Troglocaris (Troglocaris) anophthalmus legovici, Jugovic, Jure, Jalžić, Branko, Prevorčnik, Simona & Sket, Boris, 2012

Jugovic, Jure, Jalžić, Branko, Prevorčnik, Simona & Sket, Boris, 2012, Cave shrimps Troglocaris s. str. (Dormitzer, 1853), taxonomic revision and description of new taxa after phylogenetic and morphometric studies, Zootaxa 3421, pp. 1-31 : 13

Troglocaris (Troglocaris) anophthalmus legovici ssp. nov.

Synonymy: Troglocaris (Troglocaris) – the Istra putative phylogroup Zakšek et al., 2009

Type locality: Croatia, Pula, Nimfej izvor (spring).

Type material: Male: adult male (inv. number 1770, holotype), CL 5.7 mm, Nimfej izvor, Pula, Croatia, 25th January 2011, collected by B. Jalžić, specimen partly dissected and stored in 96 % ethanol. Females from the type locality: 2 juvenile females: TB082 (CL 5.6 mm), TB084 (CL 5.7 mm). Type material stored in Hrvatski prirodoslovni muzej in Zagreb ( Croatia).

Other specimens examined: Kršan (female, CL 6.2 mm). Molecular analysis only: Opatija, Medveja (juvenile male); Vrsar, Klariča jama (female, only tissue available). Voucher numbers and GenBank identification numbers for COI and ITS 2 genes are in Appendix C6, where available.

Description of the holotype (only characters that are used for differential descriptions of other herein described taxa are included, see also Table 1 and Appendix B1): Small specimen, CL: 5.7 mm. Rostrum straight and narrow, with 4 ventral teeth. Article 3 of antenna I length (a13a12) 50 % of article 2 length. Antenna II scaphocerite narrow (a2s2s1), its width 34 % of scaphocerite length; distal point of scaphocerite 9.5 % of scaphocerite length (a2s3s1). Pereopod I article 7 length (pr1da) 17 % of pereopod I length; pereopod III article 7 length (pr3da) 11.5 % of pereopod III length. Pereopod I article 6 length (pr1che) 22 % of CL. Pereopod III article 3 long (pr3ia), its length 10.5 % of pereopod III length. The comb on pereopod V article 7 with small number of setae (P5D), only 30. Pereopod V article 7 rather short (p5dp), its length 18 % of pereopod V article 6 length. Uropod exopodite narrow (u21, u2cl), its width 29 % of uropod exopodite length and 18.5 % of CL. Telson long (te1s6), its length 97 % of pleonite VI length. Pleopod I endopodite without retinacular hooks on appendix interna. Number of setae on pleopod I endopodite inner margin (PP1 ENS) small, only 21. Article 3 of pereopod III with 4 spiniform setae along its inferior margin and at inferodistal angle. Females: no adult females from the type locality were available, but see Appendix B2 for scarce morphometric data.

Etymology: named after the well known Istrian caver and our friend Silvije Legoviċ.

Remarks and distribution: Only populations from W and E coast of the central Istra peninsula ( Croatia), S from rivers Mirna and Raša, together with a sample from the southern tip of peninsula (near Pula) could be molecularly identified as belonging to the Istra putative phylogroup ( Figure 1 ). In Kršan (in a spring in the tunnel draining the former lake of Čepiċ), it was found in syntopy with T. (T.) planinensis , where the latter was more numerous. Near Pula, T. (T.) planinensis was also found (but not in the same locality). So these populations might represent separate biological species either on their own or as a member of herein described T. (T.) anophthalmus .

Figures

FIGURE 1. Distribution map of eight taxa of the subgenus Troglocaris s. str., with phylogroup / subgroup designation (in brackets, as in Zakšek et al. 2009). Different symbols denote taxa, their coloration denotes method of the analysis: black – molecular and morphometric analysis; grey – morphometric analysis; white – molecular analysis.