Trogleluma pilosa, Taiti & Montesanto, 2018

Taiti, Stefano & Montesanto, Giuseppe, 2018, New species of subterranean and endogean terrestrial isopods (Crustacea, Oniscidea) from Tuscany (central Italy), Zoosystema 40 (11), pp. 197-226 : 215

publication ID	https://doi.org/ 10.5252/zoosystema2018v40a11
publication LSID	urn:lsid:zoobank.org:pub:E8AFD7E7-4FDD-408E-BB77-75E61F2BF22F
DOI	https://doi.org/10.5281/zenodo.3810285
persistent identifier	https://treatment.plazi.org/id/40EECF8F-2A3C-4FB0-9414-F21F6A4B7267
taxon LSID	lsid:zoobank.org:act:40EECF8F-2A3C-4FB0-9414-F21F6A4B7267
treatment provided by	Felipe
scientific name	Trogleluma pilosa
status	sp. nov.

Treatment

Trogleluma pilosa View in CoL n. sp.

( Figs 15-17 View FIG View FIG View FIG , 21F View FIG )

urn:lsid:zoobank.org:act:40EECF8F-2A3C-4FB0-9414-F21F6A4B7267

“ Paraschizidium View in CoL ” sp. – Taiti & Ferrara 1989: 81, fig. 5.

Trogleluma View in CoL 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 ) GoogleMaps . Paratypes. 3 ♀, same data as holotype ( MZUF 1772 ); GoogleMaps 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 ); GoogleMaps 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 ) GoogleMaps .

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 View FIG ), dorsally covered with long piliform scale-setae ( Fig. 15B View FIG ); one line of noduli laterales per side on pereonites, more or less at the same distance from lateral margin ( Fig. 15A View FIG ). Cephalon ( Fig. 15C, D View FIG ) with a V-shaped scutellum and continuous frontal line; antennary lobes oblique; eyes absent. Pereonite 1 ( Fig. 15E View FIG ) with posterior margin slightly concave at sides; no schisma on postero-lateral margin and with small ventral tooth. Telson ( Fig. 15F View FIG ) subtriangular, as wide as long, with slightly concave sides and rounded apex. Antennula ( Fig. 15G View FIG ) of three articles, second article shortest, two subapical rows with nine aestethacs in total and pointed apex. Antenna ( Fig. 15H View FIG ) 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 View FIG ) with molar penicils semidichotomized and 2+ 3 penicils on the left and 1 + 3 on the right mandible. Maxillula ( Fig. 16C View FIG ) outer branch with 4+ 6 (5 cleft) teeth, inner branch with two slender penicils. Maxilla ( Fig. 16D View FIG ) with bilobed and setose apex, outer lobe wider than inner one. Maxilliped ( Fig. 16E View FIG ) endite with two triangular terminal spines, one subterminal strong seta. Pleopod 1 and 2 exopods with monospiracular covered lungs. Uropod ( Fig. 16F View FIG ) protopod as long as exopod; exopod rectangular, flattened, longer than wide with parallel sides; endopod slightly longer than exopod.

Male

Pereopod 1 ( Fig. 17A View FIG ) with some strong setae on sternal margin of merus and carpus. Pereopod 7 ( Fig. 17B View FIG ) ischium with concave sternal margin. Pleopod 1 ( Fig. 17C View FIG ) 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 View FIG ) exopod triangular much longer than wide; endopod elongated and much longer than exopod. Pleopod 3-5 exopods as in Fig. 17 View FIG 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 View FIG View FIG View FIG with Reboleira et al. 2015: figs 33, 34). The record of this new species considerably enlarges the distribution of the genus.