Sceliphrini
Ashmead, 1899
Mud-dauber Wasps
Genus Guides
2- Chalybion(blue mud dauber wasps)
- Sceliphron(black-and-yellow mud dauber wasps)
Sceliphrini is a tribe of solitary within the Sphecidae, commonly known as mud-dauber wasps. Members construct nests from mud, often attaching them to human-made structures or natural substrates. The tribe includes such as Sceliphron and Chalybion, which are widely distributed and frequently encountered. These wasps are that provision their nests with paralyzed spiders for their larvae.
Pronunciation
How to pronounce Sceliphrini: /sˌkɛlɪˈfrɪnaɪ/
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Identification
Sceliphrini are recognized by their elongated, thread-waisted petiole connecting the and . They have a smooth, often metallic blue-black or black body with minimal hair. The hind legs are modified for carrying mud during nest construction. Sceliphron typically show a more pronounced constriction at the petiole compared to related groups. Chalybion species often appear more robust with a less dramatically narrowed waist.
Images
Habitat
Found in diverse environments including urban areas, woodlands, grasslands, and riparian zones. Nests are commonly built on protected vertical surfaces such as walls, eaves, bridges, and rock overhangs. Access to moist soil or mud sources is essential for nest construction.
Distribution
distribution with present on all continents except Antarctica. Particularly diverse in tropical and temperate regions. Individual show varying ranges: Sceliphron is nearly worldwide, while Chalybion is more restricted to certain regions.
Seasonality
Active primarily during warm months, with peak activity in spring and summer in temperate regions. In tropical areas, activity may extend throughout the year. often overwinter in protected locations.
Diet
feed on nectar from flowers. Larvae are fed exclusively on paralyzed spiders captured by the adult female.
Host Associations
- spider - preyFemales hunt, sting, and paralyze spiders to provision nest . Spider Araneidae, Salticidae, and others have been recorded as prey.
Life Cycle
Solitary nesting with no . Females construct mud nests consisting of one or more , each provisioned with multiple paralyzed spiders and a single . Larvae develop through several instars, pupate within the cell, and emerge as . Males do not participate in nest construction or provisioning.
Behavior
Females are adept at manipulating mud, collecting it in pellets and shaping it into nest . They demonstrate precise hunting , capturing spiders without killing them to preserve freshness for larval consumption. Nest guarding is minimal; females may abandon completed nests. Some reuse or usurp existing mud nests.
Ecological Role
that regulate spider . Nests provide incidental for other organisms including and kleptoparasitic insects that exploit the spider provisions.
Human Relevance
Generally considered beneficial due to spider control. Nests on buildings are often tolerated or removed without conflict. Stings are rare and typically occur only if a female is directly handled. The 'mud-dauber' directly references their nest-building material.
Similar Taxa
- TrypoxyloniniAlso mud-nesting sphecids, but construct more cylindrical, often linear arrangements and use different prey (primarily caterpillars rather than spiders).
- SpheciniThread-waisted sphecids that nest in soil or pre-existing cavities rather than building exposed mud structures; prey includes crickets and grasshoppers.
More Details
Taxonomic Note
The classification of Sphecidae has undergone significant revision. Sceliphrini was historically placed in a broader Sphecidae; some contemporary treatments recognize a more restricted Sphecidae with Sceliphrinae (including Sceliphrini) placed in Crabronidae or as a separate .