Ixobrychiphilus wallacei, Skoracki & Zmudzinski & Solarczyk, 2017

Skoracki, M., Zmudzinski, M. & Solarczyk, P., 2017, Ixobrychiphilus, a new genus of the family Syringophilidae (Acariformes: Prostigmata), Acarologia 57 (2), pp. 269-273 : 270-272

Ixobrychiphilus wallacei n. sp.

( Figures 1 and 2 )

Zoobank: 8B7362D8-01C7-4376-B217-2EAE1B473E95

Description — Female: Total body length 500 in holotype (490 – 540 in 6 paratypes). Gnathosoma. Infracapitulum punctate. Movable cheliceral digit 115 (105 – 115) long. Each medial branch of peritremes with 1 chamber, each lateral branch with 4- 5 chambers. Stylophore punctate, with striate ornament, 150 (140 – 150) long. Idiosoma. Propodonotal shield weakly sclerotized, anterior and posterior margins indiscernible, bearing bases of setae vi, ve, si, se, and c1, surface of this shield punctate in middle part. Bases of setae se situated anterior to level of setae c1. Hysteronotal shield apunctate, situated between bases of setae d1 and e2, not fused to pygidial shield. Pygidial shield well sclerotized, apunctate, with incision on anterior margin. Setae

f2 2.8–3.6 times longer than f1. Length ratio of setae ag1: ag2: ag3 1:1:1–1.5. Genital plate absent. Pseudanal setae ps1 and ps2 subequal in length. Genital setae g1 and g2 subequal in length. Legs. Coxal fields I-IV apunctate, well sclerotized. Fan-like setae p’ and p" of legs III and IV with 10 tines. Setae 4c about twice as long as 4b. All solenidia of leg I subequal in length. Lengths of setae: vi 30 (25 – 50), ve 80 (75 – 90), si 135 (120 – 135), se 195 (180 – 210), c1 180 (170 – 220), c2 180 (160 – 190), d1 120 (110 – 130), d2 145 (130 – 145), e2 115 (90 – 120), f1 30 (25 – 30), f2 85 (85 – 90), h1 20 (20 – 30), h2 310 (280 – 310), ps1 20 (15 – 25), ps2 (15 – 25), g1 30 (25 – 35), g2 30 (25 – 35), ag1 (70 – 80), ag2 (80 – 90), ag3 110 (80 – 120), l’RIII 40 (35 – 40), 4b (40 – 45), 4c (90).

Male: Not found.

Type material — Female holotype and 6 female paratypes (Reg. No. AMU-SYR.517) from quills of contour feathers of Ixobrychus cinnamomeus (Gmelin) ( Pelecaniformes : Ardeidae ), China, Middle Course of Yangtze River, 26 Sept. 1899, coll. G. Haberer.

Type material deposition — All type specimens are deposited in the AMU, except 1 female paratype in the ZSM .

Etymology — The species is named in honor of a British naturalist, biologist, explorer, and geographer, Alfred Russel Wallace.

Figures

FIGURE 1: Ixobrychiphilus wallacei n. sp., female: A – dorsal view; B – ventral view.

FIGURE 2: Ixobrychiphilus wallacei n. sp., female: A – gnathosoma in ventral view; B – peritremes; C – solenidia of leg I; D – tarsus I in dorsal view; E – tarsus I in ventral view; F – tarsus II in ventral view; G – tarsus III in lateral view.