Erythridula obliqua (Say, 1825)

Tettigonia obliqua Say, 1825a:342

Erythroneura obliqua Fitch, 1851a:63

Erythroneura obliquua Van Duzee, 1914a:57 (Missp.)

Erythroneura obliqua var. pelta McAtee, 1920a:278 (syn.n.)

Erythroneura (Erythridula) obliqua Young, 1952b:83

Arboridia (Erythridula) obliqua Dworakowska, 1970g:615

Erythroneura (Erythridula) vierii Hepner, 1976b:125 (syn.n.)

Erythridula obliqua Dietrich & Dmitriev, 2006a:130

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Diagnosis

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Autogenerated Description

Body. Length 2.9–3.1 mm.

Wings. Forewing outer apical cell about 2X as long as wide.

Abdomen. 2S abdominal apodemes large, broad, reach 3S posterior margin.

Male Genitalia. Pygofer lobe rounded. Pygofer dorsal appendage simple, extended to pygofer apex, straight or very slightly curved in dorsal view, curved downward in lateral view. Dorsal branch of pygofer dorsal appendage well developed, ventral branch absent. Second point of style apex very short, toothlike, or absent. Third point elongate, longer than half distance between other two points. Angle between basal and third points about 90°. Dorsal apodeme of aedeagus with distinct V-shaped ligaments, connected to anal tube and/or pygofer appendages. Aedeagus with preatrium shorter than shaft. Aedeagal shaft straight in lateral view, slender in lateral view, round in cross section, smooth, with small dorsal distal lobe. Aedeagal apex acuminate in ventral view. Aedeagus without apical vestiture. Aedeagus ventral processes placed basally, close to shaft, shorter than shaft, parallel to each other on ventral side of aedeagus. Aedeagus distal processes absent.

Coloration. Dorsum yellow or white. Color pattern red or orange. Vertex with oblique lateral vittae. Vertex midline pale. Anteclypeus pale, concolorous with rest of face. Pronotum dark with pale lateral margins or pale with two longitudinal stripes. Mesonotum entirely pale. +mesonotum apex concolorous with rest of mesonotum. Thoracic venter entirely pale. Forewings with oblique vittae, without crossbands. Clavus with continuous vitta parallel to suture. Forewings without dark spot on costal margin. Forewing apical cell II without distal spot, inner apical cell without brown spot.

Distribution

Host Plants

Plants Number of Specimens Collected (Localities)    Ulmus alata     69 (25)     27.17%     Ulmus americana     44 (14)     17.32%     Ilex decidua     24 (12)     9.45%     Ulmus sp.     22 (7)     8.66%     Aesculus sp.     14 (5)     5.51%     Ostrya virginiana     12 (4)     4.72%     Quercus alba     8 (3)     3.15%     Tilia americana     7 (2)     2.76%     Quercus macrocarpa     6 (3)     2.36%     Carpinus caroliniana     5 (3)     1.97%     Quercus sp.     4 (1)     1.57%     Acer saccharum     3 (2)     1.18%     Carpinus sp.     3 (1)     1.18%     Cercis canadensis     3 (2)     1.18%     Quercus lyrata     3 (1)     1.18%     Acer sp.     2 (2)     0.79%     Fagus grandifolia     2 (2)     0.79%     Malus ioensis     2 (1)     0.79%     Quercus falcata     2 (2)     0.79%     Quercus stellata     2 (2)     0.79%     Crataegus mollis     1 (1)     0.39%     Fagus sp.     1 (1)     0.39%     Juglans cinerea     1 (1)     0.39%     Platanus occidentalis     1 (1)     0.39%     Quercus marilandica     1 (1)     0.39%     Quercus muehlenbergii     1 (1)     0.39%     Quercus nigra     1 (1)     0.39%     Quercus phellos     1 (1)     0.39%     Quercus prinus     1 (1)     0.39%     Quercus rubra     1 (1)     0.39%     Quercus rubra var. ambigua     1 (1)     0.39%     Quercus shumardii     1 (1)     0.39%     Quercus velutina     1 (1)     0.39%     Sassafras albidum     1 (1)     0.39%     Tilia sp.     1 (1)     0.39%     Ulmus rubra     1 (1)     0.39%     Viburnum dentatum     1 (1)     0.39%     Total   254 (111)

