Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
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Discussion of 2018 gathering

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa

Photos from the 2010 Workshop in Grinnell, Iowa

Photos from the 2009 gathering in Washington

TaxonomyBrowseInfoImagesLinksBooksData

Subfamily Megachilinae

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 Megachilidae - Leafcutter, Mason, and Resin Bees, and allies
Subfamily Megachilinae

Tribe Anthidiini
Genus Anthidiellum - Rotund Resin Bees
Species ehrhorni - Ehrhorn's Rotund-Resin Bee
Species notatum - Northern Rotund-Resin Bee
Subspecies robertsoni - California Rotund-Resin Bee
Subspecies rufimaculatum - Florida Rotund-Resin Bee
Subspecies gilense - Gila Rotund-Resin Bee
Subspecies notatum - Eastern Rotund-Resin Bee
Species perplexum - Perplexing Rotund-Resin Bee
Genus Anthidium - Wool-carder Bees
No Taxon Subgenus Anthidium, Typical Wool-carder Bees
Species edwardsii - Edwards' Wool-carder Bee
Species emarginatum - Emarginate Wool-carder Bee
Species illustre - Anthidium illustre
Species maculifrons - Spot-fronted Wool-carder Bee
Species maculosum - Anthidium maculosum
Species manicatum - European Woolcarder
Species palliventre - Pacific Wool-carder Bee
Species porterae - Porter's Wool-carder Bee
Species psoraleae - Anthidium psoraleae
Species utahense - Utah Wool-carder Bee
No Taxon Former subgenus Callanthidium, i.e. A. formosum or A. illustre
No Taxon Subgenus Proanthidium
Species oblongatum - Oblong Woolcarder
Genus Dianthidium
Species curvatum - Dianthidium curvatum
Subspecies sayi - Dianthidium curvatum sayi
Species floridiense - Dianthidium floridiense
Species simile - Dianthidium simile
Genus Paranthidium
Species jugatorium - Paranthidium jugatorium
Subspecies perpictum - Paranthidium jugatorium perpictum
Subspecies jugatorium - Paranthidium jugatorium jugatorium
Subspecies lepidum - Paranthidium jugatorium lepidum
Genus Pseudoanthidium
Species nanum - Pseudoanthidium nanum
Genus Stelis
No Taxon Subgenus Stelis
Species coarctatus - Stelis coarctatus
Species diversicolor - Stelis diversicolor
Species interrupta - Stelis interrupta
Species lateralis - Stelis lateralis
Species melanotricha - Stelis melanotricha
No Taxon Subgenus Heterostelis
No Taxon Subgenus Dolichostelis
Species costalis - Stelis costalis
Species laticincta - Stelis laticincta
Species louisae - Stelis louisae
Species perpulchra - Stelis perpulchra
Species rudbeckiarum - Stelis rudbeckiarum
Genus Trachusa
No Taxon Subgenus Ulanthidium
Species manni - Trachusa manni
No Taxon Subgenus Trachusomimus
Species perdita - Trachusa perdita
No Taxon Subgenus Heteranthidium
Species fontemvitae - Trachusa fontemvitae
Species dorsalis - Trachusa dorsalis
Species larreae - Trachusa larreae
Species cordaticeps - Trachusa cordaticeps
Species timberlakei - Trachusa timberlakei
Species zebrata - Trachusa zebrata
Tribe Dioxyini
Genus Dioxys
Species productus - Dioxys productus
Tribe Megachilini
Genus Coelioxys - Cuckoo-leaf-cutter Bees
No Taxon Subgenus Acrocoelioxys, now included in subgenus Neocoelioxys
Species dolichos - Carpenter-mimic Cuckoo-leaf-cutter
No Taxon Subgenus Allocoelioxys
Species coturnix - Red-tipped Cuckoo-leaf-cutter
No Taxon Subgenus Boreocoelioxys, Northern Cuckoo-leaf-cutter Bees
Species banksi - Coelioxys banksi
Species octodentatus - Eight-toothed Cuckoo-leaf-cutter
Species porterae - Porter's Cuckoo-leaf-cutter
Species rufitarsis - Red-footed Cuckoo-leaf-cutter
Species sayi - Say's Cuckoo-leaf-cutter
