Endophagous-feeder
Guides
Acanthoscelides macrophthalmus
leucaena bruchine beetle, leucaena seed beetle
Acanthoscelides macrophthalmus is a seed-feeding beetle in the subfamily Bruchinae, native to the Neotropics and now widely distributed through human-mediated dispersal. The species is a specialist seed predator of Leucaena species, particularly the invasive weed Leucaena leucocephala, and has been introduced as a biological control agent in multiple regions. Adults are small beetles that oviposit on or near host seeds; larvae develop endophagously within seeds, passing through four distinct instars before emerging by cutting a circular exit window.