Metapterodectes Mironov, 2008

Mironov, Sergey & González-Acuña, Daniel, 2011, New feather mites of the subfamily Pterodectinae (Acariformes: Proctophyllodidae) from passerines (Aves: Passeriformes) from Chile and Cuba, Zootaxa 3057, pp. 1-48 : 42-43

publication ID 10.11646/zootaxa.3057.1.1


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Metapterodectes Mironov, 2008


Genus Metapterodectes Mironov, 2008  

Type species: Metapterodectes furnarius Mironov, 2008   by original designation.

Diagnosis. BOTH SEXES. Vertical setae ve absent. All hysterosomal setae present. Prodorsal shield covering most part of prodorsum, with well developed posterior angles. Scapular shields narrow. Humeral shields absent or represented by minute rudimentary sclerites on ventral surface near setae cp. Setae c 2 situated dorso-laterally on striated tegument. Setae wa anterior to setae la and ra on tarsi I, II. Seta gT of tibia I in distal half of segment. Setae cG and mG on genua I, II setiform. Solenidion σ 1 of genu I much shorter than solenidion ω 3 of corresponding tarsus. Femora I, II usually bear ventral crests, other segments of these legs without processes and other modifications. Seta sR of trochanters III absent; solenidion σ 1 of genu III absent. Supranal concavity usually distinct.

MALE. Epimerites I fused into a narrow U, fused part not connected with epimerites II. Coxal fields II – IV open; epimerites II and IV without extensive sclerotized areas. Opisthosomal lobes moderately elongated, approximately as long as wide, with roughly rounded posterior margin. Terminal cleft as a wide inverted U. Setae h 3 short, narrowly lanceolate or spiculiform, situated on lobar apices. Setae h 1 situated anterior to bases of opisthosomal lobes. Setae ps 1 setiform, minute. Genital arch with well developed branches, situated at level of trochanters IV; aedeagus sword-shaped, much (2.5 or more times) longer than genital arch. Genital papillae anterior to genital arch. Pregenital apodeme, paragenital apodemes, genital shield and other sclerotized structures around genital apparatus absent. Setae 4 a situated on soft tegument of coxal fields IV. Opisthoventral shields present, relatively wide. Corolla of anal suckers without indentations; suckers surrounded by membrane with radial striation. Adanal shields absent. Setae ps 3 postero-lateral or lateral to anal suckers, situated on opisthoventral shields. Setae g and ps 3 in high trapezoid arrangement. Legs I slightly thicker and longer than legs II. Legs III and IV subequal in size. Solenidia φ of legs III, IV subequal. Tarsus IV without apical claw-like process, setae d and e button-like.

FEMALE. Epimerites I fused into a narrow U. Lobar region of opisthosoma clearly separated from remaining part of opisthosoma; opisthosomal lobes well developed, with long terminal appendages. Hysteronotal shield completely split into anterior and lobar shields. Macrosetae h 2 with spindle-like basal part and filiform apical part. Epigynum horseshoe-shaped, large. Apodemes of oviporus separated from epimerites IIIa. Translobar apodemes present. Setae ps 2, ps 3 sucker-like or filiform (in M. leptasthenurae   ), arranged in transverse rectangle or low trapezium, both pair situated at level of anal opening. Legs I slightly thicker and longer than legs II. Legs III, IV subequal in size; genu IV dorsally inflated. Solenidia φ of tibiae III much longer than on tibiae IV.

Remark. Up to now, the genus Metapterodectes   included only two species ( Mironov et al. 2008; Valim & Hernandes 2008). This genus clearly differs from the genera Amerodectes   and Tyrannidectes, the two closest genera of the Pterodectes   complex, by the simultaneous absence of solenidion σ 1 and seta sR on legs III ( Fig. 23 View FIGURE 23 H). Metapterodectes furnarius Mironov, 2008   and the new species described below are associated with ovenbirds (Tyrannida: Furnariidae   ); and M. muticus ( Banks, 1909)   was described from the Vesper Sparrow Pooecetes gramineus (Gmelin)   (Passerida: Emberizidae   ).

Redescriptions of previously known Metapterodectes   species are given in the papers by Mironov et al. (2008 b) and Valim and Hernandes (2008, 2010).