This is a timeline of aviation history, and a list of more detailed aviation timelines. The text in the diagram are clickable links to articles.
At the end of each Major League Baseball season, the league leaders of various statistical categories are announced. Leading either the American League or the National League in a particular category is referred to as a title.
Digenea is a class of trematodes in the Platyhelminthes phylum, consisting of parasitic flatworms with a syncytial tegument and, usually, two suckers, one ventral and one oral. Adults commonly live within the digestive tract, but occur throughout the organ systems of all classes of vertebrates. Once thought to be related to the Monogenea, it is now recognised that they are closest to the Aspidogastrea and that the Monogenea are more closely allied with the Cestoda. Around 6,000 species have been described to date.
The Drosophilidae are a diverse, cosmopolitan family of flies, which includes species called fruit flies, although they are more accurately referred to as vinegar or pomace flies. Another distantly related family of flies, Tephritidae, are true fruit flies because they are frugivorous, and include apple maggot flies and many pests. The best known species of the Drosophilidae is Drosophila melanogaster, within the genus Drosophila, also called the "fruit fly." Drosophila melanogaster is used extensively for studies concerning genetics, development, physiology, ecology and behaviour. Many fundamental biological mechanisms were discovered first in D. melanogaster. The fruit fly is mostly composed of post-mitotic cells, has a very short lifespan, and shows gradual aging. As in other species, temperature influences the life history of the animal. Several genes have been identified that can be manipulated to extend the lifespan of these insects. Additionally, Drosophila subobscura, also within the genus Drosophila, has been reputed as a model organism for evolutionary-biological studies, along with D. sechellia for the evolution of host specialization on the toxic noni fruit and Scaptomyza flava for the evolution of herbivory and specialist on toxic mustard leaves.
The subfamily Catantopinae is a group of insects classified under family Acrididae. Genera such as Macrotona may sometimes called "spur-throated grasshoppers", but that name is also used for grasshoppers from other subfamilies, including the genus Melanoplus from the Melanoplinae. Indeed, the delimitation of these two subfamilies needs restudy: the Podismini for example are sometimes placed here, sometimes in the Melanoplinae.
Trematodes are parasitic flatworms of the class Trematoda, specifically parasitic flukes with two suckers: one ventral and the other oral. Trematodes are covered by a tegument, that protects the organism from the environment by providing secretory and absorptive functions.
A cercaria is the larval form of the trematode class of parasites. It develops within the germinal cells of the sporocyst or redia. A cercaria has a tapering head with large penetration glands. It may or may not have a long swimming "tail", depending on the species. The motile cercaria finds and settles in a host where it will become either an adult, or a mesocercaria, or a metacercaria, according to species.
AFI's 100 Years...100 Stars is the American Film Institute's list ranking the top 25 female and 25 male greatest screen legends of American film history and is the second list of the AFI 100 Years... series.
Planorbidae, common name the ramshorn snails or ram's horn snails, is a family of air-breathing freshwater snails, aquatic pulmonate gastropod molluscs. Unlike most molluscs, the blood of ram's horn snails contains iron-based hemoglobin instead of copper-based hemocyanin. As a result, planorbids are able to breathe oxygen more efficiently than other molluscs. The presence of hemoglobin gives the body a reddish colour. This is especially apparent in albino animals.
The Nemastomatidae are a family of harvestmen with about 170 described species in 16 recent genera. Several fossil species and genera are known.
Amerila is a genus of moths in the subfamily Arctiinae. A number of species in this genus have a special defence mechanism when they are in their adult stage. When disturbed, they exude a frothy yellow fluid from glands beside the eyes, while making a sizzling noise to ward off their attacker. Similar behaviour has been observed in fertilised females of the North-American moth Utetheisa ornatrix.
Carychium is a genus of very small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Ellobiidae.
Platycheirus is a large genus of hoverflies. They are also called sedgesitters.
Hydroporus is a genus of water beetles native to the Palearctic, the Nearctic, the Near East, and North Africa. It contains the following species:
Henricia is a large genus of slender-armed sea stars belonging to the family Echinasteridae. It contains about fifty species.
Bucephalidae is a family of trematodes that parasitize fish. They lack suckers, having instead a muscular organ called a "rhynchus" at the front end which they use to attach to their hosts. The characteristics of the rhynchus are used to help define the genera of the family. It is one of the largest digenean families, with 25 genera containing hundreds of described species. Bucephalids are cosmopolitan, having been recorded all over the world. They are parasites of fish from freshwater, marine, and brackish water habitat types.
Duvalius is a genus of beetles in the family Carabidae. They are distributed from the Mediterranean area to northwestern China. They typically live in caves and in shallow subterranean spaces. Many species are rare and have very restricted distributions.
