Species		    Queen   Worker  Flight			Parasite

Bombus barbutellus  18-20mm	    Mid-April - Mid-September	hortorum
Bombus bohemicus    14-20mm	    Mid-March - Mid-September	lucorum
Bombus campestris   18-20mm	    April - Early-October	pascuorum
Bombus hortorum	    18-23mm	    March - September
Bombus jonellus	    16mm       12mm Early Spring
Bombus lapidarius   20-22mm 12-16mm Mid-March - Mid-October
Bombus lucorum	    19-22mm 13-16mm Mid-March - Mid-October
Bombus pascuorum    15-18mm  9-15mm Mid-April - Mid-October
Bombus pratorum	    15-17mm  9-14mm March - October
Bombus ruderarius   17mm       15mm April - September
Bombus ruderatus    22-24mm    16mm Mid-April - Mid-September
Bombus rupestris    20-25mm	    Mid-April - Mid-September	lapidarius
Bombus subterraneus 20mm	    June - Early-September
Bombus sylvarum	    16-18mm 10-15mm March - Mid-October
Bombus sylvestris   15-18mm	    March - Mid-October		jonellus, pratorum
Bombus terrestris   22-28mm 11-17mm End-February - October
Bombus vestalis	    15-22mm	    End-March - Mid-September	terrestris


Bombus hypnorum	    18-22mm	    Mid-February - Early-October