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Baracidris sitra
| Baracidris sitra | |
|---|---|
| |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Myrmicinae |
| Tribe: | Solenopsidini |
| Genus: | Baracidris |
| Species: | B. sitra |
| Binomial name | |
| Baracidris sitra Bolton, 1981
| |
The holotype and only known specimens of sitra seems to come from a leaf-litter sample. (Bolton 1981)
Identification
Similar to the also minute Baracidris meketra but can be separated by the anterior clypeal margin produced into a short truncated simple lobe and the occipital margin of head in full-face view transverse or exceedingly feebly convex, not indented or concave medially. Additionaly, sitra is slightly larger. (Bolton 1981)
Recognized by clypeus produced into a narrow truncated lobe, posterior margin of head not concave medially and body devoid of conspicuous hairs. (Fernández 2003)
Keys including this Species
Distribution
Latitudinal Distribution Pattern
Latitudinal Range: -2.226388889° to -2.283333333°.
| North Temperate |
North Subtropical |
Tropical | South Subtropical |
South Temperate |
- Source: AntMaps
Distribution based on Regional Taxon Lists
Afrotropical Region: Central African Republic, Gabon (type locality), Ivory Coast.
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
Worker
Images from AntWeb
  
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| Worker. Specimen code casent0406851. Photographer April Nobile, uploaded by California Academy of Sciences. | Owned by CAS, San Francisco, CA, USA. |
   
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| Worker. Specimen code casent0006829. Photographer April Nobile, uploaded by California Academy of Sciences. | Owned by CAS, San Francisco, CA, USA. |
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- sitra. Baracidris sitra Bolton, 1981b: 256, fig. 14 (w.) GABON.
- Type-material: holotype worker.
- Type-locality: Gabon: Plateau d’Ipassa, VM9, IPA7 (J.M. Barra).
- Type-depository: MCZC.
- Status as species: Bolton, 1995b: 80; Fernández, 2003b: 36.
- Distribution: Gabon.
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Description
Worker
Holotype. TL 2.0, HL 0.51, HW 0.44, CI 86, SL 0.31, SI 70, PW 0.31, AL 0.56.
Answering to the description of Baracidris meketra as regards general shape, sculpture etc., but differing as follows.
Anterior clypeal margin produced into a short truncated simple lobe. Occipital margin of head in full-face view transverse or exceedingly feebly convex, not indented or concave medially. Larger, more stockily built species with relatively broader head and shorter antennal scapes - compare standard measurements. Apart from these the lengths of apical and preapical funicular segments in sitra are 0.26, 0.07 respectively, and the dorsal lengths of promesonotum and propodeum are 0.35, 0.12 respectively. Petiole node in dorsal view slightly broader than long (0.13 by 0.10). Propodeal dorsum more strongly convex and the lamella linking the teeth to the metapleural lobes broader, minimum width of the lamella 0.06 (as opposed to 0.03 in meketra holotype).
Type Material
Holotype worker, Gabon: Plateau d'Ipassa, VM9, IPA 7 (J. A. Barra) (Museum of Comparative Zoology).
References
- Bolton, B. 1981b. A revision of six minor genera of Myrmicinae (Hymenoptera: Formicidae) in the Ethiopian zoogeographical region. Bull. Br. Mus. (Nat. Hist.) Entomol. 43: 245-307. (page 256, fig. 14 worker described)
- Fernández, F. 2003b. Revision of the myrmicine ants of the Adelomyrmex genus-group (Hymenoptera: Formicidae). Zootaxa 361: 1-52 (page 36, see also)
References based on Global Ant Biodiversity Informatics
- Bolton B. 1981. A revision of six minor genera of Myrmicinae (Hymenoptera: Formicidae) in the Ethiopian zoogeographical region. Bulletin of the British Museum (Natural History). Entomology 43: 245-307.
- Braet Y., and B. Taylor. 2008. Mission entomologique au Parc National de Pongara (Gabon). Bilan des Formicidae (Hymenoptera) recoltes. Bulletin S. R. B. E./K.B.V.E. 144: 157-169.
- Fernández, F. 2003. Revision of the myrmicinae ants of the Adelomyrmex genus-group. Zootaxa 361: 1-52.