Butterflies (Lepidoptera) considered as threatened in Minas Gerais, Brazil

The twenty species of butterflies (diurnal Lepidoptera) considered as threatened in the Minas Gerais (by statute) are described and discussed in relation to distribution, appearance and known records.24125

Ferromagnetism without flat bands in thin armchair nanoribbons

Describing by a Hubbard type of model a thin armchair graphene ribbon in the armchair hexagon chain limit, one shows in exact terms, that even if the system does not have flat bands at all, at low concentration a mesoscopic sample can have ferromagnetic ground state, being metallic in the same time. The mechanism is connected to a common effect of correlations and confinement.Comment: 37 pages, 12 figures, in press at Eur. Phys. Jour.

Sobre os tipos de Lepidoptera depositados em museus brasileiros: XXVI. Zygaenidae (suplemento) e Noctuidae descritos por A. M. da Costa Lima

<abstract language="eng">The holotype of Stylura brusiliensis Lima, 1928 was found at the Instituto Oswaldo Cruz. Rio de Janeiro. Brazil, and the holotype of Iscadia montei Lima, 1936 is probably lost

Saturniidae and Sphingidae (Lepidoptera, Bombycoidea) assemblage in Vossoroca, Tijucas do Sul, Paraná, Brazil

The richness and abundance of the assemblage of species in a community are a way to understand the patterns of diversity found around the world. This study describes the assemblages of Saturniidae and Sphingidae in an area of Montana Mixed Ombrophilous Forest, Tijucas do Sul, Paraná, Brazil, 880m, 25º50'8.93"S, 49º 02'55.20"W. Samples were collected between November 2010 and September 2011 during two nights at the twelve new moons periods with a light trap equipped with black light lamp (ultraviolet) of 46 watts between two mercury mixed-light lamps HWL 250 watts from 6:00 p.m to 06:00 a.m. The sampling effort totaled 288 hours. This sampling effort was responsible for the capture of 1235 specimens, distributed in 124 species: 858 specimens and 86 species of Saturniidae, and 377 specimens and 38 species of Sphingidae. It is noteworthy the sampling of 10 new species: one of Automerella Michener, 1949, two of Hylesia Hübner, [1820], one of Lonomia Walker, 1855 and six of Periga Walker, 1855, that will be described

Sobre os tipos de Lepidoptera depositados em museus brasileiros. XXV: Nymphalidae (Charaxinae) descrito por Mário Rosa (suplemento); Zygaenidae por A.M. da Costa Lima; Saturniidae (Hemileucinae) por A. Mabilde (suplemento), Castniidae por L. Pfeiffer e Arctiidae (Pericopinae) por Oscar Monte About the types of Lepidoptera depositated in brazilian museums. XXV: Nymphalidae (Charaxinae) described by Mario Rosa (supplement); Zygaenidae by A.M. da Costa Lima; Saturniidae (Hemileucinae) by A. Mabilde (supplement); Castniidae by L. Pfeiffer and Arctiidae (Pericopinae) by Oscar Monte

<abstract language="eng">A list of Nymphalidae (Charaxinae) described by Mário Rosa (supplement); Zygaenidae by A. M. da Costa Lima, Saturniidae (Hemileucinae) by A. Mabilde (supplement), Castniidae by L. Pfeiffer, and Arctiidae (Pericopinae) by O. Monte, with repositories of their types are presented. Lectotypes are designated for Dirphia glauca Mabilde, 1986 and Casínia pellonia catenigra Pfeiffer, 1917