The Elachistidae (Lepidoptera: Gelechioidea) of Caucasus, with description of three new species
Author
Sruoga, Virginijus
Author
Sinev, Sergey Yu.
Author
Rocienė, Agnė
text
Zootaxa
2017
2017-10-25
4338
2
241
262
journal article
31747
10.11646/zootaxa.4338.2.2
16138ece-e897-47f9-a3e7-7bece81dde92
1175-5326
1036093
2B56C761-348D-40AF-8EB9-80FEFB792719
Elachista suffusca
Sruoga & Sinev
,
sp. nov.
(
FIGS 37–49
)
Type material.
HOLOTYPE: ♂, Z.[APADNYI] (WESTERN) KAVKAZ (CAUCASUS), BIOSfERNYI ZAPOVEDNIK (BIOSPHERE RESERVE), DOLINA (VALLEY) REKI (RIVER) URUSHTEN, OKR.[ESNOSTI] (ENVIRONS) LAGER KHOLODNYI, 1730–1750 M,
16.vii.2004
, V. Shchurov leg. Gen. prep. VS453; Paratype: ♀, Krasnodarskii kr.[ai], khr.[ebet] (mountain range) CHERNOGOR’E, 1450 M,
5.VI.1998
, V. SHCHUROV LEG. GEN. PREP. VS452 (ZIN).
Diagnosis.
Elachista suffusca
IS A LARGE, UNICOLOROUS SPECIES, EXTERNALLY MOSTLY SIMILAR TO
E. pigerella
(HERRICH-SCHäffER, 1854) AND
E. tanaella
AARVIK & BERGGREN, 2003
. IT DIffERS fROM
E. pigerella
BY THE NARROWER HINDWINGS AND fROM
E. tanaella
BY THE YELLOWISH HEAD. BOTH
E. pigerella
AND
E. tanaella
HAVE MALE GENITALIA THAT DIffER STRONGLY fROM THOSE Of
E. suffusca
. MALE GENITALIA Of
E. suffusca
MOST CLOSE RESEMBLE THOSE Of
E. maculicerusella
(
BRUAND, 1859
) BUT EXTERNALLY
E. suffusca
DIffERS DISTINCTLY AS BEING UNICOLOROUS BROWNISH GREY. IN fEMALE GENITALIA, IT IS ALSO COMPARABLE TO
E. tanaella
. HOWEVER,
E. suffusca
IS DISTINGUISHABLE MAINLY BY MORE NARROW OSTIUM BURSAE AND SHALLOW ANTRUM, WHICH IS ABRUPTLY TAPERED TO COLLICULUM; THE SIGNUM IS VERY SMALL IN
E. suffusca
, MUCH LARGER IN
E. tanaella
.
FIGURES 37–43.
Elachista suffusca
sp. nov.
, holotype. 37, adult male. Scale bar 1 mm; 38, head, latero-frontal view; 39, general view of male genitalia (phallus removed); 40, phallus. Scale bar 0.1 mm; 41, gnathos; 42, juxta region; 43, distal part of phallus. Gen. prep. VS453.
FIGURES 44–49.
Elachista suffusca
sp. nov.
, paratype. 44, adult female. Scale bar 1 mm; 45, head, frontal view; 46, caudal part of female genitalia; 47, ductus and corpus bursae. Scale bar 0.2 mm; 48, medial part of female genitalia; 49, signum. Gen. prep. VS452.
Male
(
FIGS 37, 38
). FOREWING LENGTH 4.6 MM; WINGSPAN 10.2 MM (N=1). HEAD: FRONS YELLOWISH, BACKGROUND LAYER WITH SOME METALLIC LUSTRE; VERTEX AND NECK TUfT YELLOWISH;
LABIAL PALPUS UPWARDLY CURVED
,
ABOUT 1.5
TIMES
AS
LONG
AS
WIDTH
Of
HEAD
,
YELLOWISH
,
SECOND SEGMENT BROWNISH BELOW
;
ANTENNA BROWNISH GREY
,
WITH VERY SHORT VISIBLE CILIA
ABOUT 1
/5 DIAMETER
Of
SHAfT
. THORAX AND TEGULA BROWNISH GREY. FOREWING BROWNISH GREY; fRINGE SCALES BROWNISH GREY WITH fEW YELLOWISH SCALES ALONG APEX. HINDWING AND ITS fRINGE BROWNISH GREY.
