Teranishia crenulata, Chen, Hua-yan, van Achterberg, Cornelis, He, Jun-hua & Xu, Zai-fu, 2014

Chen, Hua-yan, van Achterberg, Cornelis, He, Jun-hua & Xu, Zai-fu, 2014, A revision of the Chinese Trigonalyidae (Hymenoptera, Trigonalyoidea), ZooKeys 385, pp. 1-207 : 130-133

Teranishia crenulata sp. n. Figs 593-603

Type material.

Holotype, ♀ (SCAU) "[China:] Ningxia, Mt. Liupan, 21. VI– 14.VII.2008, Jie-min Yao, 200808062". Paratypes: 1 ♂ (SCAU), same data, but 200808083; 1 ♂ (SCAU), "[China:] Ningxia, Mt. Liupan, Fengtai, 28.VI.2008, Jing-xian Liu, 200800605"; 1 ♂ (RMNH) "[China:] Ningxia, Mt. Liupan, Sutai, 26.VI.2008, Jing-xian Liu, 200800529"; 1 ♂ (ZJUH) "[China:] Gansu, Dangchang, Daheba, 2539 m, 31.VII.2004, Qiong Wu, 20047026"; 1 ♂ (ZJUH) "[China:] Sichuan, Pingwu, Baimazhai, 25.VII.2006, Hong-ying Zhang, 200611109"; 1 ♂ (SCAU) "[China:] Sichuan, Wanglang National Nature Reserve, 2500 m, 25.VII.2006, sweeping, Zhuang Lu, SCAU 356".

Diagnosis.

Antenna with a small ivory band subapically (Fig. 596); occipital carina strongly developed and finely crenulate dorsally (Fig. 595); frons densely punctate (Fig. 594), but sometimes reduced; scutellum densely rugose or rugulose (Fig. 599); mesosoma without pale pattern dorsally, mesoscutum black medially (Fig. 599); third submarginal cell 0.4-0.5 times as long as second submarginal cell; first tergite black, largely brownish-white or with a reddish-yellow lateral patch apically (Fig. 601).

Description.

Holotype, female, length of body 6.9 mm (of fore wing 5.2 mm).

Head. Antenna with 23 segments; frons densely and finely punctate; vertex sparsely and finely punctate and becoming smooth posteriorly (Fig. 595); temple largely smooth with sparse fine punctures; head subparallel-sided behind eyes, eye in dorsal view 0.9 times as long as temple (Fig. 595); occipital carina strongly developed and finely crenulate dorsally (Fig. 595); supra-antennal elevations strongly enlarged (about 0.7 times as long as scapus), outer side subvertical and largely smooth except for sparse punctures (Fig. 595); clypeus slightly concave and thick medio-ventrally.

Mesosoma. Length of mesosoma 1.6 times its height (Fig. 600); mesopleuron below transverse mesopleural groove coarsely rugose antero-dorsally, smooth ventrally and transversely striate postero-dorsally, above groove coarsely rugose anteriorly and smooth posteriorly; transverse mesopleural groove wide, deep and coarsely crenulate; notauli wide, deep and coarsely crenulate; mesoscutum densely punctate rugose, lateral lobe with a narrow smooth mid-longitudinal line (Fig. 599); scutellar sulcus wide, both medially and laterally and coarsely crenulate; scutellum densely rugose and anteriorly near level of scutellum (Fig. 599); metanotum medially protruding, obtuse and rugose (Fig. 599); propodeum irregularly areolate (Fig. 599); posterior propodeal carina thick lamelliform and slightly arched, foramen medially 0.5 times higher than wide basally.

Wings. Fore wing: length of vein 1-M 2.4 times as long as vein 1-SR (Fig. 597).

Metasoma. First tergite 0.7 times as long as apically wide, smooth and without depression antero-medially (Fig. 601); other tergites and sternites smooth to superficially coriaceous and shiny (Figs 601, 603); third sternite about 0.7 times as long as second sternite (Fig. 603); hypopygium triangular in ventral view (Fig. 603).

Colour. Black; malar space brownish; postero-lateral margin of first tergite and sternite, second and third tergites and sternites largely reddish-yellow; palpi dark brown; mandible with large basal ivory spot, otherwise orange-brown to dark brown; antenna black with a small ivory band subapically; apex of fore femur, tibia and tarsus, ventral side of mid and hind tibiae yellowish brown, remainder of legs dark brown to black; pterostigma dark brown; wing membrane subhyaline.

Male. Length of body 6.2-10.2 mm, of fore wing 5.1-8.1 mm; antenna with 23 (2), 24 (2) or 25 (2) segments; frons densely and coarsely punctate; vertex densely and finely punctate; frons with ivory stripes along inner orbita; dorsal half of clypeus ivory; colour of metasoma similar to female or darker; genitalia extruded.

Biology.

Unknown. Collected in June–July.

Distribution.

China (Ningxia, Gansu, Sichuan).

Etymology.

Named after the finely crenulate occipital carina: from “crenulatus” (Latin for "minutely crenate or notched").