BOMB US JONELLUS 167 



6. BOMBUS JONELLUS, Kirby. 

 Heath Humble-bee. 



Synonym : scrimshiranus, Kirby. 



Queen. Small; length 15-17 mm., expanse 27- 

 32 mm. 



The colouring is very like that of hortorum. 



Face black, top of the head more or less yellow. 

 Thorax black, with a yellow band in front and another 

 behind. Abdomen black with the first segment, and 

 generally the base of the second segment yellow, and 

 with the fourth and following segments white, rarely 

 cream-coloured, the white often beginning on the edge of 

 the third segment. Hairs of the corbicula usually reddish : 

 in hortorum they are entirely,- or almost entirely, black. 



Head short, the length of the cheeks being not more than 

 a third of that of the eyes. By this character this species 

 may be easily distinguished from hortorum and ruderatus. 



Worker. Length 10-14 mm. 

 Resembles the queen except in size. 



Male. Length 12-14 mm., expanse 24-27 mm. 



Coloured like the queen, but the face is yellow and the 

 black on the abdomen often extends on to the base of 

 the fourth segment. 



Easily distinguishable from hortorum by its short head, 

 the length of the cheeks, as in the queen, being not more 

 than a third 'of that of the eyes. It is also a smaller, 

 less elongate insect than the male of hortorum, and the 

 antennae are decidedly shorter than in Jwrtorum, the length 

 of the flagellum being only 5 mm. 



Armature like that of pratorum and lapponicus. 



B. jonellus is a local species, but commoner and 

 more widely distributed in the north and west than 

 in the south and east. It is rare in East Kent and 



