Crabroninae

Latreille, 1802

digger wasps

Tribe Guides

6

Crabroninae is the most diverse of Crabronidae, containing over 110 and approximately 4,800 described . Members are solitary, predatory . females exhibit diverse nesting strategies: many excavate underground tunnels, while others construct tube-like mud nests. Females hunt and paralyze prey to provision nests for their larvae.

Anacrabro by (c) bdagley, some rights reserved (CC BY), uploaded by bdagley. Used under a CC-BY license.Tachytes by (c) Louise Woodrich, some rights reserved (CC BY), uploaded by Louise Woodrich. Used under a CC-BY license.Tachytes by (c) Louise Woodrich, some rights reserved (CC BY), uploaded by Louise Woodrich. Used under a CC-BY license.

Pronunciation

How to pronounce Crabroninae: /ˌkræbrəˈnaɪni/

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Images

Habitat

Ground-nesting prefer flat, sandy areas with sparse vegetation for tunnel excavation. Mud-nesting species utilize substrates suitable for constructing tube-like nests.

Distribution

Worldwide distribution. Documented from the Ethiopian region (South Africa, Zimbabwe), Oriental region (Sri Lanka, India), and North America.

Diet

Larvae are , fed paralyzed living prey by provisioning females. Specific prey varies by : some prey on Orthoptera (tree crickets), others on Coleoptera (leaf beetles), and others on Diptera (flies).

Life Cycle

Females construct nests prior to hunting. Nests contain 1–15 , each provisioned with paralyzed prey and a single . Larvae consume the provided prey and pupate within the nest; some construct cocoons incorporating prey remains (e.g., ).

Behavior

Solitary nesting with diverse techniques including ground tunneling and mud nest construction. Females employ specialized stinging patterns to paralyze prey: some deliver multiple thoracic stings matching prey ganglion structure, while others (e.g., Oxybelus) deliver a single thoracic sting adapted to prey with ganglia. Some use the sting for prey carriage.

Ecological Role

of various groups including Orthoptera, Coleoptera, and Diptera. May contribute to of prey .

Sources and further reading