crenulate anteriorly, fused posteriorly with median carina in wide coarsely rugose area (fig. 52); scutellar sulcus with 3 carinae, 0.5 × scutellum (12:23); scutellum sparsely punctate; propodeum with distinct areola and coarsely rugose (fig. 56).

Wings. Forewing: length of forewing 3.2 × its maximum width (81:25); pterostigma 3.7 × as long as wide (56:15); vein r arising behind middle of pterostigma (fig. 57); vein 3-SR shorter vein r; r:2-SR:3-SR:SR1:r-m = 16:27:13:87:15; 1-CU1:cu-a:2-CU1 = 5:17:27;, vein 2-M 3.1 × 3-SR (40:13). Hind wing: vein 1-M 0.5 × vein 1r-m (12:24) (fig. 58); vein 2-SC+R short, nearly quadrate; hind wing with 4 hamuli.

Legs: Foretarsus 1.4 × longer than foretibia (51:36); hind femur with ventral serrations and acute tooth-shaped protuberance (fig. 54); length of hind femur (without tooth or serrations), tibia, and basitarsus 3.7 (88:24), 9.8 (137:14) and 7.3 × (44:6) as long as their maximum width, respectively; hind coxa densely punctate laterally; hind femur largely rugose-punctate (fig. 54); hind basitarsus 0.3 × hind tibia (44:137), and 0.8 × as long as second–fifth hind tarsal segments (44:58); fourth hind tarsal segment 0.6 × as long as telotarsus (8:14).

Metasoma: Metasoma 0.7 × as long as head and mesosoma combined (44:61); first tergite as long as its apical width (37:37) (fig. 55); dorsal carinae in basal 0.7 of tergite (22:33); first tergite smooth medially, sparsely rugose basally and laterally, transversely rugose apically; median length of second tergite 0.35 × its basal width (14:40); and 0.8 × third (14:17) (fig. 55); second tergite largely smooth, with faint divergent striae baso-laterally; second suture distinct; third tergite and remainder of metasoma largely smooth; ovipositor sheath 0.65 × as long as forewing (53:81).

Color: Body dark brown, scapus light brown; antenna brown, light brown basally with 11th–22nd antennal segments cream white; palpi pale yellow; foreleg pale yellow, but tibia yellow; hind coxa, trochanter and trochantellus yellow; hind femur largely brown, but yellow basally; hind tibia yellow basally, brown apically; hind tarsus whitish yellow; pterostigma and wing veins brown; wing membrane hyaline; first and second metasomal tergites brown; tergites 3–6 light brown; ovipositor sheath brown.

ETYMOLOGY: The new species named after the type locality (Ha Tinh province) in north-central Vietnam .

VARIATION: Paratype ♀, “Hel.027,” body length 9.5 mm, forewing length 7.3 mm, ovipositor sheath 4.7 mm. Female antenna with 34–37 segments, 10th–22nd antennal segments cream white; male antenna with 38–39 segments; 10th–27th antennal segments cream white.

Figures

FIGURE 48. Wroughtonia hatinhensis, sp. nov., habitus (holotype, female, lateral).

FIGURES 49–58. Wroughtonia hatinhensis (holotype, female). 49. Head, dorsal. 50. Head, frontal. 51. Head, lateral. 52. Mesoscutum. 53. Mesopleuron. 54. Hind femur, lateral. 55. Metasoma. 56. Propodeum. 57. Forewing. 58. Hind wing.