Crematogaster jacobsoni

Crematogaster jacobsoni
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Hymenoptera
Family:	Formicidae
Subfamily:	Myrmicinae
Tribe:	Crematogastrini
Genus:	Crematogaster
Species:	C. jacobsoni
Binomial name
Crematogaster jacobsoni Forel, 1911 Specimen Labels

Identification

Hosoishi and Ogata (2012) – Examination of syntype workers in Musee d'Histoire Naturelle Genève and Naturhistorisches Museum, Basel reveals that C. jacobsoni is not similar to the C. brevis group or C. treubi group in Asia. Characteristic features include: occipital carinae developed; petiole weakly broader anteriorly, but without angular corners; postpetiole weakly bilobed with longitudinal median sulcus. This species is similar to Crematogaster semperi or Crematogaster simoni. We hereby transfer C. jacobsoni to the subgenus Crematogaster, to compare it with closely related species in this group in the future.

Distribution

Latitudinal Distribution Pattern

Latitudinal Range: -7.502778° to -7.502778°.

North Temperate	North Subtropical	Tropical	South Subtropical	South Temperate

• Source: AntMaps

Distribution based on Regional Taxon Lists

Indo-Australian Region: Indonesia (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.

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.

Nomenclature

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

• jacobsoni. Crematogaster jacobsoni Forel, 1911b: 201 (w.) INDONESIA (Java).
  • Type-material: syntype workers (number not stated).
  • Type-locality: Indonesia: Java, Semarang (E. Jacobson).
  • Type-depositories: MHNG, NHMB.
  • Combination in C. (Orthocrema): Emery, 1922e: 132;
  • combination in C. (Acrocoelia): Santschi, 1928b: 34;
  • combination in C. (Mesocrema): Santschi, 1937e: 310.
  • Status as species: Emery, 1922e: 132; Menozzi, 1935a: 112 (in key); Chapman & Capco, 1951: 98; Bolton, 1995b: 155.
  • Distribution: Indonesia (Java).

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

Type Material

Hosoishi and Ogata (2012) –Three syntype workers from INDONESIA: Semarang, Java (Musee d'Histoire Naturelle Genève) and one syntype worker (Naturhistorisches Museum, Basel) [examined].

References

• Emery, C. 1922c. Hymenoptera. Fam. Formicidae. Subfam. Myrmicinae. [part]. Genera Insectorum 174B: 95-206 (page 132, Combination in C. (Orthocrema))
• Forel, A. 1911b. Ameisen aus Java beobachtet und gesammelt von Herrn Edward Jacobson. II. Theil. Notes Leyden Mus. 33: 193-218 (page 201, worker described)
• Hosoishi, S. & Ogata, K. 2012. Revision of the Crematogaster brevis complex in Asia (Hymenoptera: Formicidae). Zootaxa. 3349:18-30.
• Santschi, F. 1937e. Contribution à l'étude des Crematogaster paléarctiques. Mém. Soc. Vaudoise Sci. Nat. 5: 295-317 (page 310, Combination in C. (Mesocrema))

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
• Forel A. 1911. Ameisen aus Java beobachtet und gesammelt von Herrn Edward Jacobson. II. Theil. Notes Leyden Mus. 33: 193-218.
• Hosoishi S. and K. Ogata. 2009. A check list of the ant genus Crematogaster in Asia (Hymenoptera: Formicidae). Bull. Inst. Trop. Agr. Kyushu Univ. 32: 43-83.
• Hosoishi S., K. Ogata. 2012. Revision of the Crematogaster brevis complex in Asia (Hymenoptera: Formicidae). Zootaxa 3349: 18-30.
• Hosoishi, S., and K. Ogata. "Revision of the Crematogaster brevis complex in Asia (Hymenoptera: Formicidae)." Zootaxa 3349 (2012): 18-30.
• Yamane S. 2013. A Review of the ant fauna of the Krakatau Islands, Indonesia. Bull. Kitakyushu Mus. Nat. Hist. Hum. Hist. Ser: A, 11: 1-66