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Holcoponera atrata
| Holcoponera atrata | |
|---|---|
| |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Ectatomminae |
| Tribe: | Ectatommini |
| Genus: | Holcoponera |
| Species: | H. atrata |
| Binomial name | |
| Holcoponera atrata (Lattke, 2004)
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Only known from workers, nothing is known about the biology of Holcoponera atrata.
Identification
This is the largest-bodied member of the epinotalis group and besides Holcoponera major the only other species that is predominantly black in coloration. It is also the only species lacking ridges or denticles on the posterolateral corners of the propodeal declivity. H. major has a more triangular-shaped petiolar node in lateral view and an evenly convex margin on the clypeal lamella.
Distribution
Distribution based on Regional Taxon Lists
Indo-Australian Region: Indonesia (type locality), Sulawesi.
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
Queens and males have not been collected.
Images from AntWeb
 
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| Paratype of Gnamptogenys atrata. Worker. Specimen code casent0179979. Photographer Erin Prado, uploaded by California Academy of Sciences. | Owned by MIZA, Maracay, Venezuela. |
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- atrata. Gnamptogenys atrata Lattke, 2004: 160, fig. 38 (w.) INDONESIA (Sulawesi).
- Type-material: holotype worker, 4 paratype workers.
- Type-locality: holotype Indonesia: Sulawesi Utara, G. Mogogonipa, 1000 m., 24.ix.1986 (no collector’s name); paratypes with same data.
- Type-depositories: BMNH (holotype); BMNH, MIZA (paratypes).
- Combination in Holcoponera: Camacho, Franco, Branstetter, et al. 2022: 11.
- Status as species: Camacho, Franco, Branstetter, et al. 2022: 11.
- Distribution: Indonesia (Sulawesi).
Description
Worker
Lattke (2004) - Metrics. [Holotype] Paratypes (n = 2): HL [0.89] 0.91, 0.93; HW [0.71] 0.73, 0.75; ML [0.44] 0.43, 0.43; SL [0.63] 0.66, 0.68; ED [0.05] 0.08, 0.09; WL [1.16] 1.14, 1.11 mm. CI [0.81] 0.81, 0.80; SI [0.89] 0.91, 0.92; MI [0.62] 0.58, 0.58; OI [0.07] 0.11, 0.12. Head with anterior margin of clypeal lamella converging to form blunt obtuse angle in frontal view; clypeus longitudinally strigulose with median smooth area; clypeal lamella translucent, mostly smooth with sparse low strigulae. Pronotal dorsum with shallow piligerous punctae, each with one side deeper than other, roughly arranged in arches; rest of mesosomal dorsum mostly smooth medially, laterally punctate; pronotum strigulose-punctate laterally, punctae relatively shallow, arranged in arches; promesonotal suture feebly impressed; katepisternum strigose, anepisternum mostly smooth; mesopleural suture very broad with transverse ridges and strigulae; metapleuron relatively smooth anterodorsad and longitudinally costulate posteroventrad; lateral propodeal surface mostly smooth, propodeal dorsum slightly scabrose, mostly smooth medially; propodeal declivity mostly smooth, posterolateral ridge or denticle lacking; declivitous propodeal margin slightly convex in lateral view, propodeal spiracle mounted on tubular prominence that extends beyond declivitous margin; mesosoma in lateral view with very broadly convex dorsal margin.
Petiolar dorsum mostly smooth, sparsely punctate, punctae becoming larger laterally; postpetiole laterally with scalloped foveolate, postpetiolar dorsum sparsely punctate, posterior margin with brief longitudinal strigulae; fourth abdominal tergite sparsely punctulate, posterior margin with brief longitudinal striae; fourth abdominal sternite punctate over smooth ground sculpture. Fore coxa transversely strigulose; metacoxal tooth triangular. Dorsum of thorax and abdominal segments 1-4 with abundant erect to subdecumbent hairs. Head, mesosoma, petiole, and gaster black; mandibles, antennae, legs, and apex of propodeal spiracles and clypeal lamella brown.
Type Material
Holotype worker. Indonesia, Sulawesi Utara, 1000m, G. Mogogonipa, 24-ix-1986 (No collector data on the labels). Deposited in The Natural History Museum. Paratypes. Three workers in The Natural History Museum, 1w in Instituto de Zoologia Agricola from holotype series.
Etymology
The species name is derived from the Latin word for “dressed in black,” atratus, and alludes to the predominant body color of this ant.
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 160, fig. 38 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.