Amerodectes plumbeus , Mironov, Sergey & González-Acuña, Daniel, 2011

Mironov, Sergey & González-Acuña, Daniel, 2011, New feather mites of the subfamily Pterodectinae (Acariformes: Proctophyllodidae) from passerines (Aves: Passeriformes) from Chile and Cuba, Zootaxa 3057, pp. 1-48: 25-28

publication ID

http://doi.org/ 10.5281/zenodo.203166

persistent identifier

http://treatment.plazi.org/id/546E87CE-031F-FF93-FF11-E288FA6395B5

treatment provided by

Plazi

scientific name

Amerodectes plumbeus
status

sp. n.

Amerodectes plumbeus  sp. n.

( Figs. 13View FIGURE 13 F –J, 14, 15)

Type material. Male holotype ( ZISP 4626), 3 male and 5 female paratypes from the Red-legged Thrush Turdus plumbeus Linnaeus  ( Turdidae  ), CUBA: Habana, 23 ° 6 ' 52 " N 82 ° 23 ' 1 " W, 27 October 2007, coll. D.A. González- Acuña.

Type depository. Holotype, 2 males and 4 female paratypes—ZISP, remaining paratypes—DGA.

Description. MALE (holotype, range for 3 paratypes in parentheses). Idiosoma, length × width, 428 (425–435) × 168 (165–173), length of hysterosoma 285 (280–290). Prodorsal shield: 128 (125–133) × 130 (130–135), lateral margins entire, posterior margin straight, antero-lateral extensions rounded, entire surface with numerous circular lacunae up to 8 in diameter; scapular setae se separated by 66 (60–66) ( Fig. 14View FIGURE 14 A). Setae ve present. Humeral shields present, narrow, situated laterally, separated from epimerites III. Setae cp situated at ventral margin of humeral shield. Setae c 2 situated on anterior end of humeral shield. Subhumeral setae c 3 lanceolate, 27 (27–29) × 9 (8–9). Hysteronotal shield: greatest length 294 (290–295), width in anterior part 120 (120–126), anterior margin slightly concave, entire surface with numerous circular lacunae as in prodorsal shield. Distance between prodorsal and hysteronotal shields 10 (10–12). Opisthosomal lobes approximately as long as wide at base; posterior ends of lobes roughly rounded, with wide oblique extension at base of setae h 2 and with pair of small extensions at bases of setae h 3 that form three small teeth on lobar apices. Terminal cleft shaped as an inverted U with slightly divergent branches, 42 (40–45) in length. Supranal concavity indistinct. Setae f 2 slightly anterior to bases of setae ps 2. Setae h 1 much anterior to terminal cleft. Setae h 3 narrowly lanceolate with acute apices, 40 (38–42) × 5 (4.5– 6); setae ps 2 90 (88–95) long, setae ps 1 minute, filiform, about 10 long, situated on margin of terminal cleft approximately at level of setae ps 2. Distance between bases of dorsal setae: c 2:d 2 117 (110–118), d 2:e 2 100 (98–106), e 2:h 3 68 (62–70), d 1:d 2 40 (40–45), e 1: e 2 29 (27–41), h 1:ps 2 33 (30–35), h 2:h 2 66 (65–73), h 3:h 3 47 (45–53), ps 2:ps 2 86 (85–94).

Epimerites I fused into a V, fused part connected to medial parts of epimerites II by narrow transverse bands ( Fig. 14View FIGURE 14 B). Coxal fields I, II without extensive sclerotized areas. Rudimentary sclerites rEpIIa absent. Coxal fields II, III open. Coxal fields IV with sclerotized area at base of trochanters IV. Epimerites IVa present, short. Genital arch of moderate size, 31 (30–33) × 44 (42–45); basal sclerite of genital apparatus with semicircular posterior margin; aedeagus sword-shaped, 115 (110–115) long, extending to midlevel of anal suckers; genital papillae not connected by bases. Genital and adanal shields absent. Anal suckers 14 (14–15) in diameter, corolla smooth. Opisthoventral shields wide, occupying distal half of opisthosomal lobes and lateral areas of opisthosoma; inner margins with wide bidentate extensions at level of anal suckers, setae ps 3 at midlevel of anal suckers. Distance between ventral setae: 3 b: 3a 13 (13–15), 3 a: 4a 47 (45–48), 4 a:g 58 (53–60), g:ps 3 64 (62–66), ps 3:ps 3 70 (70– 75), ps 3:h 3 42 (40–44).

Femora I, II with narrow ventral crests, other segments of legs I, II without processes. Solenidion σ 1 of genu I 9 (9–10) long, situated at midlevel of segment; genual setae cG I, II and mG I, II filiform ( Figs. 13View FIGURE 13 F, G). Seta d of tarsus II subequal to corresponding seta f, seta d of tarsus III shorter than corresponding setae f. Tarsus IV 32 (31– 33) long, without apical process; seta d in basal half of segment; solenidion φ of tibia IV extending to midlevel of ambulacral disc ( Fig. 13View FIGURE 13 H).

