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Stictoponera rugodens
| Stictoponera rugodens | |
|---|---|
| |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Ectatomminae |
| Tribe: | Ectatommini |
| Genus: | Stictoponera |
| Species: | S. rugodens |
| Binomial name | |
| Stictoponera rugodens (Lattke, 2004)
| |
The type, a worker, was collected from the edge of primary forest.
Identification
Lattke (2004) - The deeply rugose mandibles in Stictoponera rugodens are quite distinctive and find no parallel in any other species of Stictoponera, with the possible exception of Stictoponera lacunosa, which has a considerably rugose mandibular base, but the rugae are not as deep as in S. rugodens. Stictoponera lacunosa has a less prominent occipital lamella, the clypeal lamella has some minute sculpturing but not as finely scabrose, and its anterior margin is more convex; it is a smaller ant (HW < 0.75 mm), with relatively larger eyes (OI > 0.25) and narrower head (CI < 0.80). Stictoponera polytreta has prominent occipital lamella, as in S. rugodens, but differs in the more broadly convex dorsal margin of the petiolar node, a triangular subpetiolar process, and a relatively longer declivitous propodeal margin compared with its dorsal margin. It is also smaller bodied (HL < 0.85; HW < 0.65; WL < 1.25 mm) than S. rugodens.
Distribution
Distribution based on Regional Taxon Lists
Indo-Australian Region: Borneo (type locality), Indonesia, Malaysia.
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
The queen and male are unknown.
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- rugodens. Gnamptogenys rugodens Lattke, 2004: 214, fig. 60 (w.) BORNEO (East Malaysia: Sarawak).
- Type-material: holotype worker.
- Type-locality: Malaysia: Sarawak, Gunung Penrissen, 1000 m., 23.v.1994, no. 9a (I. Löbl & D. Burckhardt).
- Type-depository: MHNG.
- Combination in Stictoponera: Camacho, Franco, Branstetter, et al. 2022: 12.
- Status as species: Pfeiffer, et al. 2011: 35; Camacho, Franco, Branstetter, et al. 2022: 12.
- Distribution: Malaysia (Sarawak).
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Frontal lobe followed posteriorly by smaller convexity formed by frontal carina; each lateral cephalic margin just posterad of mandible forms small concavity followed by small triangular projection; mandibles deeply rugose, especially toward base. Propodeal declivitous margin very short compared with dorsal margin in lateral view.
Description
Worker
Metrics. Holotype: HL 0.94, HW 0.78, ML 0.42, SL 0.68, ED 0.18, WL 1.37 mm. CI 0.82, SI 0.87, MI 0.55, OI 0.23. Each lateral cephalic margin posterad of eye fairly straight in frontal view; briefly concave just anterad of eye, then mostly straight to broadly convex, followed by small triangular process; clypeal lamella laterally rounded and anteriorly straight, translucent, with reticulate etchings; frontal lobe convex followed posterad by smaller convexity formed by frontal carina; clypeus longitudinally strigulose posterad, sculpturing fading away anterad; mandibles edentate, deeply rugose basally; mandibular dorsal margin undulated basally in lateral view; occipital lamella medially straight, convex at both ends.
Pronotum laterally foveolate, foveolate-strigose posterad, smooth along ventral margin, anteroventrally bluntly angular; anepisternum undulate with punctae; katepisternum strigulose with irregular depressions along posterior margin, anterad smooth; metapleuron smooth, separated from propodeum by row of elongate foveolae that curve just below spiracle; propodeum with scattered foveolae; mesosoma with well developed humeral angle in lateral view. Petiolar node dorsum mostly smooth, sparsely foveolate, laterally densely foveolate, ventral process subquadrate; postpetiole laterally with deep anterior scalloping, slightly shallower posterad; postpetiolar sternite mostly smooth with shallow lateral foveolae, posterior margin with row of punctae; postpetiolar dorsum mostly smooth with sparse scalloped punctae, deeper anterad than posterad; fore coxa transversely strigose, smooth anterad. Dorsum of thorax and abdominal segments 1-4 with scattered erect to subdecumbent hairs. Body brown; mandibles, scapes, legs ferruginous brown.
Type Material
Holotype worker. Malaysia, Sarawak, Gunung Penrissen, 1000m, 23-v-1994, I. Löbl & D. Burckhardt legs, edge of primary forest #9a. Deposited in Musee d'Histoire Naturelle Genève.
Etymology
The species name is a compound epithet derived from the Latin words for “fold,” ruga (f.), and ‘tooth,” dens (m.) that alludes to the deep mandibular rugosities.
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 214, fig. 60 worker described)
References based on Global Ant Biodiversity Informatics
- 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.
- Pfeiffer M.; Mezger, D.; Hosoishi, S.; Bakhtiar, E. Y.; Kohout, R. J. 2011. The Formicidae of Borneo (Insecta: Hymenoptera): a preliminary species list. Asian Myrmecology 4:9-58