Ancistrocerus capra spenceri

Ancistrocerus capra spenceri is a of mason wasp in the Vespidae, Eumeninae. As a member of the Ancistrocerus, it is a solitary that constructs mud nests and provisions them with paralyzed caterpillars for its developing larvae. The specific and distribution of this subspecies have not been well documented in available literature.

Pronunciation

How to pronounce Ancistrocerus capra spenceri: //ænˌsɪstrəˈsɪərəs ˈkæprə spɛnˈsɛri//

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Identification

Members of the Ancistrocerus can be distinguished by a prominent transverse carina (ridge) on the base of the first abdominal segment (T1), creating an abrupt angle where the meets the . This feature separates Ancistrocerus from similar genera where the abdomen slopes more gently toward the thorax. Specific diagnostic features for A. capra spenceri relative to the nominate A. capra capra have not been documented in available sources.

Ecological Role

As with other Ancistrocerus , this likely functions as a of caterpillars and contributes to natural control of . Mason wasps in this are not significant , as primarily feed on nectar and other sources for energy rather than actively collecting pollen.

Similar Taxa

Ancistrocerus capra capraThe nominate ; A. capra spenceri would be distinguished by subspecific morphological characters, though these have not been detailed in available sources.
Other Ancistrocerus speciesShare the diagnostic transverse carina on T1, but differ in color pattern, size, and specific markings on abdominal segments.

More Details

Nomenclatural note

The epithet 'spenceri' suggests this may have been named in honor of an individual, possibly the entomologist or collector Spencer, though the original description has not been consulted. The parent Ancistrocerus capra (Saussure, 1857) is a recognized mason wasp species.

Data limitations

No primary literature, collection records, or ecological studies specifically addressing Ancistrocerus capra spenceri were found in the provided sources. Information here is inferred from -level characteristics documented for other Ancistrocerus , particularly A. waldenii, A. unifasciatus, and A. campestris.