Gasteruption corniculigerum Enderlein, 1913

Zhao, Ke-xin, Achterberg, Cornelis van & Xu, Zai-fu, 2012, A revision of the Chinese Gasteruptiidae (Hymenoptera, Evanioidea), ZooKeys 237, pp. 1-123 : 32-37

Gasteruption corniculigerum Enderlein, 1913 Figs 7994

Gasteruption corniculigerum Enderlein, 1913: 322-323; Hedicke 1939: 27; Pasteels 1958: 176-177, fig. 1.

Type material.

Lectotype here designated, ♀ (DEI), "[China:] Formosa [= Taiwan], Taihorin, 7.VIII.1911, H. Sauter", “Syntypus”, " Gasteruption corniculigerum Enderl., ♀, Type, Dr. Enderlein, det. 1913", "Dtsch. Entomol. Institut Berlin". Paralectotypes: 1 ♂ (DEI), topotypic and same date. In DEI and PAN are 3 female paralectotypes (from Taihorin, Kosempo and Silam) and 1 male paralectotype (from Kankau or Koshun).

Additional material.

1 ♀ (ZJUH), "[China:] Zhejiang, West Mt. Tianmu, 30.V.1998"; 1 ♂ (ZJUH), "[China:] Zhejiang, Songyang, XI.1986, Han-lin Chen"; 1 ♀ (ZJUH), "[China:] Fujian, Fuzhou, 2.X.1983, Nai-quan Lin"; 1 ♂ (ZJUH), " [China:] Fujian, Fuzhou, 13.VIII.1989, Chang-ming Liu"; 1 ♂ (ZJUH), "[China:] Fujian, Fuzhou, 3.X.1990, Nai-quan Lin"; 1 ♀ (ZJUH), "[China:] Fujian, Fuzhou, Jinshan, 23.VI.1986, Jing-zhang Zhao"; 1 ♂ (ZJUH), "[China:] Fujian, Fuzhou, 9.VI.1988, Xiu-fu Zhao"; 1 ♀ (ZJUH), "[China:] Fujian, Fuzhou, Jinshan, 19-26.IV.1990, Xiu-fu Zhao"; 1 ♀ (ZJUH), "[China:] Fujian, Fuzhou, 31.X.1954, H. F. Chao [= Xiu-fu Zhao] Coll"; 1 ♂ (ZJUH), "[China:] Fujian, Nanjing, 28.VII.1988, Xiao-lin Lin"; 1 ♀ (NMNS) "[China:] Taiwan, Taitung, Taiyuan, 21.VII.2000, M.L. Chan"; 1 ♂ (id.), "[China:] Taiwan, Paling, 18.VII.1980, B. S. Chang"; 1 ♀ (TARI), "[China:] Taiwan, Musha, 25.VI-5.VII.1947, Maa, Chen & Lin"; 1 ♀ (TARI), "[China:] Formosa [= Taiwan], Suo, 19.VII.1938"; 1 ♀ (TARI), "[China:] Taiwan, KAGI, 16.IV.1967, S. Toyota"; 1 ♂ (TARI), [China:]?Taiwan, Takezaki, 3.V.1931, T. Shiraki"; 1 ♀ (TARI), "[China:] Taiwan, Suisha, 21.I.1927, J. Sonan"; 1 ♂ (TARI), [China:] Taiwan, Funkiko, Arisan, 10.VII.1937, J. Sonan"; 1 ♀ (TARI), "[China:] Taiwan, Koshun, IV.1918, T. Shiraki"; 1 ♂ (TARI), "[China:] Formosa [= Taiwan], Koshun, 25.IV.-25.V.1918, J. Sonan, K. Miyake, M. Yoshino"; 1 ♀ (SCAU), "[China:] Guangdong, Nanling Nature Reserve, 16.X.2007, Zai-fu Xu"; 1 ♂ (ZJUH), "[China:] Guangxi, Tianlin, Qingping, 30.V.1982, Jun-hua He"; 1 ♀ (ZJUH), "[China:] Hainan, Baisha, Mt. Yinggeling, 1-2.V.2008, Jing-xian Liu"; 2 ♀ (SCAU), "[China:] Hunan, Mt. Huping, 11-13.VII.2009, Shi-hong Wang"; 1 ♀ (SCAU), "[China:] Hunan, Mt. Huping, Shinianzigou, 9.VII.2009, Ya-li Tang"; 9 ♀ (SCAU), "[China:] Guizhou, Mayang River, 2.X.2007, Cui-hong Xie"; 4 ♀ (SCAU), "[China:] Guizhou, Daheba, 27.IX.2007, Jie-min Yao"; 2 ♀ (ZJUH), "[China:] Guizhou, Suiyang, Kuankuoshui Nature Reserve, Qinggangtang, 8.VI.2010, Pu Tang"; 1 ♀ (ZJUH), "[China:] Guizhou, Tianzhu, VIII.2009, Yang-wen Wang".

