Pheidole inermis

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Pheidole inermis
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Pheidole
Species: P. inermis
Binomial name
Pheidole inermis
Mayr, 1870

Pheidole inermis casent0601290 profile 1.jpg

Pheidole inermis casent0601290 dorsal 1.jpg

Specimen labels

The species has been collected in montane forest, in one case (Mina El Mochito, Honduras) from rotting wood. (Wilson 2003)


See the description in the nomenclature section.

Keys including this Species


I have verified series of inermis from Veracruz, Mexico (Cuichapa, 1600 m); Honduras (Mina El Mochito, Santa Barbara,1040 m; Lago Yojoa, Cortes, 700 m); and Nicaragua (Matagalpa, 1200+ m). (Wilson 2003)

Distribution based on Regional Taxon Lists

Neotropical Region: Guatemala, Honduras, Mexico (type locality), Nicaragua.

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb







The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.

  • inermis. Pheidole inermis Mayr, 1870b: 984 (s.w.) MEXICO. See also: Wilson, 2003: 146.

Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.


From Wilson (2003): Distinguished from all other members of the biconstricta group and most of Pheidole species by the absence of propodeal spines in the major and minor. In full-face view, occipital cleft of major relatively shallow, occipital lobes tending toward subangulate.

MEASUREMENTS (mm) Lectotype major: HW 1.84, HL 1.72, SL 1.06, EL 0.24, PW 0.84. Paralectotype minor: HW 0.80, HL 0.94, SL 1.10, EL 0.14, PW 0.54.

COLOR Major: most of body light reddish brown, with mandibles, postpetiole, and gaster medium reddish brown.

Minor: gaster medium brown, rest of body light reddish brown.

Pheidole inermis Wilson 2003.jpg

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

Lectotype Specimen Labels

Type Material

MEXICO (no further data; col. Edward Norton, 1860s). Naturhistorisches Museum Wien, Vienna - as reported in Wilson (2003)


L inermis, unarmed, referring to the absence of propodeal spines. (Wilson 2003)