Proctophyllodes strictophyllus 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 : 94-98

Proctophyllodes strictophyllus Mironov sp. n.

( Figs. 55–57 )

Type material. Male holotype ( ZISP 6587 ), 2 male and 3 female paratypes from Coereba flaveola (Linnaeus, 1758) (Coerebidae) , Costa Rica, Tapanti National Park , Sector Tapantí, Cordillera de Talamanca Mts., 09°46'N, 83°47′W, 9 August 2009, collectors I. Literak, O. Sychra and M. Capek.

Depositories. Holotype, 1 male and 2 female paratypes (ZISP 6 588–6590)—ZISP; 1 male and 1 female paratype—IMUCR.

Description. MALE (holotype, range for 2 paratypes in parentheses). Idiosoma, length × width, 230 (225– 235) × 140 (130–145), hysterosoma length 145 (140–150). Prodorsal shield: antero-lateral extensions short, bluntangular, lateral margins entire, posterior margin almost straight, posterior angles roughly rounded, length 73 (72– 75), greatest width 88 (85–90), surface without ornamentation, setae ve indistinct ( Fig. 55 A). Scapular setae se separated by 60 (60–65). Scapular shields narrow. Humeral shields not fused with epimerites III, encompassing bases of setae cp. Setae c2 on antero-medial angles of humeral shields. Subhumeral setae c3 spiculiform, 13 (13– 15) long. Hysteronotal shield: length 153 (150–158), width at anterior margin 108 (105–110), anterior margin straight, anterior angles bluntly rounded, surface without ornamentation. Supranal concavity shaped as inverted teardrop, anterior end not extending to midlevel between setae e1 and e2, length 40 (38–42). Posterior margin of opisthosoma between setae h2 straight or slightly concave. Terminal lamellae narrowly foliform, slightly curved and attenuate to apex, not overlapping, with posterior ends slightly divergent, surface with pennate venation; length 66 (62–68), maximal width in basal part (50–64), greatest distance between bases 22 (21–24). Distances between hysteronotal setae: c2:d2 49 (48–53), d2:e2 60 (60–62), e2:h3 31 (29–31), d1:d2 26 (25–33), e1: e2 22 (20–24), h1:h3 11 (9–11), h2:h2 71 (70–72), h3:h3 53 (50–55), ps2: ps2 82 (80–85).

Epimerites I fused into a narrow U with narrow commissure, without lateral extensions. Setae 4b situated posterior to inner tips of epimerites IIIa. Epimerites IVa narrow, not extending to setae 4a. Genital arch narrow, 21 (20–22) long, 16 (16–18) wide, its base situated at midlevel of trochanters IV, tips of arch adjoining to opisthogastric shield. Genital organ sword-shaped, with reflexion rearward at level of articulation of trochanter/ femur III; genital sheath: thin, tapering apically, equal in length to aedeagus and completely encompassing it, extending beyond level of setae g, and almost reaching anal opening, 47 (45–48) in length from reflexion ( Figs. 55 B, 57A). Setae 4a situated at level of genital arch apex. Pregenital apodeme absent. Paragenital apodemes rudimentary, represented by narrow longitudinal sclerites bearing genital papillae. Opisthogastric shield represented by large entire plate, with small incision on anterior margin, with lateral margins convex, with deeply concave posterior margin, with poor sclerotization in central part between setae ps3 and along midline in posterior part, with longitudinal striation at posterior margin, greatest length 35 (33–47), greatest width 44 (42–45).

Accessory sclerites absent. Small postanal sclerites present. Setae g and ps3 filiform, slightly thickened basally, their bases arranged in low trapezium, and both situated on opisthogastric shield, distances between setae: g:g 7 (6– 7), g:ps3 7 (7–10), ps3:ps3 31 (29–32). Distance from genital arch apex to setae ps1 91 (90–95). Adanal suckers cylindrical, 18 (17–18) in length, 10 (9–11) in width; corolla with 15–16 small denticles.

Femora I, II with ventral crest. Solenidion σ 1 I shorter than genu I and situated closer to base of this segment, solenidion σ III situated approximately at midlevel of segment ( Fig. 57 C, D). Tarsus IV 22 (21–11) long, button-like seta d situated at midlevel of segment, button-like seta e with small nipple ( Fig. 57 E). Length of solenidia: σ 1 I 12 (11–12), σ III 11 (9–11), φ IV 26 (26–29) long.

