Kazakhithyas pectinatus, Smit, Harry, 2016

Smit, Harry, 2016, A new hydryphantid genus from the Tien Shan Mountains of Kazakhstan (Acari, Hydrachnidia: Hydryphantidae), Zootaxa 4200 (2), pp. 324-326 : 326

Kazakhithyas pectinatus n. sp.

Material examined. Holotype male, Rheohelocrene, 27 km S of Almaty, Ili-Alatau NP, Tien Shan Mountains, Kazakhstan, 43° 0 4.377 N 76° 59.233 E, alt. 2269 m a.s.l., 4-v-2016 ( RMNH) . Paratypes: 2 males, same data as holotype ( RMNH) .

Diagnosis. As for genus.

Description. Male: Idiosoma colourless in specimens fixed in Koenike-fluid, dorsally 761 (778–782) long and 437 (478) wide, ventrally 778 (802–842) long. Anteriorly to postocularia an area without papillae, which is probably a remnant of the median eye, but the latter clearly absent ( Fig. 1 ). Postocularia setae 48 long. Coxae in four groups, anterior corners of coxae with a group of 3–4 setae, margins of coxae with many short setae ( Fig. 2 ). Capitulum 152 long, with a very short rostrum ( Fig. 4 ). Genital field with three pairs of acetabula, anterior acetabulum 42 long, posterior acetabulum 38 wide. Genital flaps with four small setae. Pre-genital sclerite small. Excretory pore not sclerotized. Length of P1–5: 50, 82, 62, 144, 41; P2 with four dorsal setae and one medial seta. P4 ventrally slightly convex, with a anteriorly located ventral seta ( Fig. 5 ). Length of I-leg-4–6: 132, 142, 156 (till tip of segment). Length of IV-leg-4–6: 220, 216, 192 (till tip of segment). Each leg claw with two combs, one short and one long comb ( Figs. 7–8 ). Legs without swimming setae.

Figures

FIGURES 1 – 6. Kazakhithyas pectinatus n. sp., holotype male. 1 = dorsum; 2 = venter; 3 = coxae + genital field; 4 = integument structure anteriorly to postocularia, above in lateral view, below in dorsal view; 5 = capitulum + chelicere; 6 = palp. Scale bars = 50 µm.

FIGURES 7 – 8. Kazakhithyas pectinatus n. sp., holotype male. 7 = I-leg- 4 – 6; 8 = IV-leg- 4 – 6. Scale bars = 50 µm.