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Pheidole dwyeri
| Pheidole dwyeri | |
|---|---|
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Myrmicinae |
| Tribe: | Attini |
| Genus: | Pheidole |
| Species: | P. dwyeri |
| Binomial name | |
| Pheidole dwyeri Gregg, 1969
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Nothing is known about the biology of dwyeri.
Identification
See the description in the nomenclature section.
Keys including this Species
Distribution
Only known from the type locality.
Latitudinal Distribution Pattern
Latitudinal Range: 21.619172° to 19.5°.
| North Temperate |
North Subtropical |
Tropical | South Subtropical |
South Temperate |
- Source: AntMaps
Distribution based on Regional Taxon Lists
Neotropical Region: Mexico (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
Worker
Minor
Images from AntWeb
   
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| Paratype of Pheidole dwyeri. Worker. Specimen code casent0901587. Photographer Will Ericson, uploaded by California Academy of Sciences. | Owned by NHMUK, London, UK. |
   
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| Paratype. Worker. Specimen code fmnhins0000083048. Photographer Gracen Brilmyer, uploaded by Field Museum. | Owned by FMNH. |
Major
   
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Phylogeny
Varela-Hernández & Riquelme (2024), Fig. 3. The phylogenetic status of Pheidole praehistorica among fossil and extant congeners inferred from the list of characters (Supp. file 1: Table S1) and the data matrix (Supp. file 1: Table S2), shows the twenty-eight morphological characters to construct the most parsimonious tree. The numbers above the white and black dots represent morphological characters, and the numbers below represent the character encoding. Black dots represent synapomorphies, and white dots represent homoplasies. † represents fossil species from Dominican and Mexican amber. Consistency index = 0.52; retention index = 0.65.
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Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- dwyeri. Pheidole dwyeri Gregg, 1969: 97, fig. 2 (s.w.) MEXICO. See also: Wilson, 2003: 541.
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 A very distinctive species in the small group of Pheidole that possess 4-segmented antennal clubs.
Major: very large; head disproportionately large, with Head Width more than 2.5X Pronotal Width; head tapered strongly toward occiput in side view; in full-face view, occiput deeply and subangularly concave; median ocellus present; small patch of rugoreticulum present laterad to each antennal fossa.
Minor: propodeal spine of medium length; occiput in full-face view broad and weakly concave.
MEASUREMENTS (mm) Paratype major: HW 2.56, HL 2.58, SL 1.24, EL 0.24, PW 1.00. Paratype minor: HW 0.66, HL 0.74, SL 0.76, EL 0.12, PW 0.42.
Figure. Upper: paratype, major. Lower: paratype, minor. Scale bars = 1 mm.
Type Material
MEXICO: Isla Maria Cleofas, Las Tres Marias, Nayarit, col. Roy R. Snelling. Los Angeles County Museum of Natural History, Museum of Comparative Zoology and American Museum of Natural History - as reported in Wilson (2003)
Etymology
Named after Richard F. Dwyer, who sponsored the Snelling collecting tour of Las Tres Marias. (Wilson 2003)
References
- Wilson, E. O. 2003. Pheidole in the New World: A dominant, hyperdiverse ant genus. Harvard University Press, Cambridge, MA. (page 541, fig. major, minor described)
- Gregg, R. E. 1969b. New species of Pheidole from Pacific Coast islands (Hymenoptera: Formicidae). Entomol. News 80: 93-101 (page 97, fig. 2 soldier, worker described)
- Varela-Hernández, F., Medel-Zosayas, B., Martínez-Luque, E.O., Jones, R.W., De la Mora, A. 2020. Biodiversity in central Mexico: Assessment of ants in a convergent region. Southwestern Entomologist 454: 673-686.
- Varela-Hernández, F., Riquelme, F. 2024. Pheidole praehistorica sp. nov., a new addition to spiny ants of the genus Pheidole Westwood, 1839 (Formicidae, Myrmicinae) from Oligo–Miocene Mexican amber. European Journal of Taxonomy 968: 86-97 (doi:10.5852/ejt.2024.968.2719).
- Vázquez-Franco, C.M., Morrone, J.J. 2022. The genus Pheidole (Hymenoptera: Formicidae: Myrmicinae) in Puebla, Mexico. Revista Mexicana de Biodiversidad 93: e933820 (doi:10.22201/ib.20078706e.2022.93.3820).
References based on Global Ant Biodiversity Informatics
- Dattilo W. et al. 2019. MEXICO ANTS: incidence and abundance along the Nearctic-Neotropical interface. Ecology https://doi.org/10.1002/ecy.2944
- Fernandes, P.R. XXXX. Los hormigas del suelo en Mexico: Diversidad, distribucion e importancia (Hymenoptera: Formicidae).
- Field Museum Collection, Chicago, Illinois (C. Moreau)
- Kempf, W.W. 1972. Catalago abreviado das formigas da regiao Neotropical (Hym. Formicidae) Studia Entomologica 15(1-4).
- Vásquez-Bolaños M. 2011. Lista de especies de hormigas (Hymenoptera: Formicidae) para México. Dugesiana 18: 95-133
- Wilson, E.O. 2003. Pheidole in the New World: A Dominant, Hyperdiverse Genus. Harvard University Press