Messor platyceras

Messor platyceras
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Hymenoptera
Family:	Formicidae
Subfamily:	Myrmicinae
Tribe:	Stenammini
Genus:	Messor
Species:	M. platyceras
Binomial name
Messor platyceras Crawley, 1920
Synonyms
Messor platyceras rubella Crawley, 1920

Distribution

Distribution based on Regional Taxon Lists

Palaearctic Region: Iran (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.

• platyceras. Messor platyceras Crawley, 1920a: 163, pl. 5, figs. 3, 3a (s.w.) IRAN.
  • Type-material: syntype workers (number not stated).
  • Type-locality: Iran (“NW Persia”): no. 50 (W.E. Evans).
  • Type-depository: BMNH (perhaps also OXUM).
  • Subspecies of clivorum: Emery, 1921b: 210 (footnote).
  • Subspecies of structor: Bolton, 1995b: 256; Paknia, et al. 2008: 155.
  • Status as species: Khalili-Moghadam, et al. 2019: 173.
  • Senior synonym of rubella: Khalili-Moghadam, et al. 2019: 173.
  • Distribution: Iran.
• rubella. Messor platyceras var. rubella Crawley, 1920a: 164 (s.w.m.) IRAN.
  • Type-material: syntype workers (number not stated), 1 syntype male.
  • Type-locality: Iran (“NW Persia”): 4000 ft, 1919 (P.A. Buxton).
  • Type-depository: BMNH (perhaps also OXUM).
  • Junior synonym of clivorum: Emery, 1921b: 210 (footnote); Bolton, 1995b: 256 (error).
  • Junior synonym of structor: Dlussky, Soyunov & Zabelin, 1990: 224; Bolton, 1995b: 257; Radchenko, 2016: 171.
  • Junior synonym of platyceras: Khalili-Moghadam, et al. 2019: 173.

Taxonomic Notes

Khalili-Moghadam et al. (2019) - Based solely on the original description, EMERY (1921) placed Messor platyceras CRAWLEY, 1920 as a subspecies of Messor structor (LATREILLE, 1798). This point of view was accepted by BOLTON (1995). In their revision of the Messor structor group, STEINER et al. (2018) commented regarding M. platyceras and its variety that both taxa “do not fit morphologically either of the two species occurring closest to Iran, M. muticus and Lineage 7.” and concluded that both of CRAWLEY's taxa were “not relevant to identifying names for any of the species characterized here”. The location of the types is unknown, but CRAWLEY (1920) well characterized M. platyceras by the following combination of characters: first segment of funiculus longer than 2nd, flattened so as to be twice as long as broad with parallel sides, and much wider than 2nd segment when viewed on its flat side (Figs 8, 9), strong body sculpture (Figs 3-6), and base of gaster longitudinally striate for a short distance, the rest smooth and shining (Fig. 7). This combination of characters is unique within the Messor structor group, especially the distinctly striate base of the gaster in combination with the elongate and flattened first segment of the funiculus. This set of characters was observed in several of the samples noted above, and we concluded that they belong to this forgotten taxon. The location of the types of M. platyceras is unknown, but the type locality (NW Iran) and the unique set of characters led us to infer that Messor platyceras is a good species from the Messor structor group. The samples examined indicated that there were workers in a single nest with an almost completely black body and with a partly reddish mesosoma. We therefore concluded that Messor platyceras var. rubella was only an infraspecific colour variation.

References

• Bolton, B. 1995b. A new general catalogue of the ants of the world. Cambridge, Mass.: Harvard University Press, 504 pp. (page 256, Subspecies of structor)
• Borowiec, L. 2014. Catalogue of ants of Europe, the Mediterranean Basin and adjacent regions (Hymenoptera: Formicidae). Genus (Wroclaw) 25(1-2): 1-340.
• Crawley, W. C. 1920a. Ants from Mesopotamia and north-west Persia. Entomol. Rec. J. Var. 32: 162-166. (page 163, pl. 5, fig. 3 soldier, worker described)
• Emery, C. 1921b. Formiche raccolte a Budrum (Anatolia) da Raffaele Varriale, Cap. medico nella R. Marina. Ann. Mus. Civ. Stor. Nat. "Giacomo Doria" 49[=(3)(9): 208-218 (page 210, Variety of clivorum)
• Khalini-Moghadam, A., Borowiec, L., Nemati, A. 2019. New records of ants (Hymenoptera: Formicidae) from the Chaharmahal va Bakhtiari Province of Iran with taxonomic comments. Polish Journal of Entomology 88: 163–182 (DOI 10.2478/pjen-2019-0013).