Dufourea marginata (Cresson)

Gibbs, Jason, Dumesh, Sheila & Griswold, Terry L., 2014, Bees of the genera Dufourea and Dieunomia of Michigan (Hymenoptera: Apoidea: Halictidae), with a key to the Dufourea of eastern North America, Journal of Melittology 2014 (29), pp. 1-15 : 9

Dufourea marginata (Cresson)

( Figs. 19–21 )

Panurgus marginatus Cresson, 1878: 62 (♀).

Panurgus autumnalis Robertson, 1895: 121 (♀).

Dufourea (Halictoides) marginata (Cresson) : Mitchell, 1960: 516 (♀ ♂ redescription).

Dufourea (Halictoides) marginata marginata (Cresson) : Michener, 1951: 1132 (catalog); Hurd, 1979: 1936 (catalog); Moure & Hurd, 1987: 20 (catalog).

Dufourea marginata (Cresson) : Dumesh & Sheffield, 2012: 18 (♀ ♂ redescription [in part]).

There are no records of this species in Michigan. Dufourea marginata occurs in Illinois, Wisconsin, and Ontario ( Michener, 1951; Wolf & Ascher, 2009; Dumesh & Sheffield, 2012), and so could plausibly extend its range into both the southwest corner and the Upper Peninsula of Michigan. Dufourea marginata is a specialist on Helianthus L. ( Stephen et al., 1969; Hurd et al., 1980), but has also been collected on other Asteraceae , including Bidens aristosa (Michx.) Britton , Cirsium altissimum ( L.) Hill, Erigeron speciosus (Lindl.) DC. var. macranthus (Nutt.) Cronquist , Grindelia squarrosa (Pursh) Dunal , Oligoneuron rigidum ( L.) Small, and Rudbeckia hirta L. ( Stephen et al., 1969; Hurd, 1979; Hurd et al., 1980; Moure & Hurd, 1987). Dufourea marginata has also been recorded visiting Convolvulus L. ( Convolvulaceae ) for nectar.

Figures

Figures 16–21. Male Dufourea harveyi (Cockerell) (16–18) and D. marginata (Cresson) (19–21). 16, 19. Clypea. 17, 20. Inner metatibial spurs. 21, 22. Metasomal sterna five and six. Modified from Dumesh & Sheffield (2012).