Tyranniphyllodes empidonicus, Mironov & Galloway, 2020

Mironov, Sergey V. & Galloway, Terry D., 2020, Two new feather mites of the subfamily Proctophyllodinae (Acariformes: Proctophyllodidae) from the Yellow-bellied Flycatcher Empidonax flaviventris (Passeriformes: Tyrannidae) in Canada, Acarologia 60 (4), pp. 878-891 : 885-890

Tyranniphyllodes empidonicus sp. n.

Zoobank: 7082AC4D-DAB2-49A3-83E6-8E6FB441055A

Figures 4–6

Type material — Male holotype, 2 males, 11 females from Empidonax flaviventris

(Tyrannidae), (YBFL/430/CEN/09), (SM 2000), Canada, Manitoba, Winnipeg, 5 June 2009,

coll. T.D Galloway and J.A. McLeod.

Depository — Holotype, 1 male and 3 female paratypes — CNC, remaining paratypes —

WRME and ZISP.

Description — Male (holotype, range for 2 paratypes in parentheses) ( Figures 4 , 6 A­D, H).

Idiosoma, length × width, 250 (235–245) × 115 (110–115), length of hysterosoma 160 (155–

160). Prodorsal shield split at level of scapular setae into anterior and posterior parts; anterior part shaped as longitudinal plate with concave lateral margins and rounded posterior end,

posterolateral margins with blunt­angular suprategumental extensions, length along midline 72

(68–72), greatest width 48 (43–45); posterior part trapezoidal in form, posterior margin slightly convex, small anterior extensions encompass bases of setae se, length 25 (22–27), width at posterior margin 60 (57–60). Bases of scapular setae se separated by 34 (34–37). Inner margin of scapular shields with widely rounded suprategumental extension. Humeral shields absent,

setae c2 and cp on striated tegument. Setae c3 narrowly lanceolate, 15 (15–18) long, about 3

wide. Distance between prodorsal and hysteronotal shields 15 (15–20). Hysteronotal shield:

165 (155–160) in length and 70 (60–65) in width; anterior margin concave, surface without ornamentation. Setae c1 on hysteronotal shield. Setae d1, d2 and e2 absent. Opisthosomal lobes poorly developed, as a pair of short, angular extensions bearing setae h3 on apices; terminal cleft represented by as shallow concavity, 10 (9–12) long. Supranal concavity groove­like, 37

(34–35) long. Terminal lamellae tongue­shaped, with fine dorsal punctation at base, 30 (30–35)

long, 15 (13–15) wide at base, distance between inner margins of lamellae about 8 (8–10).

Setae h1 slightly anterior to level of setae h2. Setae ps1 on margin of terminal cleft or on the base of lamella, slightly anterior to level of setae h3. Distance between dorsal setae: c2:e1 100 (95–100), e1:h3 60 (58–60), e2:h3 000 (50–55), h2:h2 50 (48–50), h3:h3 33 (30–33), ps2:ps2

62 (60–62), h1:h3 14 (10–15).

Epimerites I fused into a Y, sternum about 1/4 of the total length of epimerites. Epimerites I, II without wide surface fields; bases of these epimerites I not inflated. Inner ends of epimerites IIIa with small sclerotized extensions directed backward. Epimerites IVa elongated forming paragenital apodemes, their anterior ends encompass setae 4a. Rudimentary sclerites rEpIIa absent. Bases of trochanters III flanked by sclerotized bands stretching from epimerites

III. Bases of trochanter IV partly flanked by triangular sclerotized fields of epimerites IVa. Genital arch of moderate size, 17 (17–18) long and 27 (26–28) wide, with apex at midlevel of trochanters IV; aedeagus thin stylet­like, 30 (30–32) long, extending to midlevel between setae

g and ps3. Genital sheath with distal half abruptly narrowed, not extending to tip of aedeagus. Distance from genital arch apex to level of setae h3 80 (75–80). Bases of genital papillae connected, situated at level of genital arch apex. Genital shield shaped as small transverse oval bearing setae g. Adanal shields represented by a pair of longitudinal sclerites laterally flanking anal field bearing setae ps3. Adanal suckers circular, 13 (12–13) in diameter; corolla without denticles. Setae 4b posterior to level of setae 3a. Distance between ventral setae: 3a:4b 15 (14–15), 4b:4a 22 (18–20), 4a:g 27 (27–30), g:ps3 11 (11–12), g:g 7 (7–8), ps3:ps3 10 (9–11), ps3:h3 52(45–48).

Legs I noticeably thicker and slightly longer than legs II; femur II with noticeable bluntly rounded ventral extension. Solenidion σ I about 1.5 times longer than genu I and situated closer to base of this segment. Solenidion σ of genu III slightly closer to base of this segment. Legs IV with ambulacral disc extending to midlength of terminal lamellae. Tarsus IV 27 (27–28) long, with claw­like apical process; setae d, e button­like, setae d situated at midlength of this segment, seta e on apical claw­like process. Solenidion φ of tibia IV not extending to apex of tarsus IV. Length of solenidia: σ I 30 (30–32), σ III 20 (18–20), φ IV 25 (24–27).

