PROC. ENTOMOL. SOC. WASH. 102(3), 2000, pp. 481-506 NOTES ON THE GENUS CYAMOPS MELANDER (DIPTERA: PERISCELIDIDAE), INCLUDING DESCRIPTION OF TEN NEW SPECIES Alessandra R. p. Baptista and Wayne N. Mathis Department of Entomology, National Museum of Natural History, Smithsonian Insti-tution, Washington, D.C. 20560-0169, U.S.A. (e-mail:
[email protected] and
[email protected]) Abstract. — The species of Cyamops Melander are reviewed for five regional faunas, including the description of 10 new species as follows: C.funkae (Guyana), C. nigeriensis (Nigeria), C. freidbergi (Madagascar), C. micronesicus (Yap), C.fiji (Fiji), C. samoensis (American Samoa), C. femoratus (Philippine Islands), C. laos (Laos), C banvaneue (Laos), C. kaplanae (Thailand). Cyamops pectinatus Khoo is reported from Tasmania. Regional keys are provided for the New World, Afrotropical, Australasian/Oceanian, and Oriental faunas. Key Words: Diptera, Periscelididae, Cyamops, New World, Afrotropical, Australasian/ Oceanian, Oriental, Palearctic The genus Cyamops Melander includes 14 valid species: three in the Nearctic Re-gion, five in the Neotropical Region (Bap-tista and Mathis 1994, 1996), and six in the Australasian Region (Khoo 1985). Since re-vising the New World species of Cyamops (Baptista and Mathis 1994), we (Baptista and Mathis 1996) have described one ad-ditional species, C sabroskyi, from speci-mens collected in Rio de Janeiro, Brazil. When we published our revision of New World species, several new species from lo-calities elsewhere in the world were then known to us, and some of these species had previously been reported (Hennig 1969, Sa-brosky 1980). The purpose of this paper is to describe most of the new species and up-date the existent keys to facilitate identifi-cation of all known species of Cyamops. The new species that we studied and that are not described in this paper are repre-sented by poorly preserved specimens, fre-quently a single male. Methods. — The descriptive terminology, with the exceptions noted in Baptista and Mathis (1994), is that published in the Man-ual of Nearctic Diptera (Mc Alpine 1981). As we recently published a complete de-scription for the genus Cyamops, the ge-neric characters are not repeated here. The format for species' description likewise ad-heres to Baptista and Mathis (1994), with the following modifications: Facial shape: In addition to being sexu-ally dimorphic, two basic facial shapes oc-cur among males of Cyamops: 1 . Face con-stricted medially by the anteroventral mar-gin of the eyes, expanding into a triangular region ventrally below the level of the pseu-dovibrissae and bearing a median ridge that was called the "facial carina" in our first paper. The corresponding female face is trapezoidal below the level of the pseudov-ibrissa, with a central, large, more elevated area. 2. Face not constricted medially, with-out a median ridge. The corresponding fe-
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