Proctophyllodes vesicularis 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 : 89-93

Proctophyllodes vesicularis Mironov sp. n.

( Figs. 52–54 )

Type material. Male holotype ( ZISP 6387 ), 7 male and 9 female paratypes from Euphonia anneae Cassin, 1865 (Fringillidae) , COSTA RICA, Tapantí National Park , Sector Tapantí, Cordillera de Talamanca Mts., 09°46'N, 83°47′W, 31 July 2009, collectors I. Literak, O. Sychra and M. Capek.

Depositories. Holotype, 5 male and 7 female paratypes (ZISP 6 387–6399)—ZISP; 1 male and 1 female paratype—UMMZ (BMOC-15-1028-002), 1 male and 1 female paratype—IMUCR.

Additional material. 7 males and 10 females (ZISP 6432–6448), same collection data as for the type material, except date, 5 August 2009.

Description. MALE (holotype, range for 7 paratypes in parentheses). Idiosoma, length × width, 240 (240– 250) × 130 (120–130), length of hysterosoma 150 (145–160). Prodorsal shield: antero-lateral extensions rounded, lateral margins entire, posterior margin straight, posterior angles roughly rounded, length 80 (80–82), width 100 (90–100), surface without ornamentation, setae ve rudimentary ( Fig.52 A). Scapular setae se separated by 53 (52– 54). Humeral shields well developed, fused with epimerites III, encompassing bases of setae cp. Setae c2 on narrow anteromedial extensions of humeral shields. Subhumeral setae c3 lanceolate, 17 (15–18) × 5 (4.5–5).

Hysteronotal shield: anterior margin straight anterior angles nearly right-angular, length 150 (145–150), width at anterior margin 93 (90–100), surface without ornamentation. Supranal concavity opened terminally, anterior end extending to midlevel between setae e1 and e2, length 38 (35–40). Posterior margin of opisthosoma between setae h2 slightly concave, shaped as blunt angle. Terminal lamellae narrow, tongue-shaped, not overlapping, with pennate venation; length 31 (26–32), maximal width 12 (12–13). Distances between hysteronotal setae: c2:d2 55 (50–55), d2:e2 64 (60–65), e2:h3 33 (32–35), d1:d2 22 (20–25), e1: e2 28 (26–28), h1:h3 13 (13–15), h2:h2 47 (45–50), h3:h3 31 (30–32), ps2:ps2 62 (60–62).

Epimerites I fused into a narrow U, without lateral extensions. Setae 4b situated at level of inner tips of epimerites IIIa. Epimerites IVa well developed, extending to and encompassing bases of setae 4a. Genital arch long and narrow, 38 (36–38) in length, 22 (20–22) in width, its base situated at midlevel of trochanters IV. Genital organ shaped as large and thin hook curved immediately rearward from genital arch apex, 39 (38–40) in length, 7 (6.5– 7.5) in width at base (in exactly frontal position it looks sword-shaped, Figs. 52 B, 54A, B), extending to level of genital arch base; genital sheath monotonously tapering apically, extending to apex of aedeagus. Setae 4a at level of anterior one third of genital arch apex. Pregenital apodeme absent. Genital papillae of each side on small elongated plate (rudimentary paragenital apodemes), not touching at bases. Opisthogastric shield H-shaped, transverse bridge narrow, without incisions; anterior branches adjoining to genital arch with long and acute lateral extensions; lateral margins convex; posterior branches long attenuate, slightly curved medially, flanking anal field from anterior and lateral sides. Accessory sclerites reniform. Postanal sclerites present, bow-shaped, encompassing adanal suckers postero-laterally. Setae g and ps3 filiform, their bases arranged in low trapezium, setae g on anterior margin of transverse bridge, setae ps3 on lateral parts of opisthogastric shield; distances between these setae: g:g 7 (7–9), g:ps3 3 (3–4.5), ps3:ps3 29 (28–31). Distance from genital arch apex to setae ps1 106 (104–110). Adanal suckers cylindrical, 14 (13–15) in length, 10 (10–12) in width apically; corolla with 8–10 small denticles on anterior part, posterior part smooth.

Femora I, II with ventral crest. Solenidion σ 1 I slightly shorter than genu I, situated at midlevel of segment ( Fig. 54 C, D), solenidion σ III situated closer to distal margin of genu III. Tarsus IV 22 (22–25) long, button-like seta d situated in proximal half of this segment, button-like seta e with minute nipple ( Fig. 54 E). Solenidion φ IV extending to midlevel of ambulacral disc. Length of solenidia: σ 1 I 40 (38–42), σ III 21 (20–21) φ IV 0 0 0 (35–37).

