Pheidole excubitor

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Pheidole excubitor
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Pheidole
Species: P. excubitor
Binomial name
Pheidole excubitor
Wilson, 2003

Pheidole excubitor inb0003207483 p 1 high.jpg

Colonies nest beneath epiphytes in lowland rainforest (Longino 1997).

Identification

See the description in the nomenclature section.

Keys including this Species

Distribution

Atlantic lowlands of Costa Rica (Longino 1997).

Distribution based on Regional Taxon Lists

Neotropical Region: Costa Rica (type locality), Mexico.

Distribution based on AntMaps

AntMapLegend.png

Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Worker

Minor

Nomenclature

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

  • excubitor. Pheidole excubitor Wilson, 2003: 687, figs. (s.w.) COSTA RICA.

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

Description

DIAGNOSIS A large, striking, bicolored member ofthe tristis group, with both major and minor possessing short, sparse, erect pilosity and a prominent humerus that rises far above the relatively flat promesonotum in dorsal-oblique view. Mesonotal convexity greatly reduced in major and absent in minor. In both castes, postpetiolar node seen from above bell-shaped, and prominent rounded postpetiolar process present.

Similar to Pheidole alpinensis, Pheidole exarata, Pheidole germaini, Pheidole grandinodus, Pheidole obrima, Pheidole rogeri, Pheidole severini, Pheidole stulta, Pheidole tristis and Pheidole zoster, differing in many details of body form, sculpturing, and pilosity as illustrated, and in color.

MEASUREMENTS (mm) Holotype major: HW 1.56, HL 1.74, SL 0.84, EL 0.20, PW 0.80. Paratype minor: HW 0.70, HL 0.74, SL 0.76, EL 0.16, PW 0.46.

COLOR Major: waist and gaster blackish brown, contrasting with the yellowish red of the remainder of the body; appendages a darker shade of reddish yellow.

Minor: gaster medium brown, contrasting with the reddish yellow ofthe rest ofthe body and appendages.


Pheidole excubitor Wilson 2003.jpg

Figure. Upper: holotype, major. Lower: paratype, minor. Scale bars = 1 mm.

Type Material

COSTA RICA: La Selva Biological Station, near Pueblo Nuevo, Heredia, 150 m, col. John T. Longino. Instituto Nacional de Biodiversidad

Etymology

L excubitor, guard, sentinel.

References