Trouessartia savanae , Hernandes, Fabio Akashi, 2014

Hernandes, Fabio Akashi, 2014, Five new species of the feather mite genus Trouessartia Canestrini from South America (Acari: Trouessartiidae), Zootaxa 3856 (1), pp. -1--1: -1

publication ID

http://dx.doi.org/10.11646/zootaxa.3856.1.2

publication LSID

lsid:zoobank.org:pub:F2E274C7-A445-42F0-A8C0-34EB2157370F

persistent identifier

http://treatment.plazi.org/id/03D18799-F979-FFB2-FF48-FA0EFBE4F83A

treatment provided by

Plazi

scientific name

Trouessartia savanae
status

sp. nov.

Trouessartia savanae  sp. nov.

( Figs. 10–12View FIGURE 10View FIGURE 11View FIGURE 12)

Type-host: Tyrannus savana Vieillot, 1808  ( Passeriformes  , Tyrannidae  ), Fork-tailed Flycatcher.

Type-locality: Brasília, Distrito Federal, Brazil.

Material examined. Male holotype, 5 male and 9 female paratypes ex Tyrannus savana  , BRAZIL: Distrito Federal, Brasília, Parque Alvorada, 15 ° 47 'S, 47 ° 50 'W, November 2012, coll. A. E. Jahn; 6 males and 10 females ex T. savana  , ARGENTINA: Parque Luro, Província La Pampa, 35 °08'S, 57 ° 23 'W, 15 December, 2013, coll. A. E. Jahn; 1 male and 4 females ex T. savana  , ARGENTINA: Reserva privada El Destino, Província Buenos Aires, 18 December, 2013, coll. A. E. Jahn. Type specimen deposition: holotype and most paratypes at DZUnesp-RC; 1 male and 1 female paratypes at each UMMZAbout UMMZ, ZISPAbout ZISP.

Etymology. The epithet is taken from the specific name of the type host, and is a noun in the genitive case.

Description. Male (holotype, range for 5 paratypes in parentheses). Length of idiosoma from anterior end to bases of setae h 3 465 (439–506), greatest width of idiosoma at level of humeral shields 229 (199–254). Length of hysterosoma from sejugal furrow to bases of setae h 3 310 (304–342). Prodorsal shield: length along midline 140 (133–154), greatest width of posterior part 147 (149–165), anterior part at level of trochanters II not narrowed, antero-lateral extensions not extending to bases of epimerites Ia between legs I and II, lateral margins not fused with scapular shields, posterior margin almost straight, surface without ornamentation ( Fig. 10View FIGURE 10 A). Vertical setae ve represented only by alveoli. Internal scapular setae si thin needle-like, 22 (25–31) long, separated by 54 (55–61); external scapular setae se 144 (153–169) long, separated by 96 (98–122). Humeral shield with setae c 2 needle-like, 44 (33–58) long. Setae c 3 narrowly lanceolate, acute apically, 25 (22–30) long. Dorsal hysterosoma with broadly connected prohysteronotal shield and lobar shield. Prohysteronotal shield: length 193 (199–218), widest part near anterior margin 154 (154–176), lateral margins without incisions at level of trochanters III, dorsal hysterosomal apertures (DHA) absent, central area with faint circular lacunae. Dorsal setae d 1 present, minute, d 2 absent. Length of lobar shield excluding lamellae 90 (87–105). Apical parts of opisthosomal lobes touching each other, separated by narrow parallel-sided terminal cleft, length of cleft from anterior end to apices of lamellae 41 (39–50), width in anterior part 4 (3–5). Lamellae nearly rectangular, margins smooth, length from bases of setae h 3 to lamellar apices 23 (21–30). Seta h 2 281 (236–302) long, seta h 3 176 (150–177) long. Distance between dorsal setae: c 2: d 2 103 (104–128), d 2: e 2 97 (82–95), e 2: h 2 77 (70–93), h 2: h 3 22 (20–25), h 2: h 2 42 (39–44), h 3: h 3 29 (29–32), d 1: d 2 57 (53–70), e 1: e 2 44 (39–58).

Epimerites I free. Rudimentary sclerites rEpIIa small. Genital apparatus situated between levels of trochanters III and IV, length excluding basal sclerite 55 (52–59), greatest width 28 (26–31) ( Fig. 10View FIGURE 10 B). Epiandrum present, large and roughly square-shaped. Anterior and posterior pairs of genital papillae approximate. Setae g short, filiform, alveoli contiguous. Postgenital plaque absent. Adanal apodemes heavily sclerotized, without rounded apophyses. Translobar apodeme present. Adanal shields small, triangular, bearing setae ps 3. Anal suckers 17 (16–19) in diameter, distance between centers of discs 28 (30–33). Epimerites IVa long, anterior ends reaching level of setae g. Setae 4 b situated slightly anterior to level of setae 3 a, setae g situated posterior to setae 4 a. Distance between ventral setae 4 b: 3a 38 (36–47), 4 b: g 96 (94–110), g: ps 3 50 (45–52), ps 3: ps 2 64 (64–70).

