Amerodectes contopus, Mironov & González-Acuña, 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 : 18-21

publication ID 10.11646/zootaxa.3057.1.1


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scientific name

Amerodectes contopus

sp. n.

Amerodectes contopus sp. n.

( Figs. 8 View FIGURE 8 F–J, 9, 10)

Type material. Male holotype ( ZISP 4607 View Materials ), 3 male and 4 female paratypes from the Eastern Wood Pewee Contopus virens (Linnaeus) ( Tyrannidae ), CUBA: Habana, 23 ° 6 ' 52 "N 82 ° 23 ' 1 "W, 23 October 2007, coll. D.A. González-Acuña. GoogleMaps

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

Description. MALE (holotype, range for 3 paratypes in parentheses). Idiosoma, length × width, 365 (340–365) × 133 (130–140), length of hysterosoma 235 (214–235). Prodorsal shield: 106 (98–106) × 98 (95–106), lateral margins entire, posterior margin straight, antero-lateral extensions acute, surface with numerous small circular lacunae; scapular setae se separated by 55 (55–58) ( Fig. 9 View FIGURE 9 A). Setae ve absent. Humeral shields absent. Setae c 2 and cp situated on striated tegument. Subhumeral setae c 3 lanceolate, 22 (21–22) × 7 (7–9). Hysteronotal shield: greatest length 245 (220–245), width in anterior part 95 (95–100), anterior margin straight or slightly concave, median area with very small circular lacunae. Distance between prodorsal and hysteronotal shields 7 (7–15). Opisthosomal lobes approximately as long as wide at base; posterior margin of lobes roughly rounded, with short and blunt extensions at bases of setae h 2 and h 3. Terminal cleft shaped as an inverted U with strongly divergent branches, 24 (24– 28) in length. Supranal concavity present, semicircular. Setae f 2 situated anterior to bases of setae ps 2. Setae h 1 situated anterior to supranal concavity. Setae h 3 narrowly lanceolate, 22 (20–22) × 3 (3–4); setae ps 2 62 (60–65) long; setae ps 1 minute, about 10 long, situated on margins of terminal cleft approximately at level of setae ps 2. Distance between bases of dorsal setae: c 2:d 2 93 (85–95), d 2:e 2 105 (80–105), e 2:h 3 60 (50–60), d 1:d 2 37 (28–38), e 1:e 2 20 (20–28), h 1:ps 2 31 (28–35), h 2:h 2 55 (52–55), h 3:h 3 42 (38–42), ps 2:ps 2 69 (66–70).

Epimerites I fused into a V, fused part with acute posterior end and with narrow lateral extensions connected to medial parts of epimerites II (in some specimens these bands interrupted) ( Fig. 9 View FIGURE 9 B). Coxal fields I, II without extensive sclerotized areas. Rudimentary sclerites rEpIIa absent. Coxal fields II, III open. Coxal fields IV without sclerotized areas. Epimerites IVa absent. Genital arch of medium size, 22 (22–24) × 46 (44–46); basal sclerite of genital apparatus with rounded posterior margin; aedeagus straight, 105 (93–105) long, extending to anterior end of terminal cleft; genital papillae connected by bases. Genital and adanal shields absent. Anal suckers 12 (12–13) in diameter, corolla smooth. Opisthoventral shields wide, occupying posterior half of lobes and lateral parts of opisthosoma, inner margins of these shields with blunt extension at level of anal suckers; setae ps 3 on these extensions. Distance between ventral setae: 3 b: 3a 9 (7–10), 3 a: 4a 44 (40–45), 4 a:g 42 (37–42), g:ps 3 49 (45–50), ps 3:ps 3 60 (55–60), ps 3:h 3 37 (30–35).

Femora I, II with ventral crests, other segments of legs I, II without processes. Solenidion σ 1 of genu I 17 (15– 17) long, situated at midlevel of segment or slightly basally; genual setae cG I, II and mG I, II filiform ( Figs. 8 View FIGURE 8 F, G). Setae d of tarsi II, III half as long as corresponding setae f. Tarsus IV 27 (24–27) long, without apical process; seta d situated at midlevel of segment; solenidion φ of tibia IV extending to midlevel of ambulacral disc ( Fig. 8 View FIGURE 8 H).

