PROC. ENTOMOL. SOC. WASH. 109(2), 2007, pp. 265-276 A NEW GALL-INDUCING TORTRICID (LEPIDOPTERA: TORTRICIDAE: OLETHREUTINAE) ON LIMA BEAN {PHASEOLUS LUNATUS; FABACEAE) FROM COSTA RICA John W. Brown and Kenji Nishida (JWB) Systematic Entomology Laboratory, PSI, Agricultural Research Service, U.S. Department of Agriculture, c/o National Museum of Natural History, Smithsonian Institution, P.O. Box 37012, MRC 168, Washington, DC 20013-7012, U.S.A. (e-mail:
[email protected]); (KN) Sistema Estudios de Posgrado en Biologia, Escuela de Biologia, Universidad de Costa Rica, 2060 San Jose, Costa Rica (e-mail:
[email protected]) Abstract. — Lusterala phaseolana, new genus and new species, is described and illustrated from Costa Rica. The new genus can be distinguished from all other Olethreutinae by its unusual male genitalia, with a digitate uncus covered with long hairs and the absence of socii, and its distinctive forewing maculation (i.e., dark brown with scattered iridescent scales). Assignment of the new genus to Grapholitini is provisional based on the general appearance and chaetotaxy of the larva and a feature of the wing venation (i.e.. Mo and M3 parallel and widely separated at the base). The entire type series was reared from stem galls on lima bean, Phaseolus lunatus L. (Fabaceae). Resurnen. — Se describen e ilustran un genero y especie nuevos, Lusterala phaseolana, de Costa Rica. El nuevo genero puede distinguirse de resto de Olethreutinae por el patron de las alas anteriores, con escamas iridiscentes dispersas, y por la inusual genitalia del macho, sin socii y con un uncus grande, en forma de lobulo y cubierto de pelos largos. La posicion de este nuevo genero en Grapholitini es provisional. Todos los especimenes de serie tipo fueron obtenidos a partir de agallas del tallo del frijol lima, Phaseolus lunatus L. (Fabaceae). Key Words: gall, life history, neotropics, new genus, new species, taxonomy, Cydia torostoma, Dolichogenidea Gall-inducing in Lepidoptera was re-inson et al. 2006), gall-inducing by viewed by Miller (2005) who recognized larvae of this family appears to be 39 species of Tortricidae in 14 genera a relatively rare habit that has evolved worldwide as gall-inducers, which is independently numerous times in various second only to Gelechiidae in the num-lineages. Known gall-inducers are found ber of gall-inducing species in any family primarily in three tribes, Cochylini (4 of microlepidoptera. Given that more genera) (Nishida and Adamski 2004, than 9,100 species of tortricids have been Miller 2005 and references therein), described (Brown et al. 2005), and hosts Grapholitini (3 genera) (Miller 2005), have been documented for many (Rob-and Eucosmini (6 genera) (Miller 2005);
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