Key to the species of the C. diazi species-group

1. Females............................................................................................. 2

-. Males (males of C. diazi, C. lapacensis and C. lopezrichinii are unknown)........................................ 6

2(1). Head, mesosoma and metasoma entirely black with white cream marks (Figs 1A, 3).................................................................................................... C. albovittata Bordera & Palacio sp. nov.

-. Mesosoma with extensive reddish areas (Figs 1 B–E, 2B–E).................................................... 3

3 (2). Submetapleural carina absent (Fig. 2E). Ocular orbits entirely white cream (Figs 7 A–D). Clypeal suture straight (Fig. 7C)....................................................................... C. speculata Bordera & Palacio sp. nov.

-. Submetapleural carina present at least on anterior 0.4 (Figs 2 B–D). Genal orbit widely black (Figs 4A, 4B, 5A, 5B, 6B). Clypeal suture more or less curved (Figs 4C, 5C, 6A)............................................................... 4

4(3). Propodeum entirely black (Figs 6C, 6E). Hind leg with coxa brown, femur brown with a yellow apical spot. Genal orbit without a triangular white mark at ventral third. Ovipositor and ovipositor sheath about 1.5× and 1.4× as long as hind tibia respectively (Fig. 6G). Metapleuron about 1.8× as long as high (Fig. 6C, 6E).......................... C. lopezrichinii (Blanchard)

-. Propodeum dorsally black, laterally white (Figs 4D, 5A). Hind leg with coxa and femur black, widely white coloured. Genal orbit with a triangular white mark at ventral third (Figs 4A, 5A). Ovipositor and ovipositor sheath about 2.1× and 1.75× as long as hind tibia respectively (Figs 4F, 5F). Metapleuron 2.23–2.46× as long as high (Figs 4D, 5A)........................ 5

5(4). Submetapleural carina well defined and complete, strongly arched inwards posteriorly (Fig. 2C). Tergite I and II about 1.75× and 1.2× as long as wide respectively (Fig. 5E). Lateral part of pronotum reddish, dorsally and ventrally yellow-banded (Fig. 5A)................................................................ C. lapacensis Bordera & Palacio sp. nov.

-. Submetapleural carina present in a little less than its basal half (Fig. 2B). Tergite I and II about 1.3× and 0.9× as long as wide respectively (Fig. 4E). Lateral part of pronotum black, only dorsally yellow-banded (Fig. 4A).............. C. diazi Porter

6(1). Lower part of gena deeply concave (Figs 9A, 9C, arrows). Head, mesosoma and metasoma entirely black and white (Figs 8A, 9).................................................................. C. albovittata Bordera & Palacio sp. nov.

-. Lower part of gena not concave (Figs 10A, 10C, arrows). Body with reddish or orange areas (Figs 8B, 10)..... C. speculata Bordera & Palacio sp. nov.