Aniacarus simplex, Mironov, Sergey V., Hernandes, Fabio A. & Pedroso, Luiz Gustavo A., 2015

Mironov, Sergey V., Hernandes, Fabio A. & Pedroso, Luiz Gustavo A., 2015, New feather mites of the genera Aniacarus and Aniibius (Acariformes: Pterolichidae) from two cuckoo species (Cuculiformes: Cuculidae) in Brazil, Zootaxa 3937 (1), pp. 103-126 : 111-113

Aniacarus simplex sp. n.

( Figs. 4–6 )

Type material. Male holotype (DZUNESP-RC #2334) and 1 male paratype from Guira guira ( Cuculiformes : Cuculidae ), BRAZIL, São Paulo State, Campinas, Universidade Estadual de Campinas (UNICAMP), 22°49’S 47°04’W, September 2010, D.V. Boas-Filho col. (#828); other paratypes: 1 male from the same host species, BRAZIL, São Paulo State, Campinas, Rodovia SP-340, 22°50’S 47°02’W, 11 May 2010, D.V. Boas-Filho col. (#722); 8 males and 11 females from the same host species, BRAZIL, Minas Gerais State, Lavras, 21°12’S 44°58’W, 26 February 2014, L.F.O. Bernardi col.

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

Description. MALE (holotype, range for 5 paratypes in parentheses). Gnathosoma almost rectangular, length × width, 56 (56–61) × 58 (52–58). Idiosoma, length width, 320 (315–345) × 195 (115–205); length of hysterosoma 230 (230–245). Prodorsal shield: occupying most part of prodorsum, postero-lateral angles well developed, length along midline 85 (78–90), width at posterior margin 105 (105–115). Setae vi filiform, approximately half as long as chelicerae, their bases separated by 20 (20–22); setae si filiform, about 13 (13–16) long; setae se separated by 74 (71–77). Setae c2 filiform, 12 (11–15) long, situated off humeral shields near their anterior angles. Subhumeral setae c3 spiculiform, thin, 25 (20–35) long. Hysteronotal shield: greatest length from anterior margins to bases of setae h3 210 (205–245), width at anterior margin 140 (130–145), anterior margin straight, surface without ornamentation. Hysteronotal gland openings gl poorly distinct, situated slightly anterior to level of setae e2. Setae e1 situated anterior to level of hysteronotal gland openings. Supranal concavity present. Opisthosomal lobes short, widely rounded, terminal cleft small triangular, 28 (24–32) long. Setae e2 filiform 10 (10–15) long, setae f2 spiculiform 40 (35–40) long; setae ps2 72 (55–73) long; setae ps1 spiculiform, 40 (39–48) long. Distances between hysteronotal setae: c2:d2 77 (71–83), d2: e2 64 (64–71), e2:h3 70 (70–85), d1:d2 23 (21–25), e1: e2 24 (17–27), h1:h3 36 (36–50), h2:h2 76 (75–90), h3:h3 43 (43–57), ps1:ps1 25 (25–35), ps2:ps2 105 (105–115).

Epimerites I fused into a Y, sternum about 1/3 of total length of epimerites. Genital apparatus 23 (23–30) × 11 (11–18), anterior half extending beyond level of epimerites IIIa. Setae 4b situated slightly posterior to level of setae 3a. Setae g situated at level of genital apparatus apex, genital papillae at midlevel of this apparatus. Distances between ventral setae: 3a:4b 6 (2–7), 4b:g 6 (6–10), and g:4a 33 (30–35). Adanal suckers 17 (17–18) in diameter, with radial striation, corolla without indentations.

Legs I, II without noticeably modified segments. Femora III, IV without dorso-apical spine. Solenidion σ1 of genu I approximately 1.5 times longer than this segment. Setae mG of genua I, II subequal in length. Solenidion φ of tibia IV slightly longer than corresponding tarsus. Setae d, e of tarsi IV button-like, poorly sclerotized. Length of tarsi: I 33 (30–33), II 31 (27–32), III 35 (33–38), IV 43 (37–43). Length of tarsal solenidia: ω 1 I 11 (9–11), ω 1 II 13 (13–14).

