A Novel New Neotropical Nanocladius (Diptera: Chironomidae), Symphoretic on Traverella (Ephemeroptera: Leptophlebiidae)

Abstract

The pupa and larva of Nanocladius (Plecopteracoluthus) bubrachiatus sp. nov. (Diptera: Chironomidae) are described from Honduras. This species lives in symphoretic association with the leptophlebiid mayfly Traverella sp. This is the first record of a Nanocladius living in symphoretic association with a mayfly. The larva is unusual in that it possesses a premento-hypopharyngeal fulcrum with long dorsocaudally directed arms. A key is included for the immature stages of Nanocladius (Plecopteracoluthus).