Canalirogas spilonotus (Cameron, 1905)

Long, Khuat Dang & van Achterberg, Cornelis, 2015, Review of the genus Canalirogas van Achterberg & Chen (Hymenoptera, Braconidae, Rogadinae) from Vietnam, with description of ten new species, ZooKeys 506, pp. 27-59 : 40-41

Taxon classification Animalia Hymenoptera Braconidae

Canalirogas spilonotus (Cameron, 1905) Figs 57-64

Troporhogas spilonotus Cameron, 1905: 93. Lectotype female (BMNH: Hym. Type 3c.222 from Sri Lanka) examined and here designated.

Canalirogas spilonotus Quicke & Shaw, 2005: 3531.

Canalirogas balgooyi van Achterberg & Chen, 1996: 70-73 (description). Syn. n.

Material.

Specimens examined from North and North Central and South Vietnam (IEBR, RMNH and VNMN): Ha Giang (Vi Xuyen), Hoa Binh (Mai Chau, Yen Thuy), Ninh Binh (Cuc Phuong NP), Ha Tinh (Huong Son, Vu Quang NP), Phu Tho (Tan Son), Vinh Phuc (Me Linh; Tam Dao NP), Dông Nai (Cat Tien NP).

Description.

Figured female from Cát Tiên National Park, body length 7.1 mm, fore wing length 5.5 mm.

Head. Antenna with 51 segments, 1.7 times as long as fore wing; middle and subapical segments 2.6 and 2.5 times longer than wide, respectively; third antennal segment 1.3 times as long as fourth segment; width of face 0.8 times length of face and clypeus combined; clypeus flat in lateral view (Fig. 59); malar space 0.6 times as long as basal width of mandible; basal width of mandible 0.7 times as long as width of hypoclypeal depression; malar suture deep; distance between tentorial pits 3.9 times distance between pits and eyes (Fig. 58); length of eye in dorsal view 7.8 times as long as temple (Fig. 61); width of eye in lateral view 5.6 times as long as temple; ocelli large, POL:Od:OOL = 5:14:5; distance between front and hind ocelli as long as OOL (Fig. 61); face weakly rugose sublaterally, remainder of face, frons, vertex and temple smooth.

Mesosoma. Length of mesosoma 1.3 times as long as high; pronotal side smooth dorsally, coarsely crenulate medially and superficially granulate ventrally; precoxal sulcus only posteriorly absent and finely crenulate (Fig. 59); mesopleuron and metapleuron largely smooth; mesoscutum smooth, except some punctulation; notauli narrow, shallow posteriorly and finely crenulate; scutellar sulcus 0.6 times as long as scutellum and with 3 long crenulae (Fig. 60); scutellum smooth except some striae posteriorly; propodeum densely finely punctate dorsally, except carinate median areola and laterally rugose (Figs 60, 62).

Wings. Fore wing: pterostigma 4.9 times as long as wide; r:2-SR:3-SR:SR1 = 10:14:18:43; vein r emerging little before middle of pterostigma; vein cu-a short and slender (Fig. 57), 1-CU1:cu-a:2-CU1:3-CU1 = 1:5:24:4; posterior length of second submarginal cell 3.4 times its apical width. Hind wing: vein M+CU:1-M: 1r-m = 30:26:16; vein SR unsclerotised.

Legs. Hind coxa shiny and with sparse fine punctures; length of hind femur:tibia:basitarsus: tarsus = 50:64:31:78; length of hind femur, tibia and basitarsus 6.2, 11.4 and 11.6 times as long as their width, respectively (Fig. 63); inner hind tibial spur 0.3 times as long as basitarsus.

Metasoma. First tergite 1.5 times as long as apical width and slightly widened posteriorly (Fig. 62); first-third tergites with costate and somewhat oblique striation; fourth-fifth tergites with more divergent striation; medial length of second tergite 1.6 times than third segment; second suture crenulate; ovipositor sheath truncate apically and half as long as hind basitarsus; ovipositor rather stout (Fig. 64).

Colour. Pale yellow or ivory; antennal segments pale brown with yellow transverse bands (Fig. 58); stemmaticum, propleuron partly, mesopleuron antero-dorsally, mesoscutum laterally, metanotum partly laterally, propodeum (except areola, narrowly posteriorly and partly latero-posteriorly), inner and outer side of hind coxa, metasomal tergites 1-5 basally and medio-posteriorly (but of third-fifth tergites partly brown antero-laterally), tergite 6 entirely dorsally (Fig. 57) and apex of ovipositor sheath narrowly dark brown (Fig. 64); telotarsi brown; wings largely slightly infuscate; veins (but of apical third of wing unpigmented) and pterostigma medially dark brown; remainder of pterostigma and parastigma yellow.

Male.

Unknown.

Variation.

Antennal segments of female 44(1), 48(1), 50(1) or 51(1); first tergite 1.2-1.5 times as long as apical width (Fig. 57); medial length of second tergite 1.5-1.6 times as long as third tergite medially; body length 6.2-7.1 mm; fore wing length 4.6-5.5 mm.

Notes.

This conspicuous species has the eyes in dorsal view 6-8 times longer than temple (Fig. 61) and in lateral view width of eye about 3.8 times temple (15:4; Fig. 59); ovipositor stout (Fig. 64). The lectotype of Canalirogas spilonotus (Cameron) designated in this paper falls within the (rather wide) variation limits of Canalirogas balgooyi and is, therefore, considered to be a senior synonym of the latter.