Paratrechina ankarana
Paratrechina ankarana | |
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Scientific classification | |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | Insecta |
Order: | Hymenoptera |
Family: | Formicidae |
Subfamily: | Formicinae |
Tribe: | Lasiini |
Genus: | Paratrechina |
Species: | P. ankarana |
Binomial name | |
Paratrechina ankarana LaPolla & Fisher, 2014 |
This species is restricted to Madagascar were it is found in dry forest habitats.
Identification
Dark brown, with cuticle giving a faint greenish-blue reflection; propodeum with fine striations across surface; SI less than 195.
Keys including this Species
Distribution
Distribution based on Regional Taxon Lists
Malagasy Region: Madagascar (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
Images from AntWeb
Worker. Specimen code casent0906651. Photographer Estella Ortega, uploaded by California Academy of Sciences. | Owned by CAS, San Francisco, CA, USA. |
Worker. Specimen code casent0906652. Photographer Estella Ortega, 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.
- ankarana. Paratrechina ankarana LaPolla & Fisher, 2014: 41, figs 1-3 (w.) MADAGASCAR.
Holotype worker. MADAGASCAR: Province Antsiranna, Rés. Spéc. Ankarana; 22.9km 224° SW Antivorano Nord; 80 m; 12°55'S, 49°7'E; 10-16.ii.2001; Fisher et al.; CASENT0454372 (CASC).
Paratypes. 6 paratype workers with the same locality information as the holotype (CASC, USNM); 9 paratype workers, Antsiranna, Rés. Spéc. Ankarana; 22.9 km 224° SW Antivorano Nord; 210 m; 12°52'S, 49°14'E; 16-21.ii.2001; Fisher et al. (BMNH, CASC, PBZT, USNM).
Description
Worker
(n=6) TL: 2.60–2.84; HW: 0.60–0.63; HL: 0.66–0.72; EL: 0.18–0.20; SL: 1.10–1.17; PW: 0.42–0.46; WL: 1.01–1.07; GL: 0.90–1.14; PFL: 0.80–0.90; CI: 85–92; REL: 27–29; REL2: 31–33; SI: 184–191; SMC: 24–30; PMC: 3–6; MMC: 3–4.
Dark brown; antennae lighter with trochanters yellow to white; cuticle smooth and shiny, except on propodeum which posseses fine striations across surface; under microscrope view cuticle has a faint greenish-blue reflection; abundant macrosetae across scapes, head, pronotum, mesonotum, and gaster; scapes with short pubescence. Head ovate; posterolateral corners rounded with complete posterior margin; midpoint of eyes at approximately midline of head; eyes convex; 3 small ocelli present; mandibles with 5 teeth; apical tooth the longest, 3rd tooth from apical shortest, remainder about the same size; outer mandibular surface with slight striations across surface. In lateral view, pronotum rises in a straight margin towards mesonotum with only slight convexity towards mesonotal margin; propodeum large and bulbous, making division between dorsal and declivitous faces difficult; metanotal suture with distinct impression that extends down along the mesopleural/metapleural margin; mesopleuron with darkened ridge along impression.
Etymology
The specific epithet is derived from the name of the reserve where the species was found.
References
- Boudinot, B.E., Borowiec, M.L., Prebus, M.M. 2022. Phylogeny, evolution, and classification of the ant genus Lasius, the tribe Lasiini and the subfamily Formicinae (Hymenoptera: Formicidae). Systematic Entomology 47, 113-151 (doi:10.1111/syen.12522).
- LaPolla, J.S. & Fisher, B.L. 2014. Then there were five: a reexamination of the ant genus Paratrechina (Hymenoptera, Formicidae). ZooKeys 422, 35–48 (doi: 10.3897/zookeys.422.7779).
- Tseng, S.-P. 2020. Evolutionary history of a global invasive ant, Paratrechina longicornis (Dissertation_全文 ). Ph.D. thesis, Kyoto University.
References based on Global Ant Biodiversity Informatics
- Huong N. T. T., P. V. Sang, and B. T. Viet. 2015. A preliminary study on diversity of ants (Hymenoptera: Formicidae) at Hon Ba Nature Reserve. Environmental Scientific Conference 7: 614-620.