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Stictoponera sichuanensis
| Stictoponera sichuanensis | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Ectatomminae |
| Tribe: | Ectatommini |
| Genus: | Stictoponera |
| Species: | S. sichuanensis |
| Binomial name | |
| Stictoponera sichuanensis (Lattke, 2004) | |
Nothing is known about the biology of Stictoponera sichuanensis.
Identification
Lattke (2004) - The following traits serve to separate Stictoponera from China that could be confused with S. sichuanensis. Stictoponera panda is distinguished by the anteromedian irregular strigae on the pronotum, the irregularly strigose mesopleuron, and the more weakly impressed mesopleural suture. The postpetiolar strigae lack anterior anastomization and the lateral rugulae of the fourth abdominal segment are lower, not as prominent. Stictoponera taivanensis can be separated from S. sichuanensis by its lack of an occipital lobe and the presence of short propodeal denticles. The postpetiolar dorsum of S. taivanensis is mostly longitudinally strigulose-punctate compared with the posterior thinning of the rugulae into very low transverse to arching strigulae in S. sichuanensis. The dorsum of the second gastric segment of S. taivanensis is mostly smooth with abundant punctae and occasional traces of longitudinal striae.
Keys including this Species
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. |
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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. |
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Biology
Castes
Queen and male are unknown.
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- sichuanensis. Gnamptogenys sichuanensis Lattke, 2004: 221, fig. 62 (w.) CHINA (Sichuan).
- Type-material: holotype worker, 1 paratype worker.
- Type-locality: holotype China: Szechwan (= Sichuan), nr Muping, 6000 ft., vii.1929 (D.C. Graham); paratype with same data but spelled Szechuen.
- Type-depositories: USNM (holotype); MCZC (paratype).
- Combination in Stictoponera: Camacho, Franco, Branstetter, et al. 2022: 12.
- Status as species: Zhou & Ran, 2010: 103; Guénard & Dunn, 2012: 27; Chen, et al. 2017: 110 (in key); Camacho, Franco, Branstetter, et al. 2022: 12.
- Distribution: China.
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Occipital lobe well developed in lateral view, with thin, almost translucent lamella. Promesonotum longitudinally rugose-punctate; pronotal side and mesopleuron with parallel longitudinal strigae; postpetiolar dorsum anterad with anastomizing rugae.
Brown (1958:300, Fig. 18) misidentified the present two specimens of S. sichuanensis as S. panda.
Description
Worker
Metrics. [Holotype] Paratype: HL [1.37] 1.35, HW [1.24] 1.23, ML [0.72] 0.71, SL [1.10] 1.13, ED [0.15] 0.16, WL [1.70] 1.78 mm. CI [0.91] 0.91, SI [0.89] 0.92, MI [0.58] 0.58, OI [0.12] 0.13. Head with posterior margin straight to weakly concave in dorsal view; anterior clypeal margin convex; clypeus anterolaterally with longitudinal strigulae, rugose-punctate posterad; frontal triangle U-shaped, with smooth bottom; longitudinal strigulae arch posterad over eyes becoming rugose-punctate laterally, frons laterally longitudinally strigulose, areolate toward vertex; posterior cephalic margin convex in lateral view; occipital lobes well developed, with thin, almost translucent lamella. Humeral angle well developed, not protuberant, without shallow posterior sulcus, laterally with longitudinal strigae separated by broad sulci, with anteroventral blunt angle and posteroventral rounded lobe; pronotal dorsum longitudinally rugose-punctate, rugae more continuous medially than laterally; promesonotal suture partially impressed, not breaking sculpture; mesopleuron longitudinally strigose, mesopleural suture well defined; mesosomal dorsum with dense longitudinal strigae, strigae irregular on propodeum; propodeum rugose-punctate, declivituous face with transverse carinae, rest smooth; mesosoma evenly convex until propodeal declivity in lateral view, declivity vertical, slightly convex.
Petiolar node rugose-punctate; subpetiolar process broadly triangular in lateral view, ventrally not cuneiform; postpetiolar dorsum with anterior anastomizing rugae, rugae diverging and less prominent posterad, posteromedially with arching strigulae, laterally with parallel strigae; sternite transversely strigose-punctate; postpetiolar process forms two contiguous convex lobes in ventral view, with median cleft and brief median carinae; fourth abdominal tergite with patches of longitudinal striae centered around punctae on smooth background, posterior margin strigulose-striate; sternite transversely strigose. Fore coxae laterally transversely strigose; fore tarsal dorsum punctate, with abundant pilosity; basal concavity with row of stout setae; metacoxal tooth low, triangular. Dorsum of thorax and abdominal segments 1-4 with scattered erect to subdecumbent hairs. Body with abundant golden decumbent pilosity; body brown; legs, antennae, and mandibles ferruginous brown.
Type Material
Holotype worker. China, Szechwan [Sichuan], near Muping, 6000ft [1829m], July 1929, D.C. Graham leg. Deposited in National Museum of Natural History. Paratype. Same data as holotype, but Sichuan is spelled "Szechuen," 1 worker in Museum of Comparative Zoology.
Etymology
The species name is derived from the name of the province that contains the type locality: Sichuan.
References
- Camacho, G.P., Franco, W., Branstetter, M.G., Pie, M.R., Longino, J.T., Schultz, T.R., Feitosa, R.M. 2022. UCE phylogenomics resolves major relationships among Ectaheteromorph ants (Hymenoptera: Formicidae: Ectatomminae, Heteroponerinae): A new classification for the subfamilies and the description of a new genus. Insect Systematics and Diversity 6(1): 5; 1–20 (doi:10.1093/isd/ixab026).
- Lattke, J. E. 2004. A Taxonomic Revision and Phylogenetic Analysis of the Ant Genus Gnamptogenys Roger in Southeast Asia and Australasia (Hymenoptera: Formicidae: Ponerinae). University of California Publications in Entomology 122: 1-266 (page 221, fig. 62 worker described)
- Liu, C., Fischer, G., Hita Garcia, F., Yamane, S., Liu, Q., Peng, Y.Q., Economo, E.P., Guénard, B., Pierce, N.E. 2020. Ants of the Hengduan Mountains: a new altitudinal survey and updated checklist for Yunnan Province highlight an understudied insect biodiversity hotspot. ZooKeys 978, 1–171 (doi:10.3897/zookeys.978.55767).
References based on Global Ant Biodiversity Informatics
- Chen P., Y. Su, S. S. Rao, Y. F. Long, and C. H. Du. 2012. Study on the ant diversity in different Illicium verum stands. Journal of West China Forestry Science 41(1): 60-68.