Hygrobates (Hygrobates) niloticus Walter, 1922

Smit, Harry, 2021, Water mites from West Africa (Acari: Hydrachnidia), Acarologia 61 (3), pp. 700-746 : 713-714

Hygrobates (Hygrobates) niloticus Walter, 1922

( Figure 7 A-C)

New record. Ghana. 0/1/0, unnamed stream crossing road to Ankasa NP, 5°11.435′ N 2°39.429′ W, 20 m a.s.l., 27 Feb. 2011.

Description. Female. Integument finely lineated, only visible at higher magnification. Idiosoma dorsally 591 long and 462 wide, ventrally 640 long. Cx-I fused medially. Anterior coxae tapering and extending far posteriorly, reaching almost posterior margin of Cx-IV. Posterior to anterior coxae a small area of secondary sclerotization. Suture line Cx-III/IV incomplete, Cxgl-4 located near this suture line. Posterior to Cx-IV an area of secondary sclerotization, not incorporating Vgl-1. Genital field 144 long and 259 wide, with three pairs of acetabula. Pregenital sclerite small, surrounded by a large area of secondary sclerotization. Length of P1–5: 28, 118, 76, 104, 40. P2 anteroventrally with several denticles, ventral margin of P3 with about five relatively large denticles. Length of I-leg-4–6: 118, 104, 74. First leg segments rather stocky, I-leg-5 anteriorly without stout setae.

Distribution. Sudan ( Walter 1922), Ghana (this study).

Figures

Figure 7 Hygrobates(Hygrobates) niloticus Walter, female. A - venter; B – palp; C – I-leg-4–6. Scale bars: A = 100 µm, B-C = 50 µm.