Pheidole ambigua , Wilson, E. O., 2003

Wilson, E. O., 2003, Pheidole in the New World. A dominant, hyperdiverse ant genus., Cambridge, MA: Harvard University Press, pp. -1--1: 652

publication ID

20017

persistent identifier

http://treatment.plazi.org/id/14788500-7423-82B7-AE79-7F892D6ED08C

treatment provided by

Donat

scientific name

Pheidole ambigua
status

new species

Pheidole ambigua  HNS  new species

Types Mus. Comp. Zool. Harvard.

etymology L ambigua  HNS  , uncertain, doubtful.

diagnosis A medium-sized member of the tristis  HNS  group, similar to amata  HNS  , celaena  HNS  , fera  HNS  , germaini  HNS  , peruviana  HNS  , rutilana  HNS  , schwarzmaieri  HNS  , vomer  HNS  , and possibly the same as bruchi  HNS  of Argentina, on the basis of resemblance of the minor (major syntypes of bruchi  HNS  could not be located in the Forel collection at the time of study). The paratype minor of ambigua  HNS  differs from a syntype minor of bruchi  HNS  in its more abundant pilosity, lighter color, and foveolate promesonotal dorsum. Otherwise, ambigua  HNS  is distinguished within the tristis  HNS  group by the following combination of traits.

Major: anterior two-thirds of dorsum of head carinulate, remainder smooth and shiny; carinulae on rest of body limited to anterior strip of pronotal dorsum; humerus in dorsal-oblique view moderately prominent and lobose; postpetiole from above diamond-shaped. Minor: pilosity sparse; propodeal spines reduced to denticles; promesonotal profile in dorsal-oblique view smoothly convex; occiput narrowed, with a nuchal collar.

Measurements (mm) Holotype major: HW 1.54, HL 1.74, SL 0.78, EL 0.18, PW 0.72.

Paratype minor: HW 0.56, HL 0.62, SL 0.74, EL 0.40, PW 0.36.

color Major: light reddish yellow.

Minor: body light yellowish brown, appendages yellow.

range Known only from the type locality.

Biology Unknown.

figure Upper: holotype, major. Lower: paratype, minor. BRAZIL: Caraguatatuba Reserva Florestal, Sao Paulo (William L. and Doris E. Brown). Scale bars = 1 mm.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Formicidae

Genus

Pheidole