Cryptocheilus pallidipenne
(Banks, 1911)
Cryptocheilus pallidipenne is a of spider wasp in the Pompilidae, described by Nathan Banks in 1911. The specific epithet "pallidipenne" refers to pale wings. Like other members of its , this species is a solitary that hunts spiders to provision nests for its larvae. It has been documented in Colorado and is attracted to flowering saltcedar (Tamarix) for nectar.
Pronunciation
How to pronounce Cryptocheilus pallidipenne: //ˌkrɪptoʊˈkaɪləs ˌpælɪdɪˈpɛn.i//
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Identification
Distinguished from other Cryptocheilus by pale wings, as indicated by the specific epithet "pallidipenne" (Latin: pallidus = pale, penna = wing). Members of the Cryptocheilus are generally large, robust spider wasps with long legs and typically exhibit orange or reddish coloration on the body. Positive identification to species level requires examination of wing coloration and other morphological details.
Habitat
Documented in association with flowering saltcedar (Tamarix sp.) trees in disturbed, open areas. The type of described—vacant plots with isolated blooming trees—suggests utilization of anthropogenically disturbed environments where nectar sources are available.
Distribution
Documented from Colorado Springs, Colorado, USA. The was originally described from western North America, though precise range boundaries are not well documented in available sources.
Seasonality
Active in June in Colorado, based on observations at flowering saltcedar trees during early summer.
Diet
feed on nectar from flowers, including saltcedar (Tamarix). Larvae are provisioned with paralyzed spiders, as is characteristic of the Pompilidae.
Host Associations
- Tamarix sp. - nectar source observed feeding at flowers
- Spiders (Araneae) - preyLarvae provisioned with paralyzed spiders; specific spider unknown
Life Cycle
Solitary nesting . Females hunt spiders, paralyze them with venom, and transport them to underground nests where a single is laid on each spider. The larva consumes the paralyzed spider, pupates, and emerges as an .
Behavior
Males have been observed establishing and defending territories around nectar sources (flowering saltcedar trees) where females are likely to visit. This territorial facilitates mating opportunities.
Ecological Role
of spiders; contributes to spider . function as while foraging for nectar. As a member of a diverse , contributes to function in disturbed .
Human Relevance
No documented direct economic impact. Attracted to saltcedar trees, which may provide incidental interest in the context of saltcedar management, though this is speculative.
Similar Taxa
- Hemipepsis ustulataAlso a large pompilid found at same saltcedar trees in Colorado; distinguished by larger size and different coloration (Hemipepsis typically black with orange wings)
- Other Cryptocheilus speciesSimilar body plan and coloration; C. pallidipenne specifically distinguished by pale wings per the epithet
More Details
Taxonomic note
The was described by Nathan Banks in 1911. The Cryptocheilus is part of the spider wasp Pompilidae, which contains over 5,000 described species worldwide.
Observation context
Documented during intensive surveys of insect diversity at a single blooming saltcedar tree in Colorado Springs, which attracted exceptional diversity including at least 30+ across multiple .