Pheidole riveti

Nothing is known about the biology of riveti.

Identification
See the description in the nomenclature section.

Distribution
Only known from the type locality.

Distribution based on Regional Taxon Lists
Neotropical Region: Colombia, Ecuador.

Worker
Minor

Images from AntWeb
Major

Nomenclature

 *  riveti. Pheidole riveti Santschi, 1911i: 278 (s.w.q.) ECUADOR. [Also described as new by Santschi, 1913h: 37.] See also: Wilson, 2003: 224.

Description
From Wilson (2003): Similar in various ways to Pheidole alfaroi, Pheidole diana, Pheidole laelaps, Pheidole seligmanni and Pheidole tepuicola, distinguished as follows.

Major: propodeal spine reduced to obtuse angle in side view, right angle in dorsal-oblique view; postpetiolar node in side view suppressed, in dorsal view narrow and bell-shaped; occipital margin smooth; carinulae originating on frontal lobes spread laterally as they approach occipital margin; propodeal dorsum and margins of promesonotal dorsum transversely carinulate.

Minor: head “tiger-striped” with semicircular carinulae, as depicted; propodeal dorsum transversely carinulate; occiput narrow but lacks nuchal collar; postpetiolar node in side view suppressed and entire postpetiole cylindrical.

MEASUREMENTS (mm) Lectotype major: HW 1.12, HL 1.16, SL (scapes missing), EL 0.14, PW 0.54. Paralectotype minor: HW 0.62, HL 0.76, SL 0.76, EL 0.14, PW 0.40.

COLOR Major: concolorous light brown.

Minor: concolorous medium brown.



'''Figure. Upper: lectotype, major. Lower: paralectotype, minor. Scale bars = 1 mm.'''

Type Material
ECUADOR: El Angel, near Tulcán,north-central Ecuador, 3000 m, col. P. Rivet. - as reported in Wilson (2003)

Etymology
Named after the collector, P. Rivet. (Wilson 2003)

References based on Global Ant Biodiversity Informatics

 * Fernández, F. and S. Sendoya. 2004. Lista de las hormigas neotropicales. Biota Colombiana Volume 5, Number 1.
 * Kempf, W.W. 1972. Catalago abreviado das formigas da regiao Neotropical (Hym. Formicidae) Studia Entomologica 15(1-4).