Capitolichus campoflicker, Hernandes, 2020

Hernandes, Fabio A., 2020, A review of the feather mite family Gabuciniidae Gaud & Atyeo (Acariformes Astigmata: Pterolichoidea) of Brazil, with descriptions of eleven new species, Zootaxa 4747 (1), pp. 1-53 : 16-20

Capitolichus campoflicker sp. nov.

( Figs. 10–12 )

Type material. Holotype male (#4795), paratypes (#4796–4830) 18 males and 13 females ex Colaptes campestris (Vieillot, 1818) ( Piciformes : Picidae ), roadkilled specimen, BRAZIL, São Paulo State, Ubatuba, 23 o 26’S, 45 o 04’W, May 2010, E. Leme & D. V. Boas-Filho col. (#724); paratypes 6 males and 6 females, same host, roadkilled specimen, BRAZIL, São Paulo State, Vale Verde , Valinhos, 14 May 2006, U. Kawazoe col.

Depositories: Holotype and most paratypes at UFSC, 2 male and 2 female paratypes also at each MGAB and ZISP.

MALE ( Figs. 10 , 12 A–D, F). (Holotype, range for five paratypes in parentheses). Gnathosoma roughly trapezoidal, length including palps 65 (63–67), greatest width at base 69 (70–72). Idiosoma length from anterior end to bases of setae h3 on lobar apices 442 (440–459), greatest width at level of humeral setae 234 (213–243); length of hysterosoma 323 (322–346). Prodorsal shield: antero-lateral extensions protruding to margins of propodosoma between trochanters I and II and fused with epimerites Ia, antero-lateral margins heavily sclerotized, lateral margins with narrow and deep incisions encircling bases of setae se, posterior margin with shallow median concavity, greatest length 106 (103–107), width at posterior margin 152 (144–157). Setae vi long setiform, 59 (57–62) long, extending beyond tips of palps. Setae si thin piliform, 6 (5–7) long. Distance between bases of scapular setae: se: se 74 (68–74), si: si 46 (40–48). Subhumeral setae c3 lanceolate, length × width 21 (17–22) × 7 (6–7). Hysteronotal shield: greatest length from anterior margins to bases of setae h3 308 (307–324), length along midline 211 (211–220), width at anterior margin 184 (180–195), anterior margin slightly concave, surface smooth except for faint longitudinal striation medially on posterior two thirds. Lateral bands distinct. Lobar areas of hysteronotal shield not separated from main body of this shield. Supranal concavity small triangular. Setae c2 thin piliform, 18 (15–18) long, situated in anterior angles of hysteronotal shield, cupules ia immediately postero-mesal to their bases. Setae e1 situated at level of hysteronotal gland openings gl or slightly posterior to them. Terminal cleft narrowed anteriorly and with rounded ledges on inner margins of opisthosomal lobes. Length of terminal cleft from anterior end to lobar apices (setae h3) 68 (62–72), width at level of setae h1 76 (73–80). Inner margins of opisthosomal lobes with round incision anterior to setae h1, posterior ends with small circular membranous extensions. Setae e2 narrowly lanceolate 23 (23–26) long, about half the distance to bases of setae h2; setae f2 narrowly lanceolate, 28 (28–32) long, situated at level of setae h2, setae h1 lanceolate, 20 (20–22) long, 4 (3–4) wide, situated at level of setae h2. Distances between bases of dorsal setae and gland openings: c2: d2 101 (93–101), d2: e2 153 (149–165), e2: h3 52 (52–58), d2: gl 52 (57–62), h3: h3 98 (95–100), h2: h2 102 (102–105), d1: d2 26 (24–26), e1: e2 89 (87–91).

Epimerites I, II without inflated bases. Epimerites I with tips simple, almost touching bases of coxal setae 1a. Epimerites II curved. Genital apparatus strongly moved posteriorly, situated near anterior end of anal opening, genital arch 30 (27–30) × 22 (19–25), aedeagus not extending to its base. Bases of setae 4a separated. Setae 4b slightly posterior to level of setae 3a. Setae g posterior to level of genital papillae. Distances between ventral setae: 4b: g 55 (53–61), g: 4a 87 (85–89), 4a: ps3 26 (22–26), ps3: ps3 90 (80–90), 4a: 4a 12 (10–15). Adanal suckers 19 (18–19) in diameter, corolla with 16–19 rounded denticles.

Femora I, II without ventral crest. Seta cG of genu I long spiculiform, 78 (61–69) long, slightly exceeding combined length of genu and tibia. Solenidion σ 1 of genu I 13 (12–15) long, about three times longer than solenidion σ 2. Solenidion σ of genu III absent. Solenidion φ of tibia IV shorter than corresponding tarsus. Tarsus IV with setae d and e setiform. Legs IV with distal half of tarsus extending about to level of setae f2. Length of tarsi: I 38 (32–40), II 45 (43–46), III 48 (45–49), IV 50 (49–51). Ambulacral disc of tarsus I circular, subequal to those of tarsi II–IV. Length of solenidia: σ1 I 13 (12–15), σ II 7 (6–7), ω1 I 7 (7–10), ω1 II 15 (15–16).