Females (range for 10 paratypes) ( Figures 5 , 6 E­G). Idiosoma, length × width, 355–385

× 125–145, length of hysterosoma 270–285. Prodorsal shield: entire, occupying most of prodorsum, anterolateral extensions fused with epimerites Ia on the margin of propodosoma, lateral margins without incisions, posterior margin straight or slightly sinuous, posterior corners acute, length 75–80, width 90–100, surface without ornamentation. Bases of setae se separated by 55–60. Humeral shields absent, setae c2 and cp on striated tegument. Setae c3 narrowly lanceolate, 13–15 long, about 3 wide. Distance between prodorsal and hysteronotal shields 8–10. Hysteronotal shield separated dorsally by transverse band of soft tegument into anterior and lobar parts and connected ventrolaterally. Anterior hysteronotal shield: 200–215 in length and 95–100 in width at anterior margin, anterior margin slightly concave, posterior margin almost straight, surface with two pairs of poorly sclerotized areas in posterior half. Setae c1

on anterior hysteronotal shield. Setae d1, d2, and e2 absent. Lobar shield: 70–74 in length and 65–75 in width. Opisthosomal lobes 1.5 times longer than wide at base. Terminal cleft almost parallel­sided, anterior part slightly narrower than posterior part, 47–50 in length, 8–10 in width in anterior part. Supranal concavity absent. Setae h2 enlarged in basal part, with long filiform apical part, 130–150 in length, about 5 wide; setae h3 56–50 long, about 2/3 of terminal appendages. Setae h1 inserted on soft tegument between the anterior hysteronotal and lobar shields. Setae ps1 on inner margins of opisthosomal lobes, closer to setae h3 than h2. Distance between dorsal setae c2:e1 135–145, e1:h3 75–82, h2:h3 40–44, h1:h2 24–36, h1:h1 25–28,

h2:h2 57–65, h2:ps1 23–25.

Epimerites I fused into a narrow U with divergent branches. Epimerites I, II without sclerotized fields, bases of these epimerites not inflated. Epimerites IVa large, shaped and narrow triangles. Coxal fields II with large sclerotized areas laterally. Bases of trochanters III partly flanked by sclerotized bands connected to epimerites III. Epigynum horseshoe­shaped, thin, with acute tips touching bases of setae g, 50–58 in length, 52–58 in width, without lateral extensions. Genital papillae on posterior ends of epigynum. Setae ps2 at midlevel of anal opening. Translobar apodemes not fused to each other anterior to terminal cleft. Copulatory opening situated on small cone­like extension, immediately posterior to anal opening. Primary spermaduct with wall slightly thickened near entering into head of spermatheca; secondary spermaducts 10–12 long. Distance between pseudanal setae: ps2:ps2 32–40, ps3:ps3 15–18, ps2:ps3 15–17.

Legs I, II subequal in size, femora I, II without ventral extension. Genua III, IV with rounded dorsal crest. Solenidion σ of genu III situated at midlength of this segment. Legs IV with ambulacral disc barely extending to level of setae f2. Solenidion φ of tibia IV similar in length to tarsus IV. Length of solenidia: σ I 34–37, σ III 24–25, φ III 28–32, φ IV 30–35.

Differential diagnosis — Tyranniphyllodes empidonicus sp. n. differs from T. pitangi in a number of characters. In both sexes of T. empidonicus , setae d1 are absent; in males, the posterior piece of the prodorsal shield is trapezoidal in shape with acute posterior corners,

epimerites I are fused into a Y, epimerites IVa are strongly elongated and encompass bases of setae 4a, the genital sheath is strongly narrowed in the distal half and does not extend to the tip of aedeagus, the genital shield is shaped as a small transverse oval bearing setae g, and the adanal shield is represented by a pair of longitudinal sclerites laterally flanking the anal field;

in females, the anterolateral extensions of the prodorsal shield are fused with epimerites Ia,

the posterior corners of this shield are directed posterolaterally, the posterior margin is almost straight, and setae se are on this shield and distant from its lateral margins. In both sexes T of.

pitangi , setae d1 are present; in males, the posterior piece of the prodorsal shield is shaped as a narrow transverse plate with blunt­angular posterior margin, epimerites I are fused into a V,

epimerites IVa are short and not extending beyond the level of genital arch apex, the genital sheath is bifurcate apically and extends beyond the tip of aedeagus, the genital and adanal shields are fused into the entire H­shaped opisthogastric shield; in females, the anterolateral extensions of the prodorsal shield are absent, the posterior corners of this shield are directed laterally, the posterior margin is strongly convex, and setae se are situated on the lateral margins of this shield.

Etymology — The specific epithet is derived from the generic name of the type host.

Figures

Figure 4 Tyranniphyllodes empidonicussp. n., male: A – dorsal view, B – ventral view.

Figure 5 Tyranniphyllodes empidonicussp. n., female: A – dorsal view, B – ventral view.

Figure 6 Tyranniphyllodes empidonicussp. n., details: A–D – legs I–IV of male, respectively, E, F – legs III, IV of female, respectively, G – spermatheca and spermaducts, H – opisthosoma of male, ventral view. Abbreviations: hs– head of spermatheca, pd– primary spermaduct, sd – secondary spermaducts.