No Taxon Subgenus Cyrtocoelioxys
Species modestus - Modest Cuckoo-leaf-cutter
No Taxon Subgenus Haplocoelioxys, now included in subgenus Glyptocoelioxys
Species mexicanus - Mexican Cuckoo-leaf-cutter
No Taxon Subgenus Synocoelioxys
Species alternatus - Alternate Cuckoo-leaf-cutter
Species hunteri - Hunter's Cuckoo-leaf-cutter
Species texanus - Coelioxys texana
No Taxon Subgenus Glyptocoelioxys
Species germanus - Coelioxys germanus
No Taxon Subgenus Xerocoelioxys
Species immaculatus - Coelioxys immaculatus
No Taxon Subgenus Neocoelioxys
Species slossoni - Coelioxys slossoni
Subspecies arenicola - Coelioxys slossoni arenicola
Subspecies slossoni - Coelioxys slossoni slossoni
Species menthae - Coelioxys menthae
Genus Megachile - Leafcutter, Resin, and Mortar Bees
No Taxon Subgenus Acentron, Large-toothed Leafcutters
Species albitarsis - White-footed Leafcutter
No Taxon Subgenus Argyropile, Bent-tailed Leaf-cutter Bees
Species parallela - Parallel Leaf-cutter Bee
No Taxon Subgenus Callomegachile, Giant Resin Bees
Species sculpturalis - Sculptured Resin Bee
Species umbripennis - Shadow-winged Resin Bee
No Taxon Subgenus Chelostomoides
Species angelarum - Megachile angelarum
Species campanulae - Bellflower Resin Bee
Species exilis - Slender Resin Bee
Species discorhina - Megachile discorhina
Species prosopidis - Megachile prosopidis
Species chilopsidis - Desert-willow Resin Bee
Species davidsoni - Golden-eardrops Resin Bee
No Taxon Subgenus Eutricharaea, Small Leaf-cutter Bees
Species apicalis - Apical Leafcutter Bee
Species pusilla - Megachile pusilla
Species rotundata - Alfalfa Leafcutter
No Taxon Subgenus Leptorachis
Species petulans - Petulant Leaf-cutter Bee
No Taxon Subgenus Litomegachile
Species brevis - Common Little Leaf-cutter Bee
Species gentilis - Megachile gentilis
Species mendica - Flat-tailed Leaf-cutter Bee
Species onobrychidis - Western Little Leaf-cutter Bee
Species pseudobrevis - Southeastern Little Leaf-cutter Bee
Species texana - Texas Leaf-cutter Bee
No Taxon Resembles lippiae
No Taxon lippiae or texana
No Taxon Subgenus Megachile
Species centuncularis - Linnean Leafcutter
Species inermis - Unarmed Leafcutter
Species montivaga - Silver-tailed Petalcutter
Species nivalis - Snowy Leafcutter
Species relativa - Golden-tailed Leafcutter
No Taxon Subgenus Megachiloides
No Taxon Subgenus Melanosarus, Black Leaf-cutter Bees
Species bahamensis - Bahama Leaf-cutter Bee
Species xylocopoides - Carpenter-mimic Leaf-cutter Bee
No Taxon Subgenus Pseudocentron
Species pruina - Hoary Leaf-cutter Bee
Subspecies nigropinguis - Megachile pruina nigropinguis
No Taxon Subgenus Pseudomegachile
Species lanata - Woolly Wall Bee
No Taxon Subgenus Sayapis
Species fidelis - Horn-faced Leaf-cutter Bee
Species inimica - Hostile Leaf-cutter Bee
Subspecies inimica - Megachile inimica inimica
Subspecies sayi - Megachile inimica sayi
Species newberryae - Newberry's leaf-cutter Bee
Species policaris - Megachile policaris
Species pugnata - Pugnacious Leaf-cutter Bee
Subspecies pugnata - Megachile pugnata pugnata
Subspecies pomonae - Megachile pugnata pomonae
No Taxon resembles inimica jacumbensis
Species frugalis - Megachile frugalis
Species zaptlana - Megachile zaptlana
No Taxon Subgenus Xanthosarus
Species addenda - Megachile addenda
Species comata - Megachile comata
Species frigida - Frigid Leafcutter
Species gemula - Small-handed Leaf-cutter Bee
Species latimanus - Broad-handed Leafcutter
Species melanophaea - Black-and-gray Leafcutter
Species perihirta - Western Leafcutter
No Taxon gemula or mucida
No Taxon melanophaea or mucida
