Kongsbergia (s. str.) angusta Walter, 1947

Gerecke, Reinhard, 2014, Studies on European species of the water mite family Aturidae Thor (Acari: Hydrachnidia), Zootaxa 3841 (1), pp. 1-46 : 22

Kongsbergia (s. str.) angusta Walter, 1947

Kongsbergia cf. angusta Gerecke & Di Sabatino 2013

Material examined. Type series: Holotype ♂, NHMB 4664 , " Kongsbergia angusta Typus ♂, Kaltbrunnental , Kiesbank , 24.10.1943, Walter XV/36"; paratypes, same data as holotype: NHMB 4665 ♂ "XV/37", NHMB 4666 ♀ "XV/38", NHMB 4667 ♀ "XV/39", NHMB 4668 dn "XV/40".

Germany: D 496 (1/0/0). France: Corsica, F 39 Int (1/0/0).

Remarks. Gerecke & Benfatti (2013) give detailed morphological information, measurements and figures of specimens from Corsica attributed to the species with a question mark. These, and the further Corsican male recorded here agree well with the morphology of the type series and other central European material. Male K. angusta are similar to K. ruttneri in the shape and setation of IV-L-5, having a prominent subrectangular extension on which the proximoventral seta inserts. In both species, this seta is flattened, very irregular, often triangular in shape and has its maximum width away from setal base. They are best distinguished in the shape of the palp (rather stout in K. angusta , L/H ratio <3.5, more slender in K. ruttneri , L/H ratio> 3.5). Females found together with male K. angusta differ from K. ruttneri in the relatively short P-4 (L P-2+3> P-4) with the ventral margin near proximoventral seta protruding (in K. ruttneri L P-2+3 <P-4, ventral margin nor protruding). They are furthermore characterized by a rather slender idiosoma and the ventral margin of P-2 bearing more pointed projections and a P- 2/3 length ratio of about 2.0.