Proctophyllodes arremoni 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 : 82-85

Proctophyllodes arremoni Mironov sp. n.

( Figs. 46–48 )

Type material. Male holotype ( ZISP 6424 ), 5 male and 6 female paratypes from Arremon brunneinucha (Lafresnaye, 1839) (Emberizidae) , COSTA RICA, Tapantí National Park , Sector Tapantí, Cordillera de Talamanca Mts., 09°46'N, 83°47′W, 3 August 2009, collectors I. Literak, O. Sychra and M. Capek.

Depositories. Holotype, 3 male and 4 female paratypes (ZISP 6 425–6431)—ZISP; 1 male and 1 female paratype—UMMZ (BMOC-15-1028-004), 1 male and 1 female paratype—IMUCR.

Description. MALE (holotype, range for 5 paratypes in parentheses). Idiosoma, length × width, 245 (235– 245) × 125 (115–125), length of hysterosoma 150 (150–155). Prodorsal shield: antero-lateral extensions long and rounded terminally, lateral margins entire, posterior margin nearly straight with small median extension, posterior angles roughly rounded, length 80 (75–80), width 98 (90–98), surface with numerous circular lacunae, setae ve rudimentary ( Fig. 46 A). Scapular setae se separated by 52 (50–55). 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, 16 (15–16) × 4 (4–4.5). Hysteronotal shield: anterior margin straight or slightly concave, anterior angles almost right-angular, length 155 (145–155), width at anterior margin 90 (85–90), surface with numerous circular lacunae. Supranal concavity closed terminally, anterior end extending slightly beyond level of setae e2, length 37 (35–40). Posterior margin of opisthosoma between setae h2 slightly sinuous. Terminal lamellae wide, cordiform, not overlapping, with pennate venation; length 45 (43–45), maximum width 29 (25–30). Distances between hysteronotal setae: c2:d2 58 (52–58), d2:e2 60 (55–60), e2:h3 33 (30–33), d1:d2 25 (18–25), e1: e2 30 (28–30), h1:h3 18 (17–18), h2:h2 58 (55–59), h3:h3 40 (36–40), ps2: ps2 65 (62–65).

Epimerites I fused into a narrow U, without lateral extensions. Setae 4b situated posterior to inner tips of epimerites IIIa. Epimerites IVa developed, small, not extending to setae 4a. Genital arch of moderate size, narrow, 23 (21–23) in length, 20 (18–20) in width, its base situated at midlevel of trochanters IV. Genital organ: aedeagus sword-shaped, turned rearward immediately from genital arch apex, extending slightly beyond level of setae ps3, 46 (44–46) in length; genital sheath relatively wide, tapering distally, not extending to tip of aedeagus ( Fig. 46 B, 48A). Setae 4a at level of genital arch apex. Paragenital and pregenital apodemes absent. Genital papillae not connected. Opisthogastric shield roughly H-shaped, anterior margin shaped as blunt-angular concavity; anterior branches adjoining to genital arch and without lateral extensions, posterior margin of transverse bridge with shallow incision between bases of setae g; lateral margins almost straight and slightly divergent posteriorly, flanking anal field antero-laterally; inner margins of each piece of opisthogastric shield with incisions between bases of setae g and ps3; greatest length 42 (40–45), greatest width (posteriorly) 35 (35–38). Accessory sclerites rudimentary. Postanal sclerites small triangular. Setae g and ps3 filiform, their bases arranged in moderate trapezium, setae g on anterior margin of transverse bridge, setae ps3 on lateral parts of opisthogastric shield; distances between these setae: g:g 9 (8–9), g:ps3 10 (8–10), ps3:ps3 19 (18–20). Distance from genital arch apex to setae ps1 93 (90–95). Adanal suckers cylindrical, with obliquely cut base, with apical part slightly inflated and slightly wider than diameter of corolla, 18 (17–17) in length, 8 (7–9) in greatest width (at apex); corolla with radial striae in posterior part, anterior part smooth.

Femora I, II with ventral crests. Solenidion σ 1 I shorter than genu I and situated at midlevel of this segment or slightly closer to its base ( Fig. 48 B, C). Solenidion σ III situated in distal part of genu III. Tarsus IV 23 (22–23) long, button-like seta d twice as wide as button-like seta e and situated closer to base of this segment, seta e with minute nipple ( Fig. 48 D). Length of solenidia: σ 1 I 13 (11–13), σ III 9 (8–9), φ IV 33 (30–33).

