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Mayfly phylogeny was further studied using morphological and molecular analyses by Ogden and others in 2009. They found that the Asian genus Siphluriscus was sister to all other mayflies. Some existing lineages such as Ephemeroidea, and families such as Ameletopsidae, were found not to be monophyletic, through convergence among nymphal features ...
Insects (from Latin insectum) are hexapod invertebrates of the class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous ...
However, recent genetic evidence strongly suggests that they evolved directly from 'true' cockroaches, and many authors now place them as an "epifamily" of Blattodea. [15] This evidence supported a hypothesis suggested in 1934 that termites are closely related to the wood-eating cockroaches (genus Cryptocercus ).
The infraorder name Isoptera is derived from the Greek words iso (equal) and ptera (winged), which refers to the nearly equal size of the fore and hind wings. [15] " Termite" derives from the Latin and Late Latin word termes ("woodworm, white ant"), altered by the influence of Latin terere ("to rub, wear, erode") from the earlier word tarmes.
N. kronaueri was observed using this transport mechanism on different classes of worker ant when moving in a night-time emigration column; in almost all cases (>95%), specimens were found toward the end of this column where ant numbers were lower and no ant brood was being carried. [4] Once attached, the beetles appear to mimic the ants' abdomens.
The heaviest of this widespread, varied complex of insects is the Little Barrier Island giant weta, Deinacrida heteracantha, of New Zealand; one specimen weighed 71 g (2.5 oz) and measured nearly 10 cm (3.9 in), [2] giving it one of the largest insect weights ever known. These heavyweight insects can be over 9 cm (3.5 in) long. [8]
[32] [52] Deserticolous millipedes, species evolved to live in the desert, like Orthoporus ornatus, may show adaptations like a waxy epicuticle and the ability of water uptake from unsaturated air. [53] Some species can survive freshwater floods and live submerged underwater for up to 11 months.
The cloaca evolved secondarily, as most mammals have lost this feature, and may reduce the area vulnerable to infection in dirty water. The beaver's intestine is six times longer than its body, and the caecum is double the volume of its stomach. [35] Microorganisms in the caecum allow them to process around 30 percent of the cellulose they eat ...