FEMALE (5 paratypes). Idiosoma, length × width, 560–588 × 200–210, length of hysterosoma 395–410. Prodorsal shield: general form and surface as in male except for posterior angles extending much more laterally, 144– 146 × 162–164, setae se separated by 73–82 ( Fig. 15View FIGURE 15 A). Setae ve present. Humeral shields present, narrow, situated laterally, separated from epimerites III. Setae cp situated on ventral margin of humeral shield. Setae c 2 situated on anterior end of humeral shields. Setae c 3 lanceolate, 30–33 × 9–10. Distance between prodorsal and hysteronotal shields 15–18. Anterior and lobar parts of hysteronotal shield separated dorsally by narrow transverse band of soft tegument, but remain connected ventro-laterally ( Fig. 15View FIGURE 15 B). Anterior hysteronotal shields slightly attenuate posteriorly, anterior margin concave, greatest length 304–320, width at anterior margin 148–155, whole surface with numerous circular lacunae as in prodorsal shield. Length of lobar region 110–115, greatest width 98–108. Terminal cleft as a narrow U, extending to level of setae h 2, 56–58 long, width at level of lobar apices 20–23. Supranal concavity well developed, circular; surface of lobar shield with 2–3 pairs of circular lacunae lateral to supranal concavity. Setae h 1 on lobar shield, distant from anterior margins, situated slightly posterior to level of supranal concavity; setae h 1 and f 2 arranged in almost transverse row. Setae h 2 spindle-like, 58–60 × 9–10. Setae ps 1 near inner margins of opisthosomal lobes. Setae h 3 20–24 long, about 1 / 8 th length of terminal appendages. Distance between dorsal setae: c 2:d 2 122–135, d 2:e 2 133–142, e 2:h 2 72–77, h 2:h 3 50–52, d 1:d 2 45–62, e 1: e 2 45–48, h 1:h 2 31–35, h 1:h 1 33–35, h 2:h 2 77–84.

Epimerites I fused into a V, fused part without lateral extensions. Lateral parts of coxal fields II with large sclerotized areas ( Fig. 15View FIGURE 15 B). Epimerites IVa absent. Translobar apodemes of opisthosomal lobes present, wide, not fused to each other anterior to terminal cleft. Epigynum without lateral extensions, greatest width 75–77; apodemes of oviporus fused with epimerites IIIa. Pseudanal setae filiform, setae ps 2 posterior to anal opening and widely separated from each other, distance between setae: ps 2:ps 2 48–57, ps 3:ps 3 24–28, ps 2:ps 3 44–46. Primary spermaduct without enlargements; secondary spermducts short, with well sclerotized part 8–10 long ( Fig. 13View FIGURE 13 J).

Femora I, II with ventral crest, other segments of these legs without processes. Solenidion σ 1 of genu I short, 9–10 long, situated at midlevel of segment. Genual setae cG I, II and mG I, II filiform. Seta d of tarsus II subequal to corresponding seta f, setae d of tarsi III, IV shorter than corresponding setae f. Genu IV dorsally inflated, with narrow longitudinal dorsal crest ( Fig. 13View FIGURE 13 I), genu III without noticeable dorsal crest.

Differential diagnosis. Amerodectes plumbeus  sp. n. is obviously very closely related to A. turdinus (Berla, 1959)  originally described from Tudus rufiventris Vieillot  ( Turdidae  ) in Brazil and subsequently recorded from three more Turdus  species in Brazil and Surinam ( Berla 1959 a; Černý & Lukoschus 1975; Valim & Hernandes 2010) by having the dorsal shields completely covered with large circular lacunae (up to 8 in diameter) and well developed humeral shields in both sexes, and relatively long dagger-like setae h 3 in males. Amerodectes plumbeus  differs from A. turdinus  by the following features: in males, the aedeagus extends to the midlevel of the anal suckers, the length of setae h 3 is subequal to the distance between their bases, and the bases of trochanters IV are flanked by narrow bands connecting corresponding epimerites IV and IVa; in females, setae h 2 are spindle-like, the supranal concavity is flanked laterally by 2–4 circular lacunae, and epimerites IVa are absent. In males of A. turdinus  , the aedeagus extends to the anterior margin of the anal suckers, the length of setae h 3 is almost twice as long as the distance between their bases, and the bases of trochanters IV are not flanked by narrow bands; in females, setae h 2 are spindle-like with filiform apices, the supranal concavity is flanked by one pair of large circular lacunae, and epimerites IVa are present.

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

ZISP

Zoological Institute, Russian Academy of Sciences