FEMALE (range for 5 paratypes). Gnathosoma, length × width, 66–78 × 55–68. Idiosoma, length × width, 425–450 × 210–245, length of hysterosoma 315–325. Prodorsal shield shaped as in male, 95–105 × 125–135, posterior part with darkened median band extending to posterior margin. Setae vi approximately half as long as chelicerae, separated by 21–27, setae si filiform, about 10 long, setae se separated by 85–88. Setae c2 filiform, 14–17 long, situated off humeral shields near their anterior angles. Subhumeral setae c3 thin spiculiform, 25–28 long. Hysteronotal shield: length 295–310, width 155–165, anterior margin straight, posterior part with large poorly sclerotized area with transverse striation (as on soft cuticle of the body). Supranal concavity present, circular. Hysteronotal gland openings gl slightly posterior to level of setae e2. Setae h1 situated on transversally striated area of hysteronotal shields, posterior to level of setae e2. Setae h 1 20–24, f 2 28–32, ps 2 23–31 long, all spiculiform; setae e2 filiform, about 10 long; setae ps1 filiform, 22–30 long. External copulatory tube subterminal, shaped as minute cone. Spermatheca and spermaducts as in Fig. 6 D. Distances between dorsal setae: c2:d2 82–95, d2: e2 86–96, e2:h3 105–135, d1:d 2 22–35, e1: e 2 25–38, h1:h3 75–95, h1:h 1 27–32, h2:h2 64–71, h3:h 3 30–39, ps1: ps 1 24–30.

Epimerites I as in male. Epigynum bow-shaped, 16–20 long, 35–38 wide. Apodemes of egg-laying opening rudimentary. Setae g situated slightly posterior to levels of setae 3a. Distances between ventral setae: 4b:g 18–23, g:4a 43–56.

Legs I–III as in male. Solenidion φ of tibiae IV about 1/3 of this segment. Length of tarsi: I 30–36, II 30–34, III 44 –48, IV 57 –62. Length of tarsal solenidia: ω 1 I 12–13, ω 1 II 14–19.

Differential diagnosis. The new species A. simplex sp. n. differs from A. mexicanus and A. ani sp. n. (described above) by the following features: in both sexes of A. simplex , the prodorsal shield occupies almost the entire prodorsum and extends far beyond the level of scapular setae, and setae c2 are filiform; in males, setae ps1 are short spiculiform; in females, the posterior end of the hysteronotal shield has a large poorly sclerotized area with transverse striation, setae f2 and ps2 are spiculiform. In both sexes of A. mexicanus and A. ani , the prodorsal shield extends to or slightly beyond the level of scapular setae, setae c2 are spiculiform; in males, setae ps1 are long, thickened proximally and filiform apically; in females, the posterior end of hysteronotal shield has an Ushaped area with longitudinal striation, setae f2 and ps2 are filiform.

The new species A. simplex , and two other new Aniacarus species from Guira guira described below constitute a grouping of closely related species, which are characterized by having the prodorsal shield well developed posterior to the level of scapular setae in both sexes, and idiosomal setae f2 and ps2 spiculiform or narrowly lanceolate in females.

Etymology. The specific epithet refers to the simple structure of the opisthosoma and opisthosomal setae, as compared to the other two Aniacarus species described from the Guira Cuckoo in the present work.

Figures

FIGURE 4. Aniacarus simplex sp. n., male. A — dorsal view, B — ventral view.

FIGURE 5. Aniacarus simplex sp. n., female. A — dorsal view, B — ventral view.

FIGURE 6. Aniacarus simplex sp. n., details. A — leg I of male, B — leg II of male, C — tibia and tarsus IV of male, D — spermatheca.