S. Mahunka szerk.: Folia Entomologica Hungarica 63. (Budapest, 2002)

designation). Also, "Thecla danaus" was briefly annotated and figured by d'Abrera (1995: 1128-1129) who selected specimens from Venezuela and Peru from material curated as Thecla danaus in The Natural History Museum, London (BMNH). He mentioned the probable relationship of an undescribed eumaeine lycaenid to danaus (d'Abrera 1995: 1130-1131). In light of these additional species, the original combination, and all of the subsequent placements of the species danaus, now appear erroneous from a phylogenetic point of view since none of the combinations reflect monophyly. I have studied the BMNH material and discovered that two female phenotypes are represented in their samples, having different wingshape, ventral pattern, and genital structures. The larger phenotype is identical with P. danaus, whilst the other one is smaller and represents a hitherto undescribed species whose male also differs from "Th. margariiaced'' in the shape of dorsal wing androconial cluster. The smaller phenotype was also represented in the König material I received as a loan for study from the Naturhistorisches Museum, Wien (NHW). According to the ranges of specimen data, the two taxa occur in Ecuador. These entities also appear to be monophyletic with the undescribed species mentioned by d'Abrera, forming a cluster of species most of which have been hitherto unnamed. The present paper thus has the following aims: 1) describing a new genus with type species Pseudolycaena danaus Felder et Felder, 1865 ; 2) restricting the name Pseudolycaena danaus via Lectotype designation for the larger phenotype among these entities; 3) describing the smaller phenotype as a distinct species; 4) describing a taxon for the entity represented by a single female specimen and 5) discussing the systematic position of these taxa within the genus and among the Eumaeini. SYSTEMATICS Margaritheclus gen. n. Type species - Pseudolycaena danaus Felder et Felder, 1865 Diagnosis - The three known members of the genus represent a unique cluster of taxa in the tribe, sharing the combination of the following features: large size, lobate hind wing inner margin and ventral pattern resembling species of Micandra Schatz, 1888 (type species: Pseudolycaena platyptera Felder et Felder, 1865, by monotypy) but without subbasal series of gleaming intercellular lines. In morphology they resemble Gibbossa Salazar, 2001 and related genera but males have a conspicuous projection directed from the anal-lateral surface of the valva and a large, heavily sclerotized, pouch-like posterior lamella in the female associated with a long tubular ductus.