Selenonycha chardriiformicus, Skoracki, 2011

Skoracki, Maciej, 2011, Quill mites (Acari: Syringophilidae) of the Palaearctic region 2840, Zootaxa 2840 (1), pp. 1-414 : 276-278

Selenonycha chardriiformicus sp. nov.

( Figs. 203 and 204 )

Type host: Larus genei Breme ( Charadriiformes : Laridae ). Type locality: Egypt.

FEMALE (holotype). Total body length 1015 (1000–1180 in 5 paratypes). Gnathosoma . Infracapitulum apunctate. Sylophore apunctate, 320 (300–320) long. Movable cheliceral digit, 225 (225–230) long. Each medial branch with 4–5 chambers, each lateral branch with 7–9 chambers. Idiosoma . Propodonotal shield, apunctate, weakly sclerotized, bearing bases of setae vi, ve, si and c1. Length ratio of setae vi: ve: si:c2 1:2.2–2.8:4.3–4.8:3.7–3.8. Setae si and c2 situated at same transverse level. Hysteronotal shield fused to pygidial shield, apunctate, bearing bases of setae d1 and terminal setae, except setae f2. Setae d1 about 1.5 times closer to d2 than to e2. Hysteronotal setae d1, d2, e2 subequal in length. Terminal setae f2, h1, h2 subequal in length, all 1.3–1.5 times longer than setae f1. Aggenital setae longer than 220. Genital plate restricted to genital setae. Both genital setae subequal in length. Both pseudanal setae subequal in length. Coxal fields I–IV apunctate. Legs. Fan-like setae p’ and p” with 17–19 tines. Setae tc”III–IV 1.8–2 times longer than tc’III–IV. Lengths of setae: vi 65 (65–75), ve 180 (150–190), si 310 (280– 305), se 280 (250–270), c1 280 (260–300), c2 250 (250–270), d1 245 (195–230), d2 245 (195–230), e2 235 (205– 220), f1 355 (345), f2 500 (465–490), h1 555 (465–555), h2 (465–595), ps1 and ps2 (80–95), g1 and g2 115 (95– 115), ag1 (295–310), ag2 (200–270), ag3 (355–425), l’RIII 180 (180–190), l’RIV (185), tc’III–IV 65 (65–80), tc”III–IV 130 (125–145), 3b 235 (180–215), 3c 245 (200–260).

MALE. Unknown.

Type material. Larus genei Breme ( Charadriiformes : Laridae ): female holotype, 6 female and 2 nymph paratypes ( AMU –SYR.97); EGYPT, Lake Manzala area , 4 January 1984, coll. S.M. Goodman.

Type material deposition. Holotype deposited in the AMU, paratypes in the AMU, RMCA and UMICH.

Non-type material. Charadrius placidus Gray and Gray (Charadriidae) : 2 females ( AVB 05–0715–038); RUSSIA, Vladivostok, Kraskino (42°42'33"N, 130°46'56"E), 1 August 1947, coll. N. Gorchakovskaya. Larus ridibundus Linnaeus (Laridae) : 2 females ( AMU –SYR.99); GERMANY, Saxony, Regis, 31 December 2002, coll. Synnatzschke; 2 females ( AMU –SYR.99A); GERMANY, Leipzig, 7 September 2002, coll. Synnatzschke. Material deposited in the AMU. Philomachus pugnax (Linnaeus) (Scolopacidae) : 1 female ( AMU –SYR.100) (sec.); POLAND, Warminsko-Mazurskie, Satopy-Samulewo near Olsztyn, May 2001, coll. A. Badek. Material deposited in the AMU.

Differential diagnosis. This new species is distinguished from only one previously known species S. baltoda by the following characters: in females of S. charadriiformicus , the length ratio of setae vi: ve: si:c2 1:2.2–2.8:4.3– 4.8:3.7–3.8; fan-like setae p’ and p” of legs III and IV are with 17–19 tines. In females of S. baltoda , the length ratio of setae vi: ve: si: c2 is 1:4:8:8; fan-like setae p’ and p” of legs III and IV are with 14–15 tines.

Etymology. The name refers to the name of host order— Charadriiformes .

Host range and habitat. Oligoxenous species inhabiting quills of secondary and covert feathers of four charadriiform hosts: Larus genei , L. ridibundus (Laridae) , Charadrius placidus (Charadriidae) , and Philomachus pugnax (Scolopacidae) .

Distribution. Germany, Poland, Russia, and Egypt.

Figures

FIGURE 203. Selenonycha charadriiformicus sp. nov., female. A, dorsal view; B, ventral view.

FIGURE 204. Selenonycha charadriiformicus sp. nov., female. A, hypostomal apex; B, tarsus III in ventro-lateral view; C, solenidia of leg I; D, peritremes. Scale bars: B = 50 µm; A, C, D = 20 µm.