Protodacnusa longicaudatus, Mao, Juan, He, Jun-Hua & Chen, Xue-Xin, 2015

Mao, Juan, He, Jun-Hua & Chen, Xue-Xin, 2015, The discovery of the genus Protodacnusa Griffiths, 1964 (Hymenoptera: Braconidae, Alysiinae) in China, with descriptions of six new species, Zootaxa 3990 (3), pp. 355-368 : 363

Protodacnusa longicaudatus sp. nov.

( Fig. 4 )

Holotype. ♀, China, Inner Mongolia, Helan mountain, 9.VIII.2010, Zeng Jie, No. 201006111 ( ZJUH).

Description. Female. Body length 2.8 mm; fore wing length 3.1 mm.

Head. Antenna shorter than body, 26-segmented. First flagellar segment 3.0 × as long as its apical width, 1.2 × as long as second segment, penultimate segment 1.4 × as long as wide. Head width 2.0 × its median length, 1.6 × as broad as mesoscutum between tegulae. Vertex glabrous. Frons weakly concave, smooth. Temple smooth, with sparse setae, swollen behind eyes in dorsal view ( Fig. 4 B). Transverse diameter of eye 0.9 × as long as temple in lateral view. Ocelli small, in triangle with base equal to its sides. POL: OD: OOL=3.3: 1.0: 2.0. Eye glabrous, 2.3 × as high as broad. Malar space short, 0.3 × basal width of mandible. Face smooth, with a weak longitudinal carina ( Fig. 4 C). Occipital carina complete absent. Mandible with three distinctly developed teeth, apical width 1.3 × its basal width; first tooth of mandible expanded, obtuse, second tooth pointed ( Fig. 4 E), third tooth broadly truncate ( Fig. 4 C). Palpi shorter than height of head.

Mesosoma. Length 1.2 × as long as its height in lateral view. Pronope small. Sides of pronotum smooth. Mesoscutum mostly smooth, with punctures and sparse setae. Notauli indistinct, shallow anteriorly, ( Fig. 4 H). Prescutellar depression deep, with four longitudinal carinae. Scutellum mostly smooth. Mesopleuron punctate. Precoxal sulcus absent ( Fig. 4 F). Metanotum with a median tooth. Metapleuron with dense long setae. Propodeum finely rugose, with long white setae, median carina absent, lateral tubercles present.

Wings. Fore wing 2.0 × as long as its maximum width. Pterostigma parallel-sided, 8.3 × as long as wide. Vein r arising from basal third of pterostigma, its length longer than width of pterostigma. First discal cell of fore wing narrow, not wider than high. Wein 1-R1 long, 0.6 × as long as pterostigma, ending near the tip of wing. Vein SR1+3-SR evenly curved. Vein m-cu antefurcal. Subdiscal cell distally closed, vein CU1b developed ( Fig. 4 D).

Legs. Hind coxa smooth. Hind femur 5.0 × as long as its maximum width. Hind tibia as long as its tarsus in length. Hind basitarsus as long as tarsomeres 2–3 combined.

Metasoma. First tergite subparallel-sided beyond pair of spiracles, broader apically, longitudinally rugulose, dorsope absent, its length 1.2 × as long as its apical width ( Fig. 4 G). Second tergite and third tergites fused, smooth, with one row of setae along its hind margin. Remaining tergites polished, with one row of setae along their hind margin respectively. Hypopygium acute apically. Ovipositor sheath long, as long as hind tarsus ( Fig. 4 A).

Colour. Head and mesosoma black. Palpi and mandible yellow and the second tooth apically dark brown. Antenna pale brownish. Wings hyaline, pterostigma and veins opaque light brown. Legs yellow, all coxae dark brown. Metasoma brown except first tergite black.

Male. Unknown.

Host. Unknown.

Diagnosis. This new species is similar to P. m e r i v a Papp, but differs in head width 2.0 × its median length; mesosoma 1.2 × as long as high in lateral view; pterostigma parallel-sided, 8.3 × as long as wide; vein 1-R1 long, 0.6 × length of pterostigma; and vein r longer than width of pterostigma.

Distribution. China (Inner Mongolia).

Etymology. The name refers to the long ovipositor.

Figures

FIGURE 4. Protodacnusa longicaudatus sp. nov., ♀, holotype. A. habitus, lateral aspect; B. head, dorsal aspect; C. head, frontal aspect; D. fore wing; E. mandible, lateral aspect; F. mesosoma, lateral aspect; G. metasoma, dorsal aspect; H. mesonotum, dorsal aspect. Scale bar = 5 mm.