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Pheidole senilis
| Pheidole senilis | |
|---|---|
| |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Myrmicinae |
| Tribe: | Attini |
| Genus: | Pheidole |
| Species: | P. senilis |
| Binomial name | |
| Pheidole senilis Santschi, 1929
| |
The Agua Funda colony was collected in rotten wood. (Wilson 2003)
Identification
See the description in the nomenclature section.
Keys including this Species
Distribution
Minas Gerais and São Paulo states, Brazil. (Wilson 2003)
Distribution based on Regional Taxon Lists
Neotropical Region: Brazil (type locality).
Distribution based on AntMaps
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
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- senilis. Pheidole hetschkoi var. senilis Santschi, 1929d: 289 (w.) BRAZIL. Raised to species: Wilson, 2003: 752.
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): DIAGNOSIS Similar to Pheidole aper, Pheidole bambusarum, Pheidole brevicona, Pheidole dyctiota, Pheidole laeviventris, Pheidole lutzi, Pheidole risii, Pheidole rugatula, Pheidole sigillata, Pheidole trachyderma and Pheidole traini, differing as follows.
Major: very large; in full-face view, occiput covered by faint oblique carinulae that originate on midline and turn outward; most of vertex and sides of head rugoreticulate, frontal lobes carinulate; in full-face view, semicircular carinulae of antennal fossa are sharply demarcated from the carinulae that cross over anteriorly to the lateral wings of the clypeus; pronotal dorsum loosely rugoreticulate, with sides and lower half of the mesopleuron smooth; postpetiole 2X broader than petiole, and spinose.
Minor: posterior dorsum and sides of head “tiger-striped” with semicircular carinulae; humeri rugoreticulate; occiput narrow, with nuchal collar.
MEASUREMENTS (mm) Major (Agua Funda, São Paulo): HW 2.20, HL 2.34, SL 1.00, EL 0.24, PW 1.04. Lectotype minor: HW 0.80, HL 0.84, SL 0.94, EL 0.16, PW 0.56.
COLOR Major and minor: body medium reddish brown, appendages reddish yellow.
Figure. Upper: major (Agua Funda, near São Funda, São Paulo, col. W. L. Brown; associated with minor compared with lectotype minor). Lower: minor (Agua Funda, São Paulo; compared with lectotype minor). Scale bars = 1 mm.
Type Material
Passa Quatro, Minas Gerais, Brazil; no majors were in type series. Naturhistorisches Museum, Basel - as reported in Wilson (2003)
Etymology
L senilis, old, aged, probably alluding to the wrinkly head surface. (Wilson 2003)
References
- Wilson, E. O. 2003. Pheidole in the New World: A dominant, hyperdiverse ant genus. Harvard University Press, Cambridge, MA. (page 752, fig. major, minor described, Raised to species: new status)
- Heterick, B.E. 2022. A guide to the ants of Western Australia. Part II: Distribution and biology. Records of the Western Australian Museum, supplement 86: 247-510 (doi:10.18195/issn.0313-122x.86.2022.247-510).
- Santschi, F. 1929d. Nouvelles fourmis de la République Argentine et du Brésil. An. Soc. Cient. Argent. 107: 273-316 (page 289, worker described)
References based on Global Ant Biodiversity Informatics
- Fleck M. D., E. Bisognin Cantarelli, and F. Granzotto. 2015. Register of new species of ants (Hymenoptera: Formicidae) in Rio Grande do Sul state. Ciencia Florestal, Santa Maria 25(2): 491-499.
- Kempf, W.W. 1972. Catalago abreviado das formigas da regiao Neotropical (Hym. Formicidae) Studia Entomologica 15(1-4).