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Moths of the Amazon and Andes
Saffron-bodied Clear-tip
Bertholdia flavidorsata  HAMPSON, 1901

Superfamily - NOCTUOIDEA

Family - EREBIDAE

subfamily - ARCTIINAE

Tribe -

Bertholdia flavidorsata, Villa Rica, Peru  Adrian Hoskins
Introduction
There are about 6000 known species of Arctiinae in the neotropical region. Most are noxious to birds and have aposematic or diematic warning coloration.
There are 21 species in the genus Bertholdia. The moths are characterised by having dark forewings with a large area devoid of scales near the apex. The impression is of a piece of decaying dead leaf that has had the cuticle eaten away by insects to reveal the clear membrane beneath. The majority of Bertholdia species have red abdomens, but in flavidorsata the abdomen is bright saffron yellow.
Habitats
This species occurs in rainforest and cloudforest habitats at elevations between about 200-1800m, on the eastern slopes of the Andes and the upper Amazon basin.
Lifecycle
To be completed.
Adult behaviour

Nocturnal moths are commonly preyed upon by bats, which project a series of ultrasound clicks, and listen to their echoes in order to locate flying moths. Many moths have developed "ears" on their wings or thorax which can alert them to approaching bats, enabling them to take evasive action. Moths in the genus Bertholdia go a stage further - they actively jam the bats "radar" by producing their own ultrasound, by vibrating a tympanal organ located on the metathorax.

 

 

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