Pheidole torosa, Wilson, E. O., 2003

Wilson, E. O., 2003, Pheidole in the New World. A dominant, hyperdiverse ant genus., Cambridge, MA: Harvard University Press : 603

publication ID

20017

DOI

https://doi.org/10.5281/zenodo.6274346

persistent identifier

https://treatment.plazi.org/id/176FF54F-7C26-56D5-B5B4-10F0BBFBB71A

treatment provided by

Donat

scientific name

Pheidole torosa
status

new species

Pheidole torosa   HNS new species

Types Mus. Comp. Zool. Harvard.

Etymology L torosa   HNS , muscular, bulging, a reference to the major caste.

diagnosis A member of the " pilifera   HNS complex" of the larger pilifera   HNS group, comprising calens   HNS , californica   HNS , carrolli   HNS , cavigenis   HNS , clementensis   HNS , creightoni   HNS , hoplitica   HNS , littoralis   HNS , micula   HNS , pilifera   HNS , polymorpha   HNS , rugulosa   HNS , senex   HNS , soritis   HNS , tepicana   HNS , and torosa   HNS , which complex is distinguished by the following traits. Major: dorsal head surface extensively sculptured; occipital lobe transversely rugulose (or, in carrolli   HNS smooth, in littoralis   HNS foveate, and in micula   HNS and soritis   HNS carinulate); postpetiole from above diamond-shaped, trapezoidal, or spinose. Minor: eye medium-sized to large. P. torosa   HNS is distinguished within the complex as follows.

Major: bicolorous; transverse rugulae cover posterior fifth of dorsal surface of head in full-face view, and longitudinal carinulae cover all of the remainder of the dorsal surface except the frontal triangle; humerus in dorsal-oblique view prominent and lobose; in side view, mesonotum drops almost vertically to metanotum; propodeal spines very long, stout, and vertical to propodeal basal face; seen from above, postpetiole very wide relative to petiole, and spinose.

Minor: all of head and mesosoma foveolate and opaque; pilosity along promesonotal dorsum consists of evenly spaced pairs of setae.

This species is very close to and possibly synonymous with senex   HNS .

Measurements (mm) Holotype major: HW 1.56, HL 1.84, SL 0.76, EL 0.20, PW 0.68.

Paratype minor: HW 0.58, HL 0.64, SL 0.62, EL 0.14, PW 0.32.

color Major: bicolorous, with light reddish brown head and appendages contrasting with dark brown mesosoma and gaster.

Minor: concolorous light brown.

Range Known only from the type locality.

Biology Unknown.

Figure Upper: holotype, major. Lower: paratype, minor. MEXICO: El Sueco, Chihuahua. Scale bars = 1 mm.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Formicidae

Genus

Pheidole

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