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Abstract
Two male and 2 female forms of a new, dimorphic species of
Pyemotes from the scolytid
Phleosinus canadensis Swaine are described and life history notes are presented. Only one type of female was found to be phoretic. Normal and phoretomorphic females can produce both normal and phoretomorphic daughters. Two species groups in
Pyemotes, the
scolyti group and the
ventricosus group, are recognized and comparison of morphological and behavioral adaptations for phoresy are made. Crossing experiments involving several forms indicate the probable existence of several closely related species in the
ventricosus group, these often overlapping in their choice of hosts. A key to males of the genus and to the females of the
scolyti group is presented.
Citation
Cross, Earle A.; Moser, John C. 1975. A New, Dimorphic Species of
Pyemotes and a Key to Previously-Described Forms (Acarina: Tarsonemoidea). Annals of the Entomological Society of America 68(4): 723-732
