Cryptocheilus attenuatum
Banks, 1933
Cryptocheilus attenuatum is a of spider wasp in the Pompilidae, described by Banks in 1933. Like other members of its , it is a solitary that hunts spiders to provision nests for its larvae. The species has been documented visiting flowers for nectar, particularly at blooming saltcedar (Tamarix) trees in Colorado. Observations suggest males may establish territories around nectar sources to encounter females.
Pronunciation
How to pronounce Cryptocheilus attenuatum: //ˌkrɪptoʊˈkaɪləs əˌtɛnjuˈeɪtəm//
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Habitat
Has been observed in disturbed areas with blooming saltcedar (Tamarix sp.) trees in Colorado Springs, Colorado. Saltcedar include riparian corridors, moist pastures, and vacant lots with access to water tables.
Distribution
Documented from Colorado, USA. The was described from western North American material, but precise range boundaries remain poorly documented.
Seasonality
have been observed in mid-June in Colorado, coinciding with blooming periods of saltcedar trees.
Diet
feed on nectar from flowers, including saltcedar (Tamarix) blossoms. Larvae are presumably fed spiders, as is characteristic of the , though direct observations of prey are not documented for this .
Host Associations
- Tamarix - nectar sourceblooming saltcedar trees attract for feeding
Behavior
have been observed visiting flowers for nectar. Males of related in the are known to establish territories around nectar sources to intercept females, and this may occur in C. attenuatum given observations of other Cryptocheilus at the same sites.
Ecological Role
As a nectar visitor, contributes to pollination of flowering plants. As a spider wasp, likely functions as a of spiders, potentially influencing spider .
Similar Taxa
- Cryptocheilus sp. (undetermined species)Other Cryptocheilus were observed at the same sites; C. attenuatum requires careful examination to distinguish from .
- Hemipepsis ustulataLarger tarantula hawk also observed at same saltcedar trees; C. attenuatum is smaller and differs in coloration and body proportions.
More Details
Nectar Source Associations
Multiple observations link this to blooming saltcedar (Tamarix), an Eurasian tree that attracts diverse in western North America. The wasp's presence at this introduced plant demonstrates utilization of novel resources in modified .