PROC. ENTOMOL. SOC. WASH. 104(4), 2002. pp. 980-992 THE CERACANTHIA COMPLEX (LEPIDOPTERA: PYRALIDAE: PHYCITINAE) IN COSTA RICA. 11. MEGARTHRIA RAGONOT, DRESCOMA DYAR, AND LASCELINA HEINRICH H. H. Neunzig and M. A. Sous (HHN) Department of Entomology, North Carolina State University, Raleigh, NC 27695-7613, U.S.A.; (MAS) Systematic Entomology Laboratory, PSL Agricultural Re-search Service, U.S. Department of Agriculture, % National Museum of Natural History, Smithsonian Institution, Washington, DC 20560-0168, U.S.A. (e-mail: asolis@ sel.barc.usda.gov) Abstract. — The genera Megarthria Ragonot, Drescoma Dyar, and Lascelina Heinrich are redescribed. Amegarthria Neunzig and Dow and Megacerdresa Neunzig are newly synonymized with Megarthria and Lascelina, respectively. One species of Megarthria, two species of Drescoma, and three species of Lascelina are recognized in Costa Rica. Two species are described as new: Lascelina papillina and Lascelina pitilla. Megacer-dresa cordobensis Neunzig is given the new combination Lascelina cordobensis (Neun-zig). Megarthria cervicalis Dyar is a new junior synonym of Megarthria peterseni (Zell-er). Keys are provided for males of Drescoma and Lascelina. Habitus photographs of male adults, line drawings of most male antennae and male genitalia of all species, are included. Also figured are the female genitalia of four of the six species, the forewing and hindwing of Drescoma cyrdipsa, and the costa of the forewing oi Megarthria peterseni. Key Words: Phycitinae. taxonomy. Neotropical This second paper treating the Ceracan-thia complex, a common, mostly Neotrop-ical group within the subfamily Phycitinae in Costa Rica, deals with the genera Me-garthria Ragonot, Drescoma Dyar, and Lascelina Heinrich. In Part I (Neunzig and Solis 2002), we revised Ceracanthia Ra-gonot, the largest genus in the complex. In-formation relative to the contributions of early workers, an overview of the salient diagnostic features of members of the com-plex, and a key to genera can be found in Part I. Specimens studied for Part II came from the following sources: Instituto Na-cional de Biodiversidad, Santo Domingo, Costa Rica (INBio); North Carolina State University Entomology Museum, Raleigh, N. C, U.S.A. (NCSU); National Museum of Natural History, Smithsonian Institution, Washington, D. C, U.S.A. (USNM); The Natural History Museum, London, England (BMNH); and the collection of Vitor O. Becker, Brasilia, Brazil (VOB). Megarthria Ragonot Megarthria Ragonot 1893:156. Type spe-cies: Myelois peterseni Zeller 1881. Orig-inal designation. Amegarthria Neunzig and Dow 1993:42. New synonymy. Type species: Megar-thria cervicalis Dyar 1919, here consid-ered a synonym of Myelois peterseni Zeller 1881. Original designation. Note. — The genus Amegarthria was pro-posed by Neunzig and Dow (1993) because of major differences they found between
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