Isodontia mexicana (Saussure) 1867. Isodontia
mexicana is a widespread North American species ranging into
Central America (Krombein 1979) that is relatively common in the LP
of Michigan. Only a few records are known from the UP.
BIOLOGY: This species is similar to I. auripes in its nesting behavior, but differs in that it often provides loose partitions between brood cells containing a single larva with prey. Often a single large brood chamber may contain bits of grass spread loosely throughout it (Medler 1965, Lin 1966, Krombein 1967, pers. obs.). Several species of Oecanthus are the preferred prey, but it is also known to take Gryllus and other genera (Krombein 1979). Not only does I. mexicana nest in cavities in wood, but it has been reported to nest in pitcher plant leaves in the southeast (Hubbard 1896, Rau 1935c). Two generations per year occur in the SLP.
FLOWER RECORDS: Daucus carota, Eryngium yuccafolium, Melilotus alba, Pastinaca sativa, Rhus glabra, and Rudbeckia hirta.
COLLECTION DATES: 200 specimens, 17 June to 12 October, with most dates in July and August.
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