Pheidole jacobsoni

Pheidole jacobsoni
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Hymenoptera
Family:	Formicidae
Subfamily:	Myrmicinae
Tribe:	Attini
Genus:	Pheidole
Species:	P. jacobsoni
Binomial name
Pheidole jacobsoni Forel, 1911 Specimen Labels
Synonyms
Pheidole orophila Eguchi, 2001

Identification

Keys including this Species

• Key to Pheidole majors and minors of Borneo
• Key to Pheidole majors of Borneo
• Key to Pheidole minors of Borneo

Distribution

Distribution based on Regional Taxon Lists

Indo-Australian Region: Borneo, Indonesia (type locality), Malaysia, Philippines.
Oriental Region: Thailand.

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.

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.

Castes

.	Owned by Museum of Comparative Zoology.

Images from AntWeb

Lectotype of Pheidole jacobsoni. Worker (major/soldier). Specimen code casent0907909. Photographer Will Ericson, uploaded by California Academy of Sciences.	Owned by MHNG, Geneva, Switzerland.

Paralectotype of Pheidole jacobsoni. Worker. Specimen code casent0907910. Photographer Will Ericson, uploaded by California Academy of Sciences.	Owned by MHNG, Geneva, Switzerland.

Type of unavailable quadrinomial: Pheidole javana jacobsoni taipingensis. Worker (major/soldier). Specimen code casent0907911. Photographer Will Ericson, uploaded by California Academy of Sciences.	Owned by MHNG, Geneva, Switzerland.

Type of unavailable quadrinomial: Pheidole javana jacobsoni taipingensis. Worker. Specimen code casent0907912. Photographer Will Ericson, uploaded by California Academy of Sciences.	Owned by MHNG, Geneva, Switzerland.

Not Provided. Worker. Specimen code casent0284075. Photographer Adam Lazarus, uploaded by California Academy of Sciences.	Owned by EPEC.

Nomenclature

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

• jacobsoni. Pheidole javana subsp. jacobsoni Forel, 1911b: 203 (s.w.q.m.) INDONESIA (Java). Subspecies of fervens: Bolton, 1995b: 323. Raised to species, senior synonym of orophila and material of the unavailable name taipingensis referred here: Eguchi, 2004: 200.
• orophila. Pheidole orophila Eguchi, 2001b: 85, figs. 32, 62 (s.w.) WEST MALAYSIA. Junior synonym of jacobsoni: Eguchi, 2004: 200.

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

Type Material

Pheidole orophila (Eguchi 2001) - Holotype Major, colony: Eg00-WM-001, Cameron Highlands (ca. 1500 malt.), W. Malaysia (Southern Malay Peninsula), K. Eguchi leg., 2000, deposited in Forest Research Institute Malaysia, Kepong. Paratypes 14 majors and 15 minors from the same colony to which the holotype belongs, deposited in The Natural History Museum, FRIM, Museum Brunei, Museo Civico di Storia Naturale, Genoa, Museum of Comparative Zoology, Musee d'Histoire Naturelle Genève, Museo Civico di Storia Naturale, Milano, Naturhistorisches Museum Wien, Vienna and Universiti Malaysia Sabah.

References

• Eguchi, K. 2001b. A revision of the Bornean species of the ant genus Pheidole (Insecta: Hymenoptera: Formicidae: Myrmicinae). Tropics Monogr. Ser. 2: 1-154.

• Eguchi, K. 2004. Taxonomic revision of two wide-ranging Asian ants, Pheidole fervens and P. indica (Insecta: Hymenoptera, Formicidae), and related species. Ann. Naturhist. Mus. Wien B. Bot. Zool. 105(B): 189-209 (page 200, figs. 4a-h, 7f; Tab.1, major, minor worker described; raised to species; senior synonym of orphila)

• Forel, A. 1911b. Ameisen aus Java beobachtet und gesammelt von Herrn Edward Jacobson. II. Theil. Notes Leyden Mus. 33: 193-218 (page 203, soldier, worker, queen, male described)
• General, D.E.M. 2021. A preliminary checklist of the ants (Hymenoptera: Formicidae) of the Mt. Pantaron Range, Bukidnon Province, Mindanao Island, Philippines. Halteres, 12:4-14 (doi:10.5281/ZENODO.5371745).
• Khachonpisitsak, S., Yamane, S., Sriwichai, P., Jaitrong, W. 2020. An updated checklist of the ants of Thailand (Hymenoptera, Formicidae). ZooKeys 998, 1–182 (doi:10.3897/zookeys.998.54902).

References based on Global Ant Biodiversity Informatics

• Chapman, J. W., and Capco, S. R. 1951. Check list of the ants (Hymenoptera: Formicidae) of Asia. Monogr. Inst. Sci. Technol. Manila 1: 1-327
• Eguchi K. 2001. A revision of the Bornean species of the ant genus Pheidole (Insecta: Hymenoptera: Formicidae: Myrmicinae). Tropics Monograph Series 2: 1-154.
• Eguchi K. 2003. A study on the male genitalia of some Asian species of Pheidole (Hymenoptera, Formicidae, Myrmicinae). Sociobiology 41: 317-355.
• Eguchi K. 2004. Taxonomic revision of two wide-ranging Asian ants, Pheidole fervens and P. indica (Insecta: Hymenoptera, Formicidae), and related species. Annalen des Naturhistorischen Museums in Wien. B, Botanik, Zoologie 105: 189-209
• Forel A. 1911. Ameisen aus Java beobachtet und gesammelt von Herrn Edward Jacobson. II. Theil. Notes Leyden Mus. 33: 193-218.
• Forel A. 1913k. Wissenschaftliche Ergebnisse einer Forschungsreise nach Ostindien ausgeführt im Auftrage der Kgl. Preuss. Akademie der Wissenschaften zu Berlin von H. v. Buttel-Reepen. II. Ameisen aus Sumatra, Java, Malacca und Ceylon. Gesammelt von Herrn Prof. Dr. v. Buttel-Reepen in den Jahren 1911-1912. Zoologische Jahrbücher. Abteilung für Systematik, Geographie und Biologie der Tiere 36:1-148.
• Jaitrong W.; Nabhitabhata, J. 2005. A list of known ant species of Thailand. The Thailand Natural History Museum Journal 1(1): 9-54.
• Pfeiffer M.; Mezger, D.; Hosoishi, S.; Bakhtiar, E. Y.; Kohout, R. J. 2011. The Formicidae of Borneo (Insecta: Hymenoptera): a preliminary species list. Asian Myrmecology 4:9-58