Female
(
FIGS 44, 45
). FOREWING LENGTH 6.1 MM; WINGSPAN 13.2 MM (N=1). SIMILAR TO MALE, BUT fLAGELLUM WEAKLY ANNULATED WITH PALER RINGS AND WITHOUT VISIBLE CILIA.
Male genitalia
(
FIGS 39–43
). UNCUS LOBES SLIGHTLY LONGER THAN WIDE, MEDIAN MARGIN ALMOST STRAIGHT, LATERAL AND DISTAL MARGIN EVENLY CURVED, SEPARATED fROM EACH OTHER BY A WIDE V-SHAPED INCISION. SPINOSE KNOB Of GNATHOS ROUNDED. VALVA NARROW, PARALLEL-SIDED, SOMEWHAT BENT,
BASAL
fOLD Of
COSTA EXTENDED
TO
DISTAL 3
/4
Of
VALVA WHERE
IT
MEETS DISTAL LOBE AND
fORMS
BROAD AND INDISTINCT
HUMP
; SACCULUS MEETING CUCULLUS AT A RIGHT ANGLE. MESIAL MARGIN Of JUXTA LOBES STRAIGHT, MEETING DISTAL MARGIN WITHOUT AN ANGLE, DISTAL MARGIN ROUNDED, WITH A fEW SPARSE SETAE.
DIGITAL PROCESS
ABOUT 1
/3
AS
LONG
AS
VALVA
, NARROW, ALMOST PARALLEL-SIDED, APEX ABRUPTLY EXPANDED, WITH A fEW SPARSE SETAE. VINCULUM GRADUALLY TAPERED INTO BROAD AND SHORT SACCUS, MEDIAN RIDGE INDISTINCT.
PHALLUS
ABOUT 4
/5 LENGTH
Of
VALVA
, STRAIGHT, SLIGHTLY BROADENED BASALLY, OTHERWISE NARROWER, APEX DISTINCTLY BIfURCATE; BASAL OPENING POSTERIORLY PROJECTED.
Female genitalia
(
FIGS 46–49
). PAPILLAE ANALES LONGER THAN WIDE. APOPHYSES POSTERIORES STOUT, APICALLY DILATED,
APOPHYSES
ANTERIORES 1.4
TIMES
AS
LONG
AS
APOPHYSES POSTERIORES
. OSTIUM BURSAE DEEPLY INCISED IN STERNUM 7, NARROW AND U-SHAPED, DORSAL WALL COVERED BY MINUTE SPINES; ANTRUM SMALL, ABRUPTLY TAPERED TOWARDS STRONGLY SCLEROTIZED AND NARROW COLLICULUM. DUCTUS BURSAE MEMBRANOUS, WITH LONGITUDINAL fOLDS, GRADUALLY WIDENED TOWARDS CORPUS BURSAE WITH WHICH IT IS INCEPTED WITHOUT DISTINCT BORDER. CORPUS BURSAE WITHOUT INTERNAL SPINES. SIGNUM VERY SMALL, ELONGATE, WITH A fEW MINUTE SPINES.
Biology.
UNKNOWN.
Flight period.
BASED ON SPECIMENS AVAILABLE, ADULTS fLY IN JUNE AND JULY.
Distribution.
SO fAR THIS SPECIES IS KNOWN ONLY fROM CAUCASUS (
KRASNODAR KRAI
Of
RUSSIA
).
Etymology.
THE SPECIES NAME IS DERIVED fROM LATIN
suffusca
(BROWNISH, DARK) IN REfERENCE TO DARK COLORATION Of MOTH.
Remarks.
THE
HOLOTYPE
IS IN POOR CONDITION; THE fOREWINGS ARE SOMEWHAT RUBBED, THE HEAD IS DISTORTED AND THEREfORE LOOKS fLATTENED IN
FIG. 38
.