Large Sallow Mining Bee 
Large Yellow Flower Wasp 
Large-headed Armoured-Resin Bee 
Larger Empty Oak Apple Wasp 
Larra anathema 
Lasioglossum calceatum 
Lasioglossum discum 
Lasioglossum eremaean 
Lasioglossum pseudosphecodimorphum 
Lasioglossum urbanum 
Lasius alienus 
Lasius brevicornis 
Lasius nearcticus 
Leathery Sweat Bee 
Lemon Ant 
Lemon Cuckoo-Bumble Bee 
Leptocybe invasa 
Leptomyrmex erythrocephalus 
Leptomyrmex rufipes 
Leptomyrmex wiburdi 
Lesser banded hornet 
Lesser Paper Wasp 
Lestiphorus bicinctus 
Leucospis affinis