Sweat-bee
Guides
Lasioglossum titusi
Titus's Sweat Bee, Titus' Lasioglossum
Lasioglossum titusi is a solitary sweat bee in the family Halictidae, native to North America. It is a ground-nesting species that excavates burrows in flat, bare soil, often forming nest aggregations with multiple individuals nesting in close proximity. As a polylectic species, it collects pollen from a wide variety of flowering plants rather than specializing on a single host. The species is part of the largest genus of bees, Lasioglossum, which contains over 1,700 species globally.
Lasioglossum truncatum
Truncate Sweat Bee
Lasioglossum truncatum is a species of sweat bee in the family Halictidae, one of over 1,700 species in the genus Lasioglossum. Like other members of this large genus, it is a ground-nesting solitary bee. The species occurs in North America and has been documented in Vermont and other regions. As with many Lasioglossum species, detailed natural history information specific to L. truncatum is limited, though it shares general ecological traits with its congeners.
Lasioglossum tuolumnense
Lasioglossum tuolumnense is a species of sweat bee in the family Halictidae, described by Gibbs in 2009. It belongs to the genus Lasioglossum, the largest genus of bees with over 1,700 species. As a halictid bee, it is likely a ground-nesting solitary or semi-social species, though specific details about its biology remain poorly documented.
Lasioglossum versans
Friendless Sweat Bee
Lasioglossum versans is a species of sweat bee in the family Halictidae, subgenus Dialictus. It was described by Lovell in 1905 and is one of 84 metallic Dialictus species treated in the Canadian taxonomic revision. The species is known from North America with records from Vermont. Like other members of the large genus Lasioglossum, it is a ground-nesting bee with likely solitary or semi-social nesting biology.
Lasioglossum versatum
Experienced Sweat Bee
Lasioglossum versatum is a sweat bee species in the family Halictidae, subgenus Dialictus, native to North America. It was described by Robertson in 1902 and has undergone taxonomic revision, with three synonymies proposed in a 2010 Canadian revision. Like other Dialictus species, it is small and likely metallic, though specific ecological details remain poorly documented. The species contributes to the diverse assemblage of Lasioglossum bees that dominate many North American bee surveys.
Lasioglossum viridatum
sweat bee
Lasioglossum viridatum is a small sweat bee in the family Halictidae, described by Lovell in 1905. Like other members of its genus, it is a ground-nesting solitary or semi-social bee. The species is part of the enormous Lasioglossum genus, which contains over 1,700 species globally and is frequently encountered in bee monitoring studies due to its abundance. It has been recorded in North America, with specific observations from Vermont.
Lasioglossum weemsi
Weems's Sweat Bee
Lasioglossum weemsi is a small sweat bee in the subgenus Dialictus, one of the most species-rich groups of bees in North America. Originally described by Mitchell in 1960, this species was subsequently documented as a new record for Canada. Like other members of Dialictus, it belongs to a group noted for diverse social systems ranging from solitary to eusocial behavior. The species is part of the larger genus Lasioglossum, which comprises over 1,700 species globally and represents a significant component of native bee communities.
Lasioglossum zephyrus
Zephyr Sweat Bee
Lasioglossum zephyrus is a small sweat bee in the family Halictidae, native to the United States and Canada. The species exhibits primitively eusocial behavior with flexible social organization—colonies may contain multiple females with overlapping generations, or females may nest solitarily. Nests are constructed in soil burrows, often in aggregations of up to 1,000 nests along south-facing stream banks. Males are slightly larger than females, with brighter metallic green coloration and redder abdomens.
Lasioglossum zonulum
Sweat bee
Lasioglossum zonulum is a small sweat bee in the family Halictidae, native to Europe and introduced to North America. It belongs to the subgenus Dialictus, one of the most species-rich groups of bees globally. Like other Lasioglossum species, it is a ground-nesting bee that visits flowers for pollen and nectar. The species is notable for being frequently captured in bowl traps used for bee monitoring, a trait common to many small halictid bees.
Mexalictus arizonensis
Arizona mexalictus
Mexalictus arizonensis, commonly known as the Arizona mexalictus, is a species of sweat bee in the family Halictidae. It is a small, solitary bee endemic to the southwestern United States. The species was described by Eickwort in 1978 and is one of the few members of the genus Mexalictus, a group of bees restricted to North America. Like other halictids, it is likely a generalist pollinator, though specific ecological details remain poorly documented.
Micralictoides ruficaudus
Red-tailed Micro-Shortface
Micralictoides ruficaudus is a species of sweat bee in the family Halictidae, first described by Michener in 1937. It is a member of the subfamily Rophitinae, a group of solitary bees often associated with specialized pollen-collecting behaviors. The species is known from North America, with observations documented across multiple regions. As with many halictid bees, it likely plays a role in pollination of native flora.
Nomia nortoni
Norton's Alkali Bee, Norton's Nomium
Nomia nortoni is a species of sweat bee in the family Halictidae, commonly known as Norton's alkali bee or Norton's nomium. It is native to Central America and North America. The species has two recognized subspecies: N. n. cressoni and N. n. nortoni. As a member of the genus Nomia, it is related to other alkali bees that are known for their ground-nesting behavior in alkaline soils.
