Crocidema

Members of Crocidema can be recognized as broad-nosed weevils (subfamily Entiminae) by their short, broad rostrum with elbowed antennae inserted near its base rather than near the tip. The genus is distinguished from other Byrsopagini by the combination of its western North American distribution and specific morphological characters established by Van Dyke in his original descriptions. Species-level identification requires examination of subtle differences in body form, punctation, and coloration described in Van Dyke's 1934 and 1951 works.

Species occur in arid and semi-arid regions of the southwestern United States. Specific microhabitat preferences for most species are poorly documented, though the genus is associated with desert and chaparral environments of Arizona and California.

Restricted to western North America. Documented from Arizona (C. arizonica) and California (C. californica, C. attenuata, C. attenullta, C. nigrior, C. planifrons).

As herbivorous weevils, species likely function as primary consumers feeding on plant material, though specific ecological roles are undocumented.

No documented economic or agricultural significance. The genus is of interest primarily to entomologists studying western North American weevil diversity.

• Other Entiminae generaBroad-nosed weevils share the characteristic short, broad rostrum with geniculate antennae. Crocidema is distinguished by its western North American distribution and tribal placement in Byrsopagini.
• NaupactusAnother broad-nosed weevil genus with some species in western North America, but Naupactus belongs to a different tribe (Naupactini) and typically has different body proportions and leg structure.

• weevil
• broad-nosed weevil
• western North America
• desert fauna
• Curculionidae
• Entiminae
• Byrsopagini

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• Catalogue of Life