Atrichophyllodes leucopterus, Hernandes, 2013

Hernandes, Fabio Akashi, 2013, Three new proctophyllodine feather mites (Acari: Proctophyllodidae) from passerines in Brazil (Aves: Passeriformes), Journal of Natural History (J. Nat. Hist.) 48 (3 - 4), pp. 185-202 : 196-200

Atrichophyllodes leucopterus sp. nov.

Type host

Pyriglena leucoptera (Vieillot, 1818) (Thamnophilidae) , the white-shouldered fire-eye.

Type locality

Arujá, São Paulo, Brazil.

Type material

Male holotype ex Pyriglena leucoptera, Arujá , 23 ◦ 22 ′ 19 ′′ S, 46 ◦ 22 ′ 01 ′′ W, São Paulo, Brazil, 24 June 2011, col. A.M. Montanhini. Paratypes: 3 males and 13 females, same data as the holotype; 3 males and 3 females from P. leucoptera, Parque Estadual Carlos Botelho , 24 ◦ 05 ′ S, 47 ◦ 59 ′ W, São Paulo, Brazil, 07 July 1979, Y. Oniki and E.O. Willis colls. Holotype male, 5 male and 10 female paratypes at DZUnesp-RC; one male and female paratype in each of BMOC , and ZISP.

Diagnosis

Atrichophyllodes leucopterus sp. nov. most closely resembles A. delalandi Hernandes et al., 2007 by having in males the rudimentary sclerite rEpIIa present, genital acetabula inserted on small plates anterior to genital arch, setae ps3 inserted off adanal shields; it can be readily distinguished from the latter species by the shape of adanal shields, bearing two thin anterior projections (those projections absent in A. delalandi ), relatively shorter aedeagus, about the same length as genital arch (about twice that length in A. delalandi ); in females the genital arch (epigynium) resembles a low arch, which in A. delalandi is round and horseshoe-shaped; also the lobes are much more spaced in the new species, i.e. the terminal cleft is an open U-shape, while in A. delalandi it forms a narrow, long U, with their inner margins almost touching each other.

Male ( Figures 8 , 9A–D ) (holotype, measurements for three paratypes in parentheses). Idiosoma, length × width, 339 (324–336) × 186 (175–178). Prodorsal shield: posterior margin straight, surface uniformly punctuate, setae ve present, represented by microsetae, total length of shield along midline 97 (92–95), width 124 (122–127); scapular setae se 126 (108–110) in length, those setae separated by 77 (77–80), setae si separated by 59 (57–61) ( Figure 8A ). Setae cp situated ventrally on humeral shield. Setae c2 situated dorsally on humeral shield. Subhumeral setae c3 lanceolate, 18 (17–18) × 4 (4–5). Hysteronotal shield: greatest length 209 (206–209), width in anterior region 130 (127–133), anterior margin slightly concave, surface with small pit-like lacunae mainly on medial area of shield. Distance between prodorsal and hysteronotal shields 23 (13–21). Opisthosomal lobes short, posterior margins rounded, lamellae rounded, 13 (12–15). Supranal concavity present ( Figure 8A ). Setae h1 situated at anterior level of supranal concavity. Setae h3 setiform, 86 (78–98) long; setae ps2 25 (23–32) long; setae h2 183 (163–182) long; setae ps1 minute, c.5 long, situated at internal margins of lobes, at the same level of setae h3. Distance between dorsal setae: si: c1 67 (59–67), c1: c2 63 (57–65), c1: d1 39 (37–40), e1: h1 41 (39–46), h1: h1 61 (56–61), h3: h3 63 (66–70).

