Sphecodes solonis

Graenicher, 1911

sweat bee

Sphecodes solonis is a of sweat bee in the Halictidae. It is a cleptoparasitic or 'cuckoo' , meaning females lay their in the nests of other solitary bees. The species was described by Graenicher in 1911. Like other members of the Sphecodes, it exhibits a -like appearance with a slender waist and typically reddish or dark coloration.

Pronunciation

How to pronounce Sphecodes solonis: /ˈsfɛkoʊdiːz səˈloʊnɪs/

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Identification

Sphecodes are distinguished from other sweat bees by their cleptoparasitic : reduced scopae (pollen-collecting hairs) on the hind legs, slender -like build, and often reddish coloration. They can be confused with wasps or with other cleptoparasitic bees such as Nomada (Nomada bees tend to have more yellow and black banding) or Triepeolus (which are generally larger and in a different , Apidae). Specific identification of S. solonis likely requires examination of microscopic features such as wing venation, punctation patterns, and genitalia.

Appearance

Members of the Sphecodes typically exhibit a slender, -like body form with a constricted waist. They often display reddish or dark coloration, with some showing red and black patterns. The body is generally less hairy than non-parasitic bees, reflecting their cleptoparasitic lifestyle which does not require pollen collection.

Habitat

Sphecodes are typically found in areas where their bees nest. This includes sunny banks, bare ground patches, and other locations suitable for ground-nesting sweat bees (Halictus and Lasioglossum species).

Distribution

North America; specifically recorded from Vermont, United States.

Host Associations

Halictus - Sphecodes are of ground-nesting sweat bees in the genera Halictus and Lasioglossum
Lasioglossum - Primary for many Sphecodes

Life Cycle

As a cleptoparasitic , Sphecodes solonis does not construct its own nest or provision food for its young. Females enter the nests of sweat bees, often waiting near nest entrances for the host to leave before entering. They lay their in the host's . The resulting larvae consume the host's pollen and nectar provisions and typically kill and consume the host's egg or larva.

Behavior

Females exhibit nest-searching , hovering low to the ground while searching for burrows. They are known to wait at nest entrances for opportunities to enter unoccupied nests. Some Sphecodes have been observed using force to enter nests, removing host bees and their offspring.

Ecological Role

As a , Sphecodes solonis functions as a regulator of its sweat bee . While this parasitic relationship reduces host reproductive success, it is a natural component of dynamics and contributes to biodiversity within bee .

Human Relevance

Like other native bees, Sphecodes solonis contributes to overall diversity and may serve as an indicator of healthy sweat bee . However, as a with no direct pollination role, it has no direct agricultural or economic significance. Its presence indicates functioning with adequate bee populations.

Similar Taxa

NomadaAlso cleptoparasitic bees with -like appearance; Nomada typically show more yellow and black banding and are in Apidae rather than Halictidae
TriepeolusCleptoparasitic bees in Apidae that resemble Sphecodes; generally larger and with different wing venation
HalictusNon-parasitic sweat bees that Sphecodes resembles; distinguished by presence of scopae for pollen collection and more robust, hairier build

More Details

Taxonomic history

Described by Swiss-American entomologist S. Graenicher in 1911. The specific epithet 'solonis' derivation is not documented in available sources.

Conservation status

No specific conservation assessment available for this . Like many native bees, likely vulnerable to loss, exposure, and declines in .