Bombus (Pyrobombus) perplexus Cresson 1863

Bombus (Pyrobombus) perplexus Cresson, 186: 391 (Connecticut holotype). Holotype. Male USA: Connecticut: E. Norton (lost?). Notes: The Connecticut type is evidently missing from the ANSP and presumed lost. It has been replaced with a neotype from Massachusetts deposited at USNM (http://n 2t.net/ark:/65665/3fd2779fe-c0c3-4156-9bcac7b6c761b6b9). This common species has been collected in many diverse habitats across Connecticut, such as urban parks and gardens, sandplain remnants, meadows, bogs, swamps, coastal scrub, powerline ROW, grassy fields, and forests, and has been collected from a wide range of host plants in Connecticut. The flight season of this species in Connecticut extends later than reported in Williams et al. (2014), with 18 November the latest date for a B. perplexus queen in Connecticut (https://www.inaturalist.org/observations/101417680). Most records for this species in Connecticut (n = 592) are dated on or before 28 August, but beginning in 2001 this species has been observed on the wing in Connecticut in late September (n = 5) and October (n = 7), and, in 2021, in November (n = 4). It is unclear whether these late sightings are related to increased observations on iNaturalist or to effects of climate change.