No Taxon Subgenus Phaenosarus
Species fortis - Megachile fortis
No Taxon Subgenus Litomegachile or Megachile
No Taxon Megachile leaf damage
No Taxon Subgenus Megachiloides, Phaenosarus, or Xanthosarus
Tribe Osmiini
Genus Ashmeadiella
No Taxon Subgenus Arogochila
Species eurynorhyncha
No Taxon Subgenus Cubitognatha
Species xenomastax - Ashmeadiella xenomastax
No Taxon Subgenus Isosmia
Species rubrella - Ashmeadiella rubrella
No Taxon Subgenus Ashmeadiella
Species bigeloviae - Ashmeadiella bigeloviae
Genus Chelostoma
No Taxon Subgenus Foveosmia
Species campanularum - Chelostoma campanularum
Species californicum - Chelostoma californicum
No Taxon Subgenus Prochelostoma
Species philadelphi - Chelostoma philadelphi
No Taxon Subgenus Gyrodromella
Species rapunculi - Chelostoma rapunculi
Genus Heriades
Species carinata - Heriades carinata
Species leavitti - Heriades leavitti
Genus Hoplitis
No Taxon Subgenus Alcidamea sensu stricto
Species elongaticeps - Hoplitis elongaticeps
Species producta - Hoplitis producta
No Taxon producta or pilosifrons
No Taxon Former subgenus Cyrtosmia, now subgenus Alcidamea in part
Species hypocrita - Hoplitis hypocrita
No Taxon Former subgenus Monumetha, now subgenus Alcidamea in part
Species albifrons - Hoplitis albifrons
Subspecies maura - Hoplitis albifrons maura
Subspecies argentifrons - Hoplitis albifrons argentifrons
Species fulgida - Hoplitis fulgida
Subspecies fulgida - Hoplitis fulgida fulgida
Subspecies platyura - Hoplitis fulgida platyura
Species spoliata - Hoplitis spoliata
No Taxon Subgenus Proteriades
Species bullifacies - Hoplitis bullifacies
Species incanescens - Hoplitis incanescens
Species bunocephala - Hoplitis bunocephala
No Taxon Former subgenus Dasyosmia, now subgenus Alcidamea in part
Species biscutellae - Hoplitis biscutellae
No Taxon Subgenus Hoplitis
Species anthocopoides - Hoplitis anthocopoides
Genus Osmia - Mason Bees
No Taxon Subgenus Cephalosmia
Species montana - Osmia montana
Subspecies quadriceps - Osmia montana quadriceps
No Taxon Subgenus Diceratosmia
Species botitena - Osmia botitena
Species subfasciata - Osmia subfasciata
No Taxon Subgenus Euthosmia
Species glauca - Osmia glauca
No Taxon Subgenus Helicosmia
Species caerulescens - Osmia caerulescens
Species chalybea - Osmia chalybea
Species coloradensis - Colorado Osmia
Species georgica - Osmia georgica
Species texana - Texas Osmia
No Taxon Subgenus Melanosmia
Species aglaia - Osmia aglaia
Species integra - Osmia integra
Species bucephala - Bufflehead Mason Bee
Species calaminthae - Calamintha Osmia
Species clarescens - Osmia clarescens
Species cyanella - Osmia cyanella
Species dakotensis - Osmia dakotensis
Species distincta - Osmia distincta
Species foxi - Osmia foxi
Species pumila - Osmia pumila
Species rawlinsi - Osmia rawlinsi
Species simillima - Osmia simillima
Species longula - Osmia longula
No Taxon Chenosmia group including metallic green or blue Osmia
No Taxon likely Nothosmia Group II sensu Sinha
No Taxon resembles nemoris
No Taxon resembles proxima
No Taxon Subgenus Osmia
Species cornifrons - Hornfaced Bee
Species lignaria - Blue Orchard Bee
Subspecies lignaria - Osmia lignaria lignaria
Subspecies propinqua - Osmia lignaria propinqua
Species ribifloris - Osmia ribifloris
Subspecies biedermannii - Osmia ribifloris biedermannii
Subspecies ribifloris - Osmia ribifloris ribifloris
Species taurus - Osmia taurus
No Taxon cornifrons or taurus
Genus Protosmia - Subgenus Chelostomopsis
Species rubifloris - Protosmia rubifloris
No Taxon Hoplitis or Osmia
No Taxon Ashmeadiella or Hoplitis