Blacus (Tarpheion) latestigma, Papp, 2012

Papp, Jeno, 2012, Five new braconid species from Colombia (Hymenoptera, Braconidae), Journal of Hymenoptera Research 28, pp. 67-84 : 77-79

Blacus (Tarpheion) latestigma sp. n. Figures 41-50

Holotype ♀:

COLOMBIA, Amazonas, PNN Amacayacu San Martin, 150 m, 3°23'S, 70°6'W, Malaise trap, leg. B. Amado. Holotype is in good condition: (1) glued on a card point by the right metapleuron, (2) right femur + tibia in glue, hardely visible, (3) left hind leg on the right side owing to the mounting.

Etymology.

The name latestigma refers to the wide pterostigma.

Description.

Body 2.5 mm long. Antenna somewhat longer than body and with 25 antennomeres. First flagellomere six times as long as broad apically and 1.5 times as long as second flagellomere, subsequent flagellomeres shortening so that penultimate flagellomere twice as long as broad. Head in dorsal view ( Fig. 41 ) distinctly twice as broad as long, eye almost four times as long as temple, temple receding. Occiput carinate. Ocelli elliptic, OOL twice as long as POL. Malar suture present. Maxillary palp somewhat longer than height of head. Eye in lateral view 1.3 times as high as wide. Head polished.

Mesosoma in lateral view 1.4 times as long as high. Notauli distinct, smooth. Precoxal suture short with weak crenulae. Lateral carina of scutellum missing. Propodeum rugose (like Fig. 101 in van Achterberg 1976: 64). Hind femur five times as long as broad distally ( Fig. 11 ). Claw simple, basal lobe distinct ( Fig. 43 ).

Fore wing almost as long as body. Pterostigma wide ( Fig. 44 ), 2.6 times as long as wide, r issuing somewhat distal to middle, r 0.8 times as long as width of pterostigma. 2-SR nearly 1.6 times as long as r, 3-SR + SR1 slightly bent and reaching tip of wing, 2-M short. First subdiscal cell open distally ( Fig. 45 , see arrow). Hind wing: cu-a slightly proximal to middle of vein M+CU + 1-M ( Fig. 46 , see arrow).

First tergite long and hardly broadening posteriorly ( Fig. 47 ), 2.2 times as long as broad posteriorly, pair of keels distinct, finely striate. Second tergite almost 1.9 times as broad posteriorly as long, anteriorly strio-rugulose. Further tergites polished. Hypopygium fairly large, ovipositor sheath downcurved, somewhat longer than hind tibia.

Scape, pedicel and flagellomeres 1-2 straw yellow, rest of flagellum brown. Head brownish yellow, occiput brown, mouthparts whitish. Mesosoma blackish brown, tegula brown. Legs yellow, coxae and trochanters straw yellow. First tergite blackish brown, further tergites brown, anterior sternites whitish. Wings hyaline, pterostigma brown, parastigma whitish, veins opaque brown.

Male and host

unknown.

Distribution.

Colombia.

Diagnosis.

The new species, Blacus (Tarpheion) latestigma , runs to Blacus (Tarpheion) erugatus van Achterberg with the help of van Achterberg’s keys (1976: 186, 1988: 140-141); the two species differ from each other by a few features.

1(2)	Fore wing: pterostigma narrower, 3-3.3(3.6) times as long as wide, r as long as width of pterostigma, 2-M long ( Fig. 48 ). Eye in dorsal view 2.3 times as long as temple, temple slightly less receding, head in dorsal view slightly less transverse: 1.9 times as broad as long ( Fig. 49 ). Hind femur 5.5-6.2 times as long broad distally ( Fig. 50 ). First tergite more broadening posteriorly (Fig. 101 in van Achterberg 1976: 264). Antenna with 20-23 antennomeres. Ground colour of mesosoma reddish brown, head brown, face brownish yellow. ♀♂: 1.9 mm. - Brazil, Costa Rica, Ecuador	Blacus (Tarpheion) erugatus van Achterberg, 1976
2(1)	Fore wing: pterostigma wide, 2.6 times as long as wide, r 0.8 times as long as width of pterostigma, 2-M short ( Fig. 44 ). Eye in dorsal view 3.8 times as long as temple, temple slightly more receding, head in dorsal view clearly transverse, twice as broad as long ( Fig. 41 ). Hind femur five times as long as broad distally ( Fig. 42 ). First tergite hardly broadening posteriorly ( Fig. 46 ). Antenna with 25 antennomeres. Ground colour of mesosoma blackish brown, head brownish yellow, occiput brown. ♀: 2.5 mm. - Colombia	Blacus (Tarpheion) latestigma sp. n.

Taxonomic remark. Blacus (Tarpheion) erugatus is known to the author by a pair of female specimens, their data: (a) Costa Rica, Puntar, Golfo Dulce, 24 km W Piedras-Blancas, 200 m, June-August 1989, leg. Hanson; (b) Costa Rica, Carthago Pr., La Cangreja, 1950 m, October 1991, leg. Hanson. Both females identified by S.R. Shaw in 1999 and in the Hungarian Natural History Museum (Budapest) by exchange of material. The species is new to the fauna of Costa Rica.

Figures

Figures 41 - 50. 41 - 47 Blacus (Tarpheion) latestigma sp. n.: 41 head in dorsal view 42 hind femur 43 claw 44 distal part of right fore wing 45 first subdiscal cell 46 hind wing: M + CU + 1 - M + cu-a 47 tergites 1 - 2. 48 - 50 Blacus (Tarpheion) erugatus van Achterberg: 48 distal part of right fore wing 49 head in dorsal view 50 hind femur.

Figures 10 - 16. Synaldis cauca sp. n.: 10 head in dorsal view 11 head in lateral view 12 mandible 13 paraclypeal pit 14 propodeum 15 hind femur 16 tergites 1 - 2.