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SYSTEMATICS Bulldog Ants of the Eocene Okanagan Highlands and History of the
 

Summary: SYSTEMATICS
Bulldog Ants of the Eocene Okanagan Highlands and History of the
Subfamily (Hymenoptera: Formicidae: Myrmeciinae)
S. BRUCE ARCHIBALD, STEFAN P. COVER, AND CORRIE S. MOREAU
Department of Organismic and Evolutionary Biology, Harvard University, Museum of Comparative Zoology,
26 Oxford Street, Cambridge, MA 02138
Ann. Entomol. Soc. Am. 99(3): 487đ523 (2006)
ABSTRACT The presence of the ant subfamily Myrmeciinae is established in the Early Eocene
(Ypresian) Okanagan Highlands localities of Horse▀y River, Falkland, McAbee (British Columbia,
Canada) and Republic (Washington state, United States) and in the Mo-clay ělst and Fur Formations
(Denmark). Nine new species in four new genera (three orthotaxa: Ypresiomyrma n. gen., Avito-
myrmex n. gen., and Macabeemyrma n. gen.; one parataxon: Myrmeciites n. gen.) are described. Seven
are placed in the Myrmeciinae: Ypresiomyrma orbiculata n. sp., Ypresiomyrma bartletti n. sp., Avito-
myrmex elongatus n. sp., Avitomyrmex mastax n. sp., Avitomyrmex systenus n. sp., Macabeemyrma ovata
n. sp., and Myrmeciites herculeanus n. sp.; two further species are tentatively placed in the subfamily,
Myrmeciites (?) tabanifluviensis n. sp. from Horse▀y River, and Myrmeciites (?) goliath n. sp. from
McAbee. Two further myrmeciine ants are treated as Myrmeciites incertae sedis, a male from Falkland
and a female (worker or queen) from Republic. Pachycondyla rebekkae Rust and Andersen, from the
earliest Ypresian of Denmark, is reassigned to the genus Ypresiomyrma, within the Myrmeciinae. The
fossil record indicates a northern hemisphere origin of the subfamily. The presence of Ypresiomyrma

  

Source: Archibald, S. Bruce - Department of Biological Sciences, Simon Fraser University

 

Collections: Biology and Medicine