The genus Dromiciops Thomas is the only living representative of the order Microbiotheria. Throughout the history of the taxon, it was considered to comprise a continental and an insular form (D. australis and D. gliroides), a single species (D. gliroides), or, as recently described, 3 different species (D. bozinovici, D. mondaca, and D. gliroides). I analyzed the morphometric and morphologic variability (differences in morphological characters within a sample or species) and variation (differences in morphological characters among samples or species) in Dromiciops. Comparisons to test for secondary sexual dimorphism were made within and between continental and insular samples for localities with the largest samples available. Due to the lack of sexual dimorphism, males and females were analyzed together to test for: 1) differences between continental and insular samples; 2) differences between the arrangement of recently described species using a larger series of available specimens; and 3) clinal variation. Results support Dromiciops as composed of 1 valid species (D. gliroides), without clinal variation. Based on the samples I examined, several characters previously used as diagnostic for the 3 species previously recognized (e.g., incisive and palatal fenestrae, mandibular height) vary intraspecifically and are not valid as diagnostic.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 99 • No. 1