Nomia tetrazonata
four-banded nomia, four-banded nomium
Nomia tetrazonata is a ground-nesting sweat bee in the family Halictidae, commonly known as the four-banded nomia. The species exhibits communal nesting behavior, with multiple females sharing a common nest entrance while independently constructing and provisioning individual cells within the same burrow system. Males patrol nesting sites and perform stereotyped courtship displays involving leg movements and antennae contact. The species occurs in North and Central America.
Protodufourea
Protodufourea is a genus of sweat bees in the family Halictidae, established by Timberlake in 1955. The genus contains approximately five described species. It belongs to the subfamily Rophitinae and tribe Rophitini, a group of bees often associated with specialized floral relationships.
Pseudaugochlora graminea
Grassy Green-Sweat Bee
Pseudaugochlora graminea is a species of sweat bee in the family Halictidae, distributed across the Neotropics from Mexico through Central America to South America. As a member of the tribe Augochlorini, it exhibits the metallic green coloration typical of this group. The species has been documented in 613 iNaturalist observations, indicating it is relatively well-observed within its range.
Sphecodes aroniae
Sphecodes aroniae is a species of sweat bee in the family Halictidae. It belongs to a genus of cleptoparasitic bees commonly known as blood bees, which lay eggs in the nests of other solitary bees. The species was described by Mitchell in 1960 and is known from North America, with confirmed records from Vermont, United States.
Sphecodes confertus
Sphecodes confertus is a species of cleptoparasitic sweat bee in the family Halictidae, first described by Thomas Say in 1837. Like other members of the genus Sphecodes, this species is a nest parasite of other halictid bees. The species has been recorded in North America, with confirmed observations from Vermont.
Sphecodes davisii
Davis's Cuckoo Sweat Bee
Sphecodes davisii is a cleptoparasitic sweat bee in the family Halictidae. As a member of the genus Sphecodes, it exhibits the cuckoo bee lifestyle: females enter nests of host sweat bees to lay eggs in brood cells, where their larvae consume the host's provisions and developing young. The species is native to North America, with documented records from Vermont and broader North American distribution. Like other Sphecodes, it likely targets ground-nesting Halictidae as hosts.
Sphecodes heraclei
Cyclops Blood Bee
Sphecodes heraclei is a species of cleptoparasitic sweat bee in the family Halictidae, commonly known as the Cyclops Blood Bee. Like other members of the genus Sphecodes, females lay their eggs in the nests of other solitary bees, particularly sweat bees in the subfamily Halictinae. The larvae consume the host's food stores and parasitize the host larvae. The species is native to North America and Central America, with records from both regions.
Sphecodes johnsonii
Johnson's sphecodes
Sphecodes johnsonii is a species of sweat bee in the family Halictidae. It belongs to the genus Sphecodes, commonly known as blood bees or cuckoo sweat bees, which are kleptoparasitic bees that exploit the nests of other bees. The species was described by Lovell in 1909 and is found in North America.
Sphecodes mandibularis
Sphecodes mandibularis is a species of sweat bee in the family Halictidae, first described by Cresson in 1872. The genus Sphecodes comprises cleptoparasitic bees that typically invade nests of other halictid bees. This species has been recorded in North America, with confirmed observations in Vermont, United States. Like other members of its genus, it likely exhibits kleptoparasitic behavior, though specific biological details for this species remain poorly documented.
Sphecodes ranunculi
Blood Bee
Sphecodes ranunculi is a species of cleptoparasitic sweat bee in the family Halictidae, first described by Robertson in 1897. As a member of the genus Sphecodes, commonly known as "blood bees" for their typically red and black coloration, this species exhibits the cuckoo-like reproductive strategy characteristic of the genus: females invade nests of other solitary bees to lay eggs in host brood chambers. The parasitic larvae consume the host's pollen provisions and prey upon the host's developing young.
Sphecodes solonis
sweat bee
Sphecodes solonis is a species of sweat bee in the family Halictidae. It is a cleptoparasitic or 'cuckoo' bee, meaning females lay their eggs in the nests of other solitary bees. The species was described by Graenicher in 1911. Like other members of the genus Sphecodes, it exhibits a wasp-like appearance with a slender waist and typically reddish or dark coloration.
Sphecodosoma dicksoni
Dickson's Nama-Shortface
Sphecodosoma dicksoni is a species of sweat bee in the family Halictidae, first described by Timberlake in 1961. It belongs to the genus Sphecodosoma, commonly known as nama-shortface bees. The species has been recorded in Central America and North America. Very few observations exist in citizen science databases, suggesting it may be uncommon or underreported.
Xeralictus timberlakei
Timberlake's Blazingstar-Shortface
Xeralictus timberlakei is a species of sweat bee in the family Halictidae, first described by Cockerell in 1927. It is one of at least two species in the genus Xeralictus, which are rare bees associated with floral mimicry systems in southwestern North America. The species is found in North America, though specific details about its biology remain poorly documented compared to its congener X. bicuspidariae.