Chelonus (Megachelonus) macros, Zhang, Hong-Ying, Chen, Xue-Xin & He, Jun-Hua, 2006

Zhang, Hong-Ying, Chen, Xue-Xin & He, Jun-Hua, 2006, New species and records of the genus Chelonus Panzer, 1806 (Braconidae: Cheloninae) from China, Zootaxa 1209, pp. 49-60 : 56-57

Chelonus (Megachelonus) macros sp. nov.

( Figs. 3 A–F)

Description

Holotype, Ψ, length of body 5.55 mm, of fore wing 3.95 mm.

Head. Antennal segments 16; scapus robust, length of third segment 1.1 times fourth segment, length of third, fourth and penultimate segments 5.6, 5.1, 1.4 times their width, respectively; fourth­seventh segments strongly elongate ( Fig. 3 A); apical half of antenna segments somewhat compressed, their length distinctly longer than their width ( Fig. 3 A); length of maxillary palp 0.8 times height of head; head in dorsal view roundly contracted behind eyes; length of eyes 1.3 times length of temple in dorsal view; temple slightly narrowed posteriorly; OOL: OD: POL=20:11:29; vertex behind ocelli and temple transversely striate; frons distinctly concave, reticulate­rugose but smooth near the antennal sockets; face coarsely reticulate­rugose with longitudinal elements ( Fig. 3 B); clypeus flat and densely punctate, its width 2.5 times its median length, apical margin truncate medially ( Fig. 3 B); length of malar space 2.0 times basal width of mandible.

Mesosoma. Length of mesosoma 1.4 times its height; pronotum irregularly reticulate; mesoscutum coarsely reticulate, more strongly and coarsely rugose postero­medially; scutellum densely punctuate, shiny; scutellar suture comparatively deep with 6 carinae; mesopleuron evenly convex, densely reticulate­rugose; propodeum coarsely and densely alveolate­rugose, with weak transversal carina connected with two pairs of blunt tubercles, lateral tubercles bigger than medial ones.

Wings. Length of fore wing 2.8 times its width; length of radial cell along metacarp almost as long as that of pterostigma; 2­R1 just present; r almost as long as 3­SR; vein SR1 complete and straight, and length of SR1 4.2 times length of 3­SR; r: 3­SR: SR1=11: 10: 42; length of 2­CU1 2 times length of 1­CU1; CU1b present ( Fig. 3 C).

Legs. Hind coxa shallowly punctate; hind femur robust; length of femur, tibia and basitarsus of hind leg 2.5, 4.4 and 5.0 times their maximum width, respectively; length of hind tibial spurs 0.4 times hind basitarsus.

Metasoma. Length of metasoma 2.0 times its maximum width in dorsal view; metasomal carapace densely alveolate­rugose, with two longitudinal carinae basally ( Fig. 3 D) and two ventral­apical tooth­like protuberances and undulating lamella around ventral opening ( Fig. 3 D, E, F); lamella rather long and wide, and with longitudinal carinae ( Fig. 3 D); ovipositor long, slender and curved.

Colour. Black; palp light yellow; mandible reddish brown except for its base blackish brown; tegulae black; wings infumated, with a transparent belt along medial vein; pterostigma blackish brown; carapace with a large pair of yellow spots basally, fore leg yellowish except femur dark brown; mid leg yellowish, hind leg black except trochanter yellowish; hind tibia with a light yellow belt medially.

Material

Holotype, Ψ, China: Longwang Mt., Anji, Zhejiang province, 18.VII.1995, Hong Wu, No. 970541 ( ZJUH). Paratype, 1Ψ, China: Tianmu Mt., Zhejiang province, 1.VII.1998, Mingshui Zhao, No. 20002578 ( ZJUH).

Figures

FIGURE 3. Chelonus (Megachelonus) macros sp. nov. antenna (A), head, frontal view (B), wings (C), metasoma, lateral view (D), metasoma, lateral view (E), metasoma, ventral view (F).