Legs IV extending by ambulacral disc slightly beyond level of setae h 3. Setae sR of trochanters III short, narrowly lanceolate, acute apically, 19 (17–21) long. Modified setae d of tarsus IV barrel-shaped, with discoid cap, situated at distal half of segment; modified setae e hemispheroid, without cap, situated apically ( Fig. 12View FIGURE 12 D). Length of solenidia: σ 1 of genu I 49 (46–55), σ of genu II 14 (10–15), σ of genu III 23 (21–25), ϕ of tibia I 76 (78–83), ϕ of tibia II 87 (80–90), ϕ of tibia III 67 (61–71), ϕ of tibia IV 38 (39–43), ω 1 of tarsus I 19 (21–24), ω 3 of tarsus I 32 (29–38), ω 1 of tarsus II 22 (21–25).

Female (range for 5 paratypes). Length of idiosoma from anterior end to apices of lamellar lobar processes 540–561, greatest width 214–248. Length of hysterosoma from sejugal furrow to apices of lamellar lobar processes 375–404. Prodorsal shield: shaped as in male, 142–160 in length, 160–169 in width, surface without ornamentation ( Fig. 11View FIGURE 11 A). Vertical setae ve represented only by alveoli. Setae si thin needle-like, 27–33 long, separated by 58–61; setae se 139–177 long, separated by 103–111. Humeral shields with setae c 2 needle-like, 43–50 long. Setae c 3 narrowly lanceolate, acute apically, 22–26 in length. Hysteronotal shield: length from anterior margin to bases of setae h 3 327–351, width at largest part near anterior margin 162–175, lateral margins without incisions at level of trochanters III, DHA absent, anterior part with faint circular lacunae, posterior part with small circular and ovate lacunae. Dorsal setae d 1 present, d 2 absent. Setae h 1 short spiculiform, 16–19 long, situated antero-mesal to bases of setae h2, 25– 28 from each lateral margin of hysteronotal shield. Width of opisthosoma at level of setae h 2 106–121. Setae ps 1 positioned dorsally on opisthosomal lobes, equidistant from outer and inner margins of lobe, closer to bases of h 3 than to h 2. Distance from bases of setae h 3 to membranous apices of lobes 34–41. Setae f 2 absent. Supranal concavity open posteriorly into terminal cleft. Length of terminal cleft together with supranal concavity 143–156, width of cleft at level of setae h 3 34–49. Interlobar membrane small. External copulatory tube present, protruding from dorsal surface of interlobar membrane, small finger-like, 17–20 long. Spermatheca as in Fig. 12View FIGURE 12 I. Distance between dorsal setae: c 2: d 2 119–123, d 2: e 2 88 –106, e 2: h 2 40–47, h 2: h 3 70–79, h 2: h 2 86–98, h 3: h 3 64–77, d 1: d 2 62–64, e 1: e 2 78 –81, h 1: h 2 25–29, h 1: h 1 48–53, ps 1: h 3 18: 21.

Epimerites I free. Epigynum 52–55 in length, 82–102 in width ( Fig. 11View FIGURE 11 B). Epimerites IVa present, thin. Anal opening with pair of small ovate sclerites situated at level of its anterior end. Setae sR of trochanters III narrowly lanceolate, acute apically, 16–20 long. Legs IV extending by ambulacral disc to level of setae ps 1. Length of solenidia: σ 1 of genu I 48 –61, σ of genu II 16–19, σ of genu III 25–30, ϕ of tibia I 82 –92, ϕ of tibia II 83 –96, ϕ of tibia III 63 –66, ϕ of tibia IV 28–34, ω 1 of tarsus I 22–25, ω 3 of tarsus I 30–39, ω 1 of tarsus II 20–26.

Differential diagnosis. Trouessartia savanae  sp. nov. resembles T. secaticauda Gaud  by having, in males, lobar lamellae terminating abruptly, truncate. It can be distinguished from the latter species by having epiandrium roughly square-shaped in males, and in females the external copulatory tube present. In males of T. secaticauda  , the epiandrium is bow-shaped, and in females the external copulatory tube is absent.

UMMZ

University of Michigan, Museum of Zoology

ZISP

Zoological Institute, Russian Academy of Sciences