Tetramorium yulongense

Nothing is known about the biology of .

Identification
Xu and Zheng (1994) - The closest relative of T. yulongense is Tetramorium caespitum, but the former with dense punctulations between the longitudinal rugae on the dorsum of the head, lateral surfaces of pronotum without strong longitudinal rugae, metapleural lobes rounded apically.

Distribution
Yunnan Province, China.

Distribution based on Regional Taxon Lists
Palaearctic Region: China.

Nomenclature

 *  yulongense. Tetramorium yulongense Xu & Zheng, 1994: 288, figs. 6, 12 (w.) CHINA.

Worker
Holotype. TL 2.9, HL 0.79, HW 0.71, CI 90, SL 0.60, SI 84, PW 0.50, AL 0.93, MDE 0.15.

Mandibles striate. Median portion of clypeus roundly and transversely convex, anterior margin slightly convex; Frontal carinae short, terminating at the level of the eyes. Scrobes absent. Occipital margin straight. In dorsal view the pronotal corners bluntly angled. Metanotal groove depressed, on the lateral surfaces. Propodeal spines short, elevated, acute apically. Metapleural lobes rounded. Petiole in profile view with a small antero-ventral tooth-like process, the node with its anterior and posterior faces narrowing above, dorsal surface feebly convex, the posterodorsal angle rounded. In dorsal view the node broader than long. Median portion of clypeus with several fine longitudinal rugae, median longitudinal carina distinct. Dorsum of head with numerous fine longitudinal rugae, dense punctulations are present between the rugae. Dorsum of alitrunk coarsely retictilate-rugulose, spaces between the reticula with fine punctulations. The lateral surfaces of alitrunk and the pedicel segments densely punctulate, punctulations on pedicel segments are smaller. The rnedian portions of dorsum of the nodes smooth. Gaster unsculptured, shining. Dorsal surfaces of head and body with abundant acute erect or suberect hairs. Numerous short subdecumbent hairs are- present on the dorsal surfaces of scapes and hind tibiae. Head and alitrunk blackish brown; tarsi yellowish brown; pedicel segments and gaster black.

Paratypes, TL 2.7-3.0, HL 0.70-0.83, HW 0.63-0.71, CI 85-93, SL 0.50-0.60, SI 77-84, PW 0.44-0.50, AL 0.80-0.93, MDE 0.13-0.16 (8 measured). As holotype.

Type Material
Holotype worker, Lijiang Co. (26°55'N, 100°17'E). Yunnan Prov., 2400m, 8-X-1991, No. A91-930 (Xu Zhenghui). Paratypes: 11 workers, with the same data as holotype.

The type specimens are deposited in the Insect Collection, Institute of Zoology, Shaanxi Normal University, Xi'an, China.

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.
 * Xu Z. and Zheng Z. 1994. New species and new record species of the genus Tetramorium Mayr (Hymenoptera: Formicidae) from southwestern China. Entomotaxonomia 16(4): 285-290.