Foenatopus acutistigmatus Chao, 1964

Hong, Chun-dan, van Achterberg, Cornelis & Xu, Zai-fu, 2011, A revision of the Chinese Stephanidae (Hymenoptera, Stephanoidea), ZooKeys 110, pp. 1-108 : 9-11

Foenatopus acutistigmatus Chao, 1964 Figs 2-11

Foenatopus acutistigmatus Chao 1964: 381-383, 389; Belokobylskij 1995: 19; Aguiar 2004: 18.

Type material.

Holotype, ♀ (CAZB), "CHINA: Yunnan, Xishuangbanna, Meng’a, 1050-1080 m., Chinese Academy of Sciences (C.A.S.)", "11.v.1958, Shu-yong Wang", “HOLOTYPE”, " Foenatopus acutistigmatus Chao, Holotype". Paratypes (2 ♀; CAZB): 1 ♀, id., but “20.v.1958”, “PARATYPE”, " Foenatopus acutistigmatus Chao, Paratype"; 1 ♀, id., but "11.x.1958, Zhi-zi Chen", “PARATYPE”, " Foenatopus acutistigmatus Chao, Paratype".

Other material.

1 ♀ (SCAU): CHINA: Guangdong, Mt. Nanling, 16.vi.2009, Wang Zi-chen, No. 200800190.

Diagnosis.

Vertex distinctly carinate, more coarsely near ocelli (Fig. 9); frons largely reddish brown, transversely carinate-rugose (Fig. 11); temple completely yellowish, smooth and shiny (Fig. 10), in dorsal view distinctly angulate (Fig. 9); pronotum with comparatively long parallel-sided anterior part, neck dorsally with complete transverse carinae (Fig. 3), laterally distinctly carinate or striate (Fig. 4); propodeum densely foveolate, foveolae and interspaces in between smooth (Fig. 5); pterostigma long and its apex distinctly acute; vein 2-CU1 of fore wing well developed, 0.7-0.9 times as long as vein cu-a (Fig. 2); hind femur ventrally with 2 large teeth, basally with 3-4 tubercles (Fig. 6); ovipositor sheath about 1.3 times as long as body, subapical whitish band 1.4-1.8 times as long as apical blackish part.

Description.

Redescribed after a female from Guangdong (Mt. Nanling), length of body 22.8 mm, of fore wing 11.6 mm, and of ovipositor sheath 28.9 mm.

Head. Flagellum with 38 flagellomeres; first flagellomere 3.9 times as long as wide, and 0.8 times as long as second flagellomere; anterior coronal teeth acute and moderately large, both posterior ones arcuate and smaller; frons coarsely transversely carinate-rugose, posteriorly both ends of carinae curved backwards to coronal area (Fig. 11); vertex with 4 strong and relatively short transverse carinae between posterior ocelli, followed by transversely carinate flattened area, carinae antero-medially coarse and strong, more or less rugose, posteriorly much finer and straight, reaching to part of gena (Fig. 9); temple smooth and shiny, angulate in dorsal view (Fig. 10).

Mesosoma. Neck (Figs 3, 4) moderately elongate, dorsally with complete transverse carinae, laterally distinctly carinate or striate, anteriorly distinctly deeply emarginate, medio-dorsally slightly concave; middle pronotum at lower level than posterior pronotum, superficially striate and punctate dorsally, laterally somewhat microreticulate; posterior pronotum anteriorly striate, posteriorly smooth and convex laterally; propleuron coriaceous and setose; prosternum densely striate, posteriorly with irregular small foveolae; mesoscutum anterior third striate, posteriorly coarsely foveolate-rugose; axillae largely coarsely rugose, medio-dorsally separated a large, deep fovea; scutellum largely smooth and shiny medially, and with a few foveolae laterally (Fig. 5); mesopleuron robust, dorsal flat part smooth, antero-ventrally rugose and with pubescence, remainder of ventral part largely striate and with some punctures; metapleuron ventrally crenulate, convex part of metapleuron and propodeum (Fig. 5) densely foveolate.

Wings. Fore wing (Fig. 2): wing membrane hyaline; vein 2-CU1 distinctly developed and 0.9 times as long as vein cu-a; vein cu-a distinctly curved; pterostigma moderately elongate and apically acute, 1.6 times as long as vein r and 12 times longer than its maximum width; vein r ends third length of pterostigma behind level of apex of pterostigma; vein SR1 subparallel to costal margin, vein SR1 and vein r obtuse-angled.

Legs. Hind coxa slender, shiny, anterior part rugose, remainder annular, finely transversely spaced striate; hind femur (Fig. 6) moderately slender, densely finely striate, apically somewhat coriaceous, ventrally with 2 large acute teeth and some denticles in between, teeth antero-ventrally distinct and triangular; basal narrow part of hind tibia coriaceous, 1.2 times as long as widened part, and with ventral carina, outer side of widened part of hind tibia coriaceous, inner side basally distinctly depressed, apically with densely bristly setose area; hind basitarsus slender, parallel-sided, its ventral length 6.8 times as long as its width.

Metasoma. First tergite very slender, cylindrical, densely finely transversely striate (Fig. 7), 17.6 times as long as its width and 2.1 times as second tergite; remainder slender, smooth and with a few sparse, short setae; pygidial area (Fig. 7) triangular, shallowly impressed laterally, somewhat granulate, and narrowly lamelliform posteriorly; subapical whitish band of ovipositor sheath 1.44 times as long as apical blackish part; length of ovipositor sheath 1.3 times as long as body.

Colour. Black, except parts as follows: frons largely reddish; temple with a wide yellowish streak; tibiae and tarsi of legs brown; wing membrane hyaline; subapical part of ovipositor sheath whitish.

Male. Very similar to female in structure and colour, but differs in size; body length up to 13 mm according to Chao (1964).

Variation. Female: length of body 18-23 mm, of fore wing 10-12 mm, and of ovipositor 23-29 mm; vein 2-CU1 0.7-0.9 times as long as vein cu-a, pterostigma 1.6-1.9 times as long as vein r and 12-16 times longer than its maximum width; first tergite 17.6-19.7 times as long as its maximum width and 2.1-4.2 times as second tergite; subapical whitish band of ovipositor sheath 1.4-1.8 times as long as apical blackish part.

Distribution.

Oriental China (Yunnan, Guangdong).