Hoazinacarus anisosetus, Hernandes, Fabio A. & Mironov, Sergey V., 2015

Hernandes, Fabio A. & Mironov, Sergey V., 2015, The feather mites of the hoatzin Opisthocomus hoazin (Müller) (Aves: Opisthocomiformes), with the description of two new genera and six new species (Acari: Analgoidea, Pterolichoidea), Zootaxa 4034 (3), pp. 401-444 : 430-433

Hoazinacarus anisosetus sp. nov.

( Figs. 21–23 )

Type material. Male holotype (DZUNESP-RC #3184), 3 male and 5 female paratypes from Opisthocomus hoazin (Müller, 1776) (Opisthocomiformes: Opisthocomidae ), BRAZIL, Pará State, Fazenda Fartura, 09°40'S / 50°23'W, Santana do Araguaia, 0 8 September 2013, D.V. Boas-Filho coll. (#1111); other paratypes: 7 males and 4 females, same data (#1112); 2 females, same data (#1110).

Depository. Holotype, 7 male and 8 female paratypes at DZUNESP-RC; 3 male and 3 female paratypes at ZISP.

Description. MALE ( Figs. 21 , 23 A–D) (holotype, range for 5 paratypes in parentheses). Gnathosoma almost rectangular, length including palps 38 (39–42), width at base 27 (27–31). Idiosoma length from anterior end to lobar apices 218 (216–227), greatest width at level of humeral shields 133 (96–118); length of hysterosoma 169 (172–177). Prodorsal shield: surface smooth, posterior margin irregular ( Fig. 21 A), length along midline 43 (42– 45), greatest width 50 (48–53). Setae vi filiform, slightly shorter than chelicerae, their bases separated by 5 (4–5); si thick serrate, 35 (35–40) long, separated by 33 (32–34); setae se separated by 45 (45–49). Setae c2 thick serrate, 24 (18–22) long, situated at inner margins of humeral shields. Subhumeral setae c3 thin, spiculiform, 7 (4–7) long. Hysteronotal shield: transversely split into two halves at level between setae d2 and e2; greatest length from anterior margins to bases of setae h3 160 (166–177), width at anterior margin 60 (59–68), anterior margin nearly straight with curved edges, surface with ornamentation including network pattern and transverse striae as in Fig. 21 A. Hysteronotal gland openings gl posterior to setae e2. Setae d2 and e2 thick serrate, 49 (38–53) and 38(38–46) long, respectively; setae d1 and e1 thin spiculiform. Supranal concavity present. Opisthosomal margin round, lobes not expressed. Setae f2 and ps1 plumose/serrate. Distances between dorsal setae: c2:d2 53 (47–51), d2: e2 21 (18– 21), e2:h3 65 (63–70).

Epimerites I fused into a Y, sternum about 1/2 of total length of epimerites. Genital apparatus 17 (16–18) in length, 13 (9–13) in width, situated between levels of setae g and 4a. Distances between ventral setae: 4b:g 24 (18– 30), g:4a 28 (27–35); ps3:h3 31 (28–30). Anal suckers 5 (4–5) in diameter, without striation, corolla without indentations.

Leg segments without crests or other modifications. Solenidion σ1 of genu I approximately 1.2 times longer than this segment, situated basally. Setae mG of genua I, II setiform, subequal in length. Solenidion φ of tibia IV approximately half the length of the corresponding tarsus. Setae d, e of tarsi IV reduced to small depressions ( Fig. 23 D). Length of tarsi: I 23 (23–26), II 22 (20–24), III 33 (35–39), IV 40 (38–41). Length of solenidia: σ 1 I I 18 (15– 20), σ II 4 (5–7), σ III 9 (8–12), φ I 45 (42–45), φ II 43 (44–47), φ III 34 (37–40), φ IV 18 (16–20), ω 1 I 10 (8–10), ω 1 II 11 (10–13), ω 3 I 16 (17–20).

FEMALE ( Fig. 22 , 23 E–F) (range for 5 paratypes). Gnathosoma, length × width, 45–54 × 33–36. Idiosoma, length × width, 267–297 × 132–151, length of hysterosoma 211–223. Prodorsal shield shaped as in male, 55–60 × 51–55. Setae vi slightly shorter than chelicera, their bases separated by 5–6, setae si large, serrate, 38–41 long, setae se separated by 49–51. Setae c2 thick serrate, 20–23 long, situated in inner angles of humeral shields. Subhumeral setae c3 thin spiculiform, 9–10 long. Hysteronotal shield: transversely split into two halves posterior to setae d2; total length 205–219, width 52–64 at the widest part near level of e2, central area with network ornamentation ( Fig. 22 A). Setae d2 thick serrate, setae c1, d1, e1, e2 and h1 short filiform. Supranal concavity present, circular. Hysteronotal gland openings gl anterolateral to setae e2. Setae ps1, ps2 slightly barbulate.

Copulatory opening immediately posterior to anal opening. Spermatheca and spermaducts as in Fig. 23 G. Distances between dorsal setae: c2:d2 64–70, d2: e2 39–42, e2:h3 75–81.

Epimerites I as in male. Epigynum as slightly curved arch, 20–29 long, 38–50 wide. Apodemes of oviporus poorly developed. Setae g situated posterior to levels of setae 3a. Distances between ventral setae: 4b:g 16–38, g:4a 32–61.

Legs I–III as in male. Solenidion φ of tibia IV about 1/2 of this segment. Length of tarsi: I 29–31, II 25–29, III 40 –44, IV 48 –50. Length of solenidia: σI I 19–26, σ II 5–7, σ III 10–14, φ I 53 –57, φ II 52 –54, φ III 40 –45, φ IV 9–11, ω 1 I 11–12, ω 1 II 12–15, ω 3 I 11–22.

Etymology. Contraction of an- (Gr., not), isos (Gr., equal), and seta (L., hair, bristle); the epithet refers to the unequal number of large stake-shaped setae in males and females.

Figures

FIGURE 21. Hoazinacarus anisosetus gen. n., sp. n., male. A—dorsal view, B—ventral view.

FIGURE 22. Hoazinacarus anisosetus gen. n., sp. n., female. A—dorsal view, B—ventral view.

FIGURE 23. Hoazinacarus anisosetus gen. n., sp. n., legs. A – D male legs I – IV, E—female leg III, F—female tibia and tarsus IV, G—spermatheca.