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Microdaceton viriosum
| Microdaceton viriosum | |
|---|---|
| |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Myrmicinae |
| Tribe: | Attini |
| Genus: | Microdaceton |
| Species: | M. viriosum |
| Binomial name | |
| Microdaceton viriosum Bolton, 2000
| |
Specimens have been collected in litter-samples from wet forest.
Identification
Bolton (2000) - In the type-series the first gastral tergite and sternite are both superficially sculptured in at least their basal halves; the propodeal spines are stout, straight to slightly downcurved. With the head in profile the highest point of the vertex has a pair of small, low, obtuse tubercles. Another, smaller, tubercle is present anterior to this pair, the three together forming the points of a triangle.
Keys including this Species
Distribution
Distribution based on Regional Taxon Lists
Afrotropical Region: Rwanda, Uganda (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
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- viriosum. Microdaceton viriosum Bolton, 2000: 29, figs. 24, 28, 32 (w.q.) UGANDA.
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 4.2, HL 1.10, HW 1.04, CI 95, ML 0.64, MI 58, SL 0.70, SI 67, PW 0.52, AL 0.94. Answering the description of Microdaceton tibialis except as follows.
1. Mesonotum with a pair of truncated blunt tubercles.
2. Petiole node in profile grossly inflated, enormous when compared to postpetiole.
3. Larger species with shorter mandibles and scapes (compare measurements) .
Paratypes. TL 3.7-4.2, HL 1.04-1.10, HW 0.99-1.06, CI 95-99, ML 0.60-0.64, MI 56-60, SL 0.67-0.72, SI 66-70, PW 0.50-0.54, AL 0.86-0.94 (8 measured).
Type Material
Holotype worker, Uganda: Ruwenzori Mts, Kilembe, 1 550 m., 5.v.1992 (Erne & Cuccodoro) (Musee d'Histoire Naturelle Genève). Paratypes. 1 1 workers and 1 queen with same data as holotype (NHM, The Natural History Museum, Museum of Comparative Zoology).
References
- Bolton, B. 2000. The ant tribe Dacetini. Memoirs of the American Entomological Institute. 65:1-1028. (page 29, figs. 24, 28, 32 worker, queen described)
- Nsengimana, V., Hagenimana, T., Barakagwira, J., de Dieu Nsenganeza, J., Iradukunda, S. C., Majyambere, M., Kizungu, O. B., Nkundimana, A., Umutoni, D., Fabrice, R., Cyubahiro, B., Kouakou, L. M., Kolo, Y., Anale, J. S., Gómez, K., Dekoninck, W. 2023. Checklist of ant (Hymenoptera: Formicidae) species from Nyungwe Tropical Rain Forest, south-western Rwanda. Journal of East African Natural History 111(2), 69-81 (doi:10.2982/028.111.0203).