Proctophyllodes euphoniae 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 : 85-89

Proctophyllodes euphoniae Mironov sp. n.

( Figs. 49–51 )

Type material. Male holotype ( ZISP 6287 ), 2 male and 9 female paratypes from Euphonia hirundinacea Bonaparte, 1838 (Fringillidae) , COSTA RICA, Rincón de la Vieja National Park , 10°46'N, 83°47′W, 19 August 2009, collectors I. Literak, O. Sychra and M. Capek.

Depository. Holotype, 1 male, 8 female paratypes (ZISP 6286–6296)—ZISP; 1 male and 1 female paratype— IMUCR.

Description. MALE (holotype, range for 2 paratypes in parentheses). Idiosoma, length× width, 225 (220–230) × 125 (120–135), length of hysterosoma 140 (140–150). Prodorsal shield: represented by alveoli, antero-lateral extensions rounded, lateral margins entire, posterior margin straight with two small tooth-like extensions, posterior angles roughly rounded, length 80 (78–82), width 97 (95–100), surface except central area with numerous circular and ovate lacunae, setae ve rudimentary ( Fig. 49 A). Scapular setae se separated by 60 (58–62). Scapular shields narrow. Humeral shields well developed, fused with epimerites III, encompassing bases of setae cp. Setae c2 on antero-median angles of humeral shields. Subhumeral setae c3 lanceolate, 15 (13–15) × 4 (4–5). Hysteronotal shield: anterior margin straight or slightly concave, anterior angles rounded, length 155 (150–155), width at anterior margin 100 (98–105), surface with numerous circular lacunae. Supranal concavity opened terminally, anterior end extending to midlevel between setae e1 and e2, length 53 (50–55). Posterior margin of opisthosoma between setae h2 almost straight. Terminal lamellae narrow, tongue-shaped, not overlapping, with pennate venation; length 55 (52–55), maximal width 18 (17–20). Distances between hysteronotal setae: c2:d2 60 (55–62), d2: e2 57 (55–60), e2:h3 38 (35–43), d1:d2 30 (30–36), e1: e2 25 (25–30), h1:h3 15 (15–16), h2:h2 60 (58–60), h3:h3 38 (38–43), ps2:ps2 75 (73–75).

Epimerites I fused into a narrow U, without lateral extensions. Setae 4b situated posterior to inner tips of epimerites IIIa. Epimerites IVa well developed, extending to and encompassing bases of setae 4a. Genital arch long and narrow, 25 (24–25) in length, 20 (18–20) in width, its base situated at midlevel of trochanters IV. Genital organ shaped as large hook (in exactly frontal position it looks sword-like, Fig. 51 A, B), curved rearward immediately from genital arch apex, 35 (35–40) in length, 4.5 (4.5–5) in width at base, extending to midlevel between arch tips and level of setae g; genital sheath abruptly narrowed at midlength of aedeagus, tapering apically, extending to apex of aedeagus ( Fig. 49 B). Setae 4a at level of anterior one third of genital arch apex. Pregenital apodemes absent. Genital papillae on small longitudinal sclerites (rudimentary paragenital apodemes), not touching at bases. Opisthogastric shield roughly H-shaped, transverse bridge wide without incisions; anterior branches adjoining genital arch and with acute lateral extensions, lateral margins slightly convex with triangular extensions (slightly anterior to level of transverse bridge); posterior branches long attenuate, slightly curved medially, flanking anal field antero-laterally. Accessory sclerites shaped as apple seeds. Postanal sclerites present, C-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 setae: g:g 10 (9–10), g:ps3 5 (4–5), ps3:ps3 37 (35–38). Distance from genital arch apex to setae ps1 97 (95–100). Adanal suckers cylindrical, inflated in medial part and slightly wider than diameter of corolla, 20 (19–20) in length, 14 (12.5–14) in width at base; corolla with 11–13 small denticles on anterior part, posterior part smooth.

