Apinocis planiusculus

Distinguishing A. planiusculus from congeners requires examination of genitalic structures and detailed morphological characters not summarized in general references. The genus Apinocis is small and taxonomically challenging; species-level identification typically requires specialist examination. No field identification characters have been published for this species.

As a member of Curculionidae, possesses the family-characteristic elongated snout (rostrum) with mouthparts at the tip. Body form typical of small weevils: compact, with hardened forewings (elytra) covering the abdomen. Specific coloration, size, and distinguishing morphological features for A. planiusculus are not documented in available sources.

Habitat associations for A. planiusculus specifically are undocumented. Related Apinocis species occur in grassland and agricultural environments where host grasses are present.

Distribution records are limited. The species has been observed in Texas, USA based on iNaturalist records. Broader range is not established in published literature.

Seasonal activity patterns are not documented for this species.

No direct economic or agricultural significance has been documented for A. planiusculus. The congeneric species Apinocis deplanatus (sugarcane rootstock weevil) is a sporadic pest of sorghum, but A. planiusculus has not been implicated in crop damage.

• Apinocis deplanatusSame genus; A. deplanatus is larger (about 3 mm), dark brown to black, and a documented pest of sorghum with distinctive larval tunneling behavior. A. planiusculus has not been associated with crop damage.
• Other small CurculionidaeNumerous small weevil species share general body plan; identification to genus requires examination of rostral and antennal characters, and to species requires genitalic dissection.

• BugGuide
• iNaturalist taxon
• Stalk-boring insect pests - AgriLife Extension Entomology
• Insects that feed on developing grain in the head - AgriLife Extension Entomology