Diagnosis.

White apical part of ovipositor sheath (Fig. 86) about 2.8-3.5 times as long as hind basitarsus; ovipositor sheath about 1.0-1.1 times as long as body and 1.5-1.8 times as long as metasoma; head directly narrowed in dorsal view (Figs 84, 92); vertex with satin sheen and very finely and sparsely punctulate and in front of occipital carina with shallow triangular depression medio-posteriorly (Figs 84, 92); occipital carina wide and lamelliform medio-dorsally (Figs 79, 87), and distinctly protruding ventro-posteriorly (Figs 79, 87); third antennal segment of ♀ 1.6-1.8 times as long as second segment; frons very finely punctulate, with satin sheen; vertex slightly convex medio-posteriorly and with deep cleft in front of occipital carina in lateral view (Figs 79, 84); propleuron moderately slender and 1.0-1.2 times as long as mesoscutum in front of tegulae (Figs 80, 88); antesternal carina narrow; head in anterior view not protruding below lower level of eyes and mandibular condylus near lower level of eyes (Figs 83, 91); in lateral viewcondylarincision of malar space very close to eye (Figs 79, 87); eyes glabrous; fourth and fifth antennal segment of ♀ 1.3-1.4 (♂ 1.9-2.3) and ♀ 1.1-1.3 (♂ 1.8-2.1) times as long as third segment, respectively (Fig. 94); apical antennal segment of ♀ 1.2 times as long as third antennal segment and its colour similar to colour of medial segments; antenna of female dark brown; mesoscutum with satin sheen and coriaceous with spaced medium-sized crater-like punctures and with coarse transverse rugae medio-posteriorly (Figs 81, 89); lateral lobe of mes oscutum mainly coriaceous, laterally transversely rugulose and with few superficial punctures in lateral view (Figs 81, 89); hind coxa transversely rugose dorsally, mainly coriaceous; hind tibia weakly swollen, resulting in a slightly convex ventral border (Figs 82, 90), with a distinct subbasal ivory patch; apical half of hind basitarsus white (Figs 82, 90); hind tibial spurs dark brown; apical 0.55 of hypopygium incised; head, mesosoma laterally and scape black.

Description.

Lectotype, female, body length 16.7 mm.

Head. Vertex and frons with satin sheen and very finely densely punctulate; vertex slightly convex in lateral view (Fig. 79), medio-posteriorly with shallow triangular depression and with deep cleft in front of occipital carina (Fig. 84); head directly narrowed behind eyes, subconical (Fig. 84); temple 0.7 times as long as eye in dorsal view; fourth antennal segment 1.4 times as long as third segment and nearly as long as second and third segments combined, fifth antennal segment 1.3 times as long as third segment, third antennal segment 1.8 times as long as second segment; occipital carina wide and lamelliform medio-dorsally (Fig. 79); OOL 1.3 times as long as diameter of posterior ocellus; face rather wide (Fig. 83); malar space partly absent because mandibular condyles reaching eye (Fig. 79); clypeus without depression, its lateral corners not protruding forwards and medio-ventrally slightly emarginate; eye glabrous.

