Title:	Abdominal macrochaetae of female Hylesia oratex Dyar, 1913 (Insecta: Lepidoptera: Saturniidae): external morphology and medical significance.
Authors:	BRITO, R. SPECHT, A. FILHO, W. S. A. FRONZA, E. MIELKE, C. G. C.
Affiliation:	ROSÂNGELA BRITO, UNIVERSIDADE FEDERAL DO PARANÁ ALEXANDRE SPECHT, CPAC WILSON S. A. FILHO, UNIVERSIDADE DE CAXIAS DO SUL EDEGAR FRONZA, UNIVERSIDADE DE CAXIAS DO SUL CARLOS G.C. MIELKE.
Date Issued:	2015
Citation:	Anais da Academia Brasileira de Ciências, v. 87, n. 3, p. 1763-1770, 2015.
Description:	The representatives of the genus Hylesia Hübner, [1820] are significant among the medically important Lepidoptera. Adult females use abdominal setae to wrap and protect the eggs that remain for months in nature. These setae, in contact with human skin, may cause allergic reactions including swelling, itching and local erythema, known as lepidopterism. The morphology of the abdominal scales and setae from the female H. oratex Dyar, 1913 is herein described and aspects related to their medical significance are discussed. Portions of each abdominal segment were examined through a scanning electron microscope. Two types of scales without medical importance, and two types of setae with medical importance, classified as "true setae" and "modified setae" were found. The true setae, which are slightly fusiform and have radially arranged lateral projections, are responsible for the allergic reactions caused by skin penetration. The modified setae, which are larger, curved, with the median enlarged and serrated margins, can be responsible for the release of chemical substances. This information provides a better understanding of the structure of the urticating setae, which are responsible for lepidopterism outbreaks in humans, and contributes towards the identification of the moth species involved.
Thesagro:	Alergia Inseto
NAL Thesaurus:	Insect morphology Lepidoptera Allergenicity
Keywords:	Cerda abdominal Mariposa Reação alérgica
DOI:	https://doi.org/10.1590/0001-3765201520130141
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CPAC)