Coelioxys aztecus
Cresson, 1878
Coelioxys aztecus is a of in the . As a member of the Coelioxys, this species is an obligate () of other , primarily targeting leafcutter bees (Megachile). The species was described by Cresson in 1878 and occurs in Middle America. Like other Coelioxys, females possess a distinctive pointed adapted for inserting into nest .
Pronunciation
How to pronounce Coelioxys aztecus: //ˌsiː.liˈɒk.sɪs æzˈtɛk.əs//
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Identification
Members of Coelioxys can be distinguished from other by the sharply pointed or tapered of females, an for -laying in . Males typically have broader, blunter abdomens. Coelioxys generally lack pollen- on the abdomen, unlike their Megachile hosts. Specific identification of C. aztecus requires examination of morphological details such as punctation patterns, coloration, and structure; the species name 'aztecus' suggests a Mexican distribution.
Distribution
Middle America (Mexico and Central America).
Host Associations
- Megachile - Coelioxys are obligate of Megachile leafcutter ; females insert into nest , and consume the host provision and often the host egg or larva
Ecological Role
As a , Coelioxys aztecus functions as a regulator of its . contribute to dynamics by exerting on host nesting behaviors and defensive strategies. They do not construct nests or collect pollen, instead relying entirely on host resources for .
Similar Taxa
- Coelioxys sodalisAnother Coelioxys with similar and parasitic lifestyle; requires detailed examination to distinguish
- Coelioxys octodentatusOverlapping distribution and associations; similar pointed abdominal structure in females
- Coelioxys rufitarsisWidespread North with similar kleptoparasitic ; C. aztecus distinguished by geographic range and subtle morphological differences
More Details
Taxonomic note
The specific epithet 'aztecus' reflects the ' description from Mexico, named in reference to the Aztec civilization. The Coelioxys contains approximately 500 species worldwide, with highest diversity in the Holarctic region.
Parasitic biology
Coelioxys females are known for their rapid, darting patterns as they search for nests. Upon locating a nest, the female enters during the host's absence, uses her pointed to slice through the leaf or mud cap of the host , and an on or near the host egg or . The Coelioxys larva typically has enlarged used to kill the host egg or young larva, then consumes the pollen-nectar provision.