Tribes and genera of New Zealand Carabidae - Key to Trechini genera

Source: FNZ 60, 62
Elytra with 2 discal setiferous punctures in stria 3, and one in stria 2.
Mandibles bidentate (with 2 teeth), without a premolar between the molar and retinaculum.
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IMAGE [400 W x 225 H pix]

Elytra with 3 discal setiferous punctures in stria 3, none in stria 2.
Mandibles tridentate (with 3 teeth), with a premolar between the molar and retinaculum.
..... NEXT
IMAGE [400 W x 225 H pix]