Picipterodectes sasiae, Mironov, Sergey, Literak, Ivan, Hung, Nguyen Manh & Capek, Miroslav, 2012

Mironov, Sergey, Literak, Ivan, Hung, Nguyen Manh & Capek, Miroslav, 2012, New feather mites of the subfamily Pterodectinae (Acari: Proctophyllodidae) from passerines and woodpeckers (Aves: Passeriformes and Piciformes) in Vietnam, Zootaxa 3440, pp. 1-49 : 37-41

Picipterodectes sasiae sp. n.

( Figs. 22–24 )

Type material. Male holotype ( ZISP 4793), 4 male and 5 female paratypes from Sasia ochracea (Picidae) , VIETNAM: Bac Kan, Ba Be National Park, 22°23´N, 105°37´E, 5 July 2008, coll. I. Literak, Nguen Manh Hung and M. Capek.

Type depository. Holotype, 2 male and 3 female paratypes—ZISP, remaining paratypes—UMMZ, IEBR.

Description. MALE (holotype, range for 4 paratypes). Length of idiosoma 300 (295–305), width 117 (115–122), length of hysterosoma 196 (195–200). Prodorsal shield: split into two parts by transverse band of soft cuticle at level of scapular setae, antero-lateral extensions not expressed, total length of shield along median line 80 (78–82), width of posterior piece 73 (70–75), posterior margin of this piece slightly convex, surface without ornamentation ( Fig. 22 A). Setae ve absent. Scapular setae se separated by 42 (40–44). Scapular shields narrow. Humeral shields absent. Setae cp and c2 situated on soft tegument. Subhumeral setae c3 lanceolate, 17 (17–18) × 7 (7–8). Hysteronotal shield: greatest length 183 (180–186), width at anterior margin 71 (69–72), anterior margin concave, surface without ornamentation.

Opisthosomal lobes slightly longer than wide at base, enlarged apically, posterior margin widely rounded, posterior to bases of setae h2 these lobes membranous; setae h3 situated approximately in centre of membranous part ( Fig. 24 A). Terminal cleft narrowly ovate, length 33 (31–34), greatest width 16 (15–18). Supranal concavity ovate, open posteriorly. Setae f2 and ps2 situated at same transverse level. Setae h1 at level of supranal concavity. Setae h3 represented by macrosetae, longer than macrosetae h2, 135 (12–140) and 90 (90–100) in length, respectively; setae ps2 setiform, 26 (26–30) long; setae ps1 minute, about 5 long, situated near inner margin of opisthosomal lobe, equidistantly from levels of setae h2 and h3. Distance between dorsal setae: c2:e1 115 (110–122), e1:h2 60 (58–60), h2:h3 13 (12–14), d1: e1 64 (62–66), h1:ps2 15 (14–15), ps1:h3 7 (6–8), h2:h2 44 (42–45), h3:h3 31 (29–32), ps2:ps2 55 (52–56).

Epimerites I fused into a Y, sternum about ¼ of total length of epimerites, posterior end of sternum connected with middle parts of epimerites II by transverse sclerotized bands ( Fig. 22 B). Coxal fields I, II without wide sclerotized areas. Rudimentary sclerites rEpIIa absent. Coxal fields I, III closed, coxal fields II widely open. Coxal fields III of each side connected by straight transverse sclerite. Epimerites IVa poorly developed, not extending to bases of setae 4a. Genital arch of moderate size, 12 (11–12) in length, 25 (24–25) in width; basal sclerite of genital apparatus small, semicircular; aedeagus 102 (100–102) long, extending to level of setae h 3 in the middle of opisthosomal lobes ( Fig. 24 A). Genital papillae strongly reduced, situated at the very anterior margin of genital arch branches. Genital and adanal shields absent. Anal suckers 11 (11–12) in diameter, corolla with 10–12 indentations, surrounding membrane narrow and smooth. Opisthoventral shields not developed. Setae ps3 situated anterior to anal suckers, slightly closer to each other than to centers of these suckers. Distance between ventral setae: 3a:4b 9 (9–10), 4b–4a 35 (32–35), 4a–g 24 (22–24), g–ps3 24 (22–25), ps3–ps3 20 (19–20), ps3:h3 53 (50–55).