FEMALE ( Figs. 11 , 12E, G ) (range for five paratypes). Gnathosoma, length × width, 75–82 × 82–92. Idiosoma, length × width, 509–571 × 247–281, length of hysterosoma 363–414. Prodorsal shield shaped as in male, 116–138 × 161–188. Setae vi long setiform, 59–73 long, extending beyond tips of palps. Setae si thin piliform, 9–12 long. Distance between bases of scapular setae: se: se 67–88, si: si 43–54. Subhumeral setae c3 lanceolate, length × width 19–21 × 6–8. Hysteronotal shield completely separated by large U-shaped unsclerotized area divided posteriorly into main body and a pair of opisthosomal pieces. Main body of hysteronotal shield: anterior margin concave, anterior angles acute, lateral margins sinuous with irregular indentations at level of setae d2, posterior end extending to level of setae e2, posterior margin with short irregularly indented median extension, greatest length 307–329, width at anterior margin 197–222, surface with faint reticulate pattern on posterior two thirds. Lateral bands well devel- oped, posterior ends fused with opisthosomal pieces of hysteronotal shield, anterior ends extending to level of setae d2 [=or genua III]. Lateral bands and posterior margins of opisthosomal pieces strongly sclerotized, bearing gland openings gl, setae e2, f2, h2, h3, and ps1. Opisthosoma generally rounded, with barely expressed rounded lobes and shallow terminal cleft. Setae c2 thin piliform, 18–25 long, situated on anterior angles of hysteronotal shield; cupules ia postero-mesal to them. Setae d2 short piliform, 13–16 long. Setae e1 posterior to level of hysteronotal gland openings gl. Setae e2 lanceolate, length × width 25–37 × 7, setae f2 narrowly lanceolate, 22–27 × 4–6, setae h1 short spiculiform, 9–13 long, situated on unsclerotized area of opisthosoma. Distances between dorsal setae and gland openings: c2: d2 110–125, d2: e2 175–224, e2: h3 60–74, d2: gl 57–70, h1: h1 62–72, h2: h2 81–101, h3: h3 54–69.

Epimerites I, II without basal inflation. Epimerites I not extending to setae 1a. Epigynum horseshoe-shaped, 55–72 long, 67–84 wide. Setae 4b situated on epigynum, at midlevel of its branches. Setae 4a situated posterior to genital papillae. Copulatory opening terminal, posterior to anal opening, and situated on small tubercle between opisthosomal lobes. Distances between ventral setae: 4b: g 43–56, 4b: 3a 23–30, g: 4a 64–69, ps2: ps3 28–43, ps2: ps2 82–99.

Femora I, II without ventral crest. Setae cG of genu I long spiculiform, 72–85 long, slightly longer than genu and tibia I combined. Legs IV ambulacrum extending roughly to level of bases of setae f2. Length of tarsi: I 39–48, II 46–53, III 51–63, IV 62–67. Length of solenidia: σ1 I 18–19, σ II 7–9, ω1 I 11–15, ω1 II 16–21.

Differential diagnosis. The new species is very similar to C. pitangus in having the prodorsal shield with lateral incisions at the level of the scapular setae, but can be distinguished from that species mostly by characters observed in females. In females of C. campoflicker sp. nov., setae h1 are short and spiculiform, setae d1 and d2 are arranged in a trapezoid, setae e2 are about as twice as robust as f2, and the lateral margins of hysteronotal shield are sinuous, with noticeable irregular projections at level of setae d2; in males, setae 1a are close to tips of epimerites I and clearly distant from the apical level of epimerites II. In females of C. pitangus , setae h1 are thin, setiform, setae d1 and d2 are arranged in an almost transverse line, setae e2 are nearly as robust as f2, and the lateral margins of the hysteronotal shield are straight; in males of that species, setae 1a are situated at level of tips of epimerites II and noticeably distant from tips of epimerites I.

Etymology. The specific epithet is taken from the English common name of the host, the Campo Flicker.

Figures

FIGURE 10. Capitolichus campoflicker sp. nov., male: dorsal (A) and ventral (B) views.

FIGURE 11. Capitolichus campoflicker sp. nov., female: dorsal (A) and ventral (B) views, spermatheca (C).

FIGURE 12. Capitolichus campoflicker sp. nov.: genu, tibia and tarsus I–IV of male (A–D), distal part of tibia and tarsus IV of female (E), dorsal opisthosoma of male (F).