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| Thyreus | |
|---|---|
| |
| Thyreus nitidulus | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Apidae |
| Tribe: | Melectini |
| Genus: | Thyreus Panzer, 1806 |
| Type species | |
| Nomada scutellaris Fabricius, 1781
| |
| Synonyms | |
| |
Thyreus is an Old World genus of bees, one of many that are commonly known as cuckoo bees, or cloak-and-dagger bees, and are kleptoparasites of other species of bees, mostly in the genus Amegilla. They all have strongly contrasting patterns of coloration – three species from the Sydney region, Thyreus nitidulus, T. lugubris, and T. caeruleopunctatus are bright blue and black.