Picobia paludicola Skoracki and Kiljan, 2002

Skoracki, Maciej, 2011, Quill mites (Acari: Syringophilidae) of the Palaearctic region 2840, Zootaxa 2840 (1), pp. 1-414 : 354-356

Picobia paludicola Skoracki and Kiljan, 2002

( Figs. 263–265 )

Picobia paludicola Skoracki and Kiljan, 2002: 2 , figs. 1–10.

Type host: Acrocephalus paludicola (Vieillot) ( Passeriformes : Sylviidae ). Type locality: Poland.

NON-PHYSOGASTRIC FEMALE, (holotype and 4 paratypes). Total body length 520–645. Gnathosoma . Hypostomal apex rounded. Infracapitulum apunctate. Peritremes M-shaped, each medial branch with 3–4 chambers, each lateral branch with 4–5 chambers. Movable cheliceral digit with several teeth in posterior part. Stylophore 155 long. Idiosoma . Propodonotal shield divided longitudinally into 2 narrow lateral shields, sparsely punctate, bearing bases of setae ve, si and se. Setae vi and ve situated at same transverse level. Unpaired median shield absent. Propodonotal setae vi, ve and si strongly beaded, other setae smooth. Length ratio of setae vi: ve: si 1.2–1.3:1:1.4. 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. Pygidial shield well developed and punctate. Setae f2 twice as long as f1. Setae h1 2–4 times longer than f1. Alveoles of setae 3a–3a not coalesced. Genital plate well developed, apunctate. Aggenital setae ag1 and ag2 situated at same transverse level. Length ratio of setae ag1: ag2: ag3 1:1:2. Setae ps1 and ps2 subequal in length, both slightly (1.3 times) shorter than genital setae. Setae g1 hair-like. Genital lobes absent. Coxal fields I–IV well developed, sparsely punctate. Setae 3c 2.2 times longer than 3b. Legs. Leg setae smooth. Antaxial and paraxial members of claws pair III and IV unequal in size. Setae tc”III–IV slightly (1.2 times) longer than tc’ III–IV. Lengths of setae: vi 110–120, ve 90–95, si 130–140, se 210–235, c1 230–245, c2 155–210, d1 115–140, d2 155–175, e2 100–110, f1 40–45, f2 85–95, h1 variable 95–180, ps1 30–35, ps2 30–35, g1 35–45, 1a 30, 3a 30, ag1 70–75, ag2 70–75, ag3 145–160, l’RIII 25, l’RIV 25, tc’III–IV 50, tc”III–IV 65, 3b 35–45, 3c 80–110.

PHYSOGASTRIC FEMALE (2 paratypes). Body worm-shaped outline, 710 long. Morphology of body and legs as in non-physogastric form.

MALE (4 paratypes). Total body length 515–545. Gnathosoma . Infracapitulum apunctate. Hypostomal apex rounded. Peritremes M-shaped, each medial branch with 3–4 chambers, each lateral branch with 4–6 chambers; borders between these chambers clearly visible. Movable cheliceral digit edentate in posterior part. Idiosoma . Propodonotal shield divided longitudinally into 2 narrow lateral shields, sparsely punctate, bearing bases of setae ve, si and se. Setae vi and ve situated at same transverse level. Propodonotal setae vi, ve and si strongly beaded. Length ratio of setae vi: ve: si 1:1:1.4. Setae c1 located slightly anterior to level of setae se. Hysteronotal shield not fused to pygidial shield, divided longitudinally. Setae d2 2.3 times longer than d1 and e2. Pygidial shield well developed, sparsely punctate. Setae h2 7.8 times longer than f2. Alveoles of setae 3a–3a not coalesced. Two aggenital plates sparsely punctate, bearing bases of setae ag1. Length ratio of setae ag1: ag2 2:1. Legs. Leg setae smooth. Setae 3c twice as long as 3b. Coxal fields I–IV well developed, apunctate. Lengths of setae: vi 55, ve 55, si 75, c1 130, c2 90, d1 40, d2 90, e2 40, h2 195, f2 25, 3a 25, ag1 70, ag2 35, l’RIII 20, l’RIV 15, 3b 25–30, 3c 50–55.

Type material examined. Acrocephalus paludicola (Vieillot) ( Passeriformes : Sylviidae ): female holotype

(non-physogastric form) and paratypes: 4 females (non-physogastric form), 4 females (physogastric form) , 4 males

( AMU –SYR.58) (bod.); POLAND, Zachodniopomorskie, near Swinoujscie , October 2001, coll. G. Kiljan. Type material deposition. All type material deposited in the AMU , except 1 female paratype in the ZISP .

Host range and habitat. Monoxenous species inhabiting body quills of Acrocephalus paludicola . Distribution. Poland.

Figures

FIGURE 263. Picobia paludicola Skoracki and Kiljan, female (non-physogastric form). A, dorsal view; B, ventral view.

FIGURE 264. Picobia paludicola Skoracki and Kiljan, male. A, propodonotum in dorsal view; B, hysteronotum in dorsal view; C, opisthosoma in ventral view.

FIGURE 265. Picobia paludicola Skoracki and Kiljan, female (A–F). A, gnathosoma in ventral view; B, peritremes; C, propodonotal setae ve; D, movable cheliceral digit with dentate posterior margin (arrow); E, tarsus III in ventral view; F, opisthosoma in ventral view. Male (G, H). G, gnathosoma in ventral view; H, peritremes. Scale bars: F = 50 µm; A, B, D, E, G, H = 25 µm; C, E = 20 µm.