FEMALE (range for 9 paratypes). Idiosoma, length × width, 380–390 × 150–160, length of hysterosoma 265– 275. Prodorsal shield: shape and surface as in males, length 100–105, width 120–125. Scapular setae se separated by 70-75. Scapular shields narrow. Humeral shields fused with epimerites III, encompassing bases of setae cp. Setae c2 on anterior end of humeral shields. Subhumeral setae c3 narrowly lanceolate, 20–22 × 5–6. Lobar region of opisthosoma distinctly separated from remaining part of hysterosoma, hysteronotal shield split dorsally into anterior and lobar parts by narrow transverse furrow and remains connected ventro-laterally by narrow sclerotized bands. Anterior hysteronotal shield: 210–215 in length, 110–115 in width, anterior margin straight, posterior margin slightly concave with a pair of small extensions bearing setae h1, surface without ornamentation ( Fig. 53 A). Lobar shield entire, 60–65 in length, 80–85 in width, anterior margin with shallow median concavity. Opisthosomal lobes relatively short, their length approximately equal to width at base. Terminal cleft narrow U-shaped, 32–34 in length, 16–18 in width at midlevel. Setae h1 situated on posterior margin of anterior hysteronotal shield, on small extensions. Setae ps1 on lateral margins of terminal cleft, close to level of lobar apices. Setae h2 enlarged in basal part, approximately half the length of terminal appendages, 70–75 long; setae h3 38–40 long, about 1/4 of terminal appendages. Distance between dorsal setae: c2:d2 74–78, d2:e2 85–100, e2:h2 60–66, h2:h 3 25–28, d1:d2 33–38, e1: e2 32–35, h1:h 2 28–30, h2:ps 1 23–25, h1:h1 38–44, h2:h2 70–72.

Epimerites I shaped as in males, with very thin connecting commissure. Epimerites IVa small. Epigynum semicircular, tips not extending to level of anterior genital papillae, lateral extensions absent, length 38–42, greatest width 64–68. Genital papillae situated on small ovate plates ( Fig. 53 B). Genital setae g anterior to level of setae 3a. Translobar apodemes wide, connected each other anterior to terminal cleft. Setae ps2 situated at level of posterior end of anal opening. Distance between pseudanal setae: ps2:ps2 44–50, ps3:ps 3 18–21, ps2:ps 3 31–33.Flaps of anal opening not protruding into terminal cleft. Copulatory opening large, with sclerotized margin, covered with posterior ends of anal opening flaps. Head of spermatheca simple cone-like; distal part of primary spermaduct near copulatory opening with large ovate enlargement 31–36 × 20–22; secondary spermaducts extremely short, 2–3 long ( Fig. 54 F).

Legs I, II as in males. Solenidion σ III situated in basal half of genu III. Legs IV with ambulacral disc extending to level of setae f2. Length of solenidia: σ 1 I 15–16, σ III 7–9, φ III 34 –36, φ IV 20–22.

Differential diagnosis. As with the previous species, Proctophyllodes vesicularis sp. n. belongs to the thraupis species group in having, in males, the genital arch narrow and the opisthogastric shield with a narrow anterior incision and with claw-shaped posterior branches. Among the three species previously known in this group, P. vesicularis is most similar to P. thraupis Atyeo and Braasch, 1966 and P. megathraupis Atyeo and Braasch, 1966 in having the opisthogastric shield with convex lateral margins and claw-shaped posterior branches in males. Males of P. vesicularis differ from P. thraupis and P. megathraupis by the following features: the terminal lamellae are shorter and narrower, 26–32 × 12–13 µm (vs. 42 × 22 µm in P. thraupis and 80 × 28 µm in P. megathraupis ), the aedeagus extends to the level of the genital arch base (vs. distinctly extending beyond in P. thraupis and not extending in P. megathraupis ), and epimerites IVa extend to setae 4a (vs. not extending in both the species). Females of P. vesicularis differ from those of P. thraupis (females of P. megathraupis are unknown) by the following features: the dorsal shields lack any ornamentation (vs. with numerous circular lacunae), the length of macrosetae h2 are half the length of the terminal appendages (vs. subequal in length), and the length of setae h3 are about 1/4 of the terminal appendages (vs. half the length or more).

Etymology. The specific epithet is derived from vesicle (L., little bladder) to refer to the ovate enlargement of the primary spermaduct in females.

Figures

FIGURE 52. Proctophyllodes vesicularis Mironov sp. n., male. A—dorsal view, B—ventral view.

FIGURE 53. Proctophyllodes vesicularis Mironov sp. n., female. A—dorsal view, B—ventral view.

FIGURE 54. Proctophyllodes vesicularis Mironov sp. n., details. A—opisthosoma of male, ventral view, B—genital apparatus of male, ventrolateral view, C, D—legs I and II of male, dorsal view, E—tibia and tarsus IV of male, dorsal view, Fspermatheca and spermaducts.