Epimerites I free, parallel ( Figure 8B ), epimerites II with surrounding sclerotized areas. Rudimentary sclerite rEpIIa present. Coxal fields I–IV open. Epimerites IVa absent. Aedeagus length (from anterior bend to apex) 21 (20–22), genital arch width 58 (50–53). Genital shields absent, adanal sclerites present between setae ps3 and anal suckers, anterior ends of these shields with narrow projections directed to tips of genital arch. Anterior ends of opisthoventral shields with oblique projections directed to genital arch. Anal suckers 18 (17–18) in diameter, corolla with indentations, distance between centres of discs 29 (26–29). Setae ps3 14 (11–16) long. Distance between ventral setae: 3a: 4a 23 (25), 4a: g 46 (44–50), g: ps3 26 (26), ps3: ps3 17 (15–16).

Femora I with narrow ventral crests, other segments without processes. Solenidion σ 1 of genu I about the same length as solenidion ω3 of corresponding tarsus, situated at midlevel of segment. Genual seta cG I and II, and mG I and II, setiform ( Figure 9A, B ). Solenidia ω1 of tarsi I and II subequal in length. Legs III and IV similar in form and size. Tarsus IV 34 (31–32) long; setae d and e button-like ( Figure 9D ).

Female ( Figures 9E , 10 ) (range of seven paratypes). Idiosoma, length × width, 452–471 × 209–245. Prodorsal shield: 109–118 × 155–169, surface uniformly punctate, anterolateral extensions acute, posterior margin straight, setae ve present, represented by microsetae; scapular setae se 109–129 long, those setae separated by 100–107, si separated by 77–81. Setae cp situated ventrally on humeral shield. Setae c2 situated dorsally on humeral shield. Setae c3 lanceolate, 19–22 × 4–6. Distance between prodorsal and hysteronotal shields 16–32. Anterior hysteronotal shield, greatest length 230–235, width at anterior margin 167–177, anterior margin slightly concave, posterior margin with a pair of concavities, surface with scattered lacunae medially between setae d1 to level of tibiae IV ( Figure 10A ). Pair of barely discernible oval pale patches at level of tibiae IV. Length of lobar region 101–109, greatest width 104–118. Terminal cleft inverted U-shaped, 64–71 long, 23–41 wide at posterior margins. Setae h1 on area of striated tegument between anterior hysteronotal and lobar shields. Setae h2 bladelike with terminal filament, total length 86–113, width of enlarged part 6–8. Setae ps1 inserted in internal margins of lobes, slightly closer to bases of h3 than to h2. Setae h3 setiform, 61–80 long. Distance between dorsal setae: si: c1 69–88, c1: c2 72–86, c1: d1 49–57, d1: e1 86–89, e1: h1 68–75, h1: h1 32–36, h3: h3 47–71.

Epimerites I free. Coxal fields I–II with narrow sclerotized areas ( Figure 10B ). Epimerites IVa present. Epigynum arch-like, greatest width 90–101, length 49–56. Spermatheca as in Figure 9E ; copulatory opening situated terminally at the terminal cleft. Pseudanal setae ps2 and ps3 setiform, seta ps2 situated at midlevel of anal opening; distances of ventral setae: 1a: 3a 59–70, 3a: g 26–29, g: 4a 73–82, 4a: ps3 85–95, ps2: ps3 16–22, ps2: ps2 51–57, ps3: ps3 20–24.

Three distal segments of legs I and II as in male; femur I without ventral crest, femur II with small ventral crest. Solenidion σ 1 of genu I about the same length as solenidion ω3 of corresponding tarsus. Genual seta cG I and II, and mG I and II, setiform. Solenidia ω1 of tarsi I and II subequal in length.

Etymology

The specific epithet is taken from that of the type host, and is treated as an adjective in the nominative singular.

Remarks

Another proctophyllodid was recently described from this host, Nanopterodectes leucopterus Hernandes and Valim (2012) , from the subfamily Pterodectinae .

Figures

Figure 8. Atrichophyllodes leucopterus sp. nov., male: dorsal (A) and ventral (B) views.

Figure 9. Atrichophyllodes leucopterus sp. nov. (A–D) Male legs I–IV; (E) female spermatheca.

Figure 10. Atrichophyllodes leucopterus sp. nov., female: dorsal (A) and ventral (B) views.