.jpg){kind=logo}
Diacamma colosseense
| Diacamma colosseense | |
|---|---|
| |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Ponerinae |
| Tribe: | Ponerini |
| Genus: | Diacamma |
| Species: | D. colosseense |
| Binomial name | |
| Diacamma colosseense Forel, 1915
| |
This species is allopatric to other species of Diacamma, occurring along the south-eastern coast of Queensland from just north of Rockhampton south to Bundaberg.
| At a Glance | • Gamergate |
Identification
Anterior clypeal margin broadly rounded medially. Anterior region of mandible mainly smooth, basal region weakly striate, elongate foveae along entire length. Larger body size (compare head length, head width, mesosomal length, mid-tibial length and scape length). Dorsal surfaces of pronotum and head with distinct rugae. Petiolar spines relatively narrowly spaced, anterior and dorsal faces of node similar in length and separated by a broad, rounded angle.
Diacamma colosseense is most similar to Diacamma schoedli. It differs in being larger, in having weaker mandibular sculpturing and having the anterior clypeal margin broadly rounded medially (it is more angular in Diacamma schoedli). It differs from Diacamma australe in the shape of the petiolar spines, shape of the node and sculpturing on the first gastral segment as outlined above under that species.
Keys including this Species
Distribution
Latitudinal Distribution Pattern
Latitudinal Range: -22.96666667° to -25°.
| North Temperate |
North Subtropical |
Tropical | South Subtropical |
South Temperate |
- Source: AntMaps
Distribution based on Regional Taxon Lists
Australasian Region: Australia (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.
- colosseense. Diacamma australe var. colosseensis Forel, 1915b: 26 (w.) AUSTRALIA. Junior synonym of australe: Taylor & Brown, D.R. 1985: 29. Revived from synonymy and raised to species: Shattuck & Barnett, 2006: 15.
Type Material
- Diacamma australe colosseensis Forel, 1915: Lectotype (designated by Shattuck, 2006: 15-16), worker, Gin-Gin, Queensland, Australia, Musee d'Histoire Naturelle Genève.
Taxonomic Notes
Forel (1915) described D. australe colosseense based on syntypes from Colosseum, Chillagoe, Atherton, and Gin Gin, Queensland. Shattuck (2006) examined three specimens (on a single pin) from Gin Gin and a single specimen from Atherton located in the Muséum d'Histoire Naturelle, Geneva. The Gin Gin specimens, which were in good condition, differed from the Atherton specimen and represent a separate species. These specimens match the concept of D. colosseense proposed by Shattuck (2006) and one was designated the lectotype for the name.
The single Atherton specimen (which is in poor condition) is consistent with Forel's original description in the shape of the node, the only character mentioned in detail. This shape clearly applies to Diacamma australe. Additional examination of this specimen shows that it shares a range of characters with D. australe, including the shape of the petiolar spines and sculpturing on the first gastral tergite. Based on these similarities this specimen is treated by Shattuck (2006) as conspecific with Fabricius' D. australe. With the lectotype designation for D. colosseense this specimen becomes a secondary type (a paralectotype) and therefore does not provide a name for these taxa.
Description
Measurements (n = 8): HL 2.82 - 3.05 mm, HW 2.23 - 2.62 mm, CI 79 - 86, SL 3.22 - 3.47 mm, SI 130 - 146, ML 4.20 - 4.41 mm, MTL 2.65 - 2.86 mm, PH 1.61 - 1.78 mm, PL 1.02 - 1.15 mm, PI 62 - 67.