Acanthocephala thomasi

A large coreid bug with leaf-like expansions on the hind tibiae characteristic of the family. The species can be distinguished from other Acanthocephala species by its large size and specific genitalic characters. Field identification requires examination of the pronotum shape and hind leg morphology.

Arid and semi-arid environments including desert scrub, grasslands, and canyon areas. Documented from sandstone glades, desert flats, and riparian zones in association with host plants.

Southwestern United States (Arizona, California, Texas) and Mexico. Records extend into Central America.

Adults have been observed from June through August in the southwestern United States, with peak activity during summer monsoon season.

Phytophagous. Documented feeding on sap from Baccharis sarothroides (desert broom). The common name suggests agave as a host, though this association requires verification.

• Baccharis sarothroides - food plantobserved feeding on sap flows

Adults have been observed feeding on sap flows on host plant stems. Strong fliers; individuals have been noted taking flight when approached for photography.

• Thasus neocalifornicusboth are large coreid bugs in southwestern desert habitats; Thasus has more heavily armed and thickened hind legs in males
• Acanthocephala terminaliscongeneric species with similar leaf-footed morphology; requires examination of pronotal and genitalic characters for separation

The common name 'giant agave bug' may imply exclusive or primary association with agave plants, which is not well-supported by available field observations. Documented records show utilization of Baccharis and other hosts.

• phytophagous
• sap-feeder
• desert
• southwestern US
• monsoon-active

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
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