Biosystematics and Morphology of Symphyta. I. Stem-Galling Euura1 of the California Region, and a New Female Genitalic Nomenclature2
| Autor: | Edward Laidlaw Smith |
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| Rok vydání: | 1968 |
| Předmět: | |
| Zdroj: | Annals of the Entomological Society of America. 61:1389-1407 |
| ISSN: | 1938-2901 0013-8746 |
| DOI: | 10.1093/aesa/61.6.1389 |
| Popis: | The sawfly genera Phyllocolpa, Pontania, and Euura incite galls on Salicaceae by injecting colleterial fluid into the plant meristem during oviposition. The Phyllocolpa make open galls by deforming leaf margins of Populus and Salix, and are not host species-specific. Each species of Pontania makes a distinctive closed leaf gall on a particular species or within a certain species group of willow. Species of Euura subgenus Gemmura make closed bud galls on related species of Salix, and the host species-specific subgenus Euura make closed petiole or stem galls on individual species of willow. Stem-galling Euura may form sibling arrays within related species groups of Salix, and 3 new sibling species (Euura lasiolepis , E. lemmoniae , E. scoulerianae ) are described here. Descriptions of 3 other new sitm-Euura (E. breweriae , E. exiguae , E. geyerianae ) and a new subgenus of Euura ( GEMMURA ) are also included. A diagnosis of the genus Euura and its subgenera, a key distinguishing the gall-making genera of the Euura group from one another and from other genera of specialized Nematini, and keys to the adults and galls of the stem-galling Euura of the California region are presented. The morphology of the female ovipositor (gonapophyses) reflects the physical structure and ecology of the host plant and the site galled, as well as the phylogeny of the insect, and can be used to delineate both willow and sawfly taxa. Genitalic structure and function of taxonomic significance are described in a revised terminology applicable to many female Symphyta. |
| Databáze: | OpenAIRE |
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