A review of the feather mite family Gabuciniidae Gaud & Atyeo (Acariformes Astigmata: Pterolichoidea) of Brazil, with descriptions of eleven new species Hernandes, Fabio A. Zootaxa 2020 2020-03-02 4747 1 1 53 Hernandes, 2020 Hernandes 2020 [151,441,1557,1584] Arachnida Gabuciniidae Proaposolenidia GBIF Animalia Sarcoptiformes 19 20 Arthropoda species bicolor sp. nov.  ( Figs. 13–15) Type material. Holotypemale (#4831), paratypes 27 males, 24 femalesand 8 nymphs (#4832–4870) ex  Accipiter bicolor(Vieillot, 1817)( Accipitriformes: Accipitridae), specimen found dead after collision with glass panel, BRA- ZIL, State Park Intervales, Ribeirão Grande, SP, June, 2017, no further data.  Depositories: Holotypeand most paratypesat UFSC, 2 maleand 2 female paratypesat MGABand ZISP. MALE ( Figs. 13, 15A–E). ( Holotype, range for five paratypesin parentheses). Gnathosoma roughly trapezoidal, length including palps 66 (57–71), greatest width at base 77 (70–77). Idiosoma length from anterior end to bases of setae h3on lobar apices 382 (366–394), greatest width at level of humeral setae 225 (230–234); length of hysterosoma 368 (362–365). Prodorsal shield: occupying almost entire prodorsum, antero-lateral extensions protruding to margins of propodosoma between trochanters I and II and fused with epimerites Ia, antero-lateral margins heavily sclerotized and fused with anterior ends of scapular shields, lateral borders barely discernible, thin transverse band of unsclerotized area completely crossing the shield at level of scapular setae seand si, posterior part shaped as narrow transverse sclerite with sinuous posterior margin, greatest length including posterior piece 94 (88–94), width at posterior margin 110 (103–114). Setae visetiform, 52 (52–60) long, slightly extending beyond tips of palps. Setae si72 (63–72) long, as strong and robust as se. Distance between bases of scapular setae: se: se71 (69–73), si: si28 (27–33). Subhumeral setae c3long setiform, length × width 115 (101–124) × 2. Hysteronotal shield: greatest length from anterior margins to bases of setae h3212 (219–232), length along midline 132 (132–149), width at anterior margin 185 (150–185), anterior margin slightly convex, surface with faint reticulate ornamentation. Lateral bands distinct. Lobar areas of hysteronotal shield not separated from main body of this shield. Supranal concavity large, semicircular. Setae c2spiculiform, 42 (42–48) long, situated off hysteronotal shield, cupules iaimmediately postero-mesal to their bases, on anterior angles of hysteronotal shield. Setae e1situated at level of hysteronotal gland openings gl. Terminal cleft with anterior part narrow, semiovate in shape, and with posterior part nearly two times wider; posterior parts of opisthosomal lobes bent medially. Length of terminal cleft from anterior end to lobar apices (bases of setae h3) 77 (68–80), width at level of setae h178 (71–95). Inner margins of opisthosomal lobe with triangular membranous projection on ledges of terminal cleft, with strong semicircular incision anterior to bases of setae h1, posterior ends of opisthosomal lobes with semicircular membranous extensions. Setae e2spiculiform 52 (48–59) long, with apices surpassing level of setae h2; setae f2lanceolate with apical filament, 55 (41–55) long, situated anterior to level of setae h2, setae h1lanceolate, 30 (29–31) long, 5 (3–5) wide, situated between levels of setae h2and h3. Distances between bases of dorsal setae and gland openings: c2: d283 (79–94), d2: e296 (90–100), e2: h352 (48–55), d2: gl29 (25–34), h3: h3123 (103–123), h2: h2128 (114–128), d1: d228 (20–28), e1: e270 (66–70).   FIGURE 13.  Proaposolenidia bicolor  sp. nov., male: dorsal (A) and ventral (B) views.   FIGURE 14.  Proaposolenidia bicolor  sp. nov., female: dorsal (A) and ventral (B) views.   FIGURE 15.  Proaposolenidia bicolor  sp. nov.: genu, tibia and tarsus I–IV of male (A–D), dorsal opisthosoma of male (E), tarsus IV of female (F), spermatheca of female (G). Epimerites I, II with inflated and heavily sclerotized bases. Basal parts of epimerites I connected with thick transverse bridge, their tips simple, not extending to bases of coxal setae 1a. Epimerites II slightly curved. Genital apparatus apex at level of trochanters IV, genital arch 17 (13–17) × 12 (11–12), aedeagus not extending to its base. Bases of setae 4aseparated, situated at basal part of genital apparatus. Setae 4bslightly posterior to level of setae 3a. Setae gat level of anterior pair of genital papillae. Adanal shields