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Tribe Eucerini - Long-horned Bees

Possible Willow Mining Bee - Melissodes - male Apidae  - Xenoglossa strenua - male Squash Bee - Peponapis pruinosa long-horned bee,Fe - Svastra obliqua - female Fierce looking bee - Svastra atripes yellow-brown bee - Melissodes Bee - Melissodes trinodis Small black bee with yellow nose and legs - Melissodes bimaculatus - male
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon (Aculeata - Ants, Bees 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)

The clypeus protrudes notably. (2)


No stiff hairs beside the margin of the inner eye, distinguishing them from Exomalopsini. (2)

The top of the head is flattish or slightly concave, distinguishing them from Emphorini. This gives them an appearance of bulging eyes. (2)

shows the inner eye and top of head well.
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.
Print References
LaBerge, W. E. 1956a. A revision of the bees of the genus Melissodes in North and Central America. Part I(Hymenoptera, Apidae). University of Kansas Science Bulletin 37 (pt. 2, no. 18): 911-1194.
LaBerge, W. E. 1956b. A revision of the bees of the genus Melissodes in North and Central America. Part II (Hymenoptera, Apidae). University of Kansas Science Bulletin 38 (pt. 1, no. 8): 533-578.
LaBerge, W. E. 1957. The genera of bees of the tribe Eucerini in North and Central America (Hymenoptera, Apoidea). American Museum Novitates, No. 1837, Amer. Mus. of Nat. Hist., NY, 44 pp. (Full Text)
LaBerge, W. E. 1958. Notes on the North and Central American bees of the genus Svastra Holmberg (Hymenoptera: Apidae). Journal of the Kansas Entomological Society 31 (4): 266-273.
LaBerge, W. E. 1961. A revision of the bees of the genus Melissodes in North and Central America. Part III (Hymenoptera, Apidae). University of Kansas Science Bulletin 42 (5): 283-663.
LaBerge, W.E. 2001. Revision of the bees of the genus Tetraloniella in the New World (Hymenoptera: Apidae). Illinois Natural History Survey Bulletin 36 (3): 64-162.
Timberlake, P. H. 1969. A contribution to the systematics of North American species of Synhalonia (Hymenoptera, Apoidea). University of California Publications in Entomology 57: 1-76.