Review of the Cyana rejecta (Walker, 1854) species-group, with descriptions of three new species from mainland Africa and a new subspecies from Madagascar (Lepidoptera, Erebidae, Arctiinae, Lithosiini)
Author
Volynkin, Anton V.
The African Natural History Research Trust (ANHRT), Street Court Leominster-Kingsland, HR 6 9 QA, United Kingdom & Altai State University, Lenina Avenue, 61, RF- 656049, Barnaul, Russia. & monstruncusarctia @ gmail. com; https: // orcid. org / 0000 - 0001 - 9447 - 4925
Author
László, Gyula M.
The African Natural History Research Trust (ANHRT), Street Court Leominster-Kingsland, HR 6 9 QA, United Kingdom & gyulalaszlo @ anhrt. org. uk; https: // orcid. org / 0000 - 0001 - 9862 - 8290
text
Zootaxa
2020
2020-12-03
4890
3
330
346
journal article
9390
10.11646/zootaxa.4890.3.2
b0c87592-1fbb-49d4-9db0-df99055671af
1175-5326
4306199
36AB3035-FF11-4789-ABA6-327597463253
Cyana
(
Cornutivulpecula
)
occidentalis
sp. n.
(
Figs 16–20
,
33–35
,
42
)
Type material.
Holotype
(
Figs 16
,
33
): male, “
Liberia
,
883m
,
Lofa County
,
Wologizi Mts.
,
Ridge Camp
2,
8°7’20.79’’N
9°56’50.75’’W
22–31.XI.2018
,
Light Trap
,
Blended Bulb
(250 W), Sáfián, Sz.,
Simonics, G.
leg.,
ANHRT
:2018.43” / “ANHRTUK 00070119”, gen. slide No.: AV5255 (
ANHRT
).
FIGURES 19–26.
Cyana
spp.: adults. Depositories of specimens: 19–24 in ANHRT; 25 in ZSM; 26 in NHMUK (©).
FIGURES 27–29.
Cyana rejecta
sspp.: male genitalia. Depositories of specimens: 27 and 29 in NHMUK (©); 28 in ZSM.
Paratypes
(
9 males
and
7 females
in total).
GUINEA
:
1 male
,
700m
,
Guineé Forestiére
,
Monts
Nimba
UNESCO
World Heritage Site
,
Serengbara Village
to
Yie River Valley
(
Lowland Forest–Farmland
),
07°36’56’’N
,
08°26’54’’W
,
1–8.VII.2019
,
UV
Cold Cathode Light Trap
,
Deroziér
,
V
.,
Koivagui, S.
,
Miles, W.
,
Sáfián, S.
,
Warner
,
R
. leg,
ANHRT
:2019.11, unique number: ANHRTUK 00150622, gen. slide
No.
: AV5997 (
ANHRT
)
;
LIBERIA
:
2 males
,
3 females
, with the same data as the holotype, unique numbers:ANHRTUK 00070118, 00070120, 00070391, 00101430, 00101431, gen. slide
Nos
: AV5254 (male), AV5729 (female)
;
1 male
,
1327m
,
Nimba County
,
ENNR
,
Nimba
Mts.
main ridge (montane forest),
7°311.3N
,
8°311.0W
,
9.XII.2017
,
Light Tra
(blended bulb 250
W
),
Aristophanous, M.
,
Sáfián, Sz.
,
Simonics, G.
,
Smith, L.
leg.,
ANHRT
:2017.33, unique number: ANHRTUK 00148090 (
ANHRT
);
TOGO
:
1 male
,
505m
,
Fazao-Malfakassa
NP,
Mare
aux crocodiles campsite (
Sudanian
savannah/dry forest), 8°44’58.8’N
0°48’51.8’’E
,
26.VIII.–7.IX.2018
,
MV
Light Trap
,
Aristophanous, M.
,
Geiser
, M.,
Moretto
, P.,
Sanbena, B.
leg.,
ANHRT
:2018.31, unique number:ANHRTUK 00062251, gen. slide No.: AV5231;
1 female
,
415m
,
Fazao-Malfakassa
NP,
Point
de vue campsite (
Sundanian
savannah),
8°48’50’’N
0°49’3.2’’E
,
16–23.VIII.2018
,
Actinic Light Trap
,
Aristophanous, M.
