Picobia cetti, Skoracki, 2011

Skoracki, Maciej, 2011, Quill mites (Acari: Syringophilidae) of the Palaearctic region 2840, Zootaxa 2840 (1), pp. 1-414 : 357-359

Picobia cetti sp. nov.

( Figs. 266 and 267 )

Type host: Cettia cetti (Temminck) ( Passeriformes : Sylviidae ). Type locality: Turkey.

Description. NON-PHYSOGASTRIC FEMALE (holotype). Total body length, 450 (380 in 1 paratype). Gnathosoma . Hypostomal apex rounded. Infracapitulum apunctate. Peritremes M-shaped, each medial branch with 2 chambers, each lateral branch with clearly visible 4–5 chambers. Movable cheliceral digit edentate in posterior part. Stylophore 150 (150) long. Idiosoma . Propodonotal shield divided into 3 fragments, unpaired and apunctate median shield weakly developed, bearing bases of setae vi and pair of lateral, narrow shields, bearing bases of setae ve, si and se. Setae vi situated slightly posterior to level of setae ve. All propodonotal setae lightly beaded. Length ratio of setae vi: ve: si 1:1:2. Setae c1 located anterior to level of setae se. Setae d1 situated equidistant to setae d2 and e2 or slightly closer to e2 than to d2. Setae d2 1.8 times longer than e2. Pygidial shield well sclerotized divided longitudinally, densely punctate. Setae f2 slightly (1.2 times) longer than f1. Setae h1 and f1 subequal in length. Alveoles of setae 3a–3a not coalesced. Genital plate present, densely punctate. Aggenital setae ag1 and ag2 situated at same transverse level. Length ratio of setae ag1: ag2 1–1.2:1. Setae ps2 1.5 times longer than ps1. Setae g1 hair-like, situated on genital lobes. Coxal fields I–IV well developed, apunctate. Setae 3c 2.8–3.8 times longer than 3b. Legs. Most of dorsal setae of legs I and II lightly beaded. Antaxial and paraxial members of claws pair III and IV unequal in size. Setae tc’ and tc” of legs III–IV subequal in length. Lengths of setae: vi 80 (80), ve 80 (80), si 165 (160), c1 205 (205), c2 180 (190), se (185), d1 105 (100), d2 145 (140), e2 85 (80), f1 45 (40), f2 (50), h1 40, ps1 30, ps2 20, g1>25, ag1 60 (60), ag2 50 (55), ag3>80, l’RIII and l’RIV 25 (25), tc’III–IV and tc”III–IV (35), 3b 20 (25), 3c 75 (70).

MALE. Unknown.

Type material. Cettia cetti (Temminck) ( Passeriformes : Sylviidae ): female holotype (non-physogastric form) and 1 female paratype (non-physogastric form) ( AMU –SYR. 286) (bod.); TURKEY, Aras , April 2004, coll. A. Badek.

Type material deposition. All type material deposited in the AMU .

Etymology. The name cetti refers to the specific name of the host.

Differential diagnosis. P. cetti is morphologically similar to P. currucae . In females of both species, the hypostomal apex is rounded; terminal setae f1 and h1 are subequal in the length; aggenital setae ag1 and ag2 are situated at the same transverse level; the genital lobes are well developed and bear bases of the genital setae; the genital plate is densely punctate and the pygidial shield is divided longitudinally. This new species differs from P. currucae by the following characters: in females of P. cetti , propodonotal setae vi, ve, si are lightly beaded; setae si are twice as long as ve; setae d2 are 1.8 times longer than e2; the unpaired median propodonotal shield is present. In females of P. currucae , propodonotal setae vi, ve, si are strongly beaded; setae si are slightly (1.3 times) longer than ve; setae d2 are slightly (1.3 times) longer than e2; the unpaired median propodonotal shield is absent.

Host range and habitat. Monoxenous species inhabiting quills of body feathers of Cettia cetti .

Distribution. Turkey.

Figures

FIGURE 266. Picobia cetti sp. nov., female (non-physogastric form). A, dorsal view; B, ventral view.

FIGURE 267. Picobia cetti sp. nov., female. A, hypostomal apex; B, peritremes; C, propodonotal setae ve; D, posterior part of movable cheliceral digit; E, claw pair of leg III; F, coalesced alveoles of setae 1a; G, genito-anal region; H, solenidia of leg I.