Tyrannidectes berlai Mironov, 2008

Mironov, Sergey V., Literak, Ivan & Čapek, Miroslav, 2008, New feather mites of the subfamily Pterodectinae (Acari: Astigmata: Proctophyllodidae) from passerines (Aves: Passeriformes) in Mato Grosso do Sul, Brazil, Zootaxa 1947, pp. 1-38 : 23-27

Tyrannidectes berlai Mironov sp. n.

( Figs. 13–15)

Type material. Male holotype ( ZISP 4386 ), 8 male and 3 female paratypes ex Myiarchus tyrannulus (Muller,

1776) ( Tyrannidae ), Brazil, Mato Grosso do Sul, Pantanal, Fazenda Monte Alegre , 21°30´S, 56° 40´W, 20 July 2006, I. Literak and M. Č apek. Holotype, 3 male and 1 female paratypes ( ZISP 4386 - 4390 ) – ZISP,

remaining paratypes – PaU.

Additional material. 3 males and 3 females ex Myiarchus ferox (Gmelin, 1789) , Brazil, Mato Grosso do Sul, Nova Andradina , 22° 15’ S, 53° 21’ W, 30 July 2006, I. Literak and M. Č apek . 2 males and 2 females

(ZISP 4391-4394) – ZISP, remaining specimens – PaU.

Male (holotype, measurements for 8 paratypes in parenthesis). Idiosoma, length × width, 395 (380–405) × 168 (165–180), length of hysterosoma 245 (235–245). Prodorsal shield: 128 (104–125) × 139 (126–135), with lateral margins entire, antero-lateral extensions narrow and acute, posterior margin with pair of wide and shallow concavities; surface uniformly punctate; scapular setae se separated by 73 (70–75) ( Fig. 13 A). Setae cp situated ventrally on soft tegument. Humeral shields rudimentary, situated anterior to bases of setae cp. Setae c2 situated dorsally on soft tegument. Subhumeral setae c3 lanceolate, 31 (26–33) × 7 (6–8). Hysteronotal shield: greatest length 240 (230–245), width in anterior part 110 (105–115), anterior margin strongly concave, surface uniformly punctate. Distance between prodorsal and hysteronotal shields 45–65. Opisthosomal lobes as long as wide at base; posterior ends of lobes roughly rounded; setae h2 and h3 situated on posterior margin of lobes. Terminal cleft as a wide inverted U with divergent branches, 28 (26–34) in length; lateral margins of cleft with narrow interlobar membranes in distal part. Supranal concavity present. Setae f2 situated anterior to bases of setae ps2. Setae h1 situated at level of supranal concavity. Setae h3 thick setiform, 25 (20– 25 long); setae ps2 with filiform apical part, 50 (48–60) long; setae ps1 filiform, minute, 7 (7–9) long, situated approximately at midlevel of terminal cleft, slightly distant from its margin. Distance between dorsal setae: se:c2 66 (65–82), c2:d2 95 (95–100), d2:e2 92 (85–96), e2:h3 50 (50–55), d1:d2 20 (20–25), e1: e2 40 (30– 40), h1:ps2 26 (17–26), h2:h2 64 (55–65), h3:h3 46 (37–45), ps2:ps2 80 (73–80).

Epimerites I fused as a narrow U, posterior ends of epimerites I with short and acute lateral extensions ( Fig. 13 B). Coxal fields I, II without large sclerotized areas; inner margin of epimerites II with short angular extension. Rudimentary sclerite rEpIIa absent. Coxal fields II widely open, coxal III nearly closed. Coxal fields IV without large sclerotized area. Epimerites IVa absent. Genital arch of moderate size, 22 (20–22) × 48 (46–50); basal sclerite of genital apparatus with rounded posterior margin; aedeagus straight, sword-shaped, 78 (72–80) long, extending to anterior end of anal opening; genital papillae present, separated from each other. Genital and adanal shields absent. Anal suckers 12 (11–12) in diameter, corolla smooth. Opisthoventral shields narrow and short, posterior end extending to bases of setae ps2, inner margins with setae ps3 situated slightly posterior to anal suckers and with little tooth at level of lateral setae f2. Coxal setae 3a and 3b approximately at same transverse level. Distance between ventral setae: 3a:4a 53 (50–54), 4a:g 35 (32–36), g:ps3 60 (55–60), ps3:ps3 82 (73–80), ps3:h3 27 (31–33).

