AN ANNOTATED PRELIMINARY LIST OF THE CHIRONOMIDAE (DIPTERA) OF ZURQUÍ, COSTA RICA Abstract Introduction Author Epler, John H. 461 Tiger Hammock Road, Crawfordville, Florida, 32327, U. S. A. johnepler3@comcast.net text CHIRONOMUS Journal of Chironomidae Research 2017 2017-04-21 30 30 4 18 https://www.ntnu.no/ojs/index.php/chironomus/article/view/2240 journal article 10.5324/cjcr.v0i30.2240 2387-5372 7987298 Pseudorthocladius - Two specimens of an apparently undescribed species were collected. Until this collection, Pseudorthocladius was not recorded from the Neotropical Region. The Zurquí species appears similar to P. clavatosus Saether & Sublette , but has a smaller inferior volsella. Pseudorthocladius clavatosus was described from two males and a female from South Carolina , U.S.A. ( Saether & Sublette 1983 ); comparison with type material will be necessary to determine if the Zurquí specimens represent a new species.