on a warm day that is followed by cold or rainy weather in spring. The remnant colony, after having produced one or more swarms, is usually well provisioned
Anchors for the Cosmic Distance Scale: the Cepheid QZ Normae in the OpenCluster NGC 6067. Astrophysics and Space Science. 2013-08, 347 (1): 61–70. Bibcode:2013Ap&SS