Mesosoma. Length of mesosoma twice its height; pronotal side moderately low and ventrally reticulate, but posteriorly largely smooth (Fig. 80), with a small antero-lateral tooth; mesoscutum hardly protruding anteriorly; propleuron comparatively slender, 1.1 times as long as mesoscutum in front of tegulae; antesternal carina narrow and narrowly lamelliform; mesoscutum densely coriaceous and with mostly spaced small to medium-sized and crater-like punctures (Fig. 81) and with satin sheen, medio-posteriorly with coarse transverse rugae (Fig. 81); scutellum superficially coriaceous.

Wings. Fore wing: first discal cell parallel-sided and with outer posterior corner hardly angulate (Fig. 85; cf. ♂ Fig. 93); vein SR1 distinctly bent.

Legs. Hind coxa with satin sheen, moderately slender, coriaceous and dorsally largely transversely rugose; length of hind femur, tibia and basitarsus 4.4, 4.9 and 6.4 times their width, respectively; hind tibia weakly swollen, resulting in a slightly convex ventral border (Fig. 82); middle tarsus 1.3 times as long as middle tibia; middle femur subparallel-sided and slightly slenderer than fore femur.

Metasoma. Ovipositor sheath 1.1 times as long as body, 1.7 times as long as metasoma, 3.5 times as long as hind tibia and tarsus combined and 5.6 times as long as hind tibia; white apical part 3.0 times as long as hind basitarsus and 0.17 times total length of sheath; apical 0.55 of hypopygium slit-shaped incised.

Colour. Black or black-brown; mandible, tegulae and legs largely dark brown, but fore and middle tibiae basally, fore basitarsus, basal 0.6 of middle basitarsus, large subbasal patch of hind tibia and apical 0.6 of hind basitarsus ivory; apical sixth of ovipositor sheath widely white; pterostigma dark brown; wing membrane slightly infuscate (less than in male).

Male. Paralectotype: head behind eyes more gradually narrowed in dorsal view than in female and shiny (Fig. 92); occipital carina wide lamelliform medio-dorsally (Fig. 87) and medio-posterior depression obsolescent (Fig. 92); face rather narrow (Fig. 91); third antennal segment 1.4 times as long as second segment (Fig. 94); fourth segment 2.3 times as long as third segment, 1.3 times as long as second and third segments combined and fifth segment 2.1 times third segment; propleuron rather slender and 1.1 times as long as mesoscutum in front of tegulae (Fig. 88); hind leg coloured as in female but only basal half of fore basitarsus, basal third of middle tarsus ivory and hind basitarsus dark brown (Fig. 90); genitalia missing; body length 16 mm, of fore wing 6.7 mm. Very similar to lectotype.

Variation. Chinese specimens: Female: body length 13.0-20.0 mm, of fore wing 6.7-9.0 mm. Ovipositor sheath 1.0-1.1 times as long as body, 1.5-1.8 times as long as metasoma, 5.2-5.7 times as long as hind tibia; its apical ivory or white part 2.8-3.5 times as long as hind basitarsus; temple 0.6-0.7 times as long as eye in dorsal view; third antennal segment 1.6-1.8 times as long as second segment, fourth antennal segment 1.3-1.4 times as long as third segment, fifth antennal segment 1.1-1.2 times as long as third segment; length of mesosoma 1.9-2.2 times as long as its height; propleuron 1.0-1.2 times as long as mesoscutum in front of tegulae; propodeum reticulate-rugose or reticulate. Male: body length 12.5-17.0 mm, of fore wing 6.0-7.2 mm; temple 0.5-0.6 times as long as eye in dorsal view; third antennal segment 1.2 times as long as second segment, fourth antennal segment 1.9-2.1 times as long as third segment, fifth antennal segment 1.8-2.0 times as long as third segment; length of mesosoma 1.8 times as long as its height; propleuron 1.0-1.1 times as long as mesoscutum in front of tegulae.

Distribution.

Oriental China (Zhejiang, Fujian, Taiwan, Hunan, Guangdong, Guangxi, Hainan, Guizhou).

Biology.

Unknown. Collected in January, April–October.