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Species: Pheidole terribilis   Wilson, 2003 

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Taxonomic History (provided by Barry Bolton, 2023)

Pheidole terribilis Wilson, 2003a: 764, figs. (s.w.) SURINAME. Neotropic. Primary type information: Primary type material: holotype major worker. Primary type locality: Suriname: Voltzberg Camp, Raleigh-Vallen-Voltzberg Reserve, 90 m. (J. Carpenter & D. Trail). Primary type depository: MCZC. Secondary type information: Secondary type material: 1 paratype minor worker. Secondary type locality: same as for holotype. Secondary type depository: MCZC. Type notes: Details of paratype castes and their numbers are not given. AntCat AntWiki HOL
// Distribution


  Geographic regions (According to curated Geolocale/Taxon lists):
    Americas: Bolivia, Brazil, French Guiana, Suriname
  Biogeographic regions (According to curated Bioregion/Taxon lists):


J. Longino, 29 Oct 2021: Pheidole gauthieri Forel 1901 from Colombia, the jr. syn. oxymora Forel 1912 from Panama, horribilis Wilson 2003 from Ecuador, minax Wilson 2003 from Peru, and terribilis Wilson 2003 from Suriname are all very similar. They have minor differences in sculpture. The posterior face of the major varies from nearly smooth to moderately carinulate. In both castes, the dorsum of the first abdominal tergite can be smooth and shining or with varying degrees of shagreening. These could be treated as a single geographically variable species, or split out into these cryptic species. So far I have seen no evidence of sympatry among these forms.

Taxonomic Treatment (provided by Plazi)

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

Pheidole terribilisHNS new species

Types Mus. Comp. Zool. Harvard.

Etymology L terribilis, dreadful, frightful.

Diagnosis Similar in various traits to the species listed in the heading above, differing as follows.

Major: propodeal spine stout, about half as long as propodeal basal face; rear third of head smooth, with scattered foveae; a loose rugoreticulum between eye and antennal fossa on each side; frontal lobes and vertex carinulate; anterior half of promesonotum rugoreticulate, rear half smooth; postpetiolar dorsum foveolate and carinulate; gaster entirely smooth.

Minor: occiput and sides of head to level of eyes rugoreticulate; lower half of mesopleuron loosely rugose, and dorsum foveolate only, with rest of promesothorax rugoreticulate.

Measurements (mm) Holotype major: HW 1.80, HL 1.86, SL 0.94, EL 0.20, PW 0.90. Paratype minor: HW 0.76, HL 0.70, SL 0.82, EL 0.14, PW 0.50.

Color Major: body, antennae, mandibles medium reddish brown; legs brownish yellow.

Minor: mesosoma, waist, and appendages light to medium reddish brown; head and gaster dark reddish brown.

Range Known from the type locality, and 35 km south-southeast of Flor de Oro, Santa Cruz, Bolivia, 450 m (P. S. Ward).

Biology Unknown.

Figure Upper: holotype, major. Lower: paratype, minor. SURINAME: Voltzberg Camp, Raleigh-Vallen-Voltzberg Reserve, 90 m (James Carpenter and D. Trail). Scale bars = 1 mm.

Specimen Habitat Summary

Found most commonly in these habitats: 1 times found in TerraFirme.

Found most commonly in these microhabitats: 1 times LeafLitter.

Collected most commonly using these methods: 1 times Winkler48h.

Elevations: collected from 90 - 336 meters, 172 meters average

Collect Date Range: collected between 1982-01-29 00:00:00.0 and 2015-03-04 00:00:00.0

Type specimens: paratype Pheidole terribilis: jtlc000016553; Paratype Pheidole terribilis Wilson 2003: casent0645880

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