PROC. ENTOMOL. SOC. WASH. 109(2), 2007, pp. 400^15 KELISIA AND STENOCRANUSSPY.C\^S (HEMIPTERA: FULGOROMORPHA: DELPHACIDAE): NEW HOST-PLANT ASSOCIATIONS AND DISTRIBUTIONAL RECORDS OF EIGHT SEDGE-FEEDING PLANTHOPPERS Charles R. Bartlett and A. G. Wheeler, Jr. (CRB) Department of Entomology and Wildlife Ecology, 250 Townsend Hall, University of Delaware, Newark, DE 19716-2160, U.S.A. (e-mail:
[email protected]); (AGW) Department of Entomology, Soils, and Plant Sciences, Clemson University, Clemson, SC 29634-0315, U.S.A. (e-mail:
[email protected]) Abstract. — Host-plant associations are poorly known for North American planthoppers of the genera Kelisia and Stenocranus, whose respective subfamilies -Kelisiinae and Stenocraninae -are considered sister taxa. We report sedges (Cyperaceae) as hosts of the delphacids K. flava Reamer, K. parvicurvatci Beamer, K. spiiiosa Beanier, K. torquata Beamer, K. vesiculate/ Beamer, S. hrimneiis Beamer, S. lautiis Van Duzee, and -S. imipimctatus Provancher. Collections from the southern Appalachians (North Carolina, South Carolina, and Tennessee) and upper Piedmont (South Carolina) are the first southeastern U.S. records for all of the planthopper species except K. flava, K. parvicurvata, and S. lautus. Stenocranus lautus was collected from Cyperus spp., but the other seven delphacids were associated with diverse Carex spp. representing six sections of the genus. Hosts were generally common, widely distributed sedges. Stenocranus hrunneus, however, was found on C. austrocarolinicuia and C. radfordii, plant species of limited distribution and special concern. Taxonomic notes on the eight species are provided, as are morphological illustrations and notes on the habitats or communities in which they were found. Key Words: Auchenorrhyncha, Fulgoroidea, Cyperaceae, Carex, Cyperus Kelisia Fieber, a mainly Holarctic Stenocranus Fieber, belonging to the genus of the delphacid subfamily Keli-closely related Stenocraninae (Dijkstra et siinae, comprises 45 species, 12 of which al. 2003, Bartlett 2006), includes about occur in North America (Beamer 1945, 66 species, mostly Laurasian in distribu-1951a). European species of the genus tion (Metcalf 1943, Calvert and Wilson feed mostly on sedges (Cyperaceae), 1986, Chen and Liang 2005, Bartlett especially Carex species (Wilson et al. 2006), although it is apparently not 1994, Holzinger et al. 2003, Nickel monophyletic (Asche and Remane 2003). Specific host associations for the 1982, Asche 1985). In the New World, 12 North American species of Kelisia Stenocranus consists of 16 species (Met-(Beamer 1951a) are unknown (Wilson et calf 1943; Beamer 1946a, b), one of al. 1994) except for K flava Beamer, which is not North American, 5'. macu-which has been collected on Scirpus lipes (Berg, 1879) from Argentina, plus cyperinus (L.) Kunth, a sedge (Denno one species, S. luteivitta Walker, 1851, 1978). that is incertae sedis (Beamer 1946a). In
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