Abstract
Abstract Two new species Dromiciocoptes marmosops sp. n. and Dromiciocoptes caenolestes sp. n., of the subfamily Dromiciocoptinae (Acari: Myocoptidae), are described from Marmosops parvidens Tate (Didelphimorphia: Didelphidae) from Peru and Caenolestes fuliginosus (Tomes) (Pauctituberculata: Caenolestidae) from Ecuador, respectively. Dromiciocoptes has been included in a monobasic subfamily in the Myocoptidae on the basis of female and nymph legs III and IV of being modified for clasping the hair of the host. Observations on the actual structure of these appendages, however, indicate that the mode of hair clasping is fundamentally different than in other myocoptids. The structure of the male legs IV of Dromiciocoptinae and Myocoptinae are also different. Additional diagnostic characters of the subfamily Dromiciocoptinae in both sexes are the enlarged propodonotal and hysteronotal shields; indistinct openings of the opisthonotal glands; reduced pretarsi II; retrorse spurs on coxal fields I–IV; absence of s...
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