Revista Brasileira de Entomologia Revista Brasileira de Entomologia
Rev Bras Entomol 2017;61:318-22 - Vol. 61 Num.4 DOI: 10.1016/j.rbe.2017.09.001
Systematics, Morphology and Biogeography
The first gynandromorph of a zorapteran and potential thelytokous parthenogenesis in a population of Zorotypus brasiliensis Silvestri (Zoraptera: Zorotypidae)
José Albertino Rafaela,, , Dayse Willkenia Almeida Marquesb, Michael S. Engelc,d
a Instituto Nacional de Pesquisas da Amazônia (INPA), Coordenação de Biodiversidade, Manaus, AM, Brazil
b Instituto Nacional de Pesquisas da Amazônia (INPA), Divisão do Curso de Pós-Graduação em Entomologia, Manaus, AM, Brazil
c University of Kansas, Department of Ecology and Evolutionary Biology, Lawrence, United States
d American Museum of Natural History, Division of Entomology, New York, United States
Received 04 July 2017, Accepted 14 September 2017
Abstract

The first gynandromorph of the insect order Zoraptera is reported. A gynandromorph of Zorotypus brasiliensis Silvestri is described from a likely parthenogenetic population in the Atlantic Forest around the border of the Brazilian states of Minas Gerais, Rio de Janeiro, and São Paulo. As has been previously surmised for this species, the sample consisted of only females, tending to support the hypothesis of thelytokous parthenogenesis for this population. The gynandromorph is largely female in outward appearance, but exhibits male secondary sexual traits on the left side of the apical abdominal segments. The left (male) antenna consists of antennomeres of different proportions to those of the right (female) antenna. The internal genitalia and associated sclerites, however, are female although some are augmented in their form relative to normal-type females. Comments are made on possible factors resulting in the development of the gynandromorph. This is the 16th insect order with gynandromorphism reported.

Keywords
Angel insects, Brazil, Gynandromorphism, Soil-lice, Telythoky
Rev Bras Entomol 2017;61:318-22 - Vol. 61 Num.4 DOI: 10.1016/j.rbe.2017.09.001