Legs I, subequal in size; femora I, II with ventral crest, other segments of these without processes. Solenidion σ 1 of genu I 16 (14–16) long, situated at midlevel of segment; genual setae cG I, cG II, mG I, mG II filiform. Seta d, f of tarsi II, III subequal in length. Solenidion φ of tibia IV extending to midlevel of ambulacral disc. Tarsus IV 24 (23–24) long, without apical claw; setae d, e button-like, situated in basal and apical parts of segment, respectively ( Figs. 24 B–E). Length of solenidia: ω 1 I 9 (9–10), ω 1 II 9 (8–10)), φI 55 (53–55), φII 46 (43–46), φIII 29 (28–30), φIV 36 (35–37).

FEMALE (5 paratypes). Length of idiosoma 430–445, width 155–165, length of hysterosoma 398–305. Prodorsal shield: split into two parts by transverse band of soft cuticle at level of scapular setae, antero–lateral extensions not expressed, posterior piece with strongly irregular margins, total length of shield along midline 93 (88–95), width of anterior part 77 (74–78), width of posterior part 66 (60–70), surface without ornamentation ( Fig. 23 A). Setae ve absent. Setae se separated by 58 (55–58). Scapular shields narrow. Humeral shields rudimentary, represented by small sclerites above bases of setae cp; setae c2 and cp situated on soft tegument. Setae c3 lanceolate, 19–20 × 7–8. Anterior and lobar pieces of hysteronotal shield separated dorsally by transverse band of unsclerotized tissue but remain connected ventrolaterally by strongly sclerotized bands. Anterior hysteronotal shield roughly rectangular, anterior margin concave, length 214 (208–215), width at anterior margin 100 (95–100), surface without ornamentation. Length of lobar region 88 (86–88), width 93 (88–94), anterior margin concave. Terminal cleft U-shaped, length 57 (55–57), width at midlevel 22 (22–24). Supranal concavity present, circular. Setae h1 on striated tegument between anterior hysteronotal and lobar shields. Setae h2 spindle-like, with short terminal filaments, length including filament 60 (60–63), length of spindle-like part 40–42, greqatest width 7–8. Setae ps1 on inner margin of opisthosomal lobes. Setae h3 short, 15–17 long, about 1/6th the length of terminal appendages. Distance between dorsal setae: c2:e1 148–157, e1:h2 85–88, h2:h3 44–47, d1: e1 78–82, h1:h 2 28–30, h2:ps 1 10–12, h1:h1 50–53, h2:h2 75–77.

Epimerites I fused as a V. Lateral parts of coxal fields I, II without heavily sclerotized areas ( Fig. 23 B). Epimerites IVa absent. Translobar apodemes of opisthosomal lobes present, wide, fused to each other anterior to terminal cleft. Epigynum horseshoe-shaped, greatest width 78–80. Inner tips of epimerites III fused with posterior ends of epigynum. Copulatory opening situated ventrally at anterior margin of fused translobar apodemes. Distal one third of primary spermaduct enlarged forming bursa copulatrix; secondary spermaducts about 5 long, continuation of primary spermaduct in head of spermatheca clearly distinct ( Fig. 24 F). Distance between pseudanal setae: ps2:ps2 45–48, ps3:ps 3 29–31, ps2:ps 3 18–19.

Legs I slightly thicker than legs II; femur II with wide ventral crest; other segments of legs I, II without processes. Solenidion σ 1 of genu I 18–20 long, situated closer to basal part of segment. Genual setae cG I, cG II, mG I, mG II filiform. Setae d, f of tarsi II–IV subequal in length. Genu IV inflated dorsally, genu III not modified ( Figs 24 G, H). Solenidion φ of tibia IV much shorter than that on tibia III. Length of solenidia: ω 1 I 10–11, ω 1 II 10–11, φI 55–57, φII 47–49, φIII 31–33, φIV 7–8.

Etymology. The specific epithet derives from the generic name of the type host, and is a noun in the genitive case.

Figures

FIGURE 22. Picipterodectes sasiae sp. n., male. A — dorsal view, B — ventral view.

FIGURE 23. Picipterodectes sasiae sp. n., female. A — dorsal view, B — ventral view.

FIGURE 24. Picipterodectes sasiae sp. n., details. A — opisthosoma of male, ventral view, B – E — legs I – IV of male, respectively, F — head of spermatheca and spermaducts, G, H — legs III and IV of female.