Tetramorium cyclolobium

Tetramorium cyclolobium
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Hymenoptera
Family:	Formicidae
Subfamily:	Myrmicinae
Tribe:	Crematogastrini
Genus:	Tetramorium
Species:	T. cyclolobium
Binomial name
Tetramorium cyclolobium Xu, Z. & Zheng, 1994

Nothing is known about the biology of Tetramorium cyclolobium.

Identification

Xu and Zheng (1994) - The closest relative of T. cyclolobium is Tetramorium walshi, but in the former, the anterior face of the petiole node and the dorsum of the peduncle arc connected by an arched surface instead of a deep concave, the meta pleural lobes rounded apically.

Distribution

Guangxi Province, China.

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.

Nomenclature

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

• cyclolobium. Tetramorium cyclolobium Xu & Zheng, 1994: 287, figs. 4, 10 (w.) 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 1.9, HL 0.56, HW 0.53, CI 93, SL 0.35, SI 67, PW 0.43, AL 0.58, MDE 0.14.

Mandibles weakly striate. Anterior margin of clypeus entire and straight, with a narrow flange. Frontal carinae: long and strong, extending back well beyond the eyes, and then curved down, forming the upper and posterior margins of the scrobes. Scrobes deeply depressed, with a fine longitudinal carina. Occipital margin evenly convex. Alitrunk in dorsal view short and broad, the pronotal corners angled. Propodeal spines short and acute, straight. Metapleural lobes broad, rounded apically. Petiole in profile view with the node anteroposteriorly compressed, the anterior face of the node and the dorsum of the peduncle are connected by an arched surface, in dorsal view the node transverse. Median portion of clypeus with several fine longitudinal rugae and a strong longitudinal carina. Head, alitrunk and pedicel segments densely reticulate-rugulose. Dorsum of head with conspicuous median longitudinal carina. Caster unsculptured, the first tergite with very fine basal striates. Dorsal surfaces of head and body uniformly clothed with a dense mat of pale trifid hairs, head also with a few elongate simple hairs which longer than the trifid ones. Lateral surfaces of alitrunk without hairs. Numerous short suberect hairs are present on the dorsal surfaces of scapes. Hind tibiae with dense trifid hairs on their dorsal surfaces. Body in colour yellowish brown, dorsum of head, and gaster blackish brown.

Paratypes. TL 1.9-2.1, HL 0.55·0.59, HW 0.53-0.56, CI 93-98, SL 0.34-0.38, SI 63-67, PW 0.40·0.44, AL 0.55-0.60, MDE 0.13-0.14 (8 measured). As hplotype, but in some specimens striates on mandibles arc conspicuous.

Type Material

Holotype: worker, Cuilin (25°l7’N, 110°6’E), Guangxi Prov. 260m, 16-VIII-1992. No. A92-301 (Xu Zhenghui). Paratypes: 4 workers, with the same data as holotype; 4 workers, Nanning, Cuangxi Prov., 210m, 3-IX-1991 (Xu Zhenghui).

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

References

• Xu, Z.; Zheng, Z. 1994. New species and new record species of the genus Tetramorium Mayr (Hymenoptera: Formicidae) from southwestern China. Entomotaxonomia 16: 285-290 (page 287, figs. 4, 10 worker described)

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.
• Li Q., B. D. Hoffmann, Z. X. Lu, and Y. Q. Chen. 2017. Ants show that the conservation potential of afforestation efforts in Chinese valley-type savanna is dependent upon the afforestation method. Journal of Insect Conservation DOI 10.1007/s10841-017-0005-0
• Li Qiao, Chen You-qing, Guo Xiao, Duan Yan, Chen Yan-lin, and Xu Zheng-hui. 2007. Diversity of ants in differents habitats in Yuanmou arid-hot valley, Yunnan. Journal of Fujian College of Forestry 27(3): 272-277.
• 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.