FEMALE (range for 6 paratypes). Idiosoma, length × width, 350–365 × 140–150, hysterosoma length 240– 250. Prodorsal shield: antero-lateral extensions rounded, lateral margins entire, posterior margin straight with small median extensions, posterior angles roughly rounded, length 88–92, width 105–110, surface with numerous large circular lacunae, setae ve rudimentary ( Fig. 47 A). Scapular setae se separated by 65–70. Scapular shields narrow. Humeral shields fused with epimerites III, encompassing bases of setae cp. Setae c2 on antero-median angles of humeral shields. Subhumeral setae c3 narrowly lanceolate, 20–22 × 6–7. Lobar region of opisthosoma distinctly separated from remaining part of hysterosoma, hysteronotal shield split dorsally into anterior and lobar parts by narrow transverse furrow but remains connected ventro-laterally by sclerotized bands. Anterior hysteronotal shield roughly rectangular, anterior margin straight, lateral margins with rough tubercles in posterior third, posterior margin with wide and short median extension, surface with numerous circular lacunae, length 205–215, width at anterior margin 100–105. Lobar shield entire, 50–55 in length, 85–90 in width, anterior margin concave. Opisthosomal lobes relatively short, length similar to their width at base; terminal cleft narrow U-shaped, 30–40 in length, 8–12 in width. Setae h1 situated on posterior margin of anterior hysteronotal shield. Setae ps1 on lateral margins of terminal cleft, closer to lobar apices than to setae h2. Setae h2 enlarged in basal part, similar to or slightly longer than terminal appendages, 70–80 long; setae h3 50–55 long, half the length of terminal appendages. Distance between dorsal setae: c2:d2 70–75, d2:e2 100–105, e2:h2 35–38, h2:h 3 30–35, d1:d 2 25–28, e1: e2 40– 43, h1:h 2 15–17, h2:ps 1 20–21, h1:h 1 22-30, h2:h2 68–70.

Epimerites I fused into a V or their posterior tips not connected ( Fig. 47 B). Epimerites IVa present, small. Epigynum semicircular, tips extending to level of anterior genital papillae, lateral extensions present, poorly sclerotized, length 32–35, greatest width 55–60. Genital papillae not connected at bases. Genital setae g anterior to level of setae 3a. Translobar apodemes wide, connected each other anterior to terminal cleft. Setae ps2 situated at midlevel of anal opening or slightly posterior; distance between setae: ps2:ps2 42–43, ps2:ps 3 15–16, ps3:ps 3 16– 19. Flaps of anal opening not protruding into terminal cleft. Copulatory opening on small circular plate, covered with posterior ends of anal opening flaps. Head of spermatheca small cone-shaped, poorly sclerotized; proximal part of primary spermaduct monotonously enlarging to head of spermatheca, distal part of primary spermaduct near copulatory opening with small ovate enlargement about 4–5 in transverse diameter; secondary spermaducts extremely short, 2–3 long ( Fig. 48 E).

Legs I, II as in males. Solenidion σ III situated in basal half of segment. Legs IV with ambulacral disc extending to level of contraction separating lobar region. Length of solenidia: σ1 I 13–15, σ III 7–8, φ III 30–33, φ IV 18–20.

Differential diagnosis. The new species, Proctophyllodes arremoni sp. n., belongs to the weigoldi group, characterized by the male genital organ extending to the level of setae ps3 or slightly beyond it. The new species is most similar to P. habiae Atyeo and Braasch, 1966 , described from Habia rubica (Vieillot) (Cardinalidae) , in having, in males, the cordiform terminal lamellae, the genital sheath not extending to the tip of the aedeagus, and the opisthogastral shield with incisions between bases of setae g and ps3. Proctophyllodes arremoni differs from P. habiae by the following features: in males, the aedeagus extends distinctly beyond the level of setae ps3, the accessory sclerites are rudimentary; in females, setae h3 are approximately half the length of the terminal appendages, and the lateral margins of the hysteronotal shield bear small tubercules. In males of P. habiae , the aedeagus does not extend beyond the level of setae ps3, the accessory sclerites are reniform and heavily sclerotized; in females, setae h3 are approximately 3/4 the length of the terminal appendages, and the lateral margins of the hysteronotal shield are without tubercules.

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

Figures

FIGURE 46. Proctophyllodes arremoni Mironov sp. n., male. A—dorsal view, B—ventral view.

FIGURE 47. Proctophyllodes arremoni Mironov sp. n., female. A—dorsal view, B—ventral view.

FIGURE 48. Proctophyllodes arremoni Mironov sp. n., details. A—opisthosoma of male, ventral view, B, C—legs I and II of male, dorsal view, D—tibia and tarsus IV of male, dorsal view, E—spermatheca and spermaducts.