Colosius is a genus of air-breathing land slugs, terrestrial pulmonate gastropod mollusks in the family Veronicellidae, the leatherleaf slugs.
The generic name Colosius is in honor of the Italian zoologist Giuseppe Colosi, who described a few species belonging to this genus in 1921. Thomé established the genus Colosius for five species in 1975. Gomes et al. synonymized Colosius propinquus with Colosius pulcher and discovered another new Colosius species in 2012.
Distribution The distribution of the genus Colosius includes Colombia, Ecuador, Peru, Puerto Rico, Dominican Republic and Haiti.
Species Species within the genus Colosius include: Colosius buergeri (Simroth, 1914) Colosius festae (Colosi, 1921) Colosius lugubris (Colosi, 1921) - type species Colosius pulcher (Colosi, 1921) - synonym: Colosius propinquus (Colosi, 1921)Thomé J. W., dos Santos P. H. & Pedott L. (1997). "Annotated list of Veronicellidae from the collections of the Academy of Natural Sciences of Philadelphia and the National Museum of Natural History". Proceedings of the Biological Society of Washington 110(4): 520-536. Colosius n. sp. from Colombia and Ecuador - a pest on coffee and on flowersGomes S. R., Robinson D. G., Zimmerman F. J., Obregon O. & Barr N. B. (2012). "Morphological and molecular analysis of the Andean land slugs Colosius n. sp., a newly recognized pest of cultivated flowers and coffee from Colombia and Ecuador, and Colosius pulcher (Colosi, 1921) (Gastropoda: Veronicellidae)". American Malacological Society 2012 Program and Abstracts, page 25. PDF. accessed 13 June 2012.
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