Haplocauda aculeata is a species of beetle of the family Lampyridae. It is found in Brazil (Amazonas).
Etymology Aculeata is a Latin adjective meaning sting-bearing and refers to the prominent median projection of sternum VIII on the male abdomen.Four New Species of Haplocauda, with Notes on the Evolutionary Convergence of Copulation Clamps in Lucidotini (Coleoptera: Lampyridae: Lampyrinae)
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