Allocapnia maria Hanson, 1942

Allocapnia maria Hanson, 1942 View in CoL

Notes

Allocapnia maria is commonly known as the Two-knobbed snowfly ( Stark et al. 2012). This species has been reported from eastern Canada and south to Virginia ( Ross and Ricker 1971, DeWalt et al. 2024). Ross and Ricker (1971) reported this species from several locations near Ithaca and in the Catskill Mountains (their Fig. 99) yet without precise locality data. Hanson (1960) was the first to report hybridization of this species with A. minima when species are sympatric. Additionally, Ross and Ricker (1971) noted that this species also hybridizes with A. pechumani further north in New Brunswick (their fig. 99). In New York, adults of this species are active from early March through mid-April (Fig. 7 View Figure 7 ) and reported from numerous lowland localities with a distribution that extends to the north along the low valleys surrounding the Adirondack Mountains (Fig. 10 f View Figure 10 f ; Myers et al. 2011). This species is probably more common in the southern and western portions of the state than collections have indicated.