Kongsbergia ermani, Gülle & Boyacı, 2021

Gülle, Pınar & Boyacı, Yunus Ömer, 2021, New Water Mite Species Of The Genus Kongsbergia (Acari, Hydrachnidia, Aturidae) From Turkey, Acta Zoologica Academiae Scientiarum Hungaricae 67 (1), pp. 1-6 : 2-3

Kongsbergia ermani sp. n.

Type material. Holotype male, a fast-flowing stream with sand and gravel bottom, 22.06.2008, 37 o 44’44’’N, 31 o 01’38’’E, 1188 m a.s.l., Köprüçay River , Isparta, Turkey ( Fig. 1 ) . Paratypes: 3/0 same data as holotype, leg. Y. Ö. Boyacı.

Diagnosis. P-2 very enlarged, a large thin long projection in the ventral and a small projection in the distoventral. IV-L-5 shortened, ventral margin with one projection, proximal seta away from segment base and proximal seta bent forward and thinner than the central seta on the projection. The distoventral seta, which is located between the central seta and the tip of the segment, is thick and small. There is a long and thin seta above the distoventral seta and a small, thick and curved seta next to the long seta. IV-L-6 extremely enlarged and strong claws.

Male. Holotype, in parentheses variability of the paratypes given as mean (n = 3). Idiosoma enlarged anteriorly, narrowed posteriorly, L/W 370 (375) / 250 (253) ( Fig. 3 b ), lenses with three-pieces, preantenniform setae distance L 35 (36), mouth opening L/W 110 (112) / 75 (76) ( Fig. 3 a ), capitulum L 145 (147) ( Fig. 4 a ).

Commissure except for Cx-1 and 2 completely missing, with only vague scars ( Fig. 3 a ).

P-2 very enlarged, a large thin long projection in the anteroventral and a small projection in the distoventral P-1-5 L: 22(23)-108(110)-47(48)-104(106)-40(40) = 321, H: 29(29)- 97(98)-60(59)-30(30)-17(17) ( Fig. 4 a ).

IV-L-5 shortened, ventral margin with one projection, proximal seta away from segment base and proximal seta bent forward and thinner than the central seta on the projection (not pectinate). The distoventral seta, which is located between the central seta and the tip of the segment, is thick and small. There is a long and thin seta above the distoventral seta and a small, thick and curved seta next to the long seta. IV-L-6 extremely enlarged and strong claws. ( Figs 4 b,c ).

I-L 48(48)-64(64)-53(54)-58(59)-76(76)-93(93) = 392(394), II-L 48(49)-66(67)-55(55)- 59(60)-68(68)-98(98) = 394(397), III-L 50 (51)-60(60)-54(55)-65(66)-88(89)-107(107) = 424 (427), IV-L 85(85)-58(59)-73(73)-78(79)-82(82)-84(85) = 460(463).

The gonopore located in the posterior part of the abdominal plate and surrounded by a round chitin ring ( Fig. 3a ).

Etymology. The species name is given in honour of the water mite specialist Prof. Dr. Orhan Erman.

Remarks. The closest species to Kongsbergia ermani is Kongsbergia simillima K. Viets, 1949. The features that distinguish it from this species are as follows: (1) P-2 basal half of ventral margin has 2 projections (K. simillima has 3 projections), P-4 near ventral setae insertion forming an obtuse angle, from here to tip concave in K. simillima (2) The proximal seta in K. ermani is longer and not pectinate (ventrally pectinate in K. simillima) on IV-L-5 (3) distoventral seta K. simillima is also very small curved and at the end of the segment. The distoventral seta in K. ermani , which is located between the central seta and the tip of the segment, is thicker and bigger (4). IV-L-6 is wider and shorter than K. simillima (L/H ratio 3.4), and its L/H ratio is 1.63 (5) forward elongated idiosoma, wide mouth opening, gonopore with round chitin ring in K. ermani .

Figures

Fig. 1. Habitat of Kongsbergia ermani sp. n.

Fig. 3. Kongsbergia ermani sp. n., male a) idiosoma, ventral view b) idiosoma, dorsal view

Fig. 4. Kongsbergia ermani sp. n., male a) gnathosoma b) IV-L outside view c) IV-L inside view