Zelodia bicoloristigma, 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 : 122-125

Zelodia bicoloristigma sp. n. Figs 427-435

Type material.

Holotype, ♀ (RMNH), "NW Vietnam: Tonkin, Hoang Lien N.P., 10 km SW Sa Pa, c. 1550 m, 23.x.1999, at light, C. v. Achterberg, RMNH’99”. Paratypes (4 ♀ + 6 ♂): 2 ♀ (RMNH), same data as holotype, but 22-29.x.1999, Malaise traps; 2 ♂ (RMNH), Aga. 297 & 288, "CN Vietnam: Nghe An, Con Cuong, Pu Mat N.P., 15 & 17.iv.2006, P.Th. Nhi"; 1 ♀ (IEBR), id., but Aga. 181, 22-25.vii.2004, Tr.X. Lam; 1 ♂ (IEBR), Aga 083, "Central North Vietnam (Truong Son range): Ha Tinh, Huong Son, Rao An, forest, 11.v.1998, K.D. Long"; 1 ♂ (IEBR), Aga. 186, "Northwest Vietnam: Lai Chau, Muong Lay, Hat Tre, forest fragment, 10.x.2004, K.D. Long"; 1 ♀ (IEBR), Aga. 192, "Northeast Vietnam: Phu Tho, Xuan Son N.P., forest, 5.v.2005, P.T. Nhi"; 1 ♀ + 1 ♂ (IEBR), Aga. 315 and 316, "Central Vietnam: Thua Thien-Hué, Bach Ma N.P., 600 m, 18 & 19.v.2007, K.D. Long".

Diagnosis.

The new speciesis similar to Zelodia quadrifossulata (Enderlein), but the latter differs by having the pterostigma entirely brown, the hind leg dark brown and the metasoma (except for the more or less yellowish or brownish first and second tergites) black.

Description.

Holotype, ♀, length of body 7.6 mm, of fore wing 8.6 mm.

Head.

Antennal segments 43, densely bristly setose, length of third segment 1.1 times as long as fourth segment; length of third, fourth and penultimate segments 2.6, 2.3 and 1.8 times their width, respectively; penultimate segments half as long as apical segment; scapus long somewhat compressed, nearly twice as long as wide; length of maxillary palp 0.6 times as long as height of head; in dorsal view length of eye 2.3 times as long as temple (Fig. 433); temple punctulate and setose, in lateral view 0.6 times width of eye (Fig. 428); POL:OD:OOL = 6:5:10; malar space twice as long as basal width of mandible, 0.4 times as long as eye height and 0.3 times as long as height of head in lateral view (Fig. 434); face distinctly punctate, interspaces somewhat larger than punctures; frons shiny, smooth (except for some punctures) and without lateral carinae; vertex shiny, sparsely finely punctate; pair of crests between antennal sockets rather weakly developed, convergent; occipital flange large, its ventral margin round (Fig. 428).

Mesosoma.

Length of mesosoma 1.4 times its height; subpronope large, moderately deep; side of pronotum smooth, but dorsally upper side sparse finely punctate and crenulate postero-ventrally; area near lateral carina of mesoscutum slightly crenulate; middle lobe of mesoscutum distinctly punctate; lateral lobe of mesoscutum less densely and finer punctate than middle lobe except near notauli; notauli narrow, deep and nearly smooth (Fig. 429); scutellar sulcus subequal to dorsal part of scutellum and with transverse subposterior crest; scutellum rather coarsely punctate (Fig. 429); prepectal carina strong, rather lamelliform and crenulate behind it; precoxal sulcus moderately narrow and rather deep but absent anteriorly, moderately crenulate (Fig. 428); mesopleuron sparsely finely punctate; mesosternal sulcus narrow and finely crenulate; upper half of metapleuron coarsely punctate, lower side with strong vermiculate rugose; propodeum shiny and coarsely areolate and short medial carina basally (Fig. 429); propodeal spiracle elliptical, 2.5 times as long as wide; distance between spiracle and lateral carina equal to width of spiracle.

Wings.

Fore wing: second submarginal cell narrowed anteriorly and r-m nearly straight (Fig. 430); r:3-SR:SR1 = 10:5:171; 2-SR:3-SR:r-m = 25:5:22. Hind wing: M+CU 0.67 times as long as 1-M; surroundings of cu-a sparsely seto

Legs.

Hind coxa dorsally punctate and pimply; length of hind femur, tibia and basitarsus 4.5, 6.7 and 8.2 times their width, respectively; outer side of hind coxa punctate-pimply; hind femur and tibia with rather long setae ventrally (Fig. 431); outer side of apex of hind tibia with two pegs; outer and inner spurs of middle tibia 0.5 and 1.0 times as long as middle basitarsus, respectively; length of outer and inner spurs of hind tibia 0.4 and 0.7 times hind basitarsus.

Metasoma.

First tergite rather slender and smooth; length of first tergite 2.1 times its apical width (Fig. 435); length of second tergite 0.8 times apical width; second metasomal suture obsolescent (Fig. 435); ovipositor sheath densely setose apically elliptical, 0.5 times as long as hind basitarsus and 0.11 times fore wing.

Colour.

Yellowish-brown, but mesoscutum largely somewhat darkened and first and second tergites pale yellowish; hind coxa, trochantellus, trochantellus and largely femur, hind tibial spurs, ovipositor sheath, scapus and pedicellus largely dark brown; remainder of antenna, apex of hind tibia and tarsus blackish; wings subhyaline but near parastigma and vein r infuscate; parastigma, apical part of vein C+SC+R, apical half of pterostigma and veins of apical half of fore wing largely dark brown.

Variation.

Antennal segments 43-44; face moderately coarsely to finely spaced punctate; length of first tergite 1.7-2.1 times as long as its apical width; first and second tergites ivory or pale yellowish; mesosternum and third tergite more or less darkened. Males have basal third of pterostigma yellow and remainder dark brown.

Distribution.

NW Vietnam: Lao Cai, Lai Chau; NE Vietnam: Phu Tho; CN Vietnam: Nghe An, Ha Tinh and C Vietnam: Thua Thien-Hué.

Biology.

Unknown.

Etymology.

From “bi” (Latin for “two”), “coloris” (Latin for "hue, tint") and “stigma” (Greek for “mark”), because of the two colours of the pterostigma.