Temnothorax nassonovi

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Temnothorax nassonovi
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Crematogastrini
Genus: Temnothorax
Species group: interruptus
Species: T. nassonovi
Binomial name
Temnothorax nassonovi
(Ruzsky, 1895)



Specimen Label


Inhabits mainly steppe and dry meadows, nests are built in soil.


The differences between this species and the similar Temnothorax argentipes are given in notes about the latter species.

Keys including this Species


Radchenko (2004) - Steppe and forest-steppe zones from the eastern Ukraine to the Pacific Ocean, Tien-Shan; absent from Japan.

Distribution based on Regional Taxon Lists

Palaearctic Region: Democratic Peoples Republic of Korea, Kyrgyzstan, Mongolia, Republic of Korea, Russian Federation (type locality), Ukraine.

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Check specimen data from AntWeb


Zryanin & Zryanina (2007) found nests of this species in soil in steppe habitats.



The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.

  • nassonovi. Leptothorax nassanowi Ruzsky, 1895: 26 (w.) RUSSIA. [Also described as new by Ruzsky, 1896: 72.] [Justified emendation of spelling to nassonovi: Ruzsky, 1896: 72.] Kupyanskaya, 1990: 143 (q.m.). Combination in Temnothorax: Bolton, 2003: 271. Status as species: Ruzsky, 1905b: 579; Karavaiev, 1916: 498; Karavaiev, 1934: 140 (redescription); Arnol'di, 1971: 1825 (in key); Tarbinsky, 1976: 94 (redescription); Arnol'di & Dlussky, 1978: 543 (in key); Radchenko, 1994b: 111 (in key); Radchenko, 1994d: 155 (in key); Radchenko, 1995d: 9; Lyu & Cho, 2003b: 272; Radchenko, 2004: 126; Radchenko, 2005b: 151; Zhou, et al. 2010: 11 (in key). Senior synonym of firssovi: Kupyanskaya, 1990: 143; Radchenko, 1995d: 9. Senior synonym of subnudus: Radchenko, 1995d: 9; Radchenko, 2005b: 151. Senior synonym of galeatus: Radchenko, 2004: 126.
  • subnudus. Leptothorax nassonovi var. subnudus Ruzsky, 1905b: 581 (w.) CHINA. Junior synonym of nassanowi: Radchenko, 1995d: 9; Radchenko, 2005b: 151.
  • galeatus. Leptothorax galeatus Wheeler, W.M. 1927e: 1 (w.) CHINA. Combination in Temnothorax: Bolton, 2003: 271. Junior synonym of nassanowi: Radchenko, 2004: 126.
  • firssovi. Leptothorax nassonovi subsp. firssovi Kuznetsov-Ugamsky, 1928b: 28, fig. 5 (w.) RUSSIA. [Misspelled as frissovi by Pisarski, 1969b: 302.] Junior synonym of nassanowi: Kupyanskaya, 1990: 143.

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


Type Material

Radchenko (2004) - Syntypes of L. nassonovi: 2 workers, vicinity of Simbirsk, vi.1894 (Zoological Museum of the Moscow State University).

The types of the var. subnudus seem to be lost. Ruzsky (1905) noted that this variety differs from the “typical” T. nassonovi by the very sparse standing hairs on the body (sometimes hairs are totally absent), by a somewhat different colour of the head dorsum, and the presence of the yellow spot at the base of the first gastral tergite. The two latter features are quite variable, but the absence of standing hairs is a quite significant character. Conspecificity (or dissimilarity) of these two forms can be definitely resolved only after obtaining an additional material from the type locality (Manchuria) of var. subnudus.

I have investigated 2 workers of Leptothorax galeatus, preserved in the collection of MCZ. One worker labelled “Peking, China, P. H. Lefivre”, “M.C.Z. Type 7 21025” was designated by A. Schulz in 1997 as the lectotype, and a second specimen from Tsinghua (for details see above) is labelled as paralectotype. Nevertheless, Wheeler (1927) described L. galeatus based only on “A single specimen from Tsinhgua (Gee)” (loc. cit., p. 2), which is the holotype according to the International Code of Zoological Nomenclature. The second specimen from Peking, designated as the lectotype, does not belong to the type series.