Atrichophyllodes Valim, Hernandes and Mironov, 2007

Mironov, Sergey V., Literak, Ivan, Sychra, Oldrich & Capek, Miroslav, 2017, Feather mites of the subfamily Proctophyllodinae (Acari: Proctophyllodidae) from passerines (Aves: Passeriformes) in Costa Rica, Zootaxa 4297 (1), pp. 1-105 : 75-76

Genus Atrichophyllodes Valim, Hernandes and Mironov, 2007

Type species: Atrichophyllodes delalandi Hernandes, Valim and Mironov, 2007 , by original designation.

Diagnosis. BOTH SEXES. Moderately elongated proctophyllodines. Prodorsal shield covering nearly the entire prodorsum, with antero-lateral extensions, and rounded posterior angles. Vertical setae vi rudimentary, represented by alveoli. Scapular setae si and se situated on prodorsal shield and arranged in transverse line. Humeral shields well-developed dorsally, encompassing bases of setae c2 and cp. Subhumeral setae c3 lanceolate. Epimerites I free, bow-shaped, with posterior ends slightly divergent. Hysteronotal setae d2 and e2 absent. Solenidion σ1 of genu I slightly longer than solenidion ω3 of tarsus I. Tarsi I, II with 3 ventral setae, setae wa anterior to setae la and ra on these tarsi. Segments of legs I and II without processes or other modifications.

MALE. Hysteronotal shield covering almost all hysterosoma. Opisthosoma wide, opisthosomal lobes short and wide; posterior margin of lobes with semicircular terminal lamellae, striated or punctated dorsally. Supranal concavity well expressed. Setae h3 shorter than macrosetae h2. Setae h1 anterior to the level of setae ps2. Coxal fields I–IV open, without extensive sclerotized areas. Genital organ at level of trochanters IV; genital arch wide and low, aedeagus in sheath approximately twice as long as genital arch. Adanal shields present, variable in form, situated between adanal suckers and setae ps3, connected each other anterior to anal opening or free. Genital papillae situated at level of genital arch apex, surrounded by ovate plates or these plates absent. Pregenital and paragenital apodemes absent. Adanal apodemes present or absent. Opisthoventral shields poorly developed. Adanal suckers cylindrical, corolla dentate. Legs III and IV subequal, not hypertrophied. Tarsus IV without apical claw-like process, with or without ventral extension, modified setae d and e button-like.

FEMALE. Lobar region of opisthosoma clearly separated from remaining part of hysterosoma, opisthosomal lobes well developed, with terminal appendages. Anterior hysteronotal and lobar shields separated by narrow band of striated tegument. Lobar shield entire or split longitudinally. Supranal concavity absent. Macrosetae h2 thickened basally, with filiform apex. Epigynum large, semicircular or horseshoe-shaped. Translobar apodemes present, fused with each other anterior to terminal cleft or free. Copulatory opening terminal or subterminal. Legs III and IV subequal in size; segments without modifications; solenidia φ of tibiae III and IV subequal or solenidion φ IV noticeably shorter.

Hosts. Thamnophilidae , Tyrannidae .

Remark. The genus Atrichophyllodes is close to Nycteridocaulus , in particular, by the form of the opisthosomal lobes, the terminal lamellae and the shape of the genital apparatus in males. It is readily differentiated from that genus by the lack of lateral idiosomal setae d2 and e 2 in both sexes. The genus previously included three species ( Hernandes et al. 2007; Hernandes 2014). One new species is described herein.