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THE SEMIAQUATIC GENUS TEGEOCRANELLUS (ACARI: ORIBATIDA: AMERONOTHROIDEA) OF NORTH AND CENTRAL AMERICA

Published online by Cambridge University Press:  31 May 2012

Valerie M. Behan-Pelletier
Affiliation:
Research Branch, Agriculture and Agri-Food Canada, K.W. Neatby Building, Ottawa, Ontario, Canada K1A 0C6

Abstract

Species of the oribatid mite genus Tegeocranellus from North and Central America are discussed, and immatures are described for the first time. Six new species are described and keyed: Tegeocranellus alas from Costa Rica, T. barbarae from Alabama, Mississippi, and Florida, T. kethleyi from Alabama and Mississippi, T. mississippii from Louisiana and Texas, T. muscorum known from Ontario to Florida, and T. mediolamellatus from Guatemala. Descriptions of T. alas, T. barbarae, T. mediolamellatus, and T. muscorum are based on adults and immatures, and those of the other two species on adults only. I expand the generic diagnosis to include information on the apheredermous, plicate immatures, and present a character analysis hypothesizing that the monogeneric family Tegeocranellidae is a member of the Ameronothroidea, closely related to Selenoribatidae and Fortuyniidae.

Résumé

On trouvera ici une étude des oribates du genre Tegeocranellus d’Amérique du Nord et d’Amérique centrale, ainsi qu’une description inédite de stades immatures. Six nouvelles espèces sont décrites : Tegeocranellus alas du Costa Rica, T. barbarae de l’Alabama, du Mississippi et de la Floride, T. kethleyi de l’Alabama et du Mississippi, T. mississippii de la Louisiane et du Texas, T. muscorum répandu de l’Ontario à la Floride et T. mediolamellatus du Guatémala. Une clé d’identification permettra de reconnaître les espèces. Les descriptions de T. alas, T. barbarae, T. mediolamellatus et de T. muscorum sont basées sur l’examen des adultes et des stades immatures, alors que, dans le cas des deux autres espèces, seuls des adultes ont été examinés. La diagnose générique comporte des informations sur les stades immatures aphérédermes, plissés, et l’analyse des caractères suppose que la famille monogénérique des Tegeocranellidae appartient aux Ameronothroidea, étroitement apparentés aux Selenoribatidae et aux Fortuyniidae.

[Traduit par la Rédaction]

Type
Articles
Copyright
Copyright © Entomological Society of Canada 1997

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