Trogleluma Vandel, 1946

Reboleira, Ana Sofia P. S., Gonçalves, Fernando, Oromí, Pedro & Taiti, Stefano, 2015, The cavernicolous Oniscidea (Crustacea: Isopoda) of Portugal, European Journal of Taxonomy 161, pp. 1-61 : 50

Genus Trogleluma Vandel, 1946

Remarks

Trogleluma was erected by Vandel (1946) as a subgenus of Troglarmadillidium Verhoeff, 1900 to include the new species Troglarmadillidium (Trogleluma) machadoi from two caves in South Portugal (see below). At present, the genus Troglarmadillidium only includes the monospecific subgenera Troglarmadillidium and Trogleluma , with the species T. (Troglarmadillidium) stygium (Verhoeff, 1900) from Herzegovina, and T. (Trogleluma) machadoi . Both these species have a depigmented body, are blind, have no schisma at the postero-lateral corner of pereonite 1, a triangular telson, and uropods with the exopodite flattened, longer than wide. The two subgenera show quite distinct morphological traits in the cephalic structure: in Troglarmadillidium the triangular frontal scutellum of the cephalon, frontal line and antennal lobes are missing, while in Trogleluma these structures are present. These characters have been confirmed after the examination of a fremale specimen of T. (Troglarmadillidium) stygium from Montenegro ( Crna Gora, Danilovgrad, Tunjevo, Milojevića vrela, 26 Apr. 1997, leg. and det. I. Karaman). On the basis of these characters we consider Trogleluma as a distinct genus from Troglarmadillidium . Trogleluma includes the type species, Trogleluma machadoi , and a few undescribed new species from Sardinia and Tuscany in Italy ( Taiti 2007, unpublished results).