Vireodectes erporni, 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 : 42-46

Vireodectes erporni sp. n.

( Figs. 25–27 )

Type material. Male holotype ( ZISP 4799), 3 male and 4 female paratypes from Erpornis zantholeuca (Blyth) (Vireonidae) , 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 3 paratypes). Length of idiosoma 352 (334–350), width 137 (128–135), length of hysterosoma 227 (220–225). Prodorsal shield: separated in two parts by transverse band of soft cuticle at level of scapular setae, antero-lateral extensions short and acute, total length of shield 110 (104–110), width of posterior piece 80 (75–80), posterior margin of this piece nearly straight, surface without ornamentation ( Fig. 25 A). Setae ve rudimentary, represented by alveoli. Scapular setae se separated by 48 (45–48). Scapular shields narrow. Humeral shields absent. Setae cp and c2 situated on soft striated tegument. Subhumeral setae c3 lanceolate, 17 (16–17) × 6 (6–7). Hysteronotal shield: length 223 (216–220), width at anterior margin 95 (88–95), anterior margin slightly concave, surface of posterior half with numerous minute lacunae, lateral margins posterior to level of trochanters III dark coloured. Opisthosomal lobes short and narrow, distal margin oblique; portion of lobes posterior to setae ps2 mostly membranous; setae h3 situated at midlevel of these lobes ( Fig. 27 A). Terminal cleft small, almost ovate, 26 (24–26) in length, 12 (11–12) in width. Supranal concavity circular, open posteriorly, poorly outlined. Setae f2 and ps2 at same transverse level. Setae h1 at midlevel of supranal concavity. Setae h3 represented by macrosetae, exceeding macrosetae h2, 300 (280–310) and 170 (155–165) in length, respectively; setae ps2 setiform, 36 (32–36 long; setae ps1 filiform, about 10 long, situated on inner margin of opisthosomal lobe closely to levels of setae h3. Distance between dorsal setae: c2:d2 83 (78–80), d2: e2 82 (77–80), e2:h2 38 (36–38), h2:h3 11 (10–12), d1:d2 25 (23–25), e1: e2 27 (24–26), h1:ps2 12 (10–12), ps1:h3 5 (4–5), h2:h2 51 (48–50), h3:h3 29 (27–29), ps2:ps2 66 (62–66).

Epimerites I fused into a Y, posterior end of sternum T-shaped, lateral extensions not connected with middle parts of epimerites II ( Fig. 25 B). Epimerites of all coxae heavily sclerotized. Coxal fields I, II without wide sclerotized areas. Rudimentary sclerites rEpIIa absent. Coxal fields I, II open, coxal fields III closed. Coxal fields IV with small sclerotized area at bases of trochanters IV. Epimerites IVa present. Genital arch of moderate size, 24 (22–24) in length, 40 (38–40) in width; basal sclerite of genital apparatus small; aedeagus long whip-shaped, 295 (280–290) long, extending beyond lobar apices by half its length ( Fig. 27 A). Genital papillae not connected by their bases. Genital and adanal shields absent. Anal suckers 12 (11–12) in diameter, corolla with 10–11 indentations. Opisthoventral shields not developed. Setae ps3 situated closer to each other than to centers of these suckers. Distance between ventral setae: 3a:4b 15 (13–15), 4b–4a 37 (35–38), 4a–g 40 (37–40), g–ps3 31 (29–31), ps3–ps3 22 (20–22), ps3:h3 53 (50–53).

Legs I, II subequal in size; femora I, II with ventral crest, other segments of legs I, II without processes. Solenidion σ 1 of genu I 15 (13–15) long, situated in proximal part of segment; 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 tarsal apex. Tarsus IV 28 (27–28) long, with short and rounded apical extension; setae d, e button-like, situated in basal and apical parts of segment, respectively; setae w on ventral side of apical extension ( Figs. 27 B–E). Length of solenidia: ω 1 I 14 (13–14), ω 1 II 11 (10–11), φI 66 (64–66), φII 55 (54–55), φIII 37 (35–37), φIV 26 (24–26).

FEMALE (4 paratypes). Length of idiosoma 440–450, width 155–160, length of hysterosoma 300–312. Prodorsal shield: separated in two parts by transverse band of soft cuticle at level of scapular setae, antero–lateral extensions acute, posterior piece as inverted trapezium, its posterior margin slightly convex, total length 110–115, greatest width of posterior piece 106–112, surface without ornamentation ( Fig. 26 A). Setae ve rudimentary, represented by alveoli. Setae se separated by 66 (66–70). Scapular shields narrow. Humeral shields absent; setae cp and c2 situated on soft tegument. Setae c3 lanceolate, 16 (15–16) x 7 (7–8). Anterior and lobar pieces of hysteronotal shield separated dorsally by wide transverse band of unsclerotized tissue but remain connected ventrolaterally. Anterior hysteronotal part of shield roughly rectangular, anterior margin straight, length 236–242, width at anterior margin 98–102, most surface quite poorly sclerotized, but lateral margins posterior to level of trochanters III dark coloured. Length of lobar region 75–78, width 75–79, anterior margin with pair of concavities and short median extension. Terminal cleft parallel-sided, narrow, length 51–53, width at midlevel 11–13. Supranal concavity circular, poorly expressed. Setae h1 on anterior margin of lobar shield, approximately at level of supranal concavity. Setae h2 spindle–like, 33–35 × 7–8. Setae ps1 on inner margin of opisthosomal lobes. Setae h 3 8–10 long, about 1/10th the length of terminal appendages. Distance between dorsal setae: c2:d2 90–95, d2:e2 136–140, e2:h2 37–40, h2:h 3 26–29, d1:d 2 24–27, e1: e2 52–55, h1:h 2 26–28, h2:ps 1 13–15, h1:h 1 22–24, h2:h2 56–58.

Posterior tips of epimerites I almost touching or connected by very thin commissure. Lateral parts of coxal fields I, II without heavily sclerotized areas ( Fig. 26 B). Epimerites IVa absent. Translobar apodemes of opisthosomal lobes present, wide, their connection anterior to terminal cleft very narrow. Epigynum horseshoeshaped, outer margins without ledge, greatest width 73–75. All epimerites and epigynum dark colored. Copulatory opening situated ventrally between anal opening and anterior margin of terminal cleft. Distal half of primary spermaduct narrow enlarged forming bursa copulatrix; secondary spermaducts 13–15 long ( Figs. 27 F). Distance between pseudanal setae: ps2:ps2 44–46, ps3:ps 3 15–16, ps2:ps 3 20–21.

Legs I slightly thicker than legs II; femur II with angular ventral crest; other segments of legs I, II without processes. Solenidion σ 1 of genu I 14–16 long. Genual setae cG I, cG II, mG I, mG II filiform. Setae d, f of tarsi II–IV subequal in length ( Figs. 27 G, H). Genu IV without inflations and longitudinal crests. Solenidion φ of tibia IV much shorter than that on tibia III. Length of solenidia: ω 1 I 13–14, ω 1 II 14–15, φI 62–65, φII 55–58, φIII 40–42, φIV 10–11.

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

Figures

FIGURE 25. Vireodectes erporni sp. n., male. A — dorsal view, B — ventral view.

FIGURE 26. Vireodectes erporni sp. n., female. A — dorsal view, B — ventral view.

FIGURE 27. Vireodectes erporni 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 — tarsi, tibiae and genua III, IV of female, respectively.