Studied Material

USA: 1sp. (Holotype of Erythroneura obliqua var. pelta McAtee, 1920), Maryland, Montgomery Co., Plummers Island, 38.969°N 77.177°W, 8 VI 1913 (McAtee), (USNM). 1m (Holotype of Erythroneura vierii Hepner, 1976), Mississippi, Oktibbeha Co., State College, 33.451°N 88.783°W, on Ulmus alata, 13 VI 1967 (Hepner), (INHS). Lost type: 1sp., Nebraska, Washington Co., Engineer Cantonment, (Reference). Neotype: 1m, Kansas, Douglas Co., 1927, (Beamer), (KSEM). Canada: 1m, 2f, Ontario, 3 mi. S. Smiths Falls, 44.881°N 76.012°W, on Ostrya virginiana, 7 VIII 1974 (Hamilton), (CNC). 1f, Ontario, Hurd L., 5 mi. S. Renfrew, 45.401°N 76.664°W, on Ostrya virginiana, 8 VI 1975 (Hamilton), (CNC). 1m, 5f, Ontario, Maynooth, 45.231°N 77.938°W, on Tilia americana, 5 IX 1953 (McAlpine), (CNC). 1m, 6f, Ontario, Mount Pleasant, on Ostrya virginiana, 9 VII 1962 (Thorpe), (CNC). 1m, 3f, Quebec, Harrington Lake (Lac Mousseau), Gatineau Park, 45.568°N 75.962°W, 27 V 1954 (Richards), (CNC). USA: 1m, Arkansas, Washington Co., 30 VI 1940 (Sanderson), (KSEM). 1m, Arkansas, Washington Co., Winslow, 35.801°N 94.135°W, on Ulmus alata, 31 VII 1963 (Hepner), (MEM). 1m, Florida, Miami, 25.774°N 80.194°W, 17 III 1933 (Breakey), (OSU). 1m, Florida, Santa Rosa Co., on Ulmus alata, 25 VII 1955 (Mead), (MEM). 1m, Georgia, Bartow Co., Cartersville, 34.165°N 84.8°W, 24 VII 1962 (Glenn Wiygul), (MEM). 3m, Illinois, Mansville, on Ulmus americana, 15 X 1955 (Ross), (MEM). 3m, Illinois, Mansville, on Ulmus americana, 15 X 1960 (Ross), (MEM). 2m, Illinois, Brown Co., Siloam Springs, 39.888°N 90.916°W, (Ross & Cunningham), (MEM). 5m, Illinois, Brown Co., Siloam Springs, 39.888°N 90.916°W, 29 IV 1960 (Ross & Cunningham), (MEM). 4m, Illinois, Calhoun Co., Kampsville, 39.298°N 90.609°W, on Quercus macrocarpa, 2 X 1952 (Mills & Ross), (INHS). 1m, Illinois, Calhoun Co., Kampsville, 39.298°N 90.609°W, on Ilex decidua, 2 X 1952 (Mills & Ross), (INHS). 3m, Illinois, Champaign Co., Champaign, 40.116°N 88.243°W, ground cover, 7 I 1956 (Cunningham), (INHS). 1m, Illinois, Champaign Co., Champaign, 40.116°N 88.243°W, 2 X 1956 (McAlpine), (CNC). 1m, Illinois, Champaign Co., Urbana, 40.111°N 88.207°W, 17 XI 1918 (Sanderson & Stannard), (INHS). 2m, Illinois, Champaign Co., Urbana, 40.111°N 88.207°W, on Ulmus sp., 28 VIII 1934 (Ross & Townsend), (INHS). 4m, Illinois, Champaign Co., Urbana, 40.111°N 88.207°W, on Quercus sp., 6 IX 1934 (DeLong & Ross), (INHS). . . . . . . . . . . . . . . Show all records.

Museum Abbreviations

References

Beamer, R.H., 1930b. Some Erythroneura of the obliqua group (Homoptera, Cicadellidae). Ann. Entomol. Soc. America. 23: 417-456. (description, good illustrations, key, records).

DeLong, D.M., 1916a. The leafhoppers or Jassoidea of Tennessee. Bull. Tennessee St. Board Entomol. 5(2:17): 1-113. (description, key, records).

DeLong, D.M., Caldwell, J.S., 1937c. Check list of the Cicadellidae (Homoptera) of America, north of Mexico. Ohio: State University. IV+93 p. (records).

DeLong, D.M., Knull, D.J., 1945a. Check list of the Cicadellidae (Homoptera) of America, north of Mexico. Columbus: Ohio St. Univ. Press. V+102 p. (records).

