Two new Xestia Hübner, 1818 species from China (Lepidoptera, Noctuidae)
Author
Gyulai, P.
H- 3530 Miskolc, Mélyvölgy 13 / A, Hungary. E-mail: gyulainegarai. adrienne @ upcmail. hu
Author
Ronkay, L.
Department of Zoology, Hungarian Natural History Museum, H- 1088 Budapest, Baross u. 13, Hungary.
Author
Saldaitis, A.
Nature Research Centre, Akademijos str. 2, LT- 08412 Vilnius- 21, Lithuania. E-mail: saldrasa @ gmail. com
text
Zootaxa
2013
2013-11-04
3734
1
96
100
journal article
10.11646/zootaxa.3734.1.12
1175-5326
5268855
28CCA1C9-D85D-45F1-B9D5-14A8094F9236
Xestia elisabetha
Gyulai, Ronkay & Saldaitis
sp. n.
(
Figs. 1, 2
,
6–9
)
Type material
.
Holotype
:
Male
,
China
, N-Sichuan, road
Barkam
/
Hong Yuan
,
3400 m
,
32
°
10.353’N
,
102
°
29.692’E
,
23.ix.2011
, leg.
A. Floriani
, coll.
Peter Gyulai
(to be deposited in the
Hungarian Natural History Museum
,
Budapest
,
Hungary
); slide
No. JB
1839m
.
Paratypes
:
2 males
, with the same data as the holotype
,
5 males
,
China
, N-Sichuan, near
Barkam
,
Zhe Gu Shan
pass,
3300 m
, 3155.625’N, 10239.290’E,
21.ix.2011
, leg.
A. Floriani
,
1 male
,
China
, N-Sichuan, near
Moxi
,
3954 m
, 2953.097’N, 10200.459’E,
07.x.2012
, leg.
A. Floriani
; coll.
Alessandro Floriani
(
Milan
,
Italy
).
Slide Nos
: PGy
3060m
, PGy
3064m
, PGy
3065m
, PGy
3555m
.
Diagnosis and description.
Wingspan
29–32 mm
. Morphologically the new species resembles its only known closely allied taxon,
Xestia aplectoides
(Draudt, 1963)
which was described from
Yunnan
. The new species can be separated from this sister taxon by its blackish-dark brown palpi, slightly broader, more unicolorous brownish-grey forewings, and the slight reddish-brown suffusion of the medial field apparent on fresh specimens. By comparison,
X. aplectoides
(
Fig. 3
) has lighter palpi with a white edge and pure grey forewing ground colour with dark greyish (sometimes blackish) suffusion. The transverse lines of
X. elisabetha
(
Figs. 1, 2
) are finer, generally simple and more obsolescent with only the antemedial line clearly visible and the wavy postmedial line less serrated. External diagnostic features are clearly recognizable only in newly emerged specimens so that further genitalic investigation is required for worn individuals. The female is still unknown. The male genitalia (
Figs. 6–9
) are most similar to those of
X. aplectoides
(
Figs. 10, 11
) but with certain conspicuous differences, as follows: the uncus of the new species is much broader and differently shaped distally, being lanceolate and pointed apically; the vinculum is about half as long as in
X. aplectoides
; the juxta is more elongated-triangular dorsally; the valvae are less elongated, having larger flap-like terminal extensions on the ventral side; the vesica is ventrally recurved, ample, with two (basal and subbasal) cornuti fields with numerous sparsely arranged cornuti compared to
X. aplectoides
which has a larger basal cornutus or a short, slightly serrated sclerotised field with 1–2 tiny cornuti.
Bionomics and Distribution.
Known only from the Barkam and Moxi areas in northern
Sichuan Province
on the east edge of the Tibetan plateau. Nine males were collected at lights on cold nights on 21,
23 September 2011
and
7 October 2012
at an elevation of
3300–3950 m
in shrubby, swampy areas. Sympatry with
X. aplectoides
is unknown, but the latter is generally on the wing somewhat later through October in
Yunnan
and West
Sichuan
provinces.
Etymology:
Dedicated to Mrs. Elisabeth Rau (Grafing,
Germany
) for her contributions to entomology.