Corresponding author: Virginijus Sruoga (
Academic editor: Mark Metz
A new species,
Sruoga V (2021) A new species of Elachista Treitschke, 1833 (Lepidoptera, Elachistidae, Elachistinae) from China, with identification keys to the Asian species of the
Genus
China is one of the mega-diversity countries of the world (
In the present paper, a new species of the
Species and distribution of the
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Nepal | Male only |
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India | Male only | ||
Indonesia | Female only | ||
Indonesia | The holotype is without abdomen | ||
Thailand | Male only |
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Thailand | Male and female |
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Thailand | Male only |
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Thailand | Male only |
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species Nr. |
Thailand | Described, but not named; female only |
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China | Male only | Present study | |
Japan; Russian Far East | Male and female | ||
Japan; Russian Far East | Male and female | ||
Japan; Russian Far East | Male and female | ||
New Guinea | Male only | ||
Australia | Male and female | ||
New Guinea | Male only | ||
USA | Male and female | ||
USA | Male and female | ||
USA | Male and female |
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USA | Female only |
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Canada; USA | Male and female |
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Cuba; Ecuador; Peru; USA | Male and female | ||
USA | Male and female |
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USA | Female only |
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Ecuador | Female only |
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Asian species of the group are still poorly known, but recent discoveries of four new species from Thailand (
Adult specimens were examined externally using MBS-10 and Euromex Stereo Blue stereomicroscopes. The forewing length was measured along the costa from wing base to the apex of the terminal fringe scales. For a wingspan, the forewing length was doubled and thorax width added. The width of the head was measured between the inner edges of the antennal bases. Genitalia were prepared following the standard method described by
[males of
1 | Valva distally bilobed ( |
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– | Valva distally not bilobed ( |
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2 | Valva distally with long, strongly sclerotised spine ( |
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– | Valva distally without long, strongly sclerotised spine ( |
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3 | Spine of valva strongly curved, S-shaped ( |
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– | Spine of valva straight ( |
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4 | Digitate process short, as long as wide at base, triangular, devoid of setae ( |
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– | Digitate process long, more than 6 times longer than wide, apically with few setae ( |
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5 | Digitate process about twice shorter than spine of valva ( |
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– | Digitate process as long as spine of valva ( |
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6 | Digitate process strongly dilated apically; spinose knob of gnathos indentated ( |
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– | Digitate process not dilated apically; spinose knob of gnathos not indentated ( |
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7 | Digitate process more than ten times as long as wide ( |
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– | Digitate process about three times as long as wide (this paper, Fig. |
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8 | Digitate process absent ( |
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– | Digitate process present ( |
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9 | Costa of valva with hump at 1/3 from the base; phallus as long as valva ( |
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– | Costa of valva with hump at 2/3 from the base; phallus 4/5 length of valva ( |
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[females of
1 | Corpus bursae without signum ( |
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– | Corpus bursae with signum ( |
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2 | Signum boomerang-shaped, forming an angle of about 120 degrees ( |
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– | Signum not boomerang-shaped, straight or weakly curved, forming an angle less than 40 degrees ( |
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3 | Antrum cup-shaped, anteriorly abruptly narrowing into ductus bursae ( |
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– | Antrum gradually narrowing towards ductus bursae ( |
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4 | Apophysis anterioris 3/5–2/3 as long as apophysis posterioris; antrum with dense internal spines ( |
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– | Apophysis anterioris twice shorter than apophysis posterioris; antrum without internal spines ( |
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5 | Colliculum width about 0.2 times width of ostium bursae; corpus bursae with internal spines ( |
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– | Colliculum width about 0.8 times width of ostium bursae; corpus bursae without internal spines ( |
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(Figs
Unknown.
Based on the specimens available, adults fly in September.
So far, this species is known only from east-central China.
The new species is named in honour of Ole Karsholt (Copenhagen, Denmark) who collected the type specimens.
The phallus of the holotype is slightly distorted during slide mounting and, therefore, looks somewhat skewed in Fig.
I am greatly indebted to Ole Karsholt (Copenhagen, Denmark) and Lauri Kaila (Helsinki, Finland) for providing the specimens for this study. The comments of anonymous reviewers are also appreciated.