Submitted to: Entomologica Scandinavica
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: April 15, 1998
Publication Date: N/A
Interpretive Summary: The larvae of most tortricid moths feed on living plant material; the family includes some of the most economically important lepidopterous pests known. The tortricid trive Euliini, which is nearly restricted to the New World tropics, includes several important pests of grapes, citrus, kiwi fruit, apple, plum, peach, and others. This paper describes and illustrates a new genus of Euliini from Central and South America and presents a key to the species. This information will allow regulatory personnel in charge of insect identification to reliably determine species in this genus.
Technical Abstract: Dimorphopalpa, new genus, is described from Central and South America. Five species are recognized: D. albounctana new species, from Costa Rica and Venezuela (type species); D. striatana, new species, from Costa Rica and Venezuela; D. teutoniana, new species, from Brazil; D. stigmatoides, new species, from Brazil; and D. xestochalca (Meyrick), new combinaion, from Colombia. Putative autapomorphies for the new genus include the following: 1) sexually dimorphic labial palpi; those of the male are moderate while those of the female are exceedingly elongate; and 2) male genitalia with a unique, sclerotized, ventrally projecting process of the tegumen arising between the base of of the uncus and base of the gnathos. Dimorphopalpa appears to be most closely related of Uncicida Razowski, with which it shares similar projections from the gnathos and a pair of lateral, rounded structures distally on the caulis of the aedeagus.