present, as small roughly circular platelets posterior to setae 4a. Distances between ventral setae: 4b: g40 (23–42), g: 4a66 (47–66), 4a: ps328 (28–33), ps3: ps386 (84–86), 4a: 4a17 (15–19). Adanal suckers 19 (16–19) in diameter, corolla with 14–15 rounded denticles. Femora I, II without ventral crest. Seta cGof genu I spiculiform, 73 (69–78) long, exceeding combined length of genu and tibia. Solenidion σ1 of genu I 17 (13–18) long, solenidion σ2 absent. Solenidion σof genu III situated in basal part of this segment. Solenidion φof tibia IV shorter than corresponding tarsus. Tarsus IV with setae dand eminute spine-like. Legs IV with distal half of tarsus extending beyond level of lobar apices. Length of tarsi: I 48 (44–48), II 64 (59–65), III 75 (72–79), IV 76 (73–78). Ambulacral disc of tarsus I ovate and noticeably larger than roughly circular ambulacra of tarsi II–IV. Length of solenidia: σ1I 17 (13–18), σII 8 (5–8), σIII 12 (8–12), ω1I 13 (12–14), ω1II 30 (22–30). FEMALE ( Figs. 14, 15F, G) (range for five paratypes). Gnathosoma, length × width, 69–80 × 78–87. Idiosoma, length × width, 418–441 × 273–290, length of hysterosoma 288–297. Prodorsal shield generally shaped in male, except lateral borders clearly distinct and not fused with scapular shields, 100–105 × 116–134. Setae visetiform, 55–64 long, extending beyond tips of palps. Setae si81–94 long, as strong and robust as se. Distance between bases of scapular setae: se: se81–83, si: si33–36. Subhumeral setae c3long setiform, length × width 117–143 × 2. Hysteronotal shield: entire, with slightly concave anterior margin, anterior angles acute, extending to posterior margin of opisthosoma at level of setae e2, posterior margin with a pair of ovate unsclerotized areas around setae h1, greatest length 172–181, width at anterior margin 175–185, anterior half with faint reticulate ornamentation, middle part with longitudinal striations. Lateral bands well developed. Setae c2spiculiform, 66–74 long, situated off hysteronotal shield; cupules iapostero-mesal to them and also off this shield. Setae d2short piliform, 19–29 long. Setae e1approximately at level of hysteronotal gland openings gland cupules im. Posterior margin of hysteronotal shield between setae f2strongly sclerotized. Posterior margin of opisthosoma almost semi-rounded. Setae e2setiform, length × width 57–63 × 1, setae f2short piliform 23–39 long, setae h1short piliform, 5–8 long. Distances between dorsal setae and gland openings: c2: d295–108, d2: e2112–134, e2: h338–52, d2: gl26–42, h1: h153–59, h2: h261–69, h3: h346–49. Epimerites I, II as in males. Epigynum horseshoe-shaped, 31–38 long, 63–72 wide. Setae 4bsituated off epigynum, posterior to its tips. Setae 4asituated between levels of anterior and posterior genital papillae. Copulatory opening terminal, distant from anal opening. Distances between ventral setae: 4b: g50–54, 4b: 3a28–39, g: 4a14– 19, ps2: ps316–21, ps2: ps254–57. Femora I, II without ventral crests. Setae cGof genu I long spiculiform, 75–90 long, slightly longer than combined length of genu and tibia I. Legs IV with tarsus and distal part of tibia extending beyond posterior end of opisthosoma. Length of tarsi: I 48–53, II 68–75, III 87–102, IV 100–106. Length of solenidia: σ1I 19–23, σII 6–9, σIII 13–15, ω1I 11–15, ω1II 25–33.   Differential diagnosis.The new species,  Proaposolenidia bicolor  sp. nov., resembles  P. accipitris Mironov & Proctor, 2007in having, in males, setae c1on or near the anterior border of the hysteronotal shield, setae h1short and not extending to midline of the body, and the genital papillae situated closer to setae gthan to setae 4a. The new species can be distinguished from  P. accipitrisbased on the following characters. In both sexes: setae vi, relatively longer and extending to or beyond apices of palps; setae siextending beyond the level of setae c1; the presence of a transverse prodorsal shield fragment posterior to setae seand si. In females: setae e2are about twice longer than f2, surpassing body terminus. In both sexes of  P. accipitris, setae viare short and only reach the midlength of the subcapitulum; setae sido not reach the level of setae c1; the prodorsal shield fragment posterior to setae seand siis absent; in females, setae e2are relatively shorter, about as long as f2and barely reach the bases of the latter setae.   Etymology.The species name is taken from the specific epithet of the typehost,  Accipiter bicolor. 2572302901 [199,1377,1773,1799] UFSC, MGAB, ZISP 19 20 4 2 2 holotype