PROC. ENTOMOL. SOC. WASH. 98(3), 1996, pp. 450-464 NEW MOTH FLIES (DIPTERA: PSYCHODIDAE) AND A KEY TO SPECIES FROM PUERTO RICO R. Wagner and E. C. Masteller (RW) Limnologische FluBstation Schlitz, des Max-Planck-Instituts fiir Limnologies, P.O. Box 260, 36105, Schlitz, Germany; (ECM) The Pennsylvania State University at Erie, The Behrend College, Station Road, Erie, PA 16563, U.S.A. Abstract. — Collections of aquatic insects emerging from tropical rainforest mountain streams in Puerto Rico provided the following new species of Psychodidae (Diptera) which are described, figured, and compared with other Caribbean taxa: Trichomyia flinti, T. sattelmairi, T. buchholzi, Arisemus buzbyae, A. mariannae, A. waidei, Philosepedon mauroae, Psychoda puertoricana, and Psychoda juliae . The period of emergence is in-dicated for six of these new species along with the flight period of Maruina hirta (Jo-hannsen), and Quatiella interdicta (Quate). A key to the identification of these eleven species is included. Key Words: Diptera, Psychodidae, new species, identification key, Puerto Rico, streams The psychodids, often referred to as moth flies or sand flies (= Phlebotominae) are poorly known from the Caribbean area even though numerous papers exist (Vaillant and Botosaneanu (1970), Duckhouse (1974a, b), Johannsen (1938), Quate (1959), Satch-ell, (1955) and Wagner (1983, 1993). Long-term investigations in the tropics using emergence trap to collect adult aquatic in-sects are almost non-existent. In 1991-92 collections were made periodically on a weekly basis over almost 24 months (Wag-ner and Masteller 1993). They found only one out of eight species collected had been described. In this paper, nine new species from the El Verde and Bisley sites in Puerto Rico are described, along with detailed in-formation on the flight period of the two known species from Puerto Rico, Maruina hirta (Johannsen) and Quatiella interdicta (Quate), (Quate 1955, Hogue 1973, Vaiflant 1963, 1973, 1983, Wagner and Masteller, 1993). The site and methods of collection were described in Masteller and Buzby (1993) for collections from Quebrada Prieta locat-ed at 390 m elevation at 18°N latitude with an average precipitation of 368 cm per year and stream temperatures ranging from 19° to 24°C. Shrimp are common in the streams; Atya lanipes Holthuis the prelevant species. The Quebrada Bisley site is de-scribed in Masteller and Flint (1993) and Scatena (1989). The Bisley site was at 270 m with a higher algal biomass and fewer shrimp than Q. Prieta, otherwise the two sites were similar. Predominant insects in Q. Prieta were mayflies and caddisflies. The psychodids accounted for less than 2% of the Diptera collected. Ceratopogonidae and Chironom-idae accounted for 49% and 35% respec-tively. Methods of preservation and prepa-ration were as described in Wagner (1993). Types and paratypes have been deposited at the Smithsonian Institution, National Museum of Natural History, Washington, D.C., the Puerto Rico Natural History Mu-
BioStor
