Dipteropeltis longicaudatus sp. nov.

Etymology. Species name longicaudatus means “long-tailed” in Latin. The gender is masculine.

Type material. Type specimens and vouchers were deposited in the Helminthological Collection of the Museum of Natural History at the San Marcos University (MUSM) in Lima, Peru: holotype MUSM 5128 (adult specimen I.2); paratypes MUSM 5129 (adult specimen I.3) and MUSM 5130 (juvenile specimen II.5).

Type locality. Tahuayo River, Maynas, Loreto, Peru (-4.394542, -73.264189) .

Type host. Triportheus albus .