Rhinoseius cf. antioquiensis Fain & Hyland, 1980,

Dusbabek, Frantisek, Literak, Ivan, Capek, Miroslav & Havlicek, Martin, 2007, Ascid mites (Acari: Mesostigmata: Ascidae) from Costa Rican hummingbirds (Aves: Trochilidae), with description of three new species and a key to the Proctolaelaps belemensis species group, Zootaxa 1484, pp. 51-67: 63

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http://doi.org/ 10.5281/zenodo.176933

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Rhinoseius cf. antioquiensis Fain & Hyland, 1980


Rhinoseius cf. antioquiensis Fain & Hyland, 1980 

( Figs. 19–23View FIGURES 19 – 23)

In five species of Rhinoseius  some dorsal setae in the anterior part of the male opisthonotal shield are strongly modified, thick and spine-like: R. richardsoni Hunter, 1972  , R. panamensis Fain et al., 1977  , R. antioquiensis Fain & Hyland, 1980  , R. rafinskii Micherdzinski & Lukoschus, 1980  and R. nadachowskyi Wiese & Fain, 1993  . While in R. nadachowskyi  and R. rafinskii  these setae are multiple (3 pairs in R. rafinskii  and 5 pairs in R. nadachowskyi  ), in the remaining species only two pairs (J 1 and Z 1) are modified. Naskrecki & Colwell, (1998) synonymized R. panamensis  with R. richardsoni  . They discussed the variability of the male opisthonotal and opisthoventral setae and consider R. panamensis  to be the heteromorphic form of R. panamensis  , in which these setae are setiform. According to these authors, R. richardsoni  differs from R. antioquiensis  mainly by the absence of setae z 1, the thick opisthonotal setae Z 5 and shorter peritreme, extending anteriorly to the level of z 2 or z 4.

Our specimen represents an intermediate form between R. richardsoni  and R. antioquiensis  , having setae Z 5 and S 5 spine-like rather than flageliform, and the peritreme reaching the level of z 2. However, the presence of setae z 1, and short dorsal propodosomal setae lead us to the conclusion that our specimen is assignable to R. antioquiensis  rather than R. richardsoni  . We believe that the differences are those of homo- and heteromorphism common in males of these mites.

Fain & Hyland (1980) collected R. antioquiensis  on the head feathers of the Colombian hummingbirds Chalybura urochrysia  , Androdon aequatorialis Gould, 1863  and Phaethornis guy  . Naskrecki & Colwell (1998) reported this mite also from the plants Cavendishia lindauiana  and C. palustris  ( Ericaceae  ) from Colombia. Our record is the first outside Colombia.

Material examined. One male from Amazilia tzacatl, Barbilla  NP, September 2004, coll. I. Literak.