Picobia myiopagi, Glowska, Eliza & Milensky, Christopher M., 2014

Glowska, Eliza & Milensky, Christopher M., 2014, New species of the genus Picobia (Cheyletoidea: Syringophilidae) parasitizing tyrannid birds (Passeriformes: Tyrannidae), Zootaxa 3821 (3), pp. 373-383: 378-382

publication ID

http://dx.doi.org/10.11646/zootaxa.3821.3.6

publication LSID

lsid:zoobank.org:pub:E3F86DF9-B80E-43AE-B816-AAC7B787FD0F

DOI

http://doi.org/10.5281/zenodo.3504289

persistent identifier

http://treatment.plazi.org/id/C42B87E2-FF87-FFD7-FF0D-F9B19C5EF955

treatment provided by

Plazi

scientific name

Picobia myiopagi
status

sp. nov.

Picobia myiopagi  sp. nov.

( Figs. 13 –16View FIGURES 13 – 16, 20View FIGURES 17 – 20, 24View FIGURES 21 – 24)

PHYSOGASTRIC FEMALE (holotype). Total body length 755 (665–715 in 6 paratypes). Gnathosoma  . Hypostomal apex tapering ( Fig. 15View FIGURES 13 – 16). Infracapitulum punctate. Each medial branch of peritremes with ca. 7 chambers, borders between chambers in lateral branches invisible. Stylophore rounded posteriorly, 150 (145) long, punctate in anterior part. Idiosoma  . Propodonotal shield represented by 2 narrow sclerites bearing bases of setae ve and si, punctate. Setae ve bases situated anterior to vi. Length ratio of setae vi: ve: si 1: 1.2–2: 6–12. Bases of setae c 1 and se situated at same transverse level. Hysteronotal shield absent. Setae d 1 bases situated closer to setae d 2 than e 2 bases. Length ratio of setae d 1: d 2: e 2 1.4 –1.6: 1.6–1.7: 1. Pygidial shield strongly sclerotized, double-leaf, covered with pygidial lobes provided with spike-shaped outgrowth, densely punctate. Bases of setae f 1 beneath lobes, f 2 situated beyond lobes ( Figs. 20View FIGURES 17 – 20, 24View FIGURES 21 – 24). Lengths ratios of setae f 1: f 2 1: 1.2–1.9, h 1: h 2 1: 8.8, f 1: h 1 1.5–1.7: 1, f 2: h 2 1: 3.8. Aggenital setae ag 1 situated anterior to ag 2, ag 2 anterior to ag 3. Length ratio of ag 1: ag 2: ag 3 1.4: 1: 1.8–2.4. Pseudanal setae ps 1: ps 2 subequal in length or ps 2 1.5 times longer than ps 1. Setae g filiform, situated on triangular outgrowths of genital lobes. Legs. All coxal fields strongly sclerotized, punctate. Setae 3 c 1.9 times longer than 3 b. Antaxial and paraxial members of claws pair III and IV unequal in size and shape. Setae tc” III –IV 1.2 times longer than tc’. Lengths of setae: vi 25 (15–20), ve 30 (25–35), si 150 (145–180), c 2 180 (160–180), se 160 (170–185), c 1 155 (165–190), d 2 170 (160–170), d 1 160 (145–160), e 2 100 (95–100), f 1 50 (35–45), f 2 60 (65–80), h 1 30 (30), h 2 (265), ag 1 80 (65–70), ag 2 55 (55–70), ag 3 115 (115–150), g 1 55 (55–65), ps 1 20 (20), ps 2 20 (20–30), tc’ 60, tc” 70, lR’III 30, lR’IV 25, 3b 35, 3c 65, 4c 90.

MALE: Unknown.

Type material. Female holotype and 6 female paratypes (physogastric forms) from quills of body feathers of Myiopagis gaimardii (Orbigny)  ( USNM 637120) ( Passeriformes  : Tyrannidae  ), GUYANA: Upper Takutu - Upper Essequibo, Upper Rewa River, 12 August 2006, coll. C. M. Milensky (mites sampled by E. Glowska).

Additional material. Four females (physogastric forms) from Elaenia ruficeps Pelzeln  ( USNM 639133), GUYANA, Cuyuni-Mazaruni, Paruima, ca. 19 km N, at Mt. Holitipu, 16 February 2007, coll. C. M. Milensky and 6 females (physogastric forms) from quills of body feathers of Myiopagis subplacens (Sclater)  ( USNM 643882) ( Passeriformes  : Tyrannidae  ), PERU: Tumbes, El Caucho Biological Station, 10 June 2009, coll. B. K. Schmidt (mites sampled by E. Glowska).

Material deposition. Holotype female and 3 female paratypes, 2 females from Elaenia ruficeps  and 3 females from Myiopagis subplacens  are deposited in the USNM, 3 female paratypes, 2 females from E. ruficeps  and 3 females from M. subplacens  in the AMU.

Etymology. The specific epithet derives from the generic name of the host.

Differential diagnosis. Picobia myiopagi  sp. nov. is most similar to P. sayornis Glowska, 2014  described from the Black Phoebe Sayornis  nigricans (Swainson) ( Passeriformes  : Tyrannidae  ) from Peru (Glowska 2014). In females of both species the propodonotal shield is represented by two punctate, saber-like lateral sclerites, bearing bases of setae ve and si, the peritremes median branches are with ca. 7 chambers and borders between chambers in the lateral branches are invisible, the hysteronotal shield is absent, the pygidial shield is double-leaf and covered by lobes, agenital setae ag 1 are situated anterior to ag 2 and ag 2 anterior to ag 3, the genital setae are filiform and situated on the genital lobes and the antaxial and paraxial members of claw pairs III –IV are unequal. Picobia myiopagi  sp. nov. is distinguishable from P. sayornis  by the shape of the pygidial lobes provided with a large strongly sclerotized spike-shaped outgrowth ( Figs. 20View FIGURES 17 – 20, 24View FIGURES 21 – 24) and by the length of setae vi 15–25, ve 25–35, d 1 145–160, d 2 160–170, e 2 95 –100, f 1 35–50, f 2 60–80, ag 1 65–80. Females of P. sayornis  have the pygidial lobes with 2–4 small, blunt-ended protuberances ( Figs. 17View FIGURES 17 – 20, 21View FIGURES 21 – 24) and the length of setae are vi 30–35, ve 40–45, d 1 185–195, d 2 180–190, e 2 130–135, f 1 65, f 2 105, ag 1 100.

USNM

Smithsonian Institution, National Museum of Natural History