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Jumping Performance in Flightless Hawaiian Grasshopper Moths (Xyloryctidae: Thyrocopa spp.)
|Title:||Jumping Performance in Flightless Hawaiian Grasshopper Moths (Xyloryctidae: Thyrocopa spp.)|
|Authors:||Medeiros, Matthew J.|
|Keywords:||Brachyptery, kinematics, Lepidoptera, locomotion, morphology, predation|
|Issue Date:||Dec 2012|
|Publisher:||Hawaiian Entomological Society|
|Citation:||Proceedings of the Hawaiian Entomological Society (2012) 44:55–6|
|Abstract:||Saltatorial locomotion has evolved multiple times in flightless Lepidop-
tera, particularly on oceanic islands and in habitats with high winds. The kinematics
of this behavior are unknown but are clearly relevant to escape performance in
the absence of wings. We investigated jumping in two non-sister species of bra-
chypterous Hawaiian moths (genus Thyrocopa). Moths were collected from the
islands of Maui and Hawaii. Lateral views of jumps were recorded on video and
then digitized. Jump distances of both species averaged about ten body lengths. In
males of Thyrocopa apatela, jump distance was significantly correlated with the
maximum horizontal component of jump velocity. Jumping ability may become
enhanced as a means of evading predators when selection for flight performance
is relaxed under high-wind regimes.
|Rights:||Attribution-NonCommercial-NoDerivs 3.0 United States|
|Appears in Collections:||Volume 44 - December 2012 : Hawaiian Entomological Society|
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