Ericrocis
Cresson, 1887
Ericrocis is a of kleptoparasitic in the , commonly known as centris-. The genus comprises at least four described distributed in the southwestern United States and Mexico. As cuckoo bees, Ericrocis species do not construct their own nests but instead lay in the nests of bees, primarily in the genus Centris. The genus was established by Cresson in 1887 and belongs to the tribe Ericrocidini.
Pronunciation
How to pronounce Ericrocis: /ˌɛrɪˈkroʊsɪs/
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Identification
Ericrocis can be distinguished from their Centris by their generally more slender body form and reduced scopal hairs on the hind legs, as females do not collect pollen. They typically exhibit dense, often silvery or pale . Males may be distinguished by genitalic characters, though species-level identification often requires examination of subtle morphological features such as facial markings and .
Images
Habitat
Arid and semi-arid regions of the southwestern United States and Mexico, including desert scrub, chaparral, and dry grassland . Associated with areas where Centris are active.
Distribution
Southwestern United States (Arizona, California, New Mexico, Texas) and Mexico.
Seasonality
Active primarily during warm months when Centris are nesting; peak activity typically occurs in late spring through summer depending on locality and .
Diet
feed on nectar from flowers. consume provisions (nectar and pollen) stored in nests; females do not forage for pollen due to their kleptoparasitic lifestyle.
Host Associations
- Centris - Primary ; Ericrocis females lay in Centris nests
Life Cycle
Development occurs within nests. Females enter unguarded Centris nests and in . consume the host's provisioned food stores, typically killing the host egg or larva. occurs within the host ; emerge to mate and seek new host nests.
Behavior
Females exhibit nest-searching , areas where Centris are active to locate unguarded nests. They may enter nests during absence to . Males are often observed at flowers or in searching for females.
Ecological Role
() of Centris ; acts as a natural regulator of bee populations. Contributes to indirectly through nectar feeding.