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Genus Cuerna

red-and-black leafhopper - Cuerna striata Tiny unknown insect,Cochrane,Ab - Cuerna striata BG2310 E6716 - Cuerna costalis hopper 28 - Cuerna Cuerna striata? - Cuerna striata Cuerna costalis Cicadellidae  - Cuerna costalis Unknown sharpshooter: Cuerna? - Cuerna costalis
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hemiptera (True Bugs, Cicadas, Hoppers, Aphids and Allies)
Suborder Auchenorrhyncha (Free-living Hemipterans)
Superfamily Cicadoidea (Cicadas, Leafhoppers, and Treehoppers)
Family Cicadellidae (Leafhoppers)
Subfamily Cicadellinae (Sharpshooters)
Tribe Proconiini
Genus Cuerna
Explanation of Names
Cuerna Melichar, 1925
21 spp. in our area, 26 species total (1)

Species: (1)

alpina group
Cuerna alba Oman & Beamer, 1944 (AZ, NM, TX)
Cuerna alpina Oman & Beamer, 1944
Cuerna alta Oman & Beamer, 1944 (NM)
Cuerna arida Oman & Beamer, 1944
Cuerna balli Oman & Beamer, 1944 (western US, Mex.)
Cuerna curvata Oman & Beamer, 1944 (CA, NV, UT)
Cuerna emeljanovi Krishnankutty & Rakitov, 2015 (CA, NV)
Cuerna lyrifora Krishnankutty & Rakitov, 2015 (TX, Mex.)
Cuerna obesa Oman & Beamer, 1944
Cuerna obtusa Oman & Beamer, 1944 (AZ, CO, NM, UT)
Cuerna occidentalis Oman & Beamer, 1944
Cuerna stitti Nielson, 1965 (AZ)
Cuerna unica Nielson, 1965
Cuerna yuccae Oman & Beamer, 1944

costalis group
Cuerna costalis (Fabricius, 1803)

sayi group
Cuerna fenestella Hamilton, 1970
Cuerna sayi Nielson, 1965

striata group
Cuerna gladiola Oman & Beamer, 1944 (CA, OR)
Cuerna hasbroucki Nielson, 1965 (AZ, CA, OR)
Cuerna kaloostiani Nielson, 1965 (AZ)
Cuerna striata (Walker, 1851)

Extralimital species:
Cuerna krameri Nielson, 1965 (Mex./ alpina group)
Cuerna semibulba Nielson, 1965 (Mex./ alpina group)
Cuerna angusta Nielson, 1965 (Mex./ costalis group)
Cuerna mexicana Oman & Beamer, 1944 (Mex., Guat., Hond./ costalis group)
Cuerna oaxacensis Krishnankutty & Rakitov, 2015 (Mex., Costa Rica/ costalis group)
8-10 mm
common species are black and red with longitudinal stripes on the forewings
North America (AK to Panama), by far most diverse in the west (esp. sw. US)(2)
fields, meadows
hosts: mostly grasses
Life Cycle
overwinters as adult
some species are vectors of plant diseases
Print References
Hamilton, K.G.A. 1970. The genus Cuerna (Homoptera: Cicadellidae) in Canada. Canadian Entomologist 102: 425-441. (description).
Nielson, M.W. 1965. A revision of the genus Cuerna (Homoptera, Cicadellidae). Technical Bulletin of the United States Department of Agriculture 1318: 1-48. (description, hosts).
Internet References
C. costalis nymph anointing itself with liquid secretion (video)
Works Cited
1.Taxonomy and Phylogeny of the North American Leafhopper Genus Cuerna (Hemiptera: Cicadellidae)
S.M. Krishnankutty, R. Rakitov, & C.H. Dietrich. 2015. Annals of the Entomological Society of America 108 (3): 339-371.
2.Dmitriev D.A. (2003-) 3I interactive keys and taxonomic databases