1 Body black entirely in both sexes; dorsum of head densely punctured, thorax and abdomen densely punctured and microsculptured, mat or almost so; mesoscutellar appendage (posttergite) with some large punctures and a distinct middle carina; third antennomere as long as following two antennomeres together; cercus short, about 2 times as long as broad; ovipositor sheath 1.5 times as long as front tibia; sheath tapering toward apex in dorsal view and about 2 times as broad as breadth of cercus (Fig. 2 j); lancet as Fig. 4 a, with about 27 serrulae, annular spines short and sparse, middle and apical segments as Figs 4 g, 4 d; harpes 1.0- 1.1 times as long as broad; penis valve as Figs 5 j–l................................................. C. nigrata
- Body black with red mesonotum in both sexes; dorsum of head impunctate or nearly so, mesonotum hardly punctured, without distinct microsculpture; posttergite flat and shiny, impunctate, without middle carina; abdominal tergites at least feebly shiny; third antennomere shorter or longer than following two antennomeres together; cercus slender, about 4 times as long as broad; ovipositor sheath 1.1–1.2 times as long as front tibia; sheath distinctly broadened toward apex in dorsal view and about 3.5–4 times as broad as breadth of cercus (Figs 2 k–l); lancet as Figs 4 b–c, with 15–17 serrulae, annular spines absent or long and very dense, middle and apical serrulae as Figs 4 h–i, 4 e–f; harpes about 1.9 –2.0 times as long as broad; penis valve as Figs 5 m– r................................................................................................... 2
2 Abdominal tergites strongly shiny, without distinct microsculpture (Fig. 3 i); antenna about 0.8 times as long as head and thorax together, third antennomere 1.2 times as long as following two antennomeres together, 7 th and 8 th antennomeres about 1.3 times as long as broad (Fig. 3 f); setae on sheath as Fig. 2 k; lancet as Fig. 4 b, middle and apical segments as Figs 4 h, 4 e; penis valve as Figs 5 m–o.............................................................................. C. rufidorsata
- Abdominal tergites distinct microsculptured, feebly shiny (Fig. 3 j); antenna as long as head and thorax together, third antennomere about 0.9 times as long as following two antennomeres together; 7 th and 8 th antennomeres about 2.3 times as long as broad (Fig. 3 g); setae on sheath as Fig. 2 l; lancet as Fig. 4 c, middle and apical segments as Figs 4 i, 4 f; penis valve as Figs 5 p–r.................................................................................................. C. zhongi