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Stigmatomma amblyops
| Stigmatomma amblyops | |
|---|---|
| |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Amblyoponinae |
| Tribe: | Amblyoponini |
| Genus: | Stigmatomma |
| Species: | S. amblyops |
| Binomial name | |
| Stigmatomma amblyops Karavaiev, 1935
| |
Hamer et al. (2023) - First recorded in Hong Kong in 2014, Stigmatomma amblyops is recorded from Lophostemon confertus Peter G. Wilson & J. T. Waterhouse (Myrtaceae) plantations alongside natural areas such as country parks within Hong Kong. This species has yet to be recorded from Macau, potentially suggesting low tolerance for urbanization (Brassard et al., 2021). Elsewhere in Asia the species is recorded from Vietnam (type locality), Yunnan and Hainan (unpublished records). In addition, S. amblyops seems to be associated with higher elevations, with records in Hong Kong all above approximately 200 m. In other parts of its range, it is also associated with mid elevation mountainous regions (Fontanilla et al., 2019), including those dominated in evergreen forests (Zryanin 2013). This species is likely present in nearby Chinese provinces of Guangdong and Guangxi as well as other Asian countries.
Identification
Sahanashree et al. (2023) - Stigmatomma amblyops is easily separated from most of its congeners in Asia by the following combination of characters:
- antennae 12 segmented
- head in full-face view, elongate trapezoidal, longer than broad
- anterior clypeal margin with 6 dentiform setae, the lateral setae larger than the others
Stigmatomma amblyops is similar to Stigmatomma minutum in having 12 segmented antennae, and anterior clypeal margin with 6 dentiform setae. However, S. amblyops and S. minutum, has strong difference in the width of the posterior extension of the clypeus between the toruli, being wide in the former species and narrow (almost obliterated) in the latter. Lateral dentiform setae on anterior clypeal margin are larger than the rest of the dentiform setae in S. amblyops, whereas lateral dentiform setae on anterior clypeal margin are subequal in S. minutum.
Variation: Indian specimens differ from those of Chinese in having more pilosity and larger dentition.
Keys including this Species
Distribution
Within India, Stigmatomma amblyops has only been reported from the Eastern Himalayas (Sahanashree et al., 2023).
Distribution based on Regional Taxon Lists
Oriental Region: India, Vietnam (type locality).
Palaearctic Region: China.
Hamer et al. (2023), Fig. 2. Distribution map of Amblyoponinae species in Hong Kong (SAR), iNat = iNaturalist. A) Prionopelta kraepelini; B) Stigmatomma amblyops, S. crypticum, S. draconis; C) Stigmatomma luyiae, S. pagei, S. zwaluwenburgi; D) Stigmatomma nr. quadratum. Dark green zones indicate greater tree cover.
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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
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Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- amblyops. Stigmatomma amblyops Karavaiev, 1935a: 57, fig. 1 (w.) VIETNAM.
- Type-material: 2 syntype workers.
- Type-locality: Vietnam (“Cochinchine”): Cauda, Nr 5675 (K. Davydov).
- Type-depository: SIZK.
- Combination in Amblyopone: Brown, 1960a: 167;
- combination in Stigmatomma: Yoshimura & Fisher, 2012a: 19.
- Status as species: Chapman & Capco, 1951: 24; Brown, 1960a: 167; Bolton, 1995b: 61; Xu, 2001d: 552 (in key); Xu & Chu, 2012: 1182 (in key).
- Distribution: Vietnam.
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Description
Worker
Hamer et al. (2023) - (n=2); HL 0.81-0.82; HW1 0.72-0.72; HW2 0.7-0.71; SL 0.41-0.43; ML 0.59-0.62; WL 1.08-1.1; PPW 0.37-0.38; DPW 0.43-0.43; DPL 0.4-0.4; GL 0.56-1.18; TL 3.5-4.1; CI 87.81-89.13; MI 74.01-75.7; SI 57.96-60.4; PI 106.41-106.87
References
- Bolton, B. 1995b. A new general catalogue of the ants of the world. Cambridge, Mass.: Harvard University Press, 504 pp. (page 61, catalogue)
- Brown, W. L., Jr. 1960a. Contributions toward a reclassification of the Formicidae. III. Tribe Amblyoponini (Hymenoptera). Bulletin of the Museum of Comparative Zoology 122: 143-230 (page 167, Combination in Amblyopone)
- Hamer, M.T., Pierce, M.P., Guénard, B. 2023. The Amblyoponinae (Formicidae) of Hong Kong. Asian Myrmecology 16, e016005 (doi:10.20362/am.016005).
- Karavaiev, V. 1935a. Neue Ameisen aus dem Indo-Australischen Gebiet, nebst Revision einiger Formen. Treubia 15: 57-118 (page 57, fig. 1 worker described)
- Liu, C., Fischer, G., Hita Garcia, F., Yamane, S., Liu, Q., Peng, Y.Q., Economo, E.P., Guénard, B., Pierce, N.E. 2020. Ants of the Hengduan Mountains: a new altitudinal survey and updated checklist for Yunnan Province highlight an understudied insect biodiversity hotspot. ZooKeys 978, 1–171 (doi:10.3897/zookeys.978.55767).
- Radchenko, A.G., Fisher, B.L., Esteves, F.A., Martynova, E.V., Bazhenova, T.N., Lasarenko, S.N. 2023. Ant type specimens (Hymenoptera, Formicidae) in the collection of Volodymyr Opanasovych Karawajew. Communication 1. Dorylinae, Poneromorpha and Pseudomyrmecinae. Zootaxa, 5244(1), 1–32 (doi:10.11646/zootaxa.5244.1.1).
- Sahanashree, R., Aswaj, P., Aniruddha, M., Priyadarsanan, D.R. 2023. Two new reports of Stigmatomma Roger, 1859 (Hymenoptera, Formicidae, Amblyoponinae) species from the Indian Subcontinent. Sociobiology 70(4): e9315 (doi:10.13102/sociobiology.v70i4.9315).
- Yoshimura, M. & Fisher, B.L. 2012. A revision of male ants of the Malagasy Amblyoponinae (Hymenoptera: Formicidae) with resurrections of the genera Stigmatomma and Xymmer. PLoS ONE 7(3):e33325 (doi:10.1371/journal.pone.0033325).
References based on Global Ant Biodiversity Informatics
- Fontanilla A. M., A. Nakamura, Z. Xu, M. Cao, R. L. Kitching, Y. Tang, and C. J. Burwell. 2019. Taxonomic and functional ant diversity along tropical, subtropical, and subalpine elevational transects in southwest China. Insects 10, 128; doi:10.3390/insects10050128
- Karavaiev V. 1935. Neue Ameisen aus dem Indo-Australischen Gebiet, nebst Revision einiger Formen. Treubia 15: 57-118.