Revision Of New World Plagiognathus Fieber, With Comments On The Palearctic Fauna And The Description Of A New Genus (Heteroptera: Miridae: Phylinae)
Author
SCHUH, RANDALL T.
text
Bulletin of the American Museum of Natural History
2001
2001-11-08
2001
266
1
267
http://www.bioone.org/doi/abs/10.1206/0003-0090%282001%29266%3C0001%3ARONWPF%3E2.0.CO%3B2
journal article
10.1206/0003-0090(2001)266<0001:RONWPF>2.0.CO;2
0003-0090
5381844
Sthenarus viticola
Johnston, 1935: 16
(n. sp.).
DIAGNOSIS: Recognized by the
small size, orange coloration
(fig. 14) of dorsum tinged with brown, and
entirely pale antennae and tibiae.
Similar in coloration of dorsum to
cornicola
and
delicatus
,
but distinguished from them by the smaller size, the entirely pale antennae, and the tibial spines without dark spots at bases.
REDESCRIPTION:
Male:
Small, delicate; total length 2.68–2.98, length apex clypeus–cuneal fracture 2.68–2.98, width across pronotum 0.97–1.02. COLORATION (fig. 14): Coloration of dorsum very weakly mottled, varying from pale greenish to orange or golden brown, the last being the most common; calli almost always darker than remain der of pronotum; antennae entirely pale (fig. 19); clypeus usually castaneous, sometimes much of face below antennal insertions also castaneous; labium pale except at base and apex; venter brown, including metathoracic scentgland evaporatory area; legs almost entirely pale, including coxae; femora often with some dark spots; tibiae pale over entire length; tibial spines without dark spots at bases. SURFACE AND VESTITURE: Dorsum weakly granular, smooth, moderately shining. Vestiture of dorsum composed of recumbent, pale, golden, shining, simple setae. STRUCTURE: Body elongate ovoid, hemelytra declivent laterally, dorsum noticeably convex; pronotum declivent anteriorly; frons nearly straight across between eyes, head strongly declivent, clypeus never visible from above; anteocular distance 1.5 times diameter of antennal segment 1; head projecting below eye by diameter of antennal segment 1; labium reaching to apex of hind coxae. GENITALIA (fig. 33): Body of vesica relatively stout, very strongly curving, Ushaped, base of vesica falling somewhat below level of secondary gonopore; posterior apical spine longer, weakly curving and forming a weak angle relative to body of vesica, anterior spine much longer than posterior, curving toward apex, and nearly perpendicular to body of vesica; vesical flange moderately developed, reaching to about base of secondary gonopore.
Female:
Very similar to male in coloration but body more strongly ovoid in outline. Total length 2.63–2.85, length apex clypeus–cuneal fracture 1.81–1.92, width across pronotum 0.97–1.02.
HOSTS:
Vitis
spp. (Vitacae)
.
DISTRIBUTION: Known from widely scattered localities in the eastern
United States
, from
Pennsylvania
and
Illinois
in the north to
Mississippi
and
Texas
in the south.
DISCUSSION: This species was described in
Sthenarus
and has been maintained there by subsequent authors; my concept of it is based on the examination of a single
paratype
and other material that I consider to be authoritatively identified. Examination of the male genitalia clearly indicates that
viticola
is a
Plagiognathus
species
, however.
SPECIMENS EXAMINED:
USA
.—
Illinois
:
Hardin Co.:
Elizabethtown,
June 22, 1932
, Ross, Dozier, and Park,
1♀
(USNM).
Mississippi
:
Alcorn Co.:
Corinth,
May 25, 1931
, H. G. Johnston,
paratype
: 13 (USNM).
Pennsylvania
:
Dauphin Co.:
near Clark’s Ferry,
June 8, 1983
, A. G. Wheeler, Jr.,
Vitis labrusca
(Vitaceae)
, 53,
3♀
(PDA). Nyes and Willoughby Roads,
May 25, 1977
–
June 10, 1975
, T. J. Henry,
Vitis
sp. (Vitaceae)
, 43,
12♀
(PDA).
Tennessee
:
McNairy Co.:
E of Eastview on Rt 57,
May 31, 1985
, A. G. Wheeler, Jr.,
Vitis
sp. (Vitaceae)
, 13,
1♀
(PDA).
Texas
:
Brazos Co.:
3 mi
NE of Edge,
May 25, 1984
, T. L. Harrison, 13 (CNC).
Travis Co.:
Shelberg Tract near Cypress Creek arm of Lake Travis,
May 8, 1994
, J. C. Schaffner,
1♀
(CNC).