Proantrusa Tobias, 1998

Zheng, Min-Lin, Achterberg, Cornelis van & Chen, Jia-Hua, 2016, A new species of the genus Proantrusa Tobias (Hymenoptera: Braconidae: Alysiinae) from northwestern China, Florida Entomologist 99 (3), pp. 385-388 : 385

Proantrusa Tobias, 1998

Type species: Proantrusa kasparyani Tobias, 1998

Diagnosis

Head somewhat transverse in dorsal view;frons with a small and acute tubercle in front of anterior ocellus; clypeus hemi-circular, twice wider than high medially and face 1.6 to 1.7 times wider than clypeus ( Fig. 1 ); mandible with 3 similarly sized teeth; pronope medium-sized to obsolescent; propleuron glabrous or setose;notauli incomplete; metanotum with a distinct acute median spine or triangular protuberance;vein 1-SR of fore wing 3 to 7 times as long as its minimum width ( Fig.3 ); pterostigma of fore wing subtriangular, vein m-cu antefurcal;length of 1st tergite nearly equal to its apical width; 2nd tergite smooth or almost entirely longitudinally striate;combined length of 2nd and 3rd metasomal tergites 0.4 times total length of metasoma ( Fig.9 ); 3rd tergite smooth and as long as 2nd tergite; 4th and 5th tergites of ♀ smooth and exposed ( Figs. 8 and 9 ); setose part of ovipositor about 0.2 times as long as hind tibia.

Remarks

This genus is included in the Trachionus genus-group because of the spined metanotum and the medium-sized to long vein 1-SR of the fore wing despite the comparatively short 2nd and 3rd metasomal tergites. For the differences within the Trachionus genus-group , see the key below. The genus may be confused with the genus Laotris Nixon, 1943 because of the smooth 3rd tergite and the well-exposed 4th tergite, but differs by the different shape of the mandible and of the 1st tergite.

Distribution

East Palaearctic region (Russian Far East, northwestern China [new record]).

1 Beneficial Insects Institute, Fujian Agriculture and Forestry University,Fuzhou, Fujian Province, 350002, China; E-mail: [e-mail] (M.- L. Z.), jhchen34@163. com (J.- H. C.)

2 Key Laboratory of Resource Biology and Biotechnology in Western China (Northwest University), Ministry of Education;School of Life Sciences, Northwest University, 229 North Taibai Road, Xi’an, Shaanxi 710069, China; E-mail: [e-mail] (C. v. A.)

Figures

Figs. 1–9. Proantrusa tridentata sp. nov., female, holotype. 1, Head (frontal view); 2, head (dorsal view); 3, forewing; 4, hind tarsus;5, mesosoma (dorsal aspect); 6, mesosoma (lateral aspect); 7, propodeum; 8, metasoma (dorsal view with T1–4 visible); 9, metasoma (lateral aspect).