Metapterodectes furnarius Mironov, 2008

Mironov, Sergey V., Literak, Ivan & Čapek, Miroslav, 2008, New feather mites of the subfamily Pterodectinae (Acari: Astigmata: Proctophyllodidae) from passerines (Aves: Passeriformes) in Mato Grosso do Sul, Brazil, Zootaxa 1947, pp. 1-38 : 27-31

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Metapterodectes furnarius Mironov

sp. n.

Metapterodectes furnarius Mironov sp. n.

( Figs. 16–18)

Type material. Male holotype ( ZISP 4402 View Materials ), 12 male and 11 female paratypes ex Furnarius rufus (Gmelin, 1788) ( Furnariidae ), Brazil, Pantanal, Fazenda Monte Alegre, 21°30´S, 56° 40´W, 20 July 2006, I. Literak and M. Č apek. Holotype, 6 male and 6 female paratypes ( ZISP 4402-4413 View Materials ) – ZISP, remaining paratypes –


Male (holotype, measurements for 10 paratypes in parenthesis). Idiosoma, length × width, 380 (365–380) × 168 (160–170), length of hysterosoma 235 (230–235). Prodorsal shield: 113 (110–115) × 95 (92–104), with lateral margins entire, posterior margin slightly sinuous, antero-lateral extensions long and acute, surface uniformly punctate; scapular setae se separated by 55 (55–62) ( Fig. 16 A). Humeral shields absent. Setae cp situated ventrally on soft tegument. Setae c2 situated dorsally on soft tegument. Subhumeral setae c3 lanceolate, 26 (24–26) × 7 (6–7). Hysteronotal shield: greatest length 232 (223–235), width of anterior part 88 (80–88), anterior margin slightly concave, surface uniformly punctate. Distance between prodorsal and hysteronotal shields 40 (35–40). Opisthosomal lobes approximately as long as wide at base; posterior margin of lobes roughly rounded, with bases of setae h3, h2 and ps2. Supranal concavity present. Terminal cleft as a wide U with divergent branches, 24 (24–26) long. Setae f2 situated anterior to bases of setae ps2. Setae h1 situated at level of supranal concavity. Setae h3 narrowly lanceolate, 22 (22–24) × 3 (3); setae ps2 73 (68–75) long, slightly thickened, with filiform apex; setae ps1 minute, filiform, about 5 long, situated on margins of terminal cleft at level of setae ps2. Distance between bases of dorsal setae and setal pairs: se:c2 82 (70–82), c2:d2 97 (90–97), d2:e2 77 (66–76), e2:h3 45 (45–53), d1:d2 38 (33–38), e1: e2 24 (15–24), h1:ps2 24 (20–26), h2:h2 62 (57–62), h3:h3 42 (40–42), ps2:ps2 80 (75–80).

Epimerites I fused into a narrow U, posterior ends of epimerites I with little tooth-like extensions ( Fig. 16 B). Coxal fields I, II without large sclerotized areas. Rudimentary sclerite rEpIIa absent. Coxal fields II, III open. Coxal fields IV without large sclerotized areas at bases of trochanters IV. Epimerites IVa absent. Genital arch of moderate size, 18 (18–24); basal sclerite of genital apparatus small; aedeagus sword-shaped, 75 (68– 75) long, extending to anterior end of anal opening; genital papillae connected to each other. Genital and adanal shields absent. Anal suckers 12 (12–13) in diameter, corolla smooth. Opisthoventral shields wide, posterior end extending to bases of setae ps2; inner margins of these shields with setae ps3 at level of posterior margins of anal suckers and with acute extension at level of anterior end of terminal cleft. Distance between ventral setae: 3b:3a 9 (9–11), 3a:4a 53 (40–53), 4a:g 40 (33–40), g:ps3 55 (48–55), ps3:ps3 71 (68–73), ps3:h3 31 (30–32).

Legs I slightly thicker than legs II, femora I, II with narrow ventral crests, other segments of these legs without processes. Solenidion σ 1 of genu I short, stick-like, 12 (12–13) long, situated at midlevel of segment; genual setae cG I, II, mG I, II setiform ( Figs 17 A, B). Seta d of tarsus II subequal to corresponding seta f, and seta d of tarsus III shorter than corresponding seta f. Tarsus IV 31 (30–32) long, without apical claw-like process; setae d, e button–like, seta d in proximal half segment, seta e at apex of segment; solenidion ϕ of tibia IV extending to midlevel of ambulacral disc ( Fig. 17 D).

Female (10 paratypes measured). Idiosoma, length × width, 520–545 x 195–210, length of hysterosoma 365–380. Prodorsal shield: 125–135 × 120–128, lateral margins with narrow incisions usually extending to bases of setae si, posterior margin with pair of shallow concavities separated by blunt-angular extension, antero-lateral extensions long and acute; setae se separated by 75 (70–80) ( Fig. 18 A). Setae cp situated ventrally on soft tegument. Humeral shields rudimentary, situated anterior to bases of setae cp. Setae c2 situated dorso-laterally on soft tegument. Setae c3 lanceolate, 28–33 × 7–8. Distance between prodorsal and hysteronotal shields 45–55. Anterior and lobar parts of hysteronotal shield completely separated by narrow transverse band of soft tegument. Anterior hysteronotal shield almost parallel-sided, anterior and posterior margins slightly concave, greatest length 265–285, width at anterior margin 115–120, surface with little circular lacunae in posterior half and with pair of pale sclerotized patches slightly anterior to level of setae e2. Length of lobar region 90–98, greatest width 85–95. Supranal concavity present. Terminal cleft as a narrow inverted V, 55–62 long, distance between lobar apices 16–24. Setae h1 on lobar shield, distant from its anterior margins. Setae h1 and f2 arranged into low trapezium. Setae h2 spindle-like basal part enlargement and long filiform apical part, total length of setae 105–120, width of enlarged part 6–7. Setae ps1 near to inner margins of opisthosomal lobes. Setae h3 setiform, 9–11 long, about 1/10 of terminal appendages. Distance between dorsal setae: se:c2 100–110, c2:d2 120–128, d2:e2 100–115, e2:h2 78–84, h2:h3 32–38, d1:d2 42–48, e1: e2 30– 44, h1:h2 26–33, h1:h1 29–35, h2:h2 64–72, h3:h3 40–48.

Epimerites I fused as a narrow U, posterior ends of epimerites without lateral extensions ( Fig. 18 B). Lateral parts of coxal fields I, II without heavy sclerotized areas. Epimerites IVa absent. Translobar apodemes of opisthosomal lobes present, not fused to each other anterior to terminal cleft. Epigynum horseshoe-shaped, with short ledge-like lateral extensions. Primary spermaduct with scarcely noticeable enlargement near head of spermatheca; secondary spermaducts about 20 long ( Fig. 17 G). Pseudanals setae ps2, ps3 modified into little suckers situated approximately at midlevel of anal opening; distance between setae: ps2:ps2 35–38, ps3:ps3 34–37, ps2:ps3 7–9.

Three distal segments of legs I, II as in male; femur I without lateral crest, femur II with ventral crest. Solenidion σ 1 of genu I thin stick-like, 15–20 long. Genual setae cG I, II, mG I, II thin setiform. Seta d of tarsus II subequal to corresponding seta f, and setae d of tarsi III, IV shorter than corresponding seta f. Genu IV dorsally inflated, genu III, IV with weakly expressed longitudinal dorsal crests ( Figs. 17 E, F).

Etymology. The specific epithet is taken from the generic name of the host and is a noun in apposition.


Zoological Institute, Russian Academy of Sciences