DNA Barcode of symbiotic chironomids: Findings in the genus Symbiocladius (Diptera: Chironomidae).

Chironomidae of symbiotic habits have been recorded in different parts of the world, among commensals and parasites. There are different genera reported at the moment, however questions such as the origin of commensal or parasitic life, which occurred first or what are their benefits remain debatable. In order to contribute with information to elucidate the above mentioned issues, the present study reports the finding of immature stages of Symbiocladius (Acletus) wygodzinskyi Roback, 1965 in the Churup stream located in the Andes Cordillera (Peru), living on nymphs of Leptophlebiidae (Ephemeroptera).

Who is Andesiops peruvianus (Ulmer, 1920) (Ephemeroptera: Baetidae)? New insight from the type basin using morphological and molecular analyses.

Andesiops peruvianus (Ulmer, 1920) is a small minnow mayfly with a distribution throughout the Andes Mountains, mainly in lotic environments. In recent years, the taxonomic status of the species has been shifting, even finding out molecular and morphological evidence to consider it as a cryptic species. In this work, we collected seven specimens of A.

The imago of Baetodes traverae Mayo, 1972 (Ephemeroptera: Baetidae), with a redescription of the nymph.

Male imago of Baetodes traverae is described and its nymph is redescribed. The male imago is distinguished from the other known species of the genus by (1) abdominal tubercles absent, (2) turbinate eyes moderately large and not contiguous apically, (3) segment II of forceps without constriction, (4) coxal gills absent, and (5) abdominal tubercles absent. Baetodes traverae nymph is redescribed, with new illustrations aiming to improve the original description done by Mayo (1972).