READING PUBLIC MUSEUM AND ART GALLERY

Introduction xv
79. Front distinctly narrowed between eye, parallel below eyes; eye with lower
lobe subequal in height to gena, being slightly higher or slightly shorter;
metatibiae strongly expanded in male ................ Charoides (p. 55)
Front parallel-sided between eyes, and narrowed below eyes; eye with lower
lobe only two-thirds genal height; meso- and meta tibiae expanded in male
Delilah (p. 53)
NOTE: Lydipta (po 100) could not be placed in the above key because of the lack,
in the original description, of many of the more pertinent characters.
KEy TO GENERA AND SPEcms WHICH OCCUR NORTH OF :MEXICO
1. Eye nearly divided, upper and lower lobes connected only by a fine line of
ocelli ......... .......... ..... . .. . . ............... Tancanw: truquii
Eye with upper and lower lobes connected by several rows of ocelli ........ 2
2. Pronotum narrower at apex than at base .. .. . ... ... ... . ... (Lochmaeocles) 3
Pronotum narrower at base than at apex ...... ... ... ...... .. . (Oncideres) 4
3. Prosternum with a distinct transverse carina or elevated process between
procoxae .. ........... . ...... ............. .. L. carnuticeps cornuticeps
Prosternum without a carina or proccs.:; .... .. ...... .... .... . L. marmoratus
4. Elytra without granules on base; antennae densely setase on proximal segments
O. quercus
Elytra granulate basally; antennae not densely setose ..................... 5
5. Elytra with shining glabrous maculae ........... ......... ..... 0. pustuiatus
Elytra without glabrous maculae ............................... . .... 6
6. Pronotal disk with three glabrous black maculae, lateral tubercles prominent;
elytral granules densely placed and coarse; integument color black or
PICeoUS . . . • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • . • • • • • 0. rlwdQsticta
Pronotal disk with at most a median glabrous (not black) macula, lateral
tubercles small or wanting; elytra with granules fine and sparser; integument
color brown . .... .. . .. ... . ............. 0. cingulatas