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- Publisher
- Taylor & Francis
- Copyright
- © 1982 Société entomologique de France
- ISSN
- 2168-6351
- eISSN
- 0037-9271
- DOI
- 10.1080/21686351.1982.12278328
- Publisher site
- See Article on Publisher Site
Abstract
Summary The genus Mexicallis, gen. n. lives on Quercus. It is mainly characterized by its very small size and the persistance of larval characters by apterous viviparous females (the only known form): antenna consisting of 4 or 5 segments, first tarsal joint with 2 or 3 hairs, pleural setae lacking, marginal hairs and often spinal hairs transformed into long spines with their surface more or less spiculated; in the subgenus Anacallis, exists a pair of long frontal processuses and duckbill like marginal processuses. The following species and subspecies are described: M. (M.) spinifer and ssp. longicaudus, M. (M.) analiliae and ssp. pumilus, M. (M.) calous and M. (A.) areolatus, spp. n. A key is given for these species. The surprisingly contrasted morphological variations between the 8 populations of M. analiliae studied here, represent a new challange of the neo-darwinian theory.
Journal
Annales de la Société entomologique de France (N S ) – Taylor & Francis
Published: Jul 31, 1982
Keywords: Homoptera; Aphididae; Mexicallis; gen. nov.; Anacallis; sub. gen. nov. et espèces nouvelles; Mexique