Nycteridocaulus leptopogoni Mironov, 2017

Mironov, Sergey V., Literak, Ivan, Sychra, Oldrich & Capek, Miroslav, 2017, Feather mites of the subfamily Proctophyllodinae (Acari: Proctophyllodidae) from passerines (Aves: Passeriformes) in Costa Rica, Zootaxa 4297 (1), pp. 1-105 : 37-41

Nycteridocaulus leptopogoni Mironov sp. n.

( Figs. 16–18 )

Type material. Male holotype ( ZISP 6356 ), 10 male and 10 female paratypes from Leptopogon superciliaris Tschudi, 1944 (Tyrannidae) , COSTA RICA, Tapantí National Park , Sector Tapantí, Cordillera de Talamaca Mts., 09°46′N, 83°47′W, 31 July 2009, collectors I. Literak, O. Sychra and M. Capek.

Depository. Holotype, 8 male and 8 female paratypes (ZISP 6357–6372)—ZISP; 1 male and 1 female paratype—UMMZ (BMOC-15-1028-001), 1 male and 1 female paratype—IMUCR.

Description. MALE (holotype, range for 10 paratypes in parentheses). Idiosoma, length × width, 310 (305– 340) × 140 (140–165), length of hysterosoma 210 (210–220). Prodorsal shield: anterolateral extensions with rounded tips, lateral margins entire, posterior margin slightly concave, 95 (95–105) in length and 105 (105–120) in width, surface with numerous circular lacunae up to 10 in diameter ( Fig. 16 A). Setae ve rudimentary. Scapular setae se separated by 65 (65–75). Setae c2 and cp on humeral shield. Setae c3 lanceolate, 18 (18–19) × 5 (5–6). Distance between prodorsal and hysteronotal shields 20 (15–20). Hysteronotal shield: 200 (195–220) in length and 115 (110–125) in width; anterior margin slightly concave, surface with numerous circular lacunae as on prodorsal shield. Opisthosoma slightly attenuate posteriorly. Opisthosomal lobes short, roughly rectangular, posterior margin almost straight; terminal lamellae short rectangular, 5 (5–6) in length and 16 (16–19) in width. Terminal cleft small, narrowly triangular, with anterior end extending to level of setae h2, 17 (15–17) in length, 9 (8–10) in width at posterior end. Supranal concavity present, narrowed posteriorly. Setae h2 situated on small semiovate lateral extensions of opisthosomal lobes; setae h3 situated in posterolateral angle of opisthosomal lobes; setae ps 1 in posteromedial angles of lobes, slightly posterior to level of setae h3; setae h1 situated slightly anterior to setae ps2. Distance between dorsal setae: c2:d2 75 (72–80), d2:e2 80 (80–85), e2:h3 40 (40–43), h2:h2 58 (55–64), h3:h3 44 (42–50), ps2:ps2 70 (70–75), h1:h2 32 (32–38), d1:d2 15 (15–20), e1:e2 28 (28–35), ps1:h3 3 (3–4).

Epimerites I free, close to each other, posterior tips slightly divergent; epimerites I, II with narrow surface fields; epimerites IVa absent ( Fig. 16 B). Rudimentary sclerite rEpIIa present. Trochanters III flanked by sclerotized band connecting bases of epimerites III and IIIa. Epimerites IIIa wide, with sclerotized plates around their inner tips almost touching at midline. Trochanters IV flanked by sclerotized bands stretching from bases of epimerites IV. Genital apparatus situated posterior to level of trochanters IV. Genital arch shaped as recurved bow, 13 (13–15) in length and 42 (42–45) in width. Aedeagus stylet-like, 20 (20–22) in length, reaching level of setae g ( Fig. 18 A, B). Genital papillae on small oval plates at level of genital arch apex. Distance from genital arch apex to bases of setae h3 100 (100–105). Pregenital apodemes absent. Setae 4a on soft tegument, setae 4b on sclerotized areas of epimerites IIIa. Adanal suckers 16 (16–17) in diameter, corolla with 9 denticles. Adanal shields represented by a pair of roughly L-shaped sclerites situated anterior to anal suckers. Setae ps3 situated on transverse branches of adanal shields. Opisthoventral shields shaped as small roughly triangular extensions at level of anal opening. Distance between ventral setae: 3a:4b 15 (13–15), 4b:4a 25 (25–28), 4a:g 42 (42–45), g:g 18 (18–20), g:ps3 23 (23–25), ps3:ps3 23 (23–25), ps3:h3 53 (52–60).

Femora I, II with ventral crest. Solenidion σ1 of genu I equal in length to this segment and situated at its midlevel. Solenidion σ of genu III situated in proximal half of this segment ( Fig. 18 C–E). Legs III, IV subequal in size, legs IV with ambulacral discs extending to level of lobar apices. Tarsus IV 20 (20–25) in length, with apicoventral claw-like process bearing seta w; modified setae d and e button-like, situated in distal half of this segment ( Fig. 18 F). Setae d and f of tarsi II, III subequal in length. Length of solenidia: σ 1 I 23 (23–28), σ III 10 (10– 13), φ IV 30 (30–33).

