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Ctenophora (fly)
''Ctenophora'' is a genus of true crane flies. The species are large (about 20 mm long, with 25-mm wingspans), shiny black craneflies with large yellow, orange, or red markings to mimic wasps. Males have comb-like antennae. The larvae are saproxylic. The species are confined to old deciduous forests, orchards, and other habitats with continuity of the presence of dying and fallen trees. ''Ctenophora'' species are important bioindicators. ''Ctenophora'' is distinguished from related genera (''Dictenidia'' Brulle, ''Phoroctenia'' Coquillett) by these characteristic combinations. The segments of the antennae of the males have two pairs of outgrowths, the lower pair longer than upper pair. The antennae of the female are distinctly 13-segmented, and often indistinctly serrated. The sides of the mesothorax bear long bristles. Sternite 8 of the female is without dentate protuberances. Species *Subgenus '' Cnemoncosis'' Enderlein, 1921 **'' C. fastuosa'' Loew, 1871 **'' C. fe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ctenophora Pectinicornis
Ctenophora (; ctenophore ; ) comprise a phylum of marine invertebrates, commonly known as comb jellies, that inhabit sea waters worldwide. They are notable for the groups of cilia they use for swimming (commonly referred to as "combs"), and they are the largest animals to swim with the help of cilia. Depending on the species, adult ctenophores range from a few millimeters to in size. Only 100 to 150 species have been validated, and possibly another 25 have not been fully described and named. The textbook examples are cydippids with egg-shaped bodies and a pair of retractable tentacles fringed with tentilla ("little tentacles") that are covered with colloblasts, sticky cells that capture prey. Their bodies consist of a mass of jelly, with a layer two cells thick on the outside, and another lining the internal cavity. The phylum has a wide range of body forms, including the egg-shaped cydippids with retractable tentacles that capture prey, the flat generally combless platyct ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