Legs I slightly thicker than legs II, femora I, II with narrow ventral crests, other segments of these legs without any processes. Solenidion σ 1 of genu I short, stick-like, 17 (15–18) long, situated at midlevel of segment; seta cG I, II, mG I, II thin setiform ( Figs 14 A, B). Legs III and IV similar in form and size. Solenidion σ 1 of genu III slightly closer to distal part of segment. Seta d of tarsus II subequal to corresponding seta f, and seta d of tarsus III shorter than corresponding seta f. Tarsus IV 34 (34–35) long, without apical claw-like process; setae d, e button-like, seta d slightly closer to base of segment, seta e at apex of segment; solenidion ϕ of tibia IV extending beyond distal margin of ambulacral disc ( Fig. 14 D).

Female (3 paratypes). Idiosoma, length × width, 530–585 × 195–220, length of hysterosoma 370–410. Prodorsal shield: general form as in male, 130–135 × 144–158, setae se separated by 82–93. Setae cp situated on soft tegument. Humeral shields rudimentary, situated anterior to bases of setae cp. Setae c2 situated dorsally on soft tegument. Setae c3 lanceolate, 28–35 × 7–8.5. Distance between prodorsal and hysteronotal shields 70–95. Anterior and lobar parts of hysteronotal shield dorsally separated by narrow transverse band of soft tegument, but remain connected ventro-laterally by narrow bands ( Fig. 15 A, B). Anterior hysteronotal fragment almost parallel-sided, anterior margin concave, greatest length 265–290, width at anterior margin 137–148, surface of shield with numerous transverse striations in lateral parts and with pair of pale sclerotized patches of ovate form in posterior angles. Length of lobar region 95–105, greatest width 100–108. Median area of lobar shield between anterior margin and terminal cleft with triangular unsclerotized patch almost completely dissecting this shield into two pieces. Supranal concavity indistinct. Terminal cleft as a narrow inverted V, 80–98 long, distance between lobar apices 35–42. Setae h1 on lobar shield, distant from anterior margins. Setae h1 and f2 arranged in a low trapezium. Setae h2 spindle-like, 65–68 × 8–9. Setae ps1 approximately equidistant from inner and outer margin of opisthosomal lobes. Setae h3 minute setiform, 5–6 long, about 1/10 of terminal appendages. Distance between dorsal setae: se:c2 95–110, c2:d2 120–130, d2:e2 115– 126, e2:h2 70–82, h2:h3 50–55, d1:d2 25–32, e1: e2 35–45, h1:h2 28–32, h1:h1 40–47, h2:h2 82–88, h3:h3 60–66.

Epimerites I fused into a narrow U with very thin transverse connection, posterior ends of epimerites I with short and acute lateral extension. Lateral parts of coxal fields I, II without heavy sclerotized areas ( Fig. 15 B). Epimerites IVa absent. Translobar apodemes of opisthosomal lobes present, not fused to each other anterior to terminal cleft. Epigynum horseshoe-shaped, with short lateral extensions. Head of spermatheca poorly sclerotized, primary spermaduct with short enlargement (about 15 long) near head of spermatheca; secondary spermaducts slightly longer than enlargement of primary spermaduct; copulatory opening situated ventrally, slightly posterior to anal opening ( Fig. 14 G). Pseudanal setae ps2, ps3 setiform, setae ps2 noticeably shorter than ps3 and situated at level of posterior end of anal opening; distance between setae: ps2:ps2 40–50, ps3:ps3 25–33, ps2:ps3 22–25.

Three distal segments of legs I, II as in male, femur I without ventral crest; femur II with ventral crest. Solenidion σ 1 of genu I thin stick-like, 18–20 long. Genual setae cG I, II mG I, II setiform. Seta d of tarsus II subequal to corresponding seta f, and seta d of tarsi III, IV shorter than corresponding seta f. Genu IV dorsally inflated, with wide longitudinal dorsal crest, genu III with low longitudinal dorsal crest ( Figs. 14, E, F).

Etymology. The species is named for Dr. Herbert Franzoni Berla, in recognition of his contribution to the study of feather mites in Brazil.