Eur. J. Entomol. 99 (1): 99-109, 2002 | DOI: 10.14411/eje.2002.017

Nymphal and adult cephalic chaetotaxy of the Cydnidae (Hemiptera: Heteroptera), and its adaptive, taxonomic and phylogenetic significance

Jerzy A. LIS1, Dominique PLUOT-SIGWALT2
1 Department of Biosystematics, Division of Zoology, University of Opole, Oleska 22, PL-45-052 Opole, Poland; e-mail:cydnus@uni.opole.pl
2 Laboratoire de Biologie et Évolution des Insectes, École pratique des Hautes Études et Muséum National d'Histoire Naturelle, 45 rue Buffon, F-75005 Paris, France; e-mail: dps@mnhn.fr

Cephalic chaetotaxy of nymphal and adult stages of species from all the subfamilies of Cydnidae s. str. (sensu Froeschner, 1960 and Lis, 1994), namely Garsauriinae, Cephalocteinae, Cydninae, Sehirinae, and Amnestinae, was studied. Two types of setae, primary and secondary, are described, and changes they undergo during ontogeny reviewed. The adaptive, taxonomic and phylogenetic significance of the cephalic setae in the Cydnidae s. str. is discussed. A ground-plan of the original cephalic chaetotaxy of the family, and its evolution within the family Cydnidae s. str. are proposed.

Keywords: Hemiptera, Heteroptera, Cydnidae, morphology, cephalic chaetotaxy, primary setae, secondary setae, adults, nymphs, ontogenesis

Received: April 10, 2001; Accepted: December 7, 2001; Published: March 15, 2002

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