Arrenurus inexploratus Viets, 1930

Zawal, Andrzej, 2008, Morphological characteristics of water mite larvae of the genus Arrenurus Dugès, 1834, with notes on the phylogeny of the genus and an identification key, Zootaxa 1765 (1), pp. 1-75 : 62

Arrenurus inexploratus Viets, 1930

( Fig. 45 )

Material examined: 10 larvae deriving from 10 females.

Larvae large: idiosoma 234–254 µm long.

Dorsum: Dp large (DpL: 216–242 µm; DpW: 186–200 µm), egg-shaped, widest at mid-length. Antero-lateral indents slightly obtuse-angled, very small (about 1/6 of plate’s length). DpW/Mp1-Mp1 5.3. Lp2, Mh1 smooth. Mp1-Mp1 short (35–38 µm), much shorter than Mp2-Mp2 (50–58 µm); Mp1-Lp2 intermediate (34– 41 µm). Venter: Median margins of CpI, CpII, CpIII 71–76, 34–38, 50– 54 µm long, respectively, their ratio 2:1:1.5. C2, V 3 bipectinate; C1, C3, C4 pectinate. C1-CpIm (19–22 µm) about 2/3 of C4-CpIIIm (26–32 µm). C1-C2 intermediate (42–46 µm). Expp rhomboid, somewhat wider than long. Exp located below plate’s midpoint and below E2. Palps: PIII 1 bipectinate. PV3 pectinate, PV6 thick. Chelicerae: First segment elongated (82–90 µm), narrowing anteriorly, margins parallel, distal part slightly curved. Legs: Shorter than body; LI= LII < LIII Fig. 6). ITi8 smooth, short, thick; IIGe2, IIGe4, IIIGe4, IIITi6 bipectinate.

Figures

FIGURE 45. Arrenurus inexploratus: A—ventral side, B—dorsal plate, C—excretory pore plate, D—pedipalp (scale bars: A, B—100 µm; C, D—20 µm).