Melitara dentata

Wingspan 32–50 mm. Distinguished from related cactus-feeding pyralids by specific host associations and geographic range. Adults are nocturnal and attracted to ultraviolet light.

Associated with Opuntia cactus species in arid and semi-arid regions of western North America.

Native to western North America: widespread from Alberta and Saskatchewan (Canada) through the western United States to southern Arizona and central Texas. Introduced and established in Hawaii.

One generation per year; adult activity period not explicitly documented but likely corresponds to regional cactus flowering and growing seasons.

Larvae feed internally on Opuntia cactus species, including Opuntia fragilis, Opuntia macrorhiza, Opuntia phaeacantha, and Opuntia polyacantha.

• Opuntia fragilis - larval hostnew host record
• Opuntia macrorhiza - larval host
• Opuntia phaeacantha - larval host
• Opuntia polyacantha - larval host

One generation per year. Larvae feed within cactus tissues. Pupation occurs within silk cases constructed by larvae.

Larvae are internal feeders on cactus stems and pads. Adults are nocturnal and attracted to ultraviolet light sources.

Specialized herbivore of Opuntia cacti; contributes to cactus population dynamics and may serve as prey for parasitoids and other natural enemies.

Potential biological control agent for invasive Opuntia species; introduced to Hawaii, possibly for cactus control purposes.

• Melitara prodenialisAlso feeds on Opuntia; distinguished by distribution and specific host associations
• Cactoblastis cactorumAnother cactus-feeding pyralid, but in subfamily Phycitinae; introduced for biological control of Opuntia

• cactus borer
• biological control
• Opuntia specialist
• univoltine
• internal feeder

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
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• Berry Go Round #21 | Beetles In The Bush
• Miridae | Beetles In The Bush
• New Host Record for the Blue Cactus Borer (Melitara dentata Grote)