Overview and Phylogenetic relationships of the Two-winged genera of South American Leptophlebiidae (Ephemeroptera).

DOMINGUEZ, EDUARDO

AQUATIC INSECTS

Taylor and Francis

Lugar: New York; Año: 2009 p. 63 - 71

0165-0424

Four genera of two-winged Atalophlebiinae have been described from continental South America: Askola, Hagenulopsis, Bessierus and Perissophlebioides. Of these, only Askola and Hagenulopsis are known from nymphs and adults; the others only from nymphs. A cladistic analysis was carried out to test the possible monophyly of these four genera, and to determine their relationships with the other South American genera known from nymphs and adults. Morphological data from both nymphs and adults were used for the analyses. Two different analyses were performed to check the stability of the cladogram. Results: 1) Askola is most closely related to Hagenulopsis; 2) Perissophlebioides is most closely related to Bessierus; 3) The two-winged genera do not constitute a monophyletic group; 4) Perissophlebioides and Bessierus belong to the Farrodes lineage, but the relationships of Hagenulopsis-Askola. in this study are still unclear.