Dietrich, C.H., Dmitriev, D.A., 2006a. Review of the New World genera of the leafhopper tribe Erythroneurini (Hemiptera: Cicadellidae: Typhlocybinae). Bull. Illinois Natur. Hist. Surv. 37(5): I-IV, 119-190.

Fitch, A., 1851a. Catalogue with references and descriptions of the insects collected and arranged for the State Cabinet of Natural History. Ann. Rpt. State Cab. Natur. Hist. 4: 43-69. (records).

Hamilton, K.G.A., 1985a. Leafhoppers of ornamental and fruit trees in Canada. Agr. Canada Publ. 1779E: 1-71. (description, illustrations, records, hosts).

Hepner, L.W., 1976b. Sixteen new species of Erythroneura (Erythridula) from Eastern North America (Homoptera, Cicadellidae). III. J. Georgia Entomol. Soc. 11(2): 119-126. (description, good illustrations, records, hosts).

Johnson, D.M., 1935a. Leafhoppers of Ohio. Subfamily Typhlocybinae (Homoptera: Cicadellidae). Bull. Ohio Biol. Surv. 31: 39-122. (description, illustrations, key, records, hosts).

Maw, H.E.L., Foottit, R.G., Hamilton, K.G.A., Scudder, G.G.E., 2000a. Checklist of the Hemiptera of Canada and Alaska. Canada, Ontario, Ottawa: NRC Research Press. VIII+220 p. (records).

McAtee, W.L., 1920a. Key to the Nearctic species and varieties of Erythroneura (Homoptera; Eupterygidae). Trans. American Entomol. Soc. 46: 267-321, pl. XII. (description, good illustrations, key, records).

McAtee, W.L., 1924c. Notes on eupterygid leaf-hoppers with descriptions of a few forms (Homoptera). Florida Entomologist. 8(3-4): 33-39. (records).

McAtee, W.L., 1924d. Records of species of the genus Erythroneura (Homoptera; Eupterygidae) with descriptions of new forms. Proc. Biol. Soc. Washington. 37: 131-134. (records).

McAtee, W.L., 1924e. Notes on a collection of Erythroneura and Hymetta (Eupterygidae) chiefly from Illinois, with descriptions of new forms. Bull. Illinois Natur. Hist. Surv. 15(2): 39-44. (records).

McAtee, W.L., 1926c. Notes on Homoptera from Illinois, with descriptions of new forms, chiefly Eupteryginae. Bull. Illinois Natur. Hist. Surv. 16(3): 127-136. (records).

Metcalf, Z.P., 1968a. General catalogue of the Homoptera. VI. Cicadelloidea. 17. Cicadellidae. Washington: US Dept. Agr. VII+1513 p. (records).

Osborn, H., 1928b. Leafhoppers of Ohio (Cicadellidae). Bull. Ohio Biol. Surv. 3(4): 199-374. (description, key, records).

Osborn, H., Knull, D.J., 1947a. Check list of Ohio leafhoppers (Homoptera: Cicadellidae). Ohio J. Sci. 46(6): 329-336. (records).

Robinson, W., 1926a. The genus Erythroneura north of Mexico (Homoptera, Cicadellidae). Kansas Univ. Sci. Bull. 16(3): 101-155. (description, illustrations, key, records, hosts).

Say, T., 1825a. Descriptions of new Hemipterous insects collected in the expedition to the Rocky Mountains, performed by order of Mr. Calhoun, Secretary of War, under command of Major Long. J. Acad. Natur. Sci. Philadelphia. 4: 307-345. (original description, records).

Vidano, C., Arzone, A., 1983a. Biotaxonomy and epidemiology of Typhlocybinae on vine. Proc. 1st Intern. Workshop on Biotaxonomy, Calssification and Biology of Leafhoppers and Planthoppers (Auchenorrhyncha) of Economic Importance, London, 4-7 Oct. 1982. London. P. 75-85. (records, hosts).

Walsh, B.D., 1862a. Fire blight. Two new foes of the apple and pear. Prairie Farmer. (N.S.). 10: 147-149. (records).

Young, D.A., 1952b. A reclassification of Western Hemisphere Typhlocybinae (Homoptera, Cicadellidae). Univ. Kansas Sci. Bull. 35(1:1): 3-217. (good illustrations).

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Erythridula Young, 1952