Specimens have been collected in litter-samples from wet forest.
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 based on Regional Taxon Lists
Distribution based on AntMaps
Distribution based on AntWeb specimens
Check data from AntWeb
The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.
- 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.
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).
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).
- 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)