Trogleluma pilosa Taiti & Montesanto 2018, n. sp.
Creators: name: Taiti, Stefano
name: Montesanto, Giuseppe
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Isopoda
Armadillidiidae
Trogleluma
Trogleluma pilosa

description: Trogleluma pilosa n. sp.
(Figs 15-17, 21F)
urn:lsid:zoobank.org:act: 40EECF8F-2A3C-4FB0-9414-F21F6A4B7267
“ Paraschizidium ” sp. – Taiti & Ferrara 1989: 81, fig. 5.
Trogleluma sp. – Taiti 2007: 96.
TYPE MATERIAL. — Holotype. ♂, Poggio Capalbiaccio, Prov. Grosseto, 42°27’N, 11°22’E, oak wood, under deeply enbedded stones, leg. F. Ferrara, S. Taiti and A. Poggesi, 5.XI.1984 (MZUF 1772). Paratypes. 3 ♀, same data as holotype (MZUF 1772); 1 ♀, Poggio Forane, Prov. Grosseto, 42°31’N, 11°22’E, downy oak wood, un- der deeply enbedded stones, leg. A. Poggesi, F. Ferrara and S. Taiti, 5.XI.1984 (MZUF 9676); 1 ♀, Parco Naturale della Maremma, near San Rabano, Prov. Grosseto, 42°38’06”N, 11°05’49”E, under deeply enbedded stones, leg. S. Vanni, 23.IV.1986 (MZUF 7639).
DIAGNOSIS. — A blind, colourless species of Trogleluma characterized by dorsal surface covered with piliform scale-setae, uropodal exopod with parallel sides, male pereopod 7 ischium with concave sternal margin, male pleopod 1 exopod triangular with broadly rounded apex and some setae near inner margin.
ETYMOLOGY. — From the Latin pilosus = hairy. The name refers to the dorsal surface covered with long piliform scale-setae.
DESCRIPTION
Maximum length: ♂, 5 mm; ♀, 5.5 mm. Body colourless, strongly convex, able to roll up into a perfect ball (Fig. 15A), dorsally covered with long piliform scale-setae (Fig. 15B); one line of noduli laterales per side on pereonites, more or less at the same distance from lateral margin (Fig. 15A). Cephalon (Fig. 15C, D) with a V-shaped scutellum and continuous frontal line; antennary lobes oblique; eyes absent. Pereonite 1 (Fig. 15E) with posterior margin slightly concave at sides; no schisma on postero-lateral margin and with small ventral tooth. Telson (Fig. 15F) subtriangular, as wide as long, with slightly concave sides and rounded apex. Antennula (Fig. 15G) of three articles, second article shortest, two subapical rows with nine aestethacs in total and pointed apex. Antenna (Fig. 15H) with fifth article of peduncle slightly longer than flagellum; second flagellar article about three times as long as first bearing three rows of aesthetascs. Mandibles (Fig. 16A, B) with molar penicils semidichotomized and 2+ 3 penicils on the left and 1 + 3 on the right mandible. Maxillula (Fig. 16C) outer branch with 4+ 6 (5 cleft) teeth, inner branch with two slender penicils. Maxilla (Fig. 16D) with bilobed and setose apex, outer lobe wider than inner one. Maxilliped (Fig. 16E) endite with two triangular terminal spines, one subterminal strong seta. Pleopod 1 and 2 exopods with monospiracular covered lungs. Uropod (Fig. 16F) protopod as long as exopod; exopod rectangular, flattened, longer than wide with parallel sides; endopod slightly longer than exopod.
Male
Pereopod 1 (Fig. 17A) with some strong setae on sternal margin of merus and carpus. Pereopod 7 (Fig. 17B) ischium with concave sternal margin. Pleopod 1 (Fig. 17C) exopod triangular with broadly rounded apex and some setae near inner margin; endopod with pointed apex, slightly bent outwards and bearing a row of short setae. Pleopod 2 (Fig. 17D) exopod triangular much longer than wide; endopod elongated and much longer than exopod. Pleopod 3-5 exopods as in Fig. 17 E-G.
REMARKS
Trogleluma was erected by Vandel (1946) as a subgenus of Troglarmadillidium Verhoeff, 1900 to include the new spe- cies Troglarmadillidium (Trogleluma) machadoi from caves in southern Portugal. Reboleira et al. (2015) raised it to genus level and redescribed the type species which is the only species in the genus presently known. The new species differs from T. machadoi in having piliform instead of triangular dorsal scale-setae, the telson with more rounded apex, the male pereopod 7 ischium with concave, instead of straight, sternal margin, the male pleopod 1 exopod with a more pronounced distal part, and the male pleopod 2 exopod with slightly, instead of deeply, concave outer margin (compare Figs 15-17 with Reboleira et al. 2015: figs 33, 34). The record of this new species considerably enlarges the distribution of the genus.
description: Published as part of Taiti, Stefano & Montesanto, Giuseppe, 2018, New species of subterranean and endogean terrestrial isopods (Crustacea, Oniscidea) from Tuscany (central Italy), pp. 197-226 in Zoosystema 40 (11) on page 215, DOI: 10.5252/zoosystema2018v40a11, http://zenodo.org/record/3741502