Foenobethylus hainanensis Liu, Chen et Xu

Liu, Jingxian, Chen, Huayan & Xu, Zaifu, 2011, Two new species of the genus Foenobethylus Kieffer 1913 (Hymenoptera: Bethylidae) from China with a key to the known species, Zootaxa 2806, pp. 53-59 : 54-56

Foenobethylus hainanensis Liu, Chen et Xu , sp. nov.

( Figs 1–6 , 13–15 )

Type material. Holotype, male. CHINA: Hainan, Mt. Bawangling (19º11'N, 109º15'E), 7– 11.VII,2006, Jing-xian LIU, No. 200700003. Paratypes: 2 males with the same data as holotype, No. 200700013, No. 200700029.

Diagnosis. This species is similar to Foenobethylus bidentatus Várkonyi et Polaszek, 2007 from Brunei by having the hind trochanter without a ventral tooth and hind femur with two ventral teeth, but it can be separated from the latter by having head distinctly narrowed behind compound eyes in dorsal view, the distance between posterior margin of compound eye and occipital carina longer than length of compound eye in dorsal view and subgenital plate with distal margin strongly emarginate.

Description. Holotype. Male. LH 0.5 mm, WH 0.35 mm, WF 0.2 mm, LPD 0.35 mm, WPD 0.2 mm, LFW 2.0 mm.

Head. Head ( Figs 1–3, 5 ) in dorsal view 1.42 times as long as wide, elongate; frons and vertex coriaceous and sparsely punctate. Ocellar triangle forms a more or less right angle at the anterior ocellus. Mandible with five teeth.

Median lobe of clypeus rounded. Antenna with 13 segments, flagellum with suberect and short pubescence. Ratio of length to width of antennal segments as follows: 10:4, 5:3, 5:3, 4:3, 4:3, 4:3, 4:3, 4:3, 4:3, 4:3, 5:3, 5:3, 5:3; scape incrassate apically. Compound eyes small and bare. Distance between posterior margin of compound eye and occipital carina 1.2 times the length of compound eye in dorsal view. Distance between occipital carina and posterior ocelli 1.6 times the length of maximum diameter of the latter. POL: OOL: OL: DAO =8: 20: 5: 3. Terminal segment of maxillary palpus 2.5 times as long as wide.

Mesosoma. Mesosoma ( Figs 2, 3, 5 ) 3.1 times as long as depth and 2.2 times as long as wide. Pronotum ( Figs 1–3 ) coriaceous, elongate and narrowed anteriorly, without horizontal shelf protruding above base of propleuron. Mesoscutum transverse, 0.6 times as long as wide; notauli complete with anterior 0.8 weak; parallel lines weakly present. Scutellum flat and coriaceous. Metanotum emarginated centrally. Propodeum finely coriaceous, nearly smooth; propodeal disc 1.2 times as long as wide; median carina of propodeum with basal 0.6 strong and apical 0.4 indistinct, with weak wrinkles on its lateral sides.

Wings. Fore wing ( Figs 1, 4 ) with costal, median and submedian cells closed. Radius with a weak node on basal 1/7.

Legs. Fore femur ( Fig. 5 ) moderately swollen, 2.6 times as long as its maximum width. Hind trochanter without ventral tooth; hind femur ( Fig. 6 ) with a long basal tooth on lateroventral edge and with a short and broad tooth ventrally.

Metasoma. Eighth sternum ( Fig. 15 ) with distal margin moderately emarginate, centrally with sparse setae. Subgenital plate ( Fig. 14 ) with distal margin strongly emarginated, with long setae.

Male genitalia. Distal part of parameres ( Fig. 13 ) with long setae, central part weakly narrowed. Volsella with digitus not clear. Aedeagus as in Fig. 13 .

Colour. Head black, with antennae dark brown. Mesosoma and metasoma blackish brown. Legs dark brown, with tibia and tarsus brown.

Variation. LH 0.6 mm, WH 0.36 mm, WF 0.25 mm, LPD 0.45 mm, WPD 0.3 mm, LFW 2.5 mm.

Distribution. China (Hainan).

Etymology. The specific name refers to the type locality.

Figures

FIGURES 1 – 6. Foenobethylus hainanensis sp. nov. 1. Habitus, dorsal view. 2. Head and mesosoma, dorsal view. 3. Head, pronotum and mesoscutum, dorsal view. 4. Fore wing. 5. Head and mesosoma, lateral view. 6. Hind leg.

FIGURES 13 – 18. Foenobethylus hainanensis sp. nov. (13 – 15) and F. zhejiangensis sp. nov. (16 – 18). 13, 16. Male genitalia. 14, 17. Subgenital palte. 15, 18. Eighth sternum.