PROC. ENTOMOL. SOC. WASH. 108(3), 2006, pp. 534-542 TWO NEW SPECIES OF THE NEOTROPICAL LEAFHOPPER GENUS CALDWELLIOLA YOUNG (HEMIPTERA: CICADELLIDAE) WITH A KEY TO MALES Stuart H. McKamey Systematic Entomology Laboratory, PSL Agricultural Research Service, U.S. Department of Agriculture, c/o National Museum of Natural History, Smithsonian Institution, Washington, DC 20560-01 68, U.S.A. (e-mail:
[email protected]) Abstract. — Two new species of CakhveUiola are described, C. sinuata from Honduras and C. trilhieata from Ecuador, bringing the current total valid species in the genus to eleven. A key to males of all species is presented. The species C. hipimctata Nielson and Godoy, 1995, is placed in synonymy under C lutea Signoret, 1855, n. syn. One species, C. caucana Young, has been implicated as a likely vector of the bacterium Xy/e/Ia fastidiosa Wells, which causes the '"crespera' disease, coffee leaf scorch, in Colombia and elsewhere in the Neotropical Region. Key Words: Cicadellinae, coffee leaf scorch, Xylella. Honduras, Ecuador, Hortensia, Chlorogoucdia There is some truth in the generaliza-tion that "most leaflioppers are small and green," as many are cryptically colored and blend into the green foliage upon which they feed, and most are less than a centimeter long. The subfamily Cicadellinae {sensu Young 1968), or sharpshooters, is especially large and diverse. The New World, mostly tropical fauna alone comprises over 1,500 species in over 230 genera. Moreover, the tribe Cicadellini, with over 1,100 New World species, contains some of the largest leafhoppers and also some of the most common small green leafhoppers. Within this tribe, Horteusia Metcalf and Bruner, Chlorogomdia Young, and CaldwcUiola Young are commonly en-countered, are externally similar to each other, and all have small, green species distributed from Mexico through Boli-via. Although Hortensia is monotypic, individuals vary surprisingly in size across its range, yet are easily identified by the coloration of the head (Young 1977: fig. 654). Chorogonalia and Cald-]vedio/a, however, are less easily distin-guished, especially from each other because of superficial similarities in size and color, especially that of the head (Figs. 1-2). Diagnostic features to dis-tinguish undissected males and females of these two genera are provided in a review of CJdorogoualia (McKamey 2006). When originally described (Young 1977), Ccddnrd/io/a contained eight spe-cies, six of them new. Nielson and Godoy (1995) described the species C. hipimctata and McKamey (2006) added one additional species {Chlorogoiudia tharma Young). In the present paper, two new species of CakhveUiola are described and one is placed in synonymy. A key to males of all species is presented so that C. caucana Young, a likely vector
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