Bombus (Cullumanobombus) griseocollis (De Geer)

Tripodi, Amber D. & Szalanski, Allen L., 2015, The bumble bees (Hymenoptera: Apidae: Bombus) of Arkansas, fifty years later, Journal of Melittology 2015 (50), pp. 1-17 : 12

Bombus (Cullumanobombus) griseocollis (De Geer)

‘Brown-belted Bumble Bee’

Bombus griseocollis is a widely distributed species in both eastern and western North America ( Koch et al., 2012; Williams et al., 2014). Within Arkansas, the occurrence of B. griseocollis has greatly increased between the historic (36%) and contemporary periods (56%, Fig. 3). Two specimens in UAAM were captured in the period between the sampling periods in this study: Johnson Co., July, 1978 and Cleburne Co., April 19, 1969.

GLOSSA LENGTH: Short (4.91 ± 0.50 mm).

ADULT ACTIVE PERIOD: Early season with a short active period (60 days). Majority: early June through early August; Earliest: April 18; Latest: October 15.

PREFERRED PLANTS: Cephalanthus occidentalis (common buttonbush, Rubiaceae ), P. tenuifolium (narrowleaf mountainmint, Lamiaceae ), T. canadense ( Canada german- der, Lamiaceae ), L. pycnostachya (prairie blazing star, Asteraceae ), C. nutans (nodding plumeless thistle, Asteraceae ), Asclepias hirtella (Pennell) Woodson (green milkweed, Apocynaceae ), A. viridis Walter (green antelopehorn, Apocynaceae ), V. villosa (winter vetch, Fabaceae ), Centaurea stoebe Lam. (spotted knapweed, Asteraceae ), M. fistulosa (wild bergamot, Lamiaceae ), S. integrifolium (wholeleaf rosinweed, Asteraceae ).