Pheidole inversa

AntWiki: The Ants --- Online
Pheidole inversa
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Pheidole
Species: P. inversa
Binomial name
Pheidole inversa
Forel, 1901

Pheidole inversa casent0901580 p 1 high.jpg

Pheidole inversa casent0901580 d 1 high.jpg

Specimen Labels

Nothing is known about the biology of inversa.

Identification

See the description in the nomenclature section.

Keys including this Species

Distribution

Northern lowland Colombia and Curaçao. (Wilson 2003)

Latitudinal Distribution Pattern

Latitudinal Range: 10.964° to -4.1°.

 
North
Temperate
North
Subtropical
Tropical South
Subtropical
South
Temperate

Distribution based on Regional Taxon Lists

Neotropical Region: Colombia (type locality).

Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Countries Occupied

Number of countries occupied by this species based on AntWiki Regional Taxon Lists. In general, fewer countries occupied indicates a narrower range, while more countries indicates a more widespread species.
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Estimated Abundance

Relative abundance based on number of AntMaps records per species (this species within the purple bar). Fewer records (to the left) indicates a less abundant/encountered species while more records (to the right) indicates more abundant/encountered species.
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Biology

Castes

Worker

Minor

Images from AntWeb

Pheidole inversa casent0904319 h 1 high.jpgPheidole inversa casent0904319 p 1 high.jpgPheidole inversa casent0904319 d 1 high.jpgPheidole inversa casent0904319 l 1 high.jpg
Syntype of Pheidole radoszkowskii inversaWorker. Specimen code casent0904319. Photographer Z. Lieberman, uploaded by California Academy of Sciences. Owned by MSNG, Genoa, Italy.
Pheidole inversa casent0908103 h 1 high.jpgPheidole inversa casent0908103 p 1 high.jpgPheidole inversa casent0908103 d 1 high.jpgPheidole inversa casent0908103 l 1 high.jpg
Syntype of Pheidole inversaWorker. Specimen code casent0908103. Photographer Will Ericson, uploaded by California Academy of Sciences. Owned by MHNG, Geneva, Switzerland.

Major

Images from AntWeb

Pheidole inversa casent0908102 h 1 high.jpgPheidole inversa casent0908102 p 1 high.jpgPheidole inversa casent0908102 d 1 high.jpgPheidole inversa casent0908102 l 1 high.jpg
Syntype of Pheidole inversaWorker (major/soldier). Specimen code casent0908102. Photographer Will Ericson, uploaded by California Academy of Sciences. Owned by MHNG, Geneva, Switzerland.
Pheidole inversa casent0904318 h 1 high.jpgPheidole inversa casent0904318 h 2 high.jpgPheidole inversa casent0904318 p 1 high.jpgPheidole inversa casent0904318 d 1 high.jpgPheidole inversa casent0904318 l 1 high.jpg
Syntype of Pheidole radoszkowskii inversaWorker (major/soldier). Specimen code casent0904318. Photographer Z. Lieberman, uploaded by California Academy of Sciences. Owned by MSNG, Genoa, Italy.

Nomenclature

The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.

  • inversa. Pheidole radoszkowskii var. inversa Forel, 1901e: 363 (s.w.) COLOMBIA. Raised to species: Wilson, 2003: 197.

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

Description

From Wilson (2003): A small reddish brown, nearly hairless member of the diligens group, close to Pheidole bruesi of Grenada, Pheidole diligens and Pheidole laidlowi of Brazil, and the widespread and very abundant Neotropical Pheidole radoszkowskii and Pheidole triconstricta. P. inversa is distinguished from all these species by the following combination of traits.

Major: anterior two-thirds of head longitudinally carinulate, posterior one-third smooth and shiny; cephalic rugoreticulum absent; petiolar node relatively thick in side view; anterior three-fourths of median strip of first gastral tergite shagreened and opaque. Minor: posterior two-thirds of median strip of first gastral tergite shagreened and opaque.

This form and Pheidole bruesi, as well as Pheidole diligens, may prove to fall within the substantial variation of Pheidole radoszkowskii and thus become synonymous.

MEASUREMENTS (mm) Lectotype major: HW 1.02, HL 1.08, SL 0.80, EL 0.20, PW 0.50. Paralectotype minor: HW 0.56, HL 0.64, SL 0.76, EL 0.16, PW 0.38.

COLOR Major: body light reddish brown; appendages brownish yellow.

Minor: concolorous light reddish brown.


Pheidole inversa Wilson 2003.jpg

Figure. Upper: lectotype, major (upper mesosomal profile, lectotype; lower mesosomal profile, major from Curaçao). Lower: paralectotype, minor. Scale bars = 1 mm.

Syntype Specimen Labels

Type Material

COLOMBIA: Barranquilla. Lectotype and paralectotype: National Museum of Natural History Paralectotypes: Musee d'Histoire Naturelle Genève - as reported in Wilson (2003)

Etymology

L inversa, turned upside down, allusion unknown. (Wilson 2003)

References

References based on Global Ant Biodiversity Informatics

  • Kempf, W.W. 1972. Catalago abreviado das formigas da regiao Neotropical (Hym. Formicidae) Studia Entomologica 15(1-4).