Therophilus cattienensis, van Achterberg, Cornelis & Long, Khuat Dang, 2010

van Achterberg, Cornelis & Long, Khuat Dang, 2010, Revision of the Agathidinae (Hymenoptera, Braconidae) of Vietnam, with the description of forty-two new species and three new genera, ZooKeys 54, pp. 1-184 : 78-79

Therophilus cattienensis sp. n. Figs 229-237

Type material.

Holotype, ♀ (RMNH), "S. Vietnam: Dong Nai, Cat Tien N.P., Mal. traps, c. 100 m, 9.iv-13.v.2007, M.P. Quy, N.T. Manh & C. v. Achterberg, RMNH’07”. Paratype: 2 ♂ (IEBR, RMNH), "S. Vietnam: Dak Lak, Chu Yang Sin N.P., n[ea]r dam, 840-940 m, 2-10.vi.2007, Mal. traps, C. v. Achterberg & R. de Vries, RMNH’07”.

Diagnosis.

The new species is close to Therophilus lanyuensis (Chou & Sharkey, 1989) comb. n. from China, but differs by having the precoxal sulcus weakly crenulate and narrow ( Therophilus lanyuensis : distinctly crenulate and wide), the metapleuron rugose-punctate (lanyuensis: reticulate ventrally), the mesopleuron below the precoxal sulcus smooth (lanyuensis: densely punctate) and about 28 antennal segments (lanyuensis: 38-40).

Description.

Holotype, ♀, length of body 3.3 mm, of fore wing 2.6 mm, of ovipositor sheath 2.4 mm.

Head.

Antennal segments 28, length of third segment 1.2 times fourth segment, length of third, fourth and penultimate segments 4.0, 3.3 and 2.3 times their width, respectively; length of apical antennal segment 1.4 times as long as penultimate segment; maxillary palp 0.8 times height of head; malar space 2.5 times as long as basal width of mandible; in dorsal view length of eye 5.7 times temple; ocelli in high triangle (Fig. 236), POL:OD:OOL= 6:4:9; with two carinae between antennal sockets; face with distinct punctures; frons with distinct punctures laterally; vertex and temple shiny with sparse fine punctures.

Mesosoma.

Length of mesosoma 1.5 times its height; pronotal trough rugose, dorsally rugose-punctate; area near lateral carina of mesoscutum crenulate; mesoscutum shiny, sparsely punctate and setose; notauli complete, wide and largely crenulate; scutellar sulcus 0.5 times as long as scutellum with 3 carinae; scutellum without subposterior crest (Fig. 231), sparsely but distinctly punctate; precoxal sulcus weakly crenulate and narrow; mesopleuron below precoxal sulcus smooth; mesopleuron above precoxal sulcus with sparse distinct punctures; metapleuron rugose-punctate; propodeum reticulate-rugose.

Wings.

Fore wing: second submarginal medium-sized and triangular (Fig. 233); marginal cell narrow (Fig. 233); vein SR1 straight; r:3-SR+SR1=2:37. Hind wing: vein M+CU 1.3 times as long as vein 1-M (22:17).

Legs.

Length of hind femur, tibia and basitarsus 2.6, 5.0 and 7.5 times their width, respectively; hind femur (as remainder of legs) with short setae; length of outer and inner spur of middle tibia 0.4 and 0.6 times middle basitarsus, respectively; outer side of middle tibia with 4 pegs; length of outer and inner spur of hind tibia 0.3 and 0.5 times hind basitarsus, respectively (figs); tarsal claws with lobe.

Metasoma.

Length of first tergite 1.3 times its apical width (Fig. 232); first tergite coarsely longitudinally striate (rather costate); second tergite 0.9 times as long as third tergite, smooth but partly superficially granulate and with smooth transverse groove (Fig. 232); remainder of metasoma smooth; ovipositor sheath 0.9 times as long as fore wing.

Colour.

Brownish-yellow; propodeum, apex of hind tibia and hind tarsus, first tergite basally and third-seventh tergites largely dark brown; pterostigma dark brown; wing membrane subhyaline.

Variation.

Antennal segments of female 28, of male 30; outer side of middle tibia with row of 1-4 pegs; length of hind femur 2.6-3.0 times as long as wide; second tergite pale yellow (♀) or largely dark brown (♂), smooth or partly superficially granulate; length of body 3.2-3.3 mm, of fore wing 4.4-4.6 mm; head dorsally, mesopleuron partly and metapleuron of males dark brown or blackish.

Distribution.

S Vietnam: Dak Lak, Dong Nai.

Biology.

Unknown.

Etymology.

Named after the type locality: Cat Tien National Park.