Trochilodectes brevipenis, Hernandes, Fabio Akashi, 2013

Hernandes, Fabio Akashi, 2013, The feather mites (Acari, Astigmata) of the Violet-capped Woodnymph, Thalurania glaucopis (Gmelin) (Aves, Trochilidae), with descriptions of three new species, Zootaxa 3616 (6), pp. 563-577 : 572-575

Trochilodectes brevipenis sp. n.

Type material. Male holotype, 5 male and 2 female paratypes from Thalurania glaucopis (Gmelin) (Trochilidae) , Reserva "Bicudinho-do-brejo", Guaratuba, Paraná, Brazil, 25º45’23.1"S; 48º43’35.2"W, 11.I.2012, coll. F.A. Hernandes.

Description. MALE [holotype, measurements for 5 paratypes in parentheses]. Idiosoma, length × width, 300 (289–299) × 155 (151–159). Prodorsal shield: postero-lateral margins with subtle extensions, total length of shield along mid-line 95 (86–94), width of posterior part 113 (104–110), surface uniformly punctate; scapular setae se 132 (107–118), those setae separated by 52 (50–54); setae si separated by 35 (31–38) ( Fig. 7 A). Scapular and humeral shields situated dorso-laterally. Setae cp situated ventrally on humeral shields. Setae c2 situated on anterolateral margins of humeral shields. Subhumeral setae c3 lanceolate, 24 (22–24) × 5 (4–5). Hysteronotal shield: greatest length 194 (179–194), width in anterior region 101 (89–97), anterior margin slightly concave, surface uniformly punctate. Distance between prodorsal and hysteronotal shields 13 (17–25). Opisthosomal lobes visible, posterior margin rounded ( Figs. 7 A,B). Supranal concavity present ( Figs. 7 A). Setae h1 situated anterior to supranal concavity. Setae h2 233 (197–217) long, setae h3 as narrow leaves, 48 (34–45) long, those setae separated by 27 (25–32); setae ps2 85 (68–90) long; setae ps1 minute, c.3 long, situated directly anterior to setae h3. Distance between dorsal setae: si:c1 51 (51–55), c1:c2 23 (22–27), c1:d1 44 (33–40), d1:d2 24 (18–24), d2: e1 41 (39–49), e1:h1 48 (44–52).

Epimerites I fused as an inverted V, posterior tips connected to epimerites II ( Fig. 7 B). Coxal field I closed, II open, without large sclerotised areas. Rudimentary sclerite rEpIIa absent. Coxal fields II and III open. Epimerites IVa present, connected to sclerotized areas lateral to genital arch. Length of aedeagus (from anterior bend to apex) 41 (38–42), genital arch 37 (35–42) in width, 10 (9–11) in length. Narrow sclerotizations anterior to setae ps3. Anal suckers 12 (11–13) in diameter, distance between centers of suckers 22 (22–26), corolla without indentations. Distance between ventral setae: 3a:4a 28 (25–30), 4a:g 36 (36–39), g:ps3 39 (37–39), ps3:ps3 36 (36–40).

Femora I and II with narrow ventral crests, other segments without processes. Solenidion σ 1 of genu I longer than solenidion ω 1 of corresponding tarsus, situated at mid-level of segment ( Fig. 8 A). Solenidion σ 1 of genu III 17 (16–18) long. Genual seta cG I and II, and mG I and II, setiform ( Fig. 8 A,B). Solenidia ω 1 of tarsi I and II subequal in length, 8 (8–10) long. Legs III and IV similar in form and size. Solenidion σ 1 of genu III is situated medially on segment. Tarsus IV 38 (37–41) long, setae d and e button-like, seta d situated dorsally in basal third of segment, seta e at apex of segment ( Fig. 8 D).

FEMALE [5 paratypes]. Idiosoma, length × width, 440–444 × 186–203. Prodorsal shield: 117–123 × 146–155, general shape and surface as in the male, setae se 148–179 in length, those setae separated by 71–75, setae si separated by 48–54. Scapular and humeral shields situated dorso-laterally. Setae cp situated ventrally, on humeral shields. Setae c2 situated at anterior end of humeral shields. Setae c3 lanceolate, 28–32 × 5–7. Distance between prodorsal and hysteronotal shields 15–26. Anterior hysteronotal shield roughly rectangular, posterior margin slightly concave, greatest length 222–226, width at anterior margin 127–134, surface uniformly punctate ( Fig. 9 A). Length of lobar region 78–90, greatest width 88–95. Terminal cleft inverted V-shaped, 50–56 long. Setae h1 on lobar shield situated anterior to suparanal concavity. Setae h2 blade, total length 53–60, width at widest part 6–8. Setae ps1 equidistant from h2 and h3. Setae h3 setiform, 26–31. Distance between dorsal setae: si:c1 60–75, c1:c 2 27–42, c1:d1 53–68, d1:d2 39–45, d2: e1 57–61, e1:h1 68–75.

Epimerites I fused as an inverted π, their tips not connected to epimerites II; external margins of epimerites I and both margins of epimerites II with surrounded by sclerotized areas. Coxal fields I, II open ( Fig. 9 B). Epimerites IVa present. Epigynum 66–77 in widest part. Primary spermaduct not enlarged near head of spermatheca, secondary spermaducts short ( Fig. 9 C); copulatory opening situated ventrally, posterior to anal opening. Pseudanal setae ps2 and ps3 setiform, seta ps2 situated at level of posterior end of anal opening; distances between ventral setae: 1a:3a 60–72, 3 a:g 11–15, g:4a 90–100, 4 a:ps3 88–98, ps2:ps2 52–58, ps3:ps 3 17–21.

Femur I without ventral crest, femur II with small ventral crest, other leg segments without crests or processes. Solenidion σ 1 of genu I about twice the length of solenidion ω 1 of corresponding tarsus. Genual seta cG I and II, and mG I and II, setiform. Solenidia ω 1 of tarsi I and II subequal in length.

Differential diagnosis. The new species most closely resembles T. tenuifolia Park & Atyeo, 1974 in having setae h3 lanceolate in males, but can be readily distinguished by the shorter aedeagus reaching only the level of setae g; in T. tenuifolia the aedeagus is much longer, reaching the level of the adanal suckers.

Etymology. The specific epithet refers to the length of male aedeagus, shortest than any known species of the genus, and is a noun in apposition.

Figures

FIGURE 7. Trochilodectes brevipenis sp. n. male: dorsal (A) and ventral (B) views.

FIGURE 8. Trochilodectes brevipenis sp. n. male legs I – IV (A – D).

FIGURE 9. Trochilodectes brevipenis sp. n. female: dorsal (A) and ventral (B) views; spermatheca (C) (pd = primary duct; sd = secondary ducts; hs = head of the spermatheca).