,
Geiser, M.
,
Moretto
, P.,
Sanbena, B.
leg.,
ANHRT
:
2018.31, unique number: ANHRTUK 00062316, gen. slide
No.
: AV5232 (
ANHRT
)
;
CAMEROON
:
1 male
,
1246m
,
Adamawa Region
,
Adamawa
Plateau
,
7.3 km
West of Bazanga
,
Chute De Tello
,
07°13’50.6’’N
13°56’29.2’’E
,
24–30.IX.2018
,
MV
Light Trap
,
Sáfián
,
Sz.
,
Simonics, G.
leg.,
ANHRT
:
2018.36, unique number: ANHRTUK 00078429, gen. slide
No.
: AV5731 (
ANHRT
)
;
ANGOLA
:
1 male
,
Libollo
,
Angola
[Pemberton] /
Rothschild Bequest B.M.
1939-1, unique number:
NHMUK10918068
,
gen. slide
No.
:
NHMUK010315730
(prepared by
Volynkin
)
;
1 male
,
N’Dalla Tando
,
N Angola
,
2700 feet
,
28.XI.1908
,
Dr. W.J. Ansorge
;
1 female
, same locality and collector,
23.XI.1908
;
2 females
,
Fazenda Congulu
,
Amboim district
,
7–800m
,
12–16.IV.1934
;
1 female
,
Calweha
R
.,
Angola
13.
V
.
[19]96 (
Penrice
) (
NHMUK
)
;
ZAMBIA
:
1 male
,
1400m
,
Hillwood
,
Ikelenge
, S
11°16’02’’ E
24°18’59’’,
9–16.
V
.2015,
Light Trap
, leg.
Smith
,
R
.,
Takano
, H. &
Aristophanous, M.
,
ANHRT
:
2017.13, unique number: ANHRTUK 00042382, gen. slide
No.
: AV5233 (
ANHRT
)
.
Diagnosis
. The forewing length is
10.5–12 mm
in males,
11.5–12.5 mm
in females. The new species differs externally from
C. yao
sp. n.
and
C. cornutissima
sp. n.
by its slightly paler coloration, but reliable identification requires examination of genitalia morphology. The male genitalia of the new species are reminiscent of those of
C. rejecta
, but are distinguished by their more heavily setose anellus, and a more robust aedeagus. The vesica of the new species is markedly shorter, with smaller and unilobate subbasal diverticulum bearing smaller spinules (which is bilobate with longer spinules in its congeners), more heavily scobinated 1
st
medial diverticulum and much smaller and more heavily scobinated 2
nd
medial diverticulum compared to those of
C. rejecta
. In addition,
C. occidentalis
has a 3
rd
medial diverticulum of the vesica which is absent in
C. rejecta
, and its distal diverticulum bears two well-separated rows of robust spine-like cornuti, whereas the two rows of spines of the distal diverticulum are apically connected in
C. rejecta
. The female genitalia of
C. occidentalis
differ from those of the other members of the species-group by the markedly wider ostium bursae, the more heavily sclerotized and extended wrinkles of the posterior section of the corpus bursae (which is weakly sclerotized in
C. rejecta
and
C. yao
sp. n.
; whereas in
C. cornutissima
sp. n.
the wrinkles are also heavily sclerotized, but thinner and longer), the clearly separated corpus and appendix bursae (usually fused, forming a single, unified sack of the corpus and appendix bursae in the other related taxa) and the presence of a small, button-like signum bursae which is also present in
C. cornutissima
sp. n
.
In addition,
C. occidentalis
has a dentate, band-like sclerotization at the base of the appendix bursae (which is absent in other species), and a large, globular, heavily sclerotized and rugose appendix bursae (the appendix bursae is also heavily sclerotized in
C. cornutissima
sp. n.
, but is conspicuously elongate with a wrinkled area only on the posterior wall of the basal section).
Distribution
.
Sierra Leone
(
Hampson 1900
, as
rejecta
),
Guinea
,
Liberia
,
Togo
,
Cameroon
, northern
Angola
and north-western
Zambia
.
Etymology
. In Latin, ‘occidentalis’ means ‘western’. The specific epithet refers to the species’ West African distribution.