Pachymerina

Distinguished from other bruchine subtribes by features of the male genitalia and larval morphology. Members generally exhibit the robust body form typical of Pachymerini, with shortened elytra that may expose the pygidium. Specific diagnostic characters require examination of internal structures.

Associated with legume host plants, particularly in tropical and subtropical regions where their host plants occur.

Tropical and subtropical regions; distribution corresponds to that of legume host plants utilized by constituent species.

Larval stages develop within seeds of legumes (Fabaceae). Adults do not feed on seeds; feeding habits of adults are poorly documented.

• Fabaceae - larval hostlarval development occurs within seeds

Complete metamorphosis with egg, larval, pupal, and adult stages. Larvae are endospermophagous, developing entirely within individual seeds. Pupation occurs within the seed cavity.

Adults are known to oviposit on developing legume pods or seeds. Larvae burrow directly into seeds upon hatching.

Seed predators of legumes; population levels can impact seed viability and plant recruitment in natural systems.

Some constituent species are agricultural pests of stored legumes, though Pachymerina as a subtribe has less economic impact than some other bruchine groups.

• BruchinaAnother subtribe within Bruchinae; distinguished by different male genitalic structure and larval morphology
• AcanthoscelidinaSubtribe within Bruchinae; differs in host associations and morphological details of antennae and genitalia

• seed beetle
• legume pest
• Bruchinae
• Pachymerini

• BugGuide
• GBIF taxonomy match
• Catalogue of Life