FEMALE (range for 10 paratypes). Idiosoma, length × width, 430–450 × 170–180, length of hysterosoma 310–320. Prodorsal shield: form and ornamentation as in male, 110–115 in length and 130–135 in width. Setae se separated by 80–85. Setae c2 and cp on humeral shields. Setae c3 lanceolate, 18–20 × 5–6. Distance between prodorsal and hysteronotal shields 15–20. Anterior hysteronotal shield: 220–230 in length and 130–140 in width, anterior margin straight, posterior margin with short and widely rounded median extension, entire surface with numerous circular lacunae; in posterior part these lacunae noticeably larger, up to 10 in diameter ( Fig. 17 A). Lobar region: 95–105 in length and 108–110 in width, lateral margins convex, without noticeable extensions bearing setae h2; lobar shield entire, its anterior margin with a pair of narrow triangular incisions and small semirounded extension between them. Terminal cleft narrow, almost parallel-sided, 65–73 in length, 12–15 in width at midlevel. Supranal concavity absent. Setae h2 lanceolate in basal part and with filiform apex, 80–90 in length, 7–8 in width; setae h3 68–75 in length, approximately half the length of terminal appendages. Setae h1 inserted on striated tegument between the anterior hysteronotal and lobar shields. Setae h1 and f 2 in trapezoidal arrangement. Setae ps1 on inner margins of opisthosomal lobes, close to level of setae h3. Distance between dorsal setae: c2:d2 90–95, d2:e2 120–125, e2:h2 50–55, h2:h3 38–45, h1:h2 40–45, d1:d 2 30–35, e1:e2 60–65, h1:h 1 28–30, h2:h2 85–88, h2:ps 1 23–30.

Epimerites I as in male; epimerites I–II with narrow sclerotized fields. Epimerites IVa large, roughly triangular, with long posterior extension ( Fig. 17 B). Epigynum horseshoe-shaped, thick, with rounded tips extending beyond level of setae g, 55–60 in length, 75–80 in width. Genital papillae of each side on small ovate sclerotized plate. Setae ps2 at midlevel of anal opening. Translobar apodemes not fused to each other anterior to terminal cleft. Copulatory opening ventral, situated near to anterior end of terminal cleft. Head of spermatheca short; proximal part of primary spermaduct with strong enlargement 30–35 long, with short collar around base of narrowed part; secondary spermaducts 50–55 long ( Fig. 18 H). Distance between pseudanal setae, ps2:ps2 48–50, ps3:ps 3 24–25, ps2:ps 3 13–14.

Legs I, II as male. Solenidion σ of genu III in proximal half of this segment. Legs IV with distal margin of ambulacral disc extending to level of setae h2. Solenidion φ of tibia IV slightly shorter than corresponding tarsus. Seta d of tarsus II longer than corresponding seta f, setae d of tarsi III, IV shorter than corresponding setae f. Length of solenidia: σ 1 I 28–33, σ III 15–20, φ III 45 –50, φ IV 35 –40.

Differential diagnosis. The new species, Nycteridocaulus leptopogoni Mironov sp. n., is most similar to N. tyranni Atyeo, 1966 from Contopus pertinax Cabanis and Heine (Tyrannidae) from Mexico in having numerous large circular lacunae on the dorsal shields in both sexes, and short terminal lamellae of rectangular form and thick L-shaped adanal shields in males. Nycteridocaulus leptopogoni differs from the latter species as follows: in males, the pregenital apodemes are absent, setae ps3 are situated on the adanal shields and the terminal cleft extends to the level of setae h2; in females, the terminal cleft is narrow and nearly 5 times longer than wide, and setae h2 are distinctly shorter than terminal appendages. In males of N. tyrrani , the pregenital apodemes are represented by small sclerites of irregular form situated anterior to setae 4a, setae ps3 are situated off the adanal shields, and the terminal cleft barely extends to the level of setae h3; in females, the terminal cleft is 1.5 – 2 times longer than wide at midlength, and macrosetae h2 are nearly 2 times longer than the terminal appendages.

Etymology. The specific epithet is derived from the generic name of the type host and is a noun in the genitive case.

Figures

FIGURE 16. Nycteridocaulus leptopogoni Mironov sp. n., male. A—dorsal view, B—ventral view.

FIGURE 17. Nycteridocaulus leptopogoni Mironov sp. n., female. A—dorsal view, B—ventral view.

FIGURE 18. Nycteridocaulus leptopogoni Mironov sp. n., details. A—opisthosoma of male, ventral view, B—genital apparatus of male, dorsal view, C, D—legs I and II of male, dorsal view, E—trochanter, femur and genu III of male, ventral view, F—tibia and tarsus IV of male, dorsal view, G—tibia and tarsus IV of male, ventral view, H—spermatheca and spermaducts.