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Strumigenys terayamai
| Strumigenys terayamai | |
|---|---|
| |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Myrmicinae |
| Tribe: | Attini |
| Genus: | Strumigenys |
| Species: | S. terayamai |
| Binomial name | |
| Strumigenys terayamai (Bolton, 2000)
| |
| Common Name | |
|---|---|
| Ymizo-uroko-ari | |
| Language: | Japanese |
This species is known only from Mt. Yamizo in Tochigi Prefecture, Japan (Japanese Ant Image Database).
Identification
The only member of the Strumigenys terayamai-group.
Strumigenys terayamai is similar to Strumigenys masukoi (Terayama, 2000), but distinguishable by the following character: dorsal surface of mesosoma with simple and club-shaped hairs in S. terayamai vs. with simple and flagellate hairs in S. masukoi (Japanese Ant Image Database).
Keys including this Species
Distribution
Distribution based on Regional Taxon Lists
Palaearctic Region: Japan (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. |
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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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| Paratype of Pyramica terayamai. Worker. Specimen code casent0900158. Photographer Will Ericson, 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.
- terayamai. Pyramica terayamai Bolton, 2000: 468, figs. 257, 286 (w.) JAPAN. Combination in Strumigenys: Baroni Urbani & De Andrade, 2007: 129
Taxonomic Notes
This species corresponds to Pyramica sp. 12 of Terayama (2000). Murata (1990) reported it as Smithistruma rostrataeformis. 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 2.1, HL 0.55, HW 0.42, CI 76, ML 0.09, MI 16, SL 0.32, SI 76, PW 0.29, AL 0.64. Dorsum of head finely and very densely reticulate-punctate, with curved narrowly spatulate ground-pilosity. In profile the dorsum with a pair of fine erect short simple hairs arising from the upper scrobe margin just behind the level of the frontal lobes. A similar pair of hairs arises from close to the occipital margin. In full-face view the occipital lobes each have 2 elongate curved simple hairs that freely project laterally and are weakly curved anterodorsally. With dorsum of head viewed from behind these posteriorly situated hairs are seen to be arranged in a widely spaced row. Eye very small, of 1-2 ommatidia only. Ground pilosity on dorsal alitrunk of curved long spatulate hairs, as on the head but sparser; densest on the pronotum and curved medially. Dorsal alitrunk finely and densely reticulate-punctate; mesopleuron and metapleuron with smooth areas. Dorsum and declivity of propodeum meet in a blunt but marked angle, without trace of teeth. Waist segments and first gastral tergite with simple acute standing hairs present. Legs with dense spatulate pilosity everywhere, the hairs narrow and subappressed to appressed. Disc of postpetiole glassy smooth, in dorsal view completely surrounded by spongiform tissue that is narrowest anteriorly. Basigastral costulae very short but sharply defined upon the glassy-smooth surface.
Type Material
Holotype worker, Japan: Tochigi Pref., Mt Yamizo, 20.x.1986 (K. Murata) (The Natural History Museum). Dr Mamoru Terayama has kindly donated the holotype of this species for deposition in the BMNH collection of dacetines.
References
- Baroni Urbani, C. & De Andrade, M.L. 2007. The ant tribe Dacetini: limits and constituent genera, with descriptions of new species. Annali del Museo Civico di Storia Naturale “G. Doria” 99:1-191.
- Bolton, B. 2000. The ant tribe Dacetini. Memoirs of the American Entomological Institute. 65:1-1028. (page 468, figs. 257, 286 worker described)
- Tang, K. L., Guénard, B. 2023. Further additions to the knowledge of Strumigenys (Formicidae: Myrmicinae) within South East Asia, with the descriptions of 20 new species. European Journal of Taxonomy 907, 1–144 (doi:10.5852/ejt.2023.907.2327).
References based on Global Ant Biodiversity Informatics
- Terayama M., S. Kubota, and K. Eguchi. 2014. Encyclopedia of Japanese ants. Asakura Shoten: Tokyo, 278 pp.