| vibrational signalling in a gondwanan relict insect (hemiptera: coleorrhyncha: peloridiidae). | ancient, long-extinct floras and faunas can be reassembled through fossils and phylogenetics, and even palaeo-environments can be reconstructed with the aid of palaeoclimatology. however, very little is known about the sound-scape of the past. of what kind were the first biologically meaningful sounds and vibrations ever emitted and perceived? the earliest signals in the history of life were probably produced by arthropods making use of the mechanical properties of their exoskeleton. here, we re ... | 2006 | 17148367 |
| jumping behaviour in a gondwanan relict insect (hemiptera: coleorrhyncha: peloridiidae). | jumping by a relict insect, hackeriella veitchi (hacker 1932), belonging to the ancient coleorrhynchan line that diverged from other hemiptera in the late permian, was analysed from high-speed images captured at rates of 2000 s(-1) and from its anatomy. this 3 mm long, flightless insect weighs up to 1.4 mg and can jump by rapid movements of the hind legs that accelerate the body in 1.5 ms to a take-off velocity of 1.5 m s(-1). this performance requires an energy expenditure of 1.1 microj and a p ... | 2007 | 17766309 |
| the cephalic morphology of the gondwanan key taxon hackeriella (coleorrhyncha, hemiptera). | external and internal head structures of coleorrhyncha, a key-taxon within the hemiptera, are described in detail and documented using modern techniques. the main focus is on hackeriella veitchi, but two additional representatives of the gondwanan relict group were also examined, and also head structures of enicocephalidae, a member of a potentially basal heteropteran lineage. features were compared to those documented in literature for the sternorrhyncha, auchenorrhyncha, and heteroptera. coleo ... | 2013 | 23583344 |