Delphacidae, Leach, 1815

Thangam, S. Devi, Bourgoin, Thierry & Bartlett, Charles R., 2025, Delphacidae (Hemiptera: Delphacoidea) of the Indian sub-continent: annotated checklist with keys to subfamilies and tribes, Zootaxa 5653 (3), pp. 301-323 : 302

Key to the tribes of Delphacidae from the Indian sub-continent:

1. Hind-tibial spur spine-like, circular or quadrangular in cross-section............................................ 2

- Hind tibial spur flattened, neither circular not quadrangular in cross-section, variously shaped........................ 4

2. Hind tibial spur quadrangular in cross-section, without teeth on inner margin but with short bristles, antennae with pedicel slightly longer than scape ( Asiracinae ).................................................................... 3

- Hind tibial spur with conical teeth on inner margin, antennae elongate with pedicel twice length of scape ( Vizcayinae )................................................................................................. Vizcayini

3. Second segment of the hind tarsus with even row of 4 teeth; mesonotum with intermediate carina not straight but undulating throughout length.............................................................................. Ugyopini

- Second segment of the hind tarsus with marginal teeth longer than the teeth in middle; mesonotum with intermediate carinae straight................................................................................... Eodelphacini

4. Hind tibial spur triangular or flat, with or without teeth on hind margin; aedeagus entirely enclosed and often completely fused within phallobase (forming theca where phallobase and aedeagus are indistinguishable) ( Delphacinae )................. 5

- Hind tibial spur dilated with numerous small teeth with a rectangular plate-like base on hind margin; aedeagus with welldeveloped phallobase, usually bearing a ventroapical hook, aedeagus exceeding and freely movable within phallobase ( Stenocraninae )............................................................................. Stenocranini

5. Post-tibial spur without teeth on hind margin; aedeagus fused with phallobase but sometimes distinguishable; base of aedeagus closely approximated to anal tube........................................................... Tropidocephalini Post-tibial spur with teeth on hind margin; aedeagus entirely fused with phallobase; base of aedeagus separated from anal tube and connected by suspensorium................................................................. Delphacini