Pheidole californica

Mayr, 1870

California Big-headed Ant

Pheidole californica is a of big-headed in the Pheidole, characterized by the presence of dimorphic including small workers and large-headed soldiers. The species belongs to the diverse myrmicine ant fauna of western North America. Like other Pheidole species, it exhibits the classic soldier-worker caste system where soldiers possess disproportionately enlarged and used for defense and food processing. The species was described by Mayr in 1870 and includes two recognized : P. c. californica and P. c. oregonica.

Pheidole californica var. incenata by the Smithsonian. Used under a CC0 license.

Pronunciation

How to pronounce Pheidole californica: /faɪˈdoʊli kæləˈfɔrnɪkə/

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Identification

Distinguished from other Pheidole by geographic distribution combined with . Soldiers show the characteristic Pheidole major morphology with enlarged . Specific diagnostic features separating P. californica from other western North American Pheidole species require examination of morphological characters not detailed in available sources. P. c. oregonica differentiated from nominate subspecies by geographic range and subtle morphological differences.

Images

Appearance

dimorphic with distinct major (soldier) and minor . Soldiers possess disproportionately large, square-shaped with powerful ; head width notably exceeds that of mesosoma. Minor workers smaller with proportionate head size. Body coloration and specific measurements not documented in available sources.

Distribution

Western North America. Nominate P. c. californica occurs in California; subspecies P. c. oregonica occurs in Oregon. Specific associations and elevational range not documented in available sources.

Similar Taxa

Pheidole megacephalaBoth are big-headed ants with dimorphic , but P. megacephala is a globally distributed with documented plasticity in soldier size, while P. californica is native to western North America with restricted distribution

More Details

Subspecies

Two recognized: Pheidole californica californica Mayr, 1870 (California) and Pheidole californica oregonica Emery, 1895 (Oregon)

Taxonomic history

Originally described by Mayr in 1870; oregonica described by Emery in 1895