.jpg){kind=logo}
Stenamma ailaoense
| Stenamma ailaoense | |
|---|---|
| |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Myrmicinae |
| Tribe: | Stenammini |
| Genus: | Stenamma |
| Species: | S. ailaoense |
| Binomial name | |
| Stenamma ailaoense Liu & Xu, 2011
| |
The type worker, the only specimen of this species, was collected in a soil sample from a sub-alpine moist evergreen broadleaf forest.
Identification
Liu & Xu (2011) - This new species is close to Stenamma nipponense but head and scapes comparatively longer, with CI 80 and SI 109; metanotal groove shallowly depressed; propodeal plates broader and roughly trapezoid; propodeal dorsum retirugose; head and body reddish brown.
Keys including this Species
Distribution
Yunnan 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. |
|
Biology
Castes
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- ailaoense. Stenamma ailaoense Liu, X. & Xu, 2011: 740, figs. 1-3 (w.) CHINA (Yunnan).
- Type-material: holotype worker.
- Type-locality: China: Yunnan Prov., Jingdong County, Taizhong Town, Xujiaba, Mt Ailao, 2500 m., 7.iv.2002, no.A00831 (Z. Chai).
- Type-depository: SFCY.
- Status as species: Bharti, Gul & Sharma, 2012a: 325 (in key); Guénard & Dunn, 2012: 53.
- 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 worker: HL 1.03, HW 0.83, CI 80, SL 0.90, SI 109, PW 0.60, AL 1.38, ED 0.11, PL 0.60, PH 0.28, PI 46, DPW 0.21.
In full face view, head roughly rectangular, longer than broad. Occipital margin straight, occipital corners roundly prominent, lateral sides weakly convex. Anterior margin of clypeus convex, and concave in the middle. Mandibles with 3 distinct apical teeth and followed by 8 indistinct denticles. Antennae long, 12-segmented, scapes surpassing occipital corners by 1/6 of its length, antenna! clubs 5-segmented. Eyes located before the midpoints of lateral sides of head, with 5 ommatidia in the maximum diameter.
In profile view, promesonotum high and convex, nearly arched, the middle portion relatively straight, with trace of promesonotal suture. Metanotal groove wide, but shallowly depressed. Propodeum distinctly lower than promesonotum, dorsum straight and formed a gentle slope. Propodeal spines slender, about 1/2 length of declivity. Declivity straight, about 1/2 length of dorsum. Propodeal plates broad, nearly trapezoidal, slightly shorter than propodeal spines, posterodorsal corner bluntly angled, posteroventral corner rounded. Petiole long, length: height: width = 3: 1.4: 1. Petiolar node low, shorter than anterior peduncle, and roundly prominent at top. Anteroventral corner of petiole weakly convex, anterior 2/5 of ventral face straight, posterior 3/5 depressed. Postpetiole and gaster lost.
Mandibles finely longitudinally striate. Head retirugose, but longitudinally rugose before eyes and between frontal carinae. Median portion of clypeus smooth and shining. Alitrunk retirugoe. Posterior 2/3 of pronotum with posteriorly divergent longitudinal rugae. Lateral sides of mesothorax and propodeum finely retirugose. Metapleuron with 3 coarse longitudinal rugae, interspaces smooth. Petiole with interweaved fine longitudinal rugae, and densely finely punctuate behind petiolar node. Fore coxae transversely rugose, middle and hind coxae finely reticulate.
Dorsa of head and body with sparse erect to suberect hairs and abundant decumbent pubescence. Dorsum of petiolar peduncle without erect hairs. Antennal scapes and hind tibiae with dense decumbent pubescence, but without erect hairs. Head and body reddish brown, appendages yellowish brown, eyes and masticatory margins of mandibles black.
Type Material
Holotype: worker, CHINA: Yunnan Province, Jingdong County, Taizhong Town, Xujiaba, 2500m, collected from a soil sample in the primitive sub-alpine moist evergreen broadleaf forest of Mt. Ailao, 2002. IV. 7, Zheng-Qun CHAI leg., No. A00831. Southwest Forestry University, Kunming, China
Etymology
The new species is named after the type locality Mt. Ailao in central Yunnan Province.
References
- Bharti, H., Gul, I., and Sharma, Y. P. 2012. Two new species of Stenamma (Hymenoptera: Formicidae) from Indian Himalaya with a revised key to the Palaearctic and Oriental species. Sociobiology. 59:317-330.
- Liu, X. and Xu, Z.-H. 2011. Three New Species of the Ant Genus Stenamma (Hymenoptera: Formicidae) from Himalaya and the Hengduan Mountains With a Revised Key to the Known Species of the Palaearctic and Oriental Regions. Sociobiology. 58:733-748.
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.
- Liu X., and Z. H. Xu. 2011. Three New Species of the Ant Genus Stenamma (Hymenoptera: Formicidae) from Himalaya and the Hengduan Mountains With a Revised Key to the Known Species of the Palaearctic and Oriental Regions. Sociobiology 58: 733-748.