Iporhogas tricoloratus, Long, Khuat Dang, 2014

Long, Khuat Dang, 2014, New records of the genus Iporhogas Granger (Hymenoptera, Braconidae, Rogadinae) from Vietnam, with description of four new species, ZooKeys 428, pp. 79-96 : 87-89

Taxon classification Animalia Hymenoptera Braconidae

Iporhogas tricoloratus sp. n. Figs 3, 4, 24-30

Material.

Holotype, female (VNMN), ‘Rog.629’, "[NC Vietnam:] Quang Binh, Xuan Trach, Phong Nha-Ke Bang NP, forest, sweeping net, 18.iv.2010, KD Long". Paratypes: 10 males, ‘Rog.053’ (VNMN), "[NW Vietnam:] Hoa Binh, Yen Thuy, forest, 20°28'12N, 105°34'40E 80m, 4.v.2002"; ‘Rog.259’ (VNMN), "[NW Vietnam:] Hoa Binh, Yen Thuy, forest, MT 20°23'06N, 105°34'11E 300m, 10-20.vii.2002; KD Long"; 'Rog.360, Rog.361, Rog.362' (VNMN), ‘Rog.363’ (RMNH), "[NW Vietnam:] Son La, Moc Chau, Xuan Nha NR, forest, 11.x.2004, KD Long"; ‘Rog.495’ (VNMN), "[NE Vietnam:] Ha Giang, Vi Xuyen, Cao Bo, forest, 300m, 11.v.2007, KD Long"; ‘Rog.555’ (VNMN), "[NE Vietnam:] Ha Giang, Vi Xuyen, Ngoc Duong, bushes, 18.x.2006, KD Long"; ‘Rog.598’ (VNMN), "[NE Vietnam:] Vinh Phuc, Tam Dao NP, 200m, 05.ix.2008, KD Long"; ‘Rog.633’ (VNMN), "[NW Vietnam:] Phu Tho, Xuan Son, MT 21°14'N, 104°57'E 140m, 1-5.x.2009, KD Long, NH Thao".

Description.

Holotype, female, body length 6.3 mm, fore wing length 5.0 mm (Fig. 3).

Head. Antenna with 47 segments; middle segments 2.8 times longer than wide (7.0:2.5); third segment 1.1 times fourth (8:7); width of face as long as length of face and clypeus combined; malar space 0.7 times as long as mandible width (5:7); mandible width 0.9 times as long as hypoclypeal depression (7:8); malar suture present; in dorsal view, height of eye 3.4 times as long as temple (17:5), occipital carina roundly concave (Fig. 24); in lateral view, width of eye 4.2 times as long as temple (25:6); POL:Od:OOL=2:5:3.5; distance between anterior and posterior ocelli 0.6 times as long as OOL (2:3.5) (Fig. 24); face rugose medially, transversely striate laterally; frons smooth with divergent striae close to antennal sockets; vertex with fine transverse striae; temple smooth.

Mesosoma. Length of mesosoma 1.5 times as long as high (73:50); propleuron deep and crenulate anteriorly, shallower posteriorly and finely crenulate; mesoscutum shiny with deep groove medially (Fig. 26), finely sparsely punctate; notauli narrow, deep and crenulate anteriorly, flat and smooth posteriorly; scutellar sulcus 0.6 times as long as scutellum (6:10), with 3 carinae (Fig. 26); scutellum almost smooth; precoxal sulcus short and shallow, crenulate (Fig. 28); mesopleuron sparsely and finely punctate anteriorly, smooth posteriorly; mesosternum sparsely punctate; metapleuron finely punctate; propodeum areolate medially, depressed posteriorly, sparsely punctate anteriorly, almost smooth posteriorly (Fig. 25).

Wings. Fore wing: pterostigma 4.6 times as long as wide (32:7); r:2-SR:3-SR:SR1=7:11:18:45; vein r arising near middle of pterostigma; vein 1-SR+M weakly S-shaped; vein cu-a distinctly postfurcal (Fig. 29), 1-CU1:cu-a:2-CU1:3-CU1=2:4:21:4; basal length of second submarginal 3.2 times as long as its apical width (35:11). Hind wing: vein M+CU 1.4 times as long as 1-M; M+CU:1-M:1r-m=35:25:13; vein 2-SC+R subquadrate (Fig. 30).

Legs. Upper side of hind coxa shiny and with sparse fine punctures; length of hind femur, tibia and basitarsus 4.8, 8.4 and 9.0 times as long as their width, respectively; inner hind tibial spur 0.4 times as long as basitarsus (11:30); hind tarsal claw with large lobe.

Metasoma. First tergite 1.3 times as long as its apical width (37:28) (Fig. 27); first-second tergites with medial carinae and sparse longitudinal striae, third-fifth tergites without medial carina and densely striate, sixth tergite sparsely striate; medial length of second tergite 1.6 times than third (33:21); second suture wide, crenulate; hypopygium with long rather dense setae; ovipositor sheath as long as hind basitarsus.

Colour. Tricoloured body; scapus and pedicellus yellowish brown; antennal segments brown; palpi pale yellow; eyes brown; mesosoma yellow; fore and middle legs yellow; hind leg black, except coxa, trochanters and trochantellus black; hind tibia and tarsus brown; pterostigma and wing veins yellowish brown; first metasomal tergite black medio-basally, white apically and baso-laterally; second tergite white, except black apex; third-fifth tergites black entirely; sixth tergite entirely white; hypopygium white; ovipositor sheath 0.7 times as long as hind inner spur (8:11).

Variation.

Paratypes (males; Fig. 4), antenna with 36-43 segments; first tergite 1.1-1.3 times as long as its apical width; medially second metasomal tergite 1.3-1.5 times as long as third tergite medially; body length 4.5-5.2 mm; fore wing length 3.6-4.4 mm.

Mesopleuron of males sometimes with fine transverse crenulae anteriorly; mesopleuron rugose-punctate anteriorly; fore and middle legs pale yellow; hind coxa and femur brown; hind tibia and tarsus yellowish brown; pterostigma and wing veins of males yellow or yellowish brown; first and second metasomal tergites white or ivory, except black spot at base of first and at apex of second tergite; third-fourth tergites black, except white basal corners; fifth and sixth tergites entirely white.

Distribution.

NW Vietnam: Lai Chau (Tam Duong), Hoa Binh (Yen Thuy), Phu Tho (Xuan Son); NE Vietnam: Ha Giang (Vi Xuyen), Vinh Phuc (Tam Dao NP); NC Vietnam: Quang Binh (Phong Nha-Ke Bang NP).

Biology.

Unknown.

Etymology.

From “tri” (Latin for “three”), and “coloris” (Latin for "hue, tint"), because of the tricoloured body.

Notes.

Iporhogas tricoloratus sp. n. differs from Iporhogas chinensis Chen & He, 1997, from China by having: the ocelli large; metapleuron finely punctate and vein M+CU of hind wing comparatively long, 1.4 times as long as vein 1-M. The new species differs from Iporhogas flavistigma Chen & He, 1997, from China by having the occipital carina in dorsal view roundly concave; metapleuron finely punctate and hind coxa finely punctate.