Chrysis subdistincta Linsenmaier, 1968

Rosa, Paolo, Wei, Na-sen & Xu, Zai-fu, 2017, One new species and three new records of Chrysis Linnaeus from China (Hymenoptera, Chrysididae), ZooKeys 669, pp. 65-88 : 67

Chrysis subdistincta Linsenmaier, 1968 Fig. 11

Chrysis (Chrysis) subdistincta Linsenmaier, 1968: 110. Holotype ♀; Turkmenistan (Transcaspia) (NMLS) (examined).

Chrysis subdistincta : Kimsey and Bohart 1991: 467 (cerastes species-group).

Type material.

Holotype, ♀, [TURKMENISTAN] Transcaspia Imam-baba W.Koshantschikoff // ♀ Type Chrysis L. subdistincta Lins. Linsenmaier det. 66 (NMLS). Additional material: 1♀, CHINA, Gansu, Jiuquan, Huangnibao, 1700 m, 15.VII.2010, leg. Xu-feng Zhang & Feng-li Cui, No. 34020575 (SHEM); 1♀, CHINA, Gansu, Jiuquan, Huangnibao, 1700 m, 16.VII.2010, leg. Xu-feng Zhang & Feng-li Cui, No. 34020062 (SHEM).

Diagnosis.

Chrysis subdistincta belongs to the Palaearctic C. annulata sub-group and is the only known Chinese species of the maculicornis species-group. It can be recognised by apex of T3 with median pair of apical teeth longer than lateral pair (all the apical teeth are of similar length in other species), and pit row with large, fused pits (usually small, widely separated in other species).

Description.

Female (Fig. 11A). Body length 6.5 mm.

Head. Scapal basin deep and micro-punctate (Fig. 11B), TFC well-developed, inverted U-shaped, with long branches in contact with eyes. Relative length of P:F1:F2:F3 = 1.0:1.2:1.0:1.0. OOL = 1.3 MOD; POL = 1.9 MOD; MS = 0.2 MOD; subantennal space 0.5 MOD. Anterior margin of clypeus broadly emarginate. Genal carina developed throughout its length.

Mesosoma. Pronotum medially narrowed, 0.8 times as long as mesoscutellum; pronotal groove faint. Pronotum, mesoscutum and mesoscutellum with large foveate punctures; interspaces micropunctate. Notauli with large subquadrate foveae. Mesopleuron with deep and scrobiculate episternal and scrobal sulci (Fig. 11D).

Metasoma. Metasoma with deep, large round punctures (Fig. 11E). PD on T2 decreasing towards posterior margin. T2 and T3 with weak median ridge. T3 pit row slightly transversely bulging before pit row; pit row with large, laterally fused pits; apex of T3 with four pointed teeth, apically hyaline, with median pair of teeth longer than lateral pair (Fig. 11F).

Colouration. Head and mesosoma blue, with metallic green on TFC, vertex, pronotum and mesoscutum dorso-laterally, and mesoscutellum medially. Metasoma golden to metallic reddish, with metallic blue on T3 from pit row to apical teeth.

Male. Unknown.

Distribution.

China (new record). Turkmenistan ( Linsenmaier 1968).

Remarks.

Kimsey and Bohart (1991) followed Linsenmaier (1968) and placed Chrysis subdistincta into the cerastes species-group. Nevertheless, this species is closely related to C. annulata du Buysson from which it is recognizable by the elongate teeth on T3. C. annulata and related species have been included in the maculicornis species-group by Kimsey and Bohart (1991). Therefore, we consequently include C. subdistincta in this species-group.