Key to species of Tigrinestola

1. Elytra with abundant long and erect setae throughout. Mexico (Oaxaca)............................. T. nearnsi sp. nov.

- Elytra, at most, with sparse erect setae.....................................................................2

2(1). Elytra without erect setae or with some setae present on basal area; elytral punctures mostly obscured by the pubescence. USA (Arizona, New Mexico), Mexico (Baja California, Sonora).............................................. T. tigrina

- Elytra with sparse erect setae, usually throughout; elytral punctures mostly not obscured by the pubescence. Mexico (Chihua- hua, Durango, Mexico)........................................................................ .. T. howdeni