Bald-faced hornet viable brood in the comb fragment. The physical nature of cues mediating natal comb recognition is unknown, though some researchers propose distinct cuticular hydrocarbon profiles allow wasps to recognize nest mates. "D. maculata" is characterized by low paternity, worker reproduction and queen-worker conflict. Divergent genetic interests between workers and their queen cause intra-nest struggle for control, which disrupts social organization. Because of haplodiploidy, workers are unable to mate. However, their unfertilized eggs become males. Workers and their queens are most related to their own sons. Natural selection will therefore favor those workers who produce their own sons rather than rearing
BSA Hornet In '67 the color was changed to a darker red 'Cherokee Red' and was the last production year for the Hornet. The BSA Spitfire Hornet was a true racing motorcycle, with the A65 engine upgraded with high compression pistons and a performance cam. The gear ratios were altered for sprint acceleration and the brakes (the 8 inch model from the BSA Gold Star) were improved with special cooling fins. The BSA Spitfire Hornet was popular in the US, but was not marketed in the UK. (The name 'Spitfire' was later used for the top-selling BSA Spitfire road bike). For 1966