Pristaulacus editus
(Cresson, 1880)
Pristaulacus editus is a of aulacid in the Aulacidae. It is found in North America, with records from Canada including British Columbia. Aulacid wasps are of wood-boring beetles, particularly larvae of longhorned beetles (Cerambycidae) and jewel beetles (Buprestidae), as well as wood wasps in the family Xiphydriidae.
Pronunciation
How to pronounce Pristaulacus editus: /ˌprɪstɔːˈlæɪkəs ˈɛdɪtəs/
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Identification
Aulacid wasps including Pristaulacus editus can be distinguished from superficially similar ichneumon wasps by three key characters: the attaches high on the back of the rather than at the base; there is a short "neck" behind the ; and the ovipositor is somewhat sinuous (curved) rather than straight, with the tip downcurved. The hind have grooves on their inner surface that help guide and stabilize the ovipositor during wood penetration.
Habitat
Associated with cut or damaged wood, including logging operations, slash piles, and fallen timber. Females search for on freshly-cut logs and standing dead or dying trees.
Distribution
North America; recorded from Canada (British Columbia).
Host Associations
- Cerambycidae (longhorned beetles) - larval
- Buprestidae (jewel beetles) - larval
- Xiphydriidae (wood wasps) - larval
Behavior
Females walk haltingly across logs, bobbing their slightly and slowly rowing their wings. They probe cracks and crevices by inserting their deeply, apparently searching for larvae. Once a host is located, the female uses her ovipositor to insert into the wood to reach or wood wasp larvae.
Ecological Role
agent of wood-boring beetles. As a , helps regulate of longhorned beetles, jewel beetles, and wood wasps that bore into wood.
Human Relevance
Potential beneficial insect in forestry contexts, as they suppress of economically significant wood-boring pests. May be encountered by entomologists and naturalists at logging sites or where timber is processed.
Similar Taxa
- Ichneumonidae (ichneumon wasps)Superficially similar body plan with long ovipositor, but distinguished by abdominal attachment point, presence of "neck," and curved ovipositor tip
- Evaniidae (ensign wasps)Related in superfamily Evanioidea, sharing high abdominal attachment; aulacids lack the characteristic ensign-like
- Gasteruptiidae (carrot wasps)Related in superfamily Evanioidea, sharing high abdominal attachment and "neck"; differ in associations and ovipositor structure
More Details
Taxonomic note
Pristaulacus editus was described by Cresson in 1880. The Pristaulacus is one of two genera in the Aulacidae, with generally larger than those in the genus Aulacus.