Strongylognathus tylonus

Strongylognathus tylonus
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Hymenoptera
Family:	Formicidae
Subfamily:	Myrmicinae
Tribe:	Crematogastrini
Genus:	Strongylognathus
Species group:	testaceus
Species:	S. tylonus
Binomial name
Strongylognathus tylonus Wei, Xu, Z. & He, 2001

The lone type, a worker, was collected in a grassland adjacent to a river.

At a Glance

• Dulotic

Identification

Wei et al. (2001) - Resembles Strongylognathus karawajewi but mandible with four minute tuberculi on the outer margin; propodeum with a pair of very blunt dentes; subpetiolar process absent; superior surface of petiolar node straight.

Keys including this Species

• Key to Strongylognathus of China

Distribution

Distribution based on Regional Taxon Lists

Palaearctic Region: China (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.

Biology

This species is a slave-maker, but its host is unknown.

Nomenclature

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

• tylonus. Strongylognathus tylonum Wei, Xu & He, 2001: 69, figs. 1, 2 (w.) CHINA (Shaanxi).
  • Type-material: holotype worker.
  • Type-locality: China: Shaanxi Prov., Taibai County, Mt Taibai, left bank of Xushui River, 1400 m., 24.vi.1997 (C. Wei).
  • Type-depository: NSTU.
  • Status as species: Guénard & Dunn, 2012: 53; Radchenko, Zhang & Heinze, 2017: 11 (in key).
  • Distribution: China.

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

Description

Worker

(Holotype): TL 3.10, HL 1.02, HW 0.92, CI 90, SL 0.64, SI 68, PW 0.72, AL 1.00, PNL 0.58, ED 0.20.

Head rectangular, longer than broad. Occipital border broadly concave in the middle, with occipital corners somewhat elongated backwards. Mandibles falcate, without subapical teeth, but each has four minute tuberculi on outer margin. Clypeus convex and narrow, with weakly concave anterior broder. Frontal lobes weakly developed, partly covering the antennal insertions. Eyes small, situated just in the middle of the sides. Antennal scapes short, not reaching to occipital corners and antennal club 3-segmented.

Alitrunk fused, with promesonotal suture and metanotal groove unconspicuous. Propodeum with a pair of very blunt dentes.

Petiolar node cuneate, with a straight superior surface. Subpetiolar process absent. Postpetiolar node orbiculate, subequal to petiolar node and obviously lower than the petiolar one.

Gaster compressed dorsoventrally in lateral view, oval.

Body smooth and shining. Punctures very sparse. Anterior margin of clypeus, outer margins of mandibles, frontal lobes and dorsa of nodes separately possessing several long standing hairs. Hairs on alitrunk very sparse. Suberect long hairs on gaster relatively rich. Antennaw and legs with abundant pubescences. Body with sparse pubescences. Hairs golden yellow. Pubescences yellow.

Color dominantly shining yellow. Head and gaster brownish yellow.

Type Material

The type-specimens of the new species is deposited in the Insect Collection, College of Forestry, Northwest Sci-Tech University of Agriculture and Forestry.

Holotype: worker, Mt. Taibai, Taibai County, Shaanxi Province, grassland, on left bank of Xushui River, 1400 m, 24-VI-1997, coll. Wei Cong.

References

• Lapeva-Gjonova, A., Radchenko, A. 2021. Ant genus Strongylognathus (Hymenoptera, Formicidae) in Bulgaria: a preliminary review. Biodiversity Data Journal 9, e65742 (doi:10.3897/bdj.9.e65742).
• Wei, C., Xu, Z.-H.; ; He, H. 2001. A new species of the ant genus Strongylognathus Mayr (Hymenoptera: Formicidae) from Shaanxi, China. Entomotaxonomia. 23:68-70.

References based on Global Ant Biodiversity Informatics

• Guénard B., and R. R. Dunn. 2012. A checklist of the ants of China. Zootaxa 3558: 1-77.
• Huang Jian-hua, and Zhou Shan-yi. 2007. Checklist of Family Formicidae of China - Myrmicinae (Part III). (Insecta; Hymenoptera). Journal of Guangxi normal University: Natural Science Edition 25(3): 88-96.