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Tribe Eucerini - Long-horned bees

Eucera (Synhalonia) - Eucera - male Anthophora sp.? - Melissodes On squash blossom - Peponapis pruinosa bee 36 - Eucera Long-horned Bee - Melissodes bimaculata - female long horned bee - Eucera Bee Melissodes
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon (Aculeata - Bees, Ants, and Stinging Wasps)
No Taxon (Anthophila (Apoidea) - Bees)
Family Apidae (Cuckoo, Carpenter, Digger, Bumble, and Honey Bees)
Subfamily Apinae (Honey, Bumble, Long-horned, Orchid, and Digger Bees)
Tribe Eucerini (Long-horned bees)
Explanation of Names
see Eucera
Numbers
212 spp. in 14 genera in our area, ~750 spp. in 36 genera worldwide(1)
Identification
Hairy bees, typically with pale hair bands on the metasoma. Males typically have very long antennae. According to the site linked below, "two distinguishing characteristics are the following: the Eucerini have long paraglossae [lobes at the outer edges of the tip of the lower mouthparts] that reach the base of the labial palpus. They also have parocular carina [ridges on the outside portion of the eye area].
Key to genera in LaBerge (1957)
Range
holarctic and neotropical + ~40 Afrotropical spp. and just a couple in SE Asia(1)
Life Cycle
Nesting is in the ground for all species. Known nests are vertical burrows in flat ground.