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Species Account


USNM; Paratype; Female; 'Ti juana Mex.'; Date: 15.Je.08
i14163

USNM; Paratype; Female; 'Ti juana Mex.'; Date: 15.Je.08
i14164

USNM; Male; 'Atascosa Mt. ARIZ.'; Coll.: Oman; Date: 10.24.1937
i14165

USNM; Paratype; Female; 'Ti juana Mex.'; Date: 15.Je.08
NMW Image No. i14163

Texananus oregonus (Ball 1931g: 85 )

Membracoidea : Cicadellidae
Diseases Transmitted

Distribution Map
(simplified continental distribution)
Geographical Distribution:
North America

Recorded Distribution(s):
This species is limited to the Western United States and western Canada. It probably occurs in northern Mexi¬co. DeLong and Severin in 1945 (192) recorded it from Washington, Ore¬gon, California, and Mexico. In 1952, Crowder (149) in his revision re¬corded it from Arizona and stated it was prevalent along the Pacific coast but most abundant in California. Beirne (58) exam¬ined specimens from southern British Columbia. (Nielson, 1968)

Texananus oregonus (Ball 1931g: 85 )
Diseases Transmitted Pathogen Type
Crops Affected by Texananus oregonus (Ball 1931g: 85 )
Rice Citrus Carrot
Barley Apple Tomato
Maize (Corn) Pear Potato
Sugarcane Elm Strawberry
Wheat Palms Rubus
Sorghum Grapevine Papaya
Other (grasses/cereals) Ornamentals Peach

This species is a vector of the western strain of the North American aster yellows virus. In 1945 Severin (696) reported it first as a vector of this virus under the name of “Texananus pergradus DeLong as a vector,” which was an obvious typographical error. Discussion of the transmission experiments referred to the data on page 47 (table 19) under the heading “Texananus oregonus.” The virus was transmitted by males to 11 of 26 celery and by females to 17 of 41 celery plants.
(Nielson 1968)

This species is not considered an important vector in the natural spread of this virus in California.


(Nielson 1968)

Identification Plates
Texananus oregonus


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Plate 1
Species Description

Length:
Medium size, robust species. Length of male 6.00—6.50 mm., female 6.20—6.80 mm.

Colour:
General colour light brown to dark brown. Crown and pronotum tan, suffused with numerous brown reticulations; elytra tan with numerous brown or black reticulations.

Genitalia:
Pygofer in lateral aspect about as long as wide, caudal margin broadly convex; aedeagus in lateral aspect broad basally, narrowly attenuated apically, curved laterally; connective with paired apical processes, very broad, distinctly toothed along lateral margin; style in dorsal aspect simple, apices truncate; female seventh sternum in ventral aspect with caudal margin unevenly excavated.

Species Diagnosis

This species has unique male genitalia and can be distinguished from other vector species in Texananus by the broad lateral processes, arising ventrally from the base of the aedeagus, which are strongly pectinate apically. The genitalia are illustrated by DeLong and Severin in (1945) and Crowder (1952 ). Severin (1945) ) illustrated the adults in colour.

(Nielson 1968)

Ecology

Host Plant Activity Period (Months) Dormancy Generations
- -
Eggs -
Nymphs -
Adult -
One per year -
Continuous -
Variable -
Texananus oregonus (Ball 1931g: 85 )

Higher taxonomy

Kingdom Phylum Class Order Superfamily Family
Animalia Arthropoda Insecta Hemiptera
Suborder: Auchenorrhyncha
Infraorder: Cicadamorpha
Membracoidea Cicadellidae
Subfamily: Deltocephalinae
Texananus oregonus (Ball 1931g: 85 )
References
Nielson, M. W. 1968b. The leafhopper vectors of phytopathogenic viruses (Homoptera, Cicadellidae). Taxonomy, biology and virus transmission. United States Department of Agriculture Technical Bulletin . 1382 386 pp.
Record last updated - 25/09/2019