Studies on European species of the water mite family Aturidae Thor (Acari: Hydrachnidia) Author Gerecke, Reinhard text Zootaxa 2014 3841 1 1 46 journal article http://dx.doi.org/10.11646/zootaxa.3841.1.1 07cca84d-e413-47d9-9ea5-5d24be4dce1b 1175-5326 286746 5FAADB3D-2359-453F-8BF5-1C2A33C6D178 Kongsbergia (s. str.) dentata Walter, 1947 Fig. 16 Material examined. Type series: Holotype ♂ , NHMB 4705 , " Kongsbergia dentata Typus ♂, Kaltbrunnental , Kiesbank , 24.10 . 1943 , Walter XV/ 44 "; paratypes , same data as holotype: NHMB 4706 ♀ "XV/ 45 ", NHMB 4706 dn "XV/ 46 ". Germany : Harz, SMF 44617 (0/ 1 /0), D 486 ( 1 /0/0). France : Corsica , F 39 Int (0/ 2 /0). Italy : Reggio Emilia, I 1375 ( 1 / 1 /0); Sardinia, I 389 Int (0/ 1 /0); Sicily, I 493 ( 1 / 1 /0), I 514 Int ( 2 / 1 /0), I 515 Int (0/0/ 1 )?, I 550 Int (0/ 1 /0), I 646 Int (0/ 1 / 1 ); Switzerland : Ticino, Rensburg coll. NHMB 4710 (0/ 1 /0). First records from Italy . Remarks. This species is not confusable due to the characteristics of the palp (in both sexes slender, P- 4 L/H ratio 3.7–4.3 , P- 4 in males with a pointed projection, in females P- 2 without ventral projections and P- 4 ventral setae inserting distally). Furthermore, the male IV-L is characteristic (IV-L- 4 distal setae pectinate, one of these very long; IV-L- 5 proximal and central ventral setae near centre of segment, distoventral seta short, peg-like; IV-L- 6 with smooth ventral margin smooth). A small dent on the anterolateral margin of the Cx-I is name-giving. Measurements of three males ( NHMB 4705, 4709, SMF 52038 ) and three females ( NHMB 4706, 4710, SMF 44617 ): Males: Idiosoma L/W 390–420 / 235–270 (ratio 1.4–1.8 ), dL 370–380 ; IV-L (L/H, L/H ratio): IV-L-4, 85– 88 / 38–45 , 1.9–2.3 ; IV-L-5, 80– 85 / 40–46 , 1.7–2.1 ; IV-L- 6, 128 – 133 / 38–40 , 3.2–3.5 ; L ratio IV-L- 4 / 5 , 1.0; IV- L- 4 / 6 , 0.7 ; IV-L- 5 / 6 , 0.6 . Palp measurements (L/H, L/H ratio, relative L % total L): P-1, 23– 25 / 18–23 , 1.0– 1.3 , 8–9 ; P-2, 70– 85 / 35–38 , 1.9–2.3 , 27–29 ; P-3, 25– 30 / 24–28 , 1.0– 1.1 , 10–11 ; P-4, 93– 108 / 24–25 , 3.7–4.3 , 35–36 ; P- 5, 48– 50 / 11–13 , 4.0– 4.2 , 17–18 . L ratio P- 2 /P- 3 , 2.6 –3.0; P- 2 /P- 4 , 0.75–0.8 ; P- 3 /P- 4 , 0.27–0.30 ; P 4 /P- 2 + 3 , 0.9 . Females: Idiosoma L/W 430–450 / 280–300 (ratio 1.4–1.6 ), dL 380–420 ; Palp measurements (L/H, L/H ratio, relative L % total L): P-1, 23– 25 / 18–23 , 1.0– 1.3 , 8–9 ; P-2, 70– 85 / 35–38 , 1.9–2.3 , 27–29 ; P-3, 25– 30 / 24–28 , 1.0– 1.1 , 10–11 ; P-4, 93– 108 / 24–25 , 3.7–4.3 , 35–36 ; P-5, 48– 50 / 11–13 , 4.0– 4.2 , 17–18 . L ratio P- 2 /P- 3 , 2.6 –3.0; P- 2 /P- 4 , 0.75–0.8 ; P- 3 /P- 4 , 0.27–0.30 ; P 4 /P- 2 + 3 , 0.9 .