Ectropis
| Ectropis | |
|---|---|
 |
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Small Engrailed (E. crepuscularia sensu stricto) Scale in centimeters |
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Lepidoptera |
| Family: | Geometridae |
| Subfamily: | Ennominae |
| Tribe: | Boarmiini |
| Genus: |
Ectropis Hübner, [1825] |
| Type species | |
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Geometra crepuscularia Denis & Schiffermüller, 1775 |
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| Diversity | |
| About 100 species | |
| Synonyms | |
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Boarmia Stephens, 1829 (non Treitschke, 1825: preoccupied) |
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Boarmia Stephens, 1829 (non Treitschke, 1825: preoccupied)
Coenobita Gistl, 1848 (non Latreille, 1829: preoccupied)
Tephrosia Boisduval, 1840
Ectropis is a genus in the geometer moth family (Geometridae). They are mostly paleotropical, but also plentiful in Australia and extend into Asia. Only one species – or cryptic species complex – (The Engrailed/Small Engrailed, E. bistortata/E. crepuscularia) is found in Europe. There are about 100 known species in this genus altogether.
All junior synonyms of Ectropis use G. crepuscularia as type species, and thus, even though this large genus might warrant subgeneric division, no names are presently available. Apart from Tephrosia, established by J.B. Boisduval in 1840, the synonyms are also junior homonyms and consequently completely invalid.
One of them, Coenobita, was proposed by J. Gistl in 1848. Gistl was unaware that J. Hübner had described the genus Ectropis, but he knew of Boisduval's Tephrosia. However, Gistl misread the name of the spider genus Theraphosa (established by C.A. Walckenaer in 1805) as Tephrosia, and thus came to believe that Tephrosia was in need of a new name. He chose Coenobita, which to his misfortune had been given to a genus of hermit crabs by Latreille in 1829 already.
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