The Genus Togoperla Klapálek (Plecoptera: Perlidae)
Author
Stark, Bill P.
Author
Sivec, Ignac
text
Illiesia
2008
4
20
208
225
journal article
http://doi.org/10.5281/zenodo.4754843
d0f0400d-eb9b-4114-9a4e-a7f7f680e3a3
1854-0392
4754843
Togoperla canilimbata
(Enderlein)
(
Figs. 1‐6
,
57‐58
)
Perla canilimbata
Enderlein, 1909:347
.
Lectotype
♀
(
ZIP
), Manson‐ Gebirge,
Vietnam
.
Designation
Zwick, 1973b
Paragnetina tonkinensis
Navas, 1919:187
.
Holotype
♀
(MNHN, damaged),
Vietnam
. nov. syn.
Togoperla sinensis
Banks, 1939:442
.
Holotype
♂
(MCZ),
Yim Na San
,
Kwangtung
[
Guangdong
],
China
,
nov. syn.
Togoperla klapaleki
Banks, 1939:443
.
Holotype
♀
(MCZ),
Yim Na San
,
Kwangtung
[
Guangdong
],
China
,
nov. syn.
Material examined.
China
:
Guangdong
,
Yim Na San
,
11‐16 June 1936
,
L. Gressitt
,
3 ♀
(
MCZ
,
T. klapaleki
holotype
and
paratypes
). Same location,
11‐16 June 1936
,
L. Gressitt
,
1 ♂
,
1 ♀
(
MCZ
,
T. sinensis
holotype
and
paratype
)
.
Vietnam
: Manson‐
Gebrige
, 2‐3000’, April‐
May, H
. Fruhstorfer,
2 ♀
(
ZIP
,
T. canilimbata
lectotype
and
paralectotype
).
Lao Cai
,
Sapa
, large waterfall on road from
Sapa
to
Lai Chau
,
UV
light,
8 May 1995
,
ROM
956022
,
D. Currie
,
B. Hubley
,
J. Swann
,
16 ♂
,
1 ♀
(
ROM
,
IEBR
,
BPS
).
Lao Cai
,
Sapa
,
Fan Si Pang Mountain
,
22‐29 April 1995
,
1600 m
,
2 ♂
(
ZMB
)
.
Adult habitus.
General color dark brown, patterned with yellow. Head dark brown over ocelli, extending laterally over calluses and forward to M‐ line; a broad triangular dark patch is located forward of M‐ line (
Fig. 1
); head pale laterally and behind eyes on occiput. Pronotum brown with scattered paler rugosities. Wings dark brown except costal area pale to cord. Legs banded; both femora and tibiae with pale mesal band and dark basal and apical bands.
Male.
Forewing length
24‐26 mm
.
T
5 produced as an emarginate lobe;
T
6‐
T
9 typical with anterior margin and lateral areas sclerotized and mid section membranous; membrane of
T
6‐
T
9 and lobes of
T
5 somewhat hairy (
Fig. 2
). Dorsal aspect of hemiterga relatively short, length from basal callus to hemitergal tip about equal to length of basal callus. Membranous aedeagal sac terminating in a pair of slender, bare lateral lobes and a slender median lobe armed with fine brown setal spines; subapical area of aedeagus armed with a coarse band of triangular spines and microtrichia (
Figs. 5‐6
); spine band narrowly interrupted mid‐ dorsally but forming a complete band to beyond mid‐ length on venter. Dorsobasal area of aedeagus bearing a pair of small, bare lateral lobes.
Female.
Forewing length
28‐30 mm
. Subgenital plate parabolic, usually with a median notch or emargination; plate extends over much of S9 (
Fig. 3
); dorsal sclerite of plate not reaching to lateral margins
2 5 6
Figs. 1‐6.
Togoperla canilimbata
. 1. Head and pronotum, 2. Male terminalia, 3. Female terminalia, 4. Vagina, 5. Aedeagus, dorsal aspect, 6. Aedeagus, lateral aspect.
of sternum 8. Vagina with small bulge at midlength (
Fig. 4
); vaginal accessory glands subequal to vagina in length.
Egg.
Length
0.42‐0.44 mm
, width
0.30‐0.32 mm
. Collar absent, general shape oval (
Fig. 57
). Micropylar row set near equator. Chorion smooth (
Fig. 58
).
Distribution.
Known from southeastern
China
and northern
Vietnam
.
Remarks.
Sivec et al. (1988)
considered
T. canilimbata
,
T. fortunati
and
T. grahami
as synonyms and this was repeated by
Du & Chou (1999)
.
Zwick (1973b)
found
syntype
females of
T. canilimbata
and illustrated the
lectotype
subgenital plate and vagina; although the subgenital plate is shown without emargination, this is present on the
paralectotype
and the
two specimens
agree in coloration and in vaginal shape. Evidently the subgenital plate margin shows some variation in the expression of a notch or emargination. One of us (IS) examined the
lectotype
and
paralectotype
and noted both femora and tibiae have wide yellow median bands which are larger on the hind legs. This color pattern is in agreement with the leg pattern of
T. klapaleki
and
T. sinensis
described by
Banks (1939)
as “...black band at base and tip of femora and tibiae as in
perpicta
.
” Types of
T. fortunati
and
T. grahami
, however, lack pale tibial bands and also lack a dark basal band on the femora, consequently these species are removed from synonymy with
T. canilimbata
. A consequence of these changes in synonymy is the male of this species is now based on
T. sinensis
and the recent material from
Vietnam
with short hemitergal lobes, rather
than
T. fortunati
and
T.
grahami
with long hemitergal lobes.
Togoperla tonkinensis
had been reported only from the
holotype
, supposedly a male, but with the abdomen missing. The damaged specimen from
Vietnam
, in the Museum National d’Histoire Naturelle has the head, thorax, wings and some legs intact. The legs show the characteristic banding pattern associated with
T. canilimbata
and allows the placement of
T. tonkinensis
as a synonym of that species.
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