Parvidrilus spelaeus, Martinez-Ansemil, Sambugar & Giani, 2002

Martínez-Ansemil, Enrique, Châtelliers, Michel Creuzé Des, Martin, Patrick & Sambugar, Beatrice, 2012, The Parvidrilidae - a diversified groundwater family: description of six new species from southern Europe, and clues for its phylogenetic position within Clitellata (Annelida), Zoological Journal of the Linnean Society 166 (3), pp. 530-558 : 546-547

PARVIDRILUS SPELAEUS MARTÍNEZ- ANSEMIL, SAMBUGAR & GIANI, 2002

New material: Mine of Ponte Vajo Falconi , Italy ( PASCALIS LES 060 ; 10°59′07′′E; 45°39′36′′N), pools of percolating water, 2002, leg. Stoch F., Tomasin G., one specimen ; Bus del Cao cave, Italy ( PASCALIS LES 001 ; 10°54′48′′E; 45°35′36′′N), subterranean brook, 2002, leg. Stoch F., Tomasin G., two specimens ; Buso del Progno cave, Italy ( PASCALIS LES 003 ; 10°55′02′′E; 45°36′28′′N), subterranean brook, 2002, leg. Stoch F., Tomasin G., one specimen ; Covolo della Croce cave , Italy ( PASCALIS LES 099 ; 11°07′16′′E; 45°36′43′′N), rimstone pools, 2002, leg. Stoch F., Tomasin G., one specimen ; Monte Capriolo cave , Italy ( PASCALIS LES 195 ; 11°04′52′′E; 45°35′38′′N), rimstone pools, 2002, leg. Stoch F., Tomasin G., four specimens ; Buso della Volpe cave , Italy ( PASCALIS LES 149 ; 11°12′52′′E; 45°36′48′′N), small pools in gravel, 2002, leg. Stoch F., Tomasin G., two specimens ; Montorio , via del Lanificio, Italy ( PASCALIS LES 131 ; 11°03′59′′E; 45°27′34′′N), hyporheic site, Bou-Rouch pump, 2002, leg. Stoch F., Tomasin G., two specimens ; spring near Jelenska jama, Slovenia ( PAS- CALIS KRI 097 ; 14°21′19′′E; 45°55′05′′N) 2002, leg. Brancelj A., one specimen ; spring near Žumerju , Slovenia ( PASCALIS KRI 005 ; 14°35′47′′E; 45°53′16′′N), 2002, leg. Brancelj A., one specimen ; Pajsarjeva cave , Slovenia; (14°15′56′′E; 45°59′52′′N), subterranean brook, 2009, leg. Gasparo F., Sambugar B., two specimens .

Description: The new material of P. spelaeus enables us to confirm the attachment of the spermathecal duct to the anterior part of segment XIII, and very thin vasa deferentia joining atria proximally. The so-called diffuse prostate surrounding the atria referred to in Martínez-Ansemil et al. (2002: fig. 12) is now interpreted as a large peritoneal layer, not observed in fully developed individuals.

COI sequence: EMBL accession number: HE800202 ( Pisoliti cave , Trieste, Italy) .

Distribution and habitat: Presently, the known distribution of P. spelaeus is limited to the Alpine district of northern Italy and extends into the Slovenian Dinaric region, where it was found in several phreatic and hyporheic habitats: from small pools of percolating water to streamlets and in cave lakes, springs, and rock aquifers (see also Martínez-Ansemil et al., 2002).