Review of the genus Synochoneura Obraztsov, with the description of a new species from China (Lepidoptera: Tortricidae)
Author
Wang, Xinpu
Author
Li, Houhun
text
Zootaxa
2007
1547
51
57
journal article
10.5281/zenodo.178018
01f02460-e819-4100-a5eb-ee9d38931c8b
1175-5326
178018
Synochoneura
Obraztsov, 1955
Synochoneura
Obraztsov, 1955
,
Tijdschr. Ent
.,
98
(3): 151.
Type
species.
Eulia ochriclivis
Meyrick, 1931
, by original designation.
Diagnosis. The genus
Synochoneura
is characterized by the following characters: forewing with all veins separate, R2 to termen, chorda weak; hindwing with Rs-M1 stalked almost to middle and M1-Cu1 connate; male genitalia with uncus slender, socius slender and dropping, terminal plate of gnathos blunt, valva with broad basal half, costa developed, sacculus distinctly sclerotized and with free termination, pulvinus developed, juxta expanded dorsally in middle, and vesica with sclerotized fold; female genitalia with apophyses posteriores provided with a broad basal plate, sterigma with a broad anterior portion, antrum weak, and signum dagger-shaped, without capitulum.
Discussion. In his description of the genus,
Obraztsov (1955)
assigned
Synochoneura
to
Cnephasiini
.
Razowski (1987)
transferred the genus to
Archipini
based primarily on the well developed costa of the valva in the male genitalia. Subsequently,
Razowski (1993)
transferred it to
Euliini
, a view shared by
Kuznetsov (2001)
.
Powell (1986)
indicated that apomorphies of
Cnephasiini
are a spined uncus, a floricomous ovipositor, and a band-shaped, dentate signum. Because all known species of
Synochoneura
lack these characters, assignment to
Cnephasiini
is problematic. Moreover, species of
Synochoneura
lack a foreleg hairpencil in the male and have a large signum in the female, so assignment to
Euliini
is questionable. The large dagger-shaped signum, well developed pulvinus, and differentiated ductus and corpus all indicate that
Synochoneura
is likely a generalized member of
Archipini
, as proposed by
Razowski (1987)
.
Synochoneura
is close to
Terthreutis
, sharing the following characters: uncus curved with a few bristles, socius slender and dropping, and transtilla narrowed at the middle. It differs from
Terthreutis
by the sacculus having a free termination, the pulvinus being distinct, the vesica possessing a sclerotized fold, and the apophyses posteriores with a broad basal plate. It is possible that the sclerotized fold in the vesica, the large daggershaped signum, and the broad basal plate of the apophyses posteriores represent autapomorphies for
Synochoneura
.
Biology. Adults have been collected from mountainous regions at elevations between
900–2150 m
in May, June, July, and August. The early stages are unknown.
Distribution.
China
.