Acmaeodera opuntiae

Adults are very small for the genus Acmaeodera, with elytral vittae that appear more broken and linearly spotted rather than forming continuous stripes. This pattern distinguishes them from other Acmaeodera species with more typical vittate elytral markings. The species name 'opuntiae' refers to the prickly pear cactus genus Opuntia, though the actual host association appears to be with Tiquilia canescens.

Collected in dry, open habitats in western Texas, specifically in mesquite-acacia fence line areas with low-growing flowering vegetation. The type of habitat suggests adaptation to arid or semi-arid environments with sparse woody cover.

Known from western Texas (Val Verde County) and likely adjacent areas of northern Mexico. The species has been recorded from the Chihuahuan Desert region near the Pecos River drainage.

Adults have been observed in late May, suggesting spring activity that coincides with flowering of host plants.

• Tiquilia canescens - adult feeding siteAdults collected from flowers; low-growing habit makes sweeping ineffective, requiring careful visual inspection and aspiration

Adults are flower visitors that have been observed dropping from flowers when disturbed, suggesting a 'drop and play dead' defense response. Their small size and low-growing host plant make them difficult to detect and capture, requiring crouched inspection of individual flowering plants.

• Acmaeodera starraeSimilar small size and flower-visiting behavior on cactus and desert flowers; distinguished by elytral pattern and specific host associations
• Acmaeodera neoneglectaCommonly sympatric on flowers in western Texas; A. opuntiae distinguished by more broken, spotted vittae versus more continuous markings

• flower visitor
• desert
• Chihuahuan Desert
• rarely collected

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• GBIF taxonomy match
• iNaturalist taxon
• Catalogue of Life
• 2022 Six-State Insect Collecting Trip iReport | Beetles In The Bush