Femora I, II with narrow ventral crest. Solenidion σ 1 I shorter than genu I and situated at midlevel of this segment ( Fig. 51 C, D). Solenidion σ III situated at midlevel of genu III or slightly closer to its distal margin. Tarsus IV 25 (25–28) long, button-like seta d situated at midlevel of this segment, button-like seta e with minute nipple ( Fig. 51 E). Length of solenidia: σ1 I 8 (8–12), σ III 6 (6–8), φ IV 35 (30–35).

FEMALE (range for 9 paratypes). Idiosoma, length × width, 320–330 × 000–206, length of hysterosoma 215– 230. Prodorsal shield: shape and surface as in males, length 90–95, 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 c 2 in anterior angles of humeral shields. Subhumeral setae c3 lanceolate, 17–20 × 5–6.5. 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 sclerotized bands. Anterior hysteronotal shield: 180–190 in length and 115–120 in width, anterior margin straight, with lateral margins shallowly concave, posterior margin straight, with a pair of small tooth-like extension bearing setae h1, surface with numerous circular lacunae ( Fig. 50 A). Lobar shield entire, 45–48 in length, 72–80 in width, anterior margin almost straight. Opisthosomal lobes short, at base wider than long; terminal cleft narrowly V-shaped, 27–30 in length. Setae ps1 on lateral margins of terminal cleft, close to lobar apices. Setae h2 thickened in basal part, shorter than terminal appendages, 70-80 long; setae h3 32–37 long, about 1/4 the length of terminal appendages. Distance between dorsal setae: c2:d2 70–75, d2:e2 85–90, e2:h2 55–58, h2:h 3 17–23, d1:d 2 30–35, e1: e2 37–40, h1:h 2 24–26, h2:ps 1 15–17, h1:h1 36–38, h2:h2 65–68.

Epimerites I shaped as in males, with very thin connecting commissure. Epimerites IVa present, small. Epigynum semicircular, tips extending to level of anterior genital papillae, lateral extensions absent, length 30–35, greatest width 55–62. Genital papillae on small ovate plates ( Fig. 50 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 half of anal opening. Distance between pseudanal setae: ps2:ps2 40–43, ps3:ps 3 15–17, ps2:ps 3 27–30. Flaps of anal opening not protruding into terminal cleft. Copulatory opening situated on small circular plate, covered with posterior ends of anal flaps. Head of spermatheca narrow cone-shaped; primary spermaduct without enlargements; secondary spermaducts extremely short, 1.5–2 long ( Fig. 51 F).

Legs I, II as in males. Solenidion σ III situated in basal half of segment. Legs IV with ambulacral disc extending to level setae f2. Length of solenidia: σ1 I 12–15, σ III 10–12, φ III 35 –37, φ IV 20–25.

Differential diagnosis. The new species Proctophyllodes euphoniae 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 claw-shaped posterior branches. Among the three species previously included in this group, the new species is most similar to P. thraupis Atyeo and Braasch, 1966 from Thraupis abbas (Deppe, 1830) ( Thraupidae ) from Mexico ( Atyeo & Braasch 1966), in having numerous lacunae on the dorsal shields in both sexes and the aedeagus extending beyond the base of the genital arch in males. Proctophyllodes euphoniae differs from P. thraupis by the following features: in males, the lateral margins of the opisthogastric shield have large triangular extensions at the level of the transverse bridge, epimerites IVa extend to and encompass the bases of setae 4a, and the terminal lamellae are longer (52–55 µm); in females, macrosetae h2 are shorter that the terminal appendages, and setae h3 are about 1/3 the length of the terminal appendages. In males of P. thraupis , the lateral margins of the opisthogastric shield are convex and smooth, epimerites IVa do not extend to the bases of setae 4a, and the terminal lamellae are shorter (c. 42 µm); in females, macrosetae h2 are similar in length to the terminal appendages, and setae h3 are 1/2–3/4 the length of 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 49. Proctophyllodes euphoniae Mironov sp. n., male. A—dorsal view, B—ventral view.

FIGURE 50. Proctophyllodes euphoniae Mironov sp. n., female. A—dorsal view, B—ventral view.

FIGURE 51. Proctophyllodes euphoniae 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.