A GUIDELINE FOR THE IDENTIFICATION OF SUBFOSSIL TANYTARSINI (DIPTERA: CHIRONOMIDAE: CHIRONOMINAE) FROM PATAGONIA. This paper presents a key for the identification of nine subfossil morphotypes of the Tribe Tanytarsini (Subfamily Chironominae), described for Argentinean and Chilean Patagonia, from 39° to 54°S. The key is structured based on the head capsules, which is the only material preserved in the sedimentary record. Tribe Tanytarsini is of particular importance as it includes species with high environmental importance, especially climatic. The material collected in Argentinean and Chilean Patagonia allowed the classification of nine morphotypes, distinguished mainly by four easily observables characteristics; (1) the spur shape of the antennal pedestal, (2) presence and shape of post-occipital plate, (3) number of premandible teeth, and (4) mentum and ventromental plates. The main goal of this contribution is to bring together the very sparse and limited knowledge on Tanytarsini from southern South America, in a simple and practical key helping the identification and separation of morphotypes, especially useful for scientists working with fossil chironomids from the Quaternary of Patagonia and other regions of the Southern Hemisphere.
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. 50 • No. 3