FEMALE (range for 3 paratypes). Idiosoma, length × width, 355–365 × 160–170, hysterosoma length 240– 250. Prodorsal shield: shape and surface as in males, length 95–100, width 120–125. Distances between scapular setae se 84–86. Scapular shields narrow. Humeral shields fused with epimerites III, encompassing bases of setae cp. Setae c2 on antero-medial angles of these shields. Subhumeral setae c3 spiculiform, 13–15. Lobar region of opisthosoma distinctly delimited from remaining part of hysterosoma by a pair of angular extensions and concavities of the body margin immediately after them. Hysteronotal shield not split into anterior and lobar parts, with anterior margin straight, with anterior angles rounded, surface without ornamentation, total length including lobar area 260–270, width at anterior margin 125–135 ( Fig. 56 A). Supranal concavity present, circular in shape. Lobar area of hysteronotal shield 50–55 in length (from angular extensions to lobar apices), 72–75 wide. Opisthosomal lobes relatively short, slightly longer than wide at base; terminal cleft U-shaped, with lateral margins slightly divergent, 29–31 in length, 14–16 in width in anterior part. Setae h1 posterior to supranal concavity. Setae ps1 on lateral margins of terminal cleft, closer to lobar apices than to setae h2. Setae h2 slightly enlarged in basal part, shorter than terminal appendages, 80–90 long; setae h3 45–50 long, about 1/2 of terminal appendages. Distance between dorsal setae: c2:d2 72–75, d2:e2 92–98, e2:h2 52–55, h2:h 3 22–25, d1:d2 35–38, e1: e 2 25–32, h1:h 2 11–17, h2:ps 1 13–15, h1:h1 34–40, h2:h2 60–62.

Epimerites I shaped as in males. Epimerites IVa present, small. Epigynum almost semicircular, tips almost extending to level of genital papillae, lateral extensions short, length 35–38, greatest width 60–64 ( Fig. 56 B). Genital setae g slightly anterior to level of setae 3a. Translobar apodemes narrow, connected each other anterior to terminal cleft. Setae ps2 situated at level of posterior end of anal opening. Distance ps2:ps2 48–50, ps2: ps 3 15–20, ps3:ps 3 19–21. Flaps of anal opening not protruding into terminal cleft. Copulatory opening situated at anterior margin of fused translobar apodemes and covered with posterior ends of anal flaps. Head of spermatheca small cone-shaped and poorly sclerotized, primary spermaduct with ampuliform enlargement near copulatory opening, secondary spermaducts extremely short, 1.5–2 long ( Fig. 57 F).

Legs I, II as in males. Solenidion σ III situated in basal half of corresponding segment. Legs IV with ambulacral disc almost extending to level of setae h2. Length of solenidia: σ1 I 12–13, σ III 9–11, φ III 28–30, φ IV 20–22.

Differential diagnosis. The new species Proctophyllodes strictophyllus sp. n. formally belongs to the weigoldi species group and is very close to P. coerebae Atyeo and Braasch, 1966 , described from the same host, Coereba flaveola , in Jamaica ( Atyeo & Braasch 1966) in having an entire opisthogastric shield with convex lateral margins in males and an entire hysteronotal shield in females. Proctophyllodes strictophyllus differs from that species by the following features: in males, the terminal lamellae are noticeably longer (62–68 µm) and directed almost parallel to each other, the genital papillae are situated on rudimentary paragenital apodemes, the posterior margin of the opisthogastric shield has longitudinal striation; in females, the total length of the hysteronotal shield is longer (260–270 µm). In males of P. coerebae , the terminal lamellae are shorter (c. 50 µm), directed obliquely to the midline and with overlapping distal parts, the genital papillae are situated on soft tegument, and the posterior margin of the opisthogastric shield is without striation; in females, the total length of the hysteronotal shield is c. 230 µm.

Etymology. The specific epithet, combination of strictus (L. straight) and phyllo (Gr. leaf), refers to the terminal lamellae in males being almost parallel with each other.

Figures

FIGURE 55. Proctophyllodes strictophyllus Mironov sp. n., male. A—dorsal view, B—ventral view.

FIGURE 56. Proctophyllodes strictophyllus Mironov sp. n., female. A—dorsal view, B—ventral view.

FIGURE 57. Proctophyllodes strictophyllus 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—tibia and tarsus IV of male, dorsal view, Fspermatheca and spermaducts.