Description of a new genus of Euliina with unique coupling adaptations of the male and female (Lepidoptera: Tortricidae: Tortricinae: Cochylini)

Abstract

Ancoruncus langeri, new genus and new species, is described and illustrated from the Neotropics (Bolivia). It is assigned to the tribe Cochylini (subtribe Euliina) in the family Tortricidae. Ancoruncus langeri is characterized by an unusual, strongly developed uncus, distally expanded into an anchor-like, bilobed apical process and a complex gnathos in male genitalia, as well as an unusual configuration of the anterior lobes of the papillae anales, and tergum 8 with the anterior area bearing a double pocket in the female genitalia. The hypothetical dorsal coupling mechanism of the male and female genitalia is discussed.

A taxonomic revision of the Archipini of the Caribbean (Lepidoptera, Tortricidae, Tortricinae)

“…A putative autapomorphy for the family Tortricidae is the presence of flattened papillae anales, a feature modified in some plesiomorphic groups, presumably to facilitate oviposition (Horak 1999). To our knowledge, the hypothesized coupling method presented here for Claduncaria Razowski is only the third proposed sexual coupling mechanism for Tortricidae (Ferro and Akre 1975;Pérez Santa-Rita and Baixeras 2017), the second where interactions take place externally (Pérez Santa-Rita and Baixeras 2017), and the first which describes interspecific differences.…”

“…Precise coupling mechanisms in Tortricidae are even more poorly known, having only been investigated or hypothesized in a few instances (Ferro and Akre 1975;Pérez Santa-Rita and Baixeras 2017), despite recent interest in more generalized functional morphology (Lincago et al 2013;Anzaldo et al 2014;Zlatkov 2016) and intraspecific variation (Mutaten et al 2007;Gilligan and Wenzel 2008;Rentel et al 2017).…”

First 3-D reconstruction of copulation in Lepidoptera: interaction of genitalia in Tortrix viridana (Tortricidae)

“…Observing genital interaction during copulation is a difficult task. Researchers have applied various techniques, from the comparison of cuticular preparations or artificial pairing [ 7 , 37 , 48 ] to elaborate dissections and histological sections (above cited references). Perhaps the most accurate results can be achieved by the so called “serial morphology” proposed by Callahan [ 4 ] and based on dissection of subsequent stages.…”

Two new species of Brusqeulia Razowski & Becker, 2000 from the Neotropics, with comments on the systematic position of the genus in relation to the Apolychrosis Amsel, 1962 group of genera (Lepidoptera, Tortricidae, Cochylini)

“…str., but leaves Euliini as a paraphyletic taxon. Cochylini has nomenclatorial priority but for practical reasons, it has been recommended that the two hypothetical subtribes Euliina and Cochylina be retained (Gilligan et al 2014, Gilligan and Brown 2016, Pérez Santa-Rita and Baixeras 2017). We follow that convention in this paper.…”

“…The presence of one or more large non-deciduous, laterobasally attached, aciculate, capitate cornuti with a microdenticulate vesica is also evidence of the relationship between the two subtribes (Anzaldo et al 2014). Extreme morphological variation, especially in the genitalia, contributes to the difficulty of defining Cochylini (Pérez Santa-Rita and Baixeras 2017) and makes it difficult to establish boundaries between the taxa. In fact, more than half of the genera of the subtribe Euliina are monotypic, mostly from the Neotropics.…”