Octostruma batesi
Octostruma batesi | |
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Scientific classification | |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | Insecta |
Order: | Hymenoptera |
Family: | Formicidae |
Subfamily: | Myrmicinae |
Tribe: | Attini |
Genus: | Octostruma |
Species: | O. batesi |
Binomial name | |
Octostruma batesi (Emery, 1894) |
Nothing is known about the biology of Octostruma batesi.
Identification
Octostruma batesi is very similar to the widespread Octostruma betschi of the Amazonian lowlands, the latter differing in the presence of appressed spatulate setae on the scape and a somewhat more concave face. Octostruma batesi, O. betschi, and Octostruma stenognatha are all similar in size and head shape and possibly form a clade. Although geographic coverage is poor, the known specimens form an allopatric or parapatric replacement series in South America. However, the provenance of the holotype of O. batesi is uncertain. The type locality, in the original publication and on the specimen, is simply "Amazonas." (Longino 2013)
Keys including this Species
Distribution
Brazil (Amazonas), Ecuador, Bolivia. (Longino 2013)
Latitudinal Distribution Pattern
Latitudinal Range: -1.174563° to -15.816667°.
North Temperate |
North Subtropical |
Tropical | South Subtropical |
South Temperate |
- Source: AntMaps
Distribution based on Regional Taxon Lists
Neotropical Region: Bolivia, Brazil (type locality), Ecuador, French Guiana, Guyana, Suriname.
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
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Castes
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- batesi. Rhopalothrix batesi Emery, 1894c: 218, pl. 1, fig. 11 (w.) BRAZIL. Combination in Octostruma: Brown, 1949f: 92. See also: Brown & Kempf, 1960: 201; Hölldobler & Wilson, 1986: 17.
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Description
Worker
Brown and Kempf (1960) - Holotype: TL 2,8, HL 0.64, HW 0.71 (CI 111), WL 0.78 mm. This species is similar to Octostruma balzani, but is a little larger and has more conspicuous, rounded lateral flanges on the occipital lobes behind the compound eyes. Also, the scapes are not so strongly lobiform at the basal angle. We know batesi from only the single holotype worker, so it is impossible to be sure of the status of the species. It could even be an extreme form of balzani. The female is needed before the relationships of this species can be properly assessed.
Longino (2013) - The holotype of O. batesi closely matches three Museum of Comparative Zoology collections I have examined, two from the Andean foothills in Ecuador and one from the Andean foothills in Bolivia. The type is slightly larger than any of the other specimens. Brown and Kempf (1960) examined the holotype and provided measurements HW 0.71, HL 0.64, WL 0.78, CI 111. Measurements of the holotype using the AntWeb image were smaller: HW 0.65, HL 0.59, CI 110. Measurements for one worker each from the three MCZ collections are HW 0.53–0.60, HL 0.50–0.55, CI 107–111.
Type Material
Longino (2013) - Holotype worker: Brazil, Amazonas Museo Civico di Storia Naturale, Genoa (AntWeb image examined, CASENT0904968).
References
- Albuquerque, E., Prado, L., Andrade-Silva, J., Siqueira, E., Sampaio, K., Alves, D., Brandão, C., Andrade, P., Feitosa, R., Koch, E., Delabie, J., Fernandes, I., Baccaro, F., Souza, J., Almeida, R., Silva, R. 2021. Ants of the State of Pará, Brazil: a historical and comprehensive dataset of a key biodiversity hotspot in the Amazon Basin. Zootaxa 5001, 1–83 (doi:10.11646/zootaxa.5001.1.1).
- Brown, W. L., Jr. 1949h. Revision of the ant tribe Dacetini: IV. Some genera properly excluded from the Dacetini, with the establishment of the Basicerotini new tribe. Trans. Am. Entomol. Soc. 75: 83-96 (page 92, Combination in Octostruma)
- Brown, W. L., Jr.; Kempf, W. W. 1960. A world revision of the ant tribe Basicerotini. Stud. Entomol. (n.s.) 3: 161-250 (page 201, see also)
- Emery, C. 1894d. Studi sulle formiche della fauna neotropica. VI-XVI. Bull. Soc. Entomol. Ital. 26: 137-241 (page 218, pl. 1, fig. 11 worker described)
- Franco, W., Ladino, N., Delabie, J.H.C., Dejean, A., Orivel, J., Fichaux, M., Groc, S., Leponce, M., Feitosa, R.M. 2019. First checklist of the ants (Hymenoptera: Formicidae) of French Guiana. Zootaxa 4674, 509–543 (doi:10.11646/zootaxa.4674.5.2).
- Hölldobler, B.; Wilson, E. O. 1986a. Soil-binding pilosity and camouflage in ants of the tribes Basicerotini and Stegomyrmecini (Hymenoptera, Formicidae). Zoomorphology (Berl.) 106: 12-20 (page 17, see also)
- Longino, J.T. 2013. A revision of the ant genus Octostruma Forel 1912 (Hymenoptera, Formicidae). Zootaxa 3699, 1-61. doi:10.11646/zootaxa.3699.1.1
References based on Global Ant Biodiversity Informatics
- Fernández, F. and S. Sendoya. 2004. Lista de las hormigas neotropicales. Biota Colombiana Volume 5, Number 1.
- Franco W., N. Ladino, J. H. C. Delabie, A. Dejean, J. Orivel, M. Fichaux, S. Groc, M. Leponce, and R. M. Feitosa. 2019. First checklist of the ants (Hymenoptera: Formicidae) of French Guiana. Zootaxa 4674(5): 509-543.
- Longino J. T. 2013. A revision of the ant genus Octostruma Forel 1912 (Hymenoptera, Formicidae). Zootaxa 3699(1): 1-61.
- Santschi F. 1931. Fourmis de Cuba et de Panama. Revista de Entomologia (Rio de Janeiro). 1: 265-282.