FEMALE (4 paratypes). Idiosoma, length × width, 510–520 × 165–170, length of hysterosoma 355–375. Prodorsal shield: general form and surface as in male except for slightly concave posterior margin, 128–133 × 133– 135, setae se separated by 66–72. Setae ve absent. Humeral shields absent. Setae c 2 and cp situated on soft tegument. Setae c 3 lanceolate, 14–15 × 7–8. Distance between prodorsal and hysteronotal shields 15–25. Anterior and lobar parts of hysteronotal shield separated dorsally by narrow transverse band of soft tegument, but remain connected ventro-laterally ( Figs. 10 View FIGURE 10 A). Anterior hysteronotal shields noticeably attenuate posteriorly, anterior margin slightly concave, greatest length 270–285, width at anterior margin 130–135, posterior part with little circular lacunae as on prodorsal shield. Lobar region strongly constricted anterior to level of setae h 2, length of region 93–97, greatest width 76–82; posterior margin of lobar shield with deep and narrow incision, lateral parts of this shield connected to each other by narrow transverse band. Terminal cleft shaped as very narrow V, anterior end extending far beyond level of setae h 2, 64–66 long, width at level of lobar apices 11–14. Setae h 1 on lobar shield, far distant from its anterior margins; setae h 1 and f 2 in low trapezoid arrangement. Setae h 2 spindle-like, 58–60 × 7–9. Setae ps 1 on inner margins of opisthosomal lobes. Setae h 3 12–14 long, about 1 / 8 of terminal appendages. Distance between dorsal setae: c 2:d 2 105–125, d 2:e 2 118–138, e 2:h 2 66–68, h 2:h 3 42–44, d 1:d 2 40–45, e 1:e 2 32–35, h 1:h 2 25–30, h 1:h 1 26–28, h 2:h 2 60–62.

Epimerites I fused into a Y with very short sternum; without lateral extensions. Lateral parts of coxal fields I, II with large sclerotized areas ( Fig. 10 View FIGURE 10 B). Epimerites IVa absent. Translobar apodemes of opisthosomal lobes present, wide, not fused each other anterior to terminal cleft. Epigynum without lateral extensions, greatest width 62–66; the apodemes of oviporus fused with epimerites IIIa. Pseudanal setae ps 2, ps 3 filiform, setae ps 2 posterior to anal opening, distance between setae: ps 2:ps 2 33–42, ps 3:ps 3 17–20, ps 2:ps 3 30–40. Primary spermaduct with very short conical enlargement in proximal part and with long enlargement in distal part (bursa copulatrix); well sclerotized part of secondary spermaducts 5–8 long ( Fig. 8 View FIGURE 8 J).

Femora I, II with ventral crest, other segments of these legs without processes. Solenidion σ 1 of genu I 18–20 long, situated at midlevel of segment. Genual setae cG I, II and mG I, II filiform. Setae d of tarsi II – IV shorter than corresponding setae f. Genu IV dorsally inflated, with narrow longitudinal dorsal crest ( Fig. 8 View FIGURE 8 I), genu III without dorsal crest.

Differential diagnosis. Amerodectes contopus sp. n. is most similar to A. wilsoniae described above by the absence of humeral shields in both sexes and by having short and lanceolate setae h 3 (shorter than distance between their bases) and in having an aedeagus extending beyond the level of anal suckers in males. Amerodectes contopus differs from A. wilsoniae by the following features: in males, the prodorsal shield has numerous circular lacunae, fused tips of epimerites I are connected with epimerites II or at least with a pair of acute extensions directed laterally, and the aedeagus extends to the anterior end of terminal cleft; in females, the lobar shield is almost completely split by median band of soft tegument and its pieces remain connected by only narrow transverse band at the very anterior margin of the shield ( Fig. 10 View FIGURE 10 A). In males of A. wilsoniae , the prodorsal shield has no lacunae at all or small dash-like lacunae are present in its anterior part, epimerites I form a short and acute sternum without any lateral extensions, and the aedeagus extends slightly beyond the anterior end of terminal cleft; in females, the lobar shield is completely split by median band of soft tegument.

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


Royal British Columbia Museum - Herbarium