Holomorphology and Systematics of the Stonefly Genus Isogenoides (Plecoptera: Perlodidae)
Sandberg JB and Stewart KW. 2005. Holomorphology and Systematics of the Stonefly Genus Isogenoides (Plecoptera: Perlodidae). Transactions of the American Entomological Society. 131(3/4):269-345
ABSTRACT: Prior to this study, the stonefly genus Isogenoides Klap?lek contained nine species distributed throughout North America, north of Mexico. Despite this small number of species, Isogenoides has remained a problematic genus because of the lack of detailed comparative studies of genitalic, egg and nymph characters. This revision of Isogenoides has involved all known university, museum and individual holdings, and new collections by colleagues and us over a four year period from type localities and other sites to rear males and females of all species. Rearing provided nymph correlation for comparative descriptions and fresh males for aedeagal extrusion. The in situ genitalia of males, and details of the aedeagus, epiproct, lateral stylets, hemitergal processes and other structures were computer-illustrated and photographed using scanning electron microscopy. Holomorphological examination of all life stages has resulted in new com parative descriptions, keys, and synonymy of Isogenoides krumholzi (Ricker 1944) with I. doratus (Frison 1942). Recently collected nymphs can be identified pri marily by subtle differences in pigment patterns and with combinations of other finite characters.
- Type
- Journal Article
- Authors
- Sandberg, J; Stewart, K
- Units
- DINO , GRSM , ZION
- Keywords
- APHN, Appalachian Highlands Network, biodiversity, Great Smoky Mountains National Park, GRSM, GRSM-01644, Insecta, Isogenoides hansoni, Isogenoides zionensis, Perlodidae, Plecoptera, SER, Southeast Region, stoneflies, taxonomy