Odontomachus banksi
Odontomachus banksi | |
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Scientific classification | |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | Insecta |
Order: | Hymenoptera |
Family: | Formicidae |
Subfamily: | Ponerinae |
Tribe: | Ponerini |
Genus: | Odontomachus |
Species: | O. banksi |
Binomial name | |
Odontomachus banksi Forel, 1910 |
Found only in dipterocarp forests, sometimes degraded, on mountain slopes.
Identification
Sorger & Zettel (2011) - Odontomachus banksi is the most distinct Philippine member of the Odontomachus infandus group species. It can be distinguished from all other species by the relatively long and dense pilosity of the mesosoma and by striation on the etiole. The smooth and shiny posterior of the head is also the Western Visayas, Odontomachus scifictus on Camiguin, and O. sp. 2 on Mindanao. They have brown heads and a smooth area on the mesopleuron, whereas the head of O. banksi is yellowish orange and its mesopleuron densely and fully striate. A population of Odontomachus alius from Catanduanes resembles O. banksi in light and (partly) smooth head, but differs in sparse pilosity of mesosoma, fine striation of mesopleuron, distinctly curved petiolar spine (straight in O. banksi), and brownish gaster (blackish in O. banksi).
Keys including this Species
- Key to Odonotomachus of the Indo-Australian Region
- Key to Odontomachus infandus species group
- Key to Philippine Odontomachus
Distribution
Endemic to the Philippines and present only in the central and southern parts of Luzon; records from Laguna, Quezon (Brown 1976), Camarines Norte and Camarines Sur.
Latitudinal Distribution Pattern
Latitudinal Range: 8.533333778° to 8.050000191°.
North Temperate |
North Subtropical |
Tropical | South Subtropical |
South Temperate |
- Source: AntMaps
Distribution based on Regional Taxon Lists
Indo-Australian Region: Philippines (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
Worker
Images from AntWeb
Lectotype of Odontomachus banksi. Worker. Specimen code casent0907422. Photographer Z. Lieberman, uploaded by California Academy of Sciences. | Owned by MHNG, Geneva, Switzerland. |
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Worker. Specimen code casent0901975. Photographer Z. Lieberman, uploaded by California Academy of Sciences. | Owned by NHMUK, London, UK. |
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- banksi. Odontomachus banksi Forel, 1910d: 121 (w.) PHILIPPINES (Luzon I.).
- Type-material: lectotype worker (by designation of Sorger & Zettel, 2011: 154), 2 paralectotype workers.
- Type-locality: lectotype Philippines: Luzon, Laguna, Mt Banajao (= Banahaw) (C.S. Banks); paralectotypes with same data.
- Type-depository: MHNG.
- Viehmeyer, 1916b: 284 (q.).
- Status as species: Emery, 1911d: 113; Viehmeyer, 1916b: 284; Wheeler, W.M. & Chapman, 1925: 71; Chapman & Capco, 1951: 42; Baltazar, 1966: 239; Brown, 1976a: 102, 125; Bolton, 1995b: 295; Sorger & Zettel, 2011: 154 (redescription).
- Distribution: Philippines (Luzon).
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Description
Worker
Sorger & Zettel (2011) - Lectotype: CI 77, 2.80 HW, 3.65 HL, 56 MdI, 2.05 MdL, 4.95 MsL, 1.60 PnW, 1.47 PtH, 1.63 PtL, 0.58 PtW, 132 SI, 3.70 SL, 16 TL worker with smallest HW: CI 67, HL 2.90, HW 1.95, MdI 56, MdL 1.63, MsL 4.13, PnW 1.13, PtH 1.02, PtL 1.16, PtW 0.40, SI 157, SL 3.07, TL 12.38; worker with largest HW: CI 74, HL 3.70, HW 2.73, MdI 55, MdL 2.05, MsL 5.33, SI 138, SL 3.77, PnW 1.59, PtH 1.58, PtL 1.68, PtW 0.58, TL 15.75.
Structures: Striation on head extending from frontal lobes to ocular ridge, rest of head smooth and shiny. Pronotum with round to transverse striation, closed loops and circles may be visible in dorsal view. Mesopleuron with fine transverse striation. Petiole with some fine striation laterally and with long and acute petiolar spine; anterior face of node straight to almost concave.
Pilosity: Pubescence dense, long.
Colour: Bicoloured; head light brown contrasting with reddish brown mesosoma and petiole, dark brown gaster.
Type Material
Sorger & Zettel (2011) - Lectotype (worker; Musee d'Histoire Naturelle Genève; present designation) and paralectotypes (2 workers; MHNG), mounted on one pin, from Laguna Province (according to Forel 1910).
There is a discrepancy since the types are workers, but Forel (1910) describes gynes ("♀"). However, we believe that this is due to a typesetting error, as the characters “Mésonotum fortement et largement échancré” [translated: Mesonotum strongly and broadly indented] and “les stries ... du pronotum fines et serrés, parfois longitudinales au milieu” [translated: striae...on pronotum fine and tight together, sometimes longitudinal in the middle] must refer to workers. We select the uppermost worker as the lectotype.
References
- Brown, W. L., Jr. 1976c. Contributions toward a reclassification of the Formicidae. Part VI. Ponerinae, tribe Ponerini, subtribe Odontomachiti. Section A. Introduction, subtribal characters. Genus Odontomachus. Stud. Entomol. 19: 67-171. (page 125, see also)
- Forel, A. 1910d. Fourmis des Philippines. Philipp. J. Sci. Sect. D. Gen. Biol. Ethnol. Anthropol. 5: 121-130 (page 121, worker described)
- General, D.E.M., Buenavente, P.A.C., Rodriguez, L.J.V. 2020. A preliminary survey of nocturnal ants, with novel modifications for collecting nocturnal arboreal ants. Halteres 11: 1-12 (doi:10.5281/ZENODO.3707151).
- Sorger, D.M. and H. Zettel. 2011. On the ants (Hymenoptera: Formicidae) of the Philippine Islands: V. The genus Odontomachus LATREILLE, 1804. Myrmecological News. 14:141-163.
- Viehmeyer, H. 1916b. Ameisen von den Philippinen und anderer Herkunft (Hym.). Entomol. Mitt. 5: 283-291 (page 284, queen described)
References based on Global Ant Biodiversity Informatics
- CSIRO Collection
- Samson D.A., E.A. Rickart, and P.C. Gonzales. 1997. Ant diversity and abundance along an elevational gradient in the Philippines. Biotropica 29(3): 349-363.
- Sorger, D.M. and H. Zettel. 2011. On the ants (Hymenoptera: Formicidae) of the Philippine Islands: V. The genus Odontomachus LATREILLE, 1804. Myrmecological News. 14:141-163.
- Viehmeyer H. 1916. Ameisen von den Philippinen und anderer Herkunft (Hym.). Entomologische Mitteilungen. Berlin-Dahlem 5: 283-291.