Gasteruption terebrelligerum 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 : 81-84

Gasteruption terebrelligerum Enderlein, 1913 Figs 273285

Gasteruption terebrelligerum Enderlein, 1913: 324; Hedicke 1939: 28; Pasteels 1958: 189.

Type material.

Holotype of Gasteruption terebrelligerum , ♀ (DEI), "[China:] Formosa [= Taiwan], Hoozan, 1910, H. Sauter", “7.IX.”, “Holotypus”, " Gasteruption terebrelligerum Enderl., ♀, Type, Dr. Enderlein, det. 1913", "Dtsch. Entomol. Institut Berlin".

Additional material.

Numerous specimens fromChina (Fujian, Mt. Wuyi, 1000 m (CSCS); Shanxi, Gamquan, Qingquanyou (CSCS); 1 ♀ + 3 ♂, Hubei, Huangmei (SCAU); Hunan, Shimen (CSCS); Yunnan, Baoshan, Xianyangqu, Lujiang (CSCS)).

Diagnosis.

Apex of ovipositor sheath dark brown; ovipositor sheath about 1.5 times as long as hind tibia and about 0.9 times as long as hind tibia and tarsus combined; occipital carina obsolescent medio-dorsally (Figs 273, 281) and slightly protruding ventro-posteriorly (Figs 273, 281); antesternal carina narrow; head, laterally mesosoma and scape black; head in anterior view slightly protruding below lower level of eyes by less than basal width of mandible and mandibular condylus near lower level of eyes (Figs 277, 283); in lateral viewcondylarincision of malar space close to eye (Figs 273, 281); clypeus with small depression or depression obsolescent; eyes setose; fourth and fifth antennal segment 1.1-1.2 and 1.0 (♀) -1.3 (♂) times as long as third segment, respectively (Figs 280, 285); apical antennal segment 1.2-1.4 times as long as third antennal segment and its colour similar to colour of medial segments; antenna of female may be partly or largely yellow-brown apically; mesoscutum and head dissimilarly sculptured, head very finely sculptured and matt, mesoscutum densely rugulose and more or less matt (Figs 275, 282); propleuron robust and 0.7-0.9 times as long as mesoscutum in front of tegulae (Fig. 274); hind coxa often transversely rugose or rugulose dorsally; hind tibia robust, as long as hind femur and trochanter combined, with a distinct subbasal ivory patch and swollen, resulting in a distinctly convex ventral border (Figs 276, 284); hind basitarsus comparatively long and parallel-sided (Figs 276, 284); hind tibial spurs dark brown or yellow-brown; hind tarsus dark brown; apical seventh of hypopygium incised.

Description.

Described after a female from Hubei (Huangmei), body length 9.0 mm, of fore wing 4.5 mm.

Head. Head directly narrowed behind eyes and weakly curved laterally (Fig. 278); temple 0.6 times as long as eye in dorsal view; vertex and frons matt and with finely aciculate; vertex rounded posteriorly and without depression medio - posteriorly; occipital carina narrow and non-lamelliform medio-dorsally (Fig. 273); third antennal segment 1.9 times as long as second segment, fourth antennal segment 1.2 times as long as third segment, fifth antennal segment as long as third segment (Fig. 280); eye shortly setose; OOL as long as diameter of posterior ocellus; minimum width of malar space 0.3 times as long as second antennal segment; clypeus without depression.

Mesosoma. Length of mesosoma twice as long as its height; propleuron robust, 0.7 times as long as mesoscutum in front of tegulae (Fig. 274), anterior of propleuron rather finely rugulose, posteriorly coriaceous and matt; side of pronotum mainly coriaceous, with a few rugulae; mesoscutum matt and coriaceous, medio-posteriorly with a few fine rugae (Fig. 275); scutellum coriaceous; propodeum rugose, medio-longitudinal carina distinct.

Wings. Fore wing: first discal cell subtriangular, m-cu rather short (Fig. 279).

Legs. Hind coxa moderately slender and dorsally rather finely rugulose; length of hind femur, tibia and basitarsus 4.3, 4.0 and 5.3 times their width, respectively (Fig. 276); hind tibia 2.0 mm.

Metasoma. Ovipositor sheath 0.2-0.3 times as long as body, 0.4-0.5 times as long as metasoma, about 0.9 times as long as hind tibia and tarsus combined and 1.5 times as long as hind tibia; hypopygium v-shaped incised apically.

Colour. Black; antenna dark brown; legs dark brown, but ventral patch of hind tibia ivory; ventral of metasoma dark brown; ovipositor sheath entire black.

Male. Body length 11.5 mm; temple 0.6 times as long as eye in dorsal view (Fig. 281); third antennal segment 1.5 times as long as second segment, fourth antennal segment 1.5 times as long as third segment, fifth antennal segment 1.3 times as long as third segment (Fig. 285); OOL as long as diameter of posterior ocellus; minimum width of malar space 0.2 times as long as second antennal segment; length of mesosoma twice its height; propleuron 0.8 times as long as mesoscutum in front of tegulae; side of pronotum mainly rather finely rugulose or rugose; mesoscutum matt and with finely strigate, medio-posteriorly rugose (Fig. 282); 2-CU1 vein of fore wing sinuate; length of hind femur, tibia and basitarsus 4.7, 3.9 and 4.8 times their width, respectively (Fig. 284); middle tarsus 1.2 times as long as middle tibia; dorsal subbasal patch of fore and middle tibiae and ventral subbasal patch of hind tibia ivory.

Variation. Female: body length 8-14 mm; temple 0.6-0.7 times as long as eye in dorsal view. Male: body length 8-11 mm, very similar to female.

Distribution.

China (Shanxi, Fujian, Taiwan, Hubei, Hunan, Yunnan).

Biology.

Unknown. Collected in May–July and September.

Notes.

Very similar to Gasteruption brevicuspis Kieffer, 1911, from India (Assam), but Gasteruption brevicuspis has the length of the mesosoma about 1.6 times its height, the head slightly slenderer in dorsal view, the ovipositor sheath 0.9 times as long as hind tibia and 0.6 times as long as hind tibia and tarsus combined and the mesoscutum somewhat stronger sculptured. The first discal cell of fore wing is comparatively narrow in the holotype of Gasteruption terebrelligerum (Fig. 348), but this is a rather variable character; it varies even among series of other species collected at the same day and locality.