Myrmecina guangxiensis

Specimens of this ant have been collected from litter samples in forest habitats.

Identification
Zhou (2001) - Resembles Myrmecina taiwana, but differs from the latter in propodeal spines triangular, broad at base, straight backward, not curved upward 1 head much smaller (HL 0.63~0.65, HW 63~63 in the latter); petiolar node much lower and narrower (PL 0.23, PH 0.24~0.25 in the latter).

Distribution based on Regional Taxon Lists
Palaearctic Region: China, Vietnam.

Biology
Myrmecina guangxiensis has been collected from leaf litter in rain forest, secondary forest and limestone forest.

Nomenclature

 *  guangxiensis. Myrmecina guangxiensis Zhou, 2001b: 139, 237, figs. 275, 276 (w.) CHINA.

Worker
Holotype: TL 2.5, HL 0.56, HW 0.55, CI 98, SL 0.46, SI 83, PW 0.40, AL 0.70, PL 0.17, PH 0.17, DPW 0.16, PPH 0.18, PPW 0.22.

Head slightly longer than broad, with convex sides and slightly concave occipital border. Anterior clypeal border slightly concave, median tooth low, indistinct. Mandible with apical and preapical teeth, followed by 5-6 indistinct denticles. Antennal scapes not reaching to occipital corners; ratio of length from 8th to 12th segments in: 2 : 2 : 5 : 6 : 19, terminal segment 1.7 X as long as broad. Eyes small, situated in front of the midlength of the sides of head. Promesonotum slightly convex, teeth of anterolateral corners of propodeum low and indistinct, rounded at tip; propodeal spines triangular, broad at base, straight backward and not curved upward.

Mandibles and middle of clypeus smooth and shining; dorsum of head with longitudinal striations in the middle, sides irregularly striate, occipital corners reticulate with large meshes; dorsum of alitrunk with 2 straight longitudinal striations in the middle, laters irregularly striate; petiole and postpetiole shagreen; gaster smooth and shining. Erect hairs abundant, the longest hair on head 0.08mm, on alitrunk 0.12mm, on petiole 0.15mm.

Color reddish brown.

Paratype: TL 2.6, HL 0.56, HW 0.55, CI 98, SL 0.46, SI 83, PW 0.41, AL 0.72, PL 0.18, PH 0.18, DPW 0.17, PPH 0.20, PPW 0.23.

Type Material
Holotype worker, Huashuichong Natural Reserve, Hezhou City, Guangxi, 1.IX.1998, Shanyi Zhou leg. Paratype 1 worker, Da Ping Shan Natural Reserve, 18.IX.1998, John. R. Fellowes leg.

References based on Global Ant Biodiversity Informatics

 * Fontanilla A. M., A. Nakamura, Z. Xu, M. Cao, R. L. Kitching, Y. Tang, and C. J. Burwell. 2019. Taxonomic and functional ant diversity along tropical, subtropical, and subalpine elevational transects in southwest China. Insects 10, 128; doi:10.3390/insects10050128
 * Guénard B., and R. R. Dunn. 2012. A checklist of the ants of China. Zootaxa 3558: 1-77.
 * Liu C, B. Guénard, F Hita Garcia, S. Yamane, B. Blanchard, and E. Economo. New records of ant species from Yunnan, China. Submitted to Zookeys
 * Zhou Shanyi, Jianhua Huang, and Libin Ma. 2008. Two new species of the ant genus Myrmecina (Hymenoptera; Formicidae), with a key to chinense species. Sociobiology 52(2): 283-291.