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Aletopauropus
''Aletopauropus'' is a genus of pauropods in the family Brachypauropodidae. This genus includes only two species: the type species, '' A. lentus'', which is found in California, and a second species, '' A. tanakai'', which is found in Japan. This genus is notable as one of only four genera of pauropods in which adults have only eight pairs of legs rather than the nine leg pairs usually found in adults in the order Tetramerocerata. Before the discovery of ''Aletopauropus'', adult pauropods were described as having only nine or (rarely) ten pairs of legs. Discovery and distribution The genus ''Aletopauropus'' and its type species ''A. lentus'' were first described in 1948 by the zoologists John W. MacSwain and Urless N. Lanham of the University of California at Berkeley. MacSwain and Lanham based their descriptions on twelve specimens that MacSwain collected in 1947. These specimens include a male holotype, a female allotype, seven paratypes (one male and six females), and thre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brachypauropodidae
''Brachypauropodidae'' is a family of pauropods. This family has a nearly worldwide distribution. Pauropods in this family are found on all continents except South America and Antarctica. Description Pauropods in this family feature an entire first tergite, but at least the next two tergites are each divided into four to six sclerites. The pygidial sternum has two or three pairs of setae In biology, setae (; seta ; ) are any of a number of different bristle- or hair-like structures on living organisms. Animal setae Protostomes Depending partly on their form and function, protostome setae may be called macrotrichia, chaetae .... Like most adult pauropods in the order Tetramerocerata, most adults in this family have nine pairs of legs, but adults in two genera, '' Aletopauropus'' and '' Zygopauropus'', have only eight pairs of legs. All legs have five segments. Genera This family includes 33 species distributed among the following seven genera: *'' Aletopauropus'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pauropoda
Pauropoda is a class of small, pale, millipede-like arthropods in the subphylum Myriapoda. More than 900 species in twelve families are found worldwide, living in soil and leaf mold. Pauropods look like centipedes or millipedes and may be a sister group of the latter, but a close relationship with Symphyla has also been posited. The name Pauropoda derives from the Greek ''pauros'' (meaning "small" or "few") and ''pous'', genitive ''podos'' (meaning "foot"), because most species in this class have only nine pairs of legs as adults, a smaller number than those found among adults in any other class of myriapods. Anatomy Pauropods are soft, cylindrical animals with bodies measuring only 0.3 to 2 mm in length. They have neither eyes nor hearts, although they do have sensory organs which can detect light. The body segments have ventral tracheal/spiracular pouches forming apodemes similar to those in millipedes and Symphyla, although the trachea usually connected to these structures ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tetramerocerata
Tetramerocerata is an order of pauropods containing 11 families and more than 900 species. This order was created in 1950 to distinguish these pauropods from those in the newly discovered genus '' Millotauropus'', which was found to have such distinctive features as to warrant placement in a separate order ( Hexamerocerata) created to contain that genus. The order Tetramerocerata includes the vast majority of pauropod species, as there are only eight species in the order Hexamerocerata, which remains the only other order in the class Pauropoda. Description Adult pauropods in the order Tetramerocerata feature antennae that have four stalk segments and are not telescopic, whereas species in the order Hexamerocerata have strongly telescopic antennae with six stalk segments. Two antennal branches emerge from the distal end of the fourth segment in Tetramerocerata, one dorsal and one ventral; in Hexamerocerata, however, the dorsal branch emerges from the distal end of the fifth s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seta
In biology, setae (; seta ; ) are any of a number of different bristle- or hair-like structures on living organisms. Animal setae Protostomes Depending partly on their form and function, protostome setae may be called macrotrichia, chaetae, Scale (insect anatomy), scales, or Common name, informally, hairs. The setal membrane is not Cuticle, cuticularized, so movement is possible. Annelid setae are stiff bristles present on the body. They allow earthworms and their relatives to attach to the surface and prevent backsliding during peristaltic motion. These hairs make it difficult to pull a worm straight from the ground. Setae in oligochaetes (the group including earthworms) are largely composed of chitin. They are classified according to the limb to which they are attached; for instance, notosetae are attached to notopodia; neurosetae to neuropodia. The setae on polychaete worms are referred to as chaeta due to their differing morphology. Crustaceans have mechano- and chemos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yamanashi Prefecture
is a prefecture of Japan located in the Chūbu region of Honshu. Yamanashi Prefecture has a population of 787,592 (1 February 2025) and has a geographic area of 4,465 km2 (1,724 sq mi). Yamanashi Prefecture borders Saitama Prefecture to the northeast, Nagano Prefecture to the northwest, Shizuoka Prefecture to the southwest, Kanagawa Prefecture to the southeast, and Tokyo to the east. Kōfu is the capital and largest city of Yamanashi Prefecture, with other major cities including Kai, Minamiarupusu, and Fuefuki. Yamanashi Prefecture is one of only eight landlocked prefectures, and the majority of the population lives in the central Kōfu Basin surrounded by the Akaishi Mountains, with 27% of its total land area being designated as Natural Parks. Yamanashi Prefecture is home to many of the highest mountains in Japan, and Mount Fuji, the tallest mountain in Japan and cultural icon of the country, is partially located in Yamanashi Prefecture on the border with Shizuoka Pref ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chiba Prefecture
is a Prefectures of Japan, prefecture of Japan located in the Kantō region of Honshu. Chiba Prefecture has a population of 6,278,060 (1 June 2019) and has a geographic area of . Chiba Prefecture borders Ibaraki Prefecture to the north, Saitama Prefecture to the northwest, and Tokyo to the west. Chiba (city), Chiba is the capital and largest city of Chiba Prefecture, with other major cities including Funabashi, Matsudo, Ichikawa, Chiba, Ichikawa and Kashiwa. Chiba Prefecture is located on Japan's eastern Pacific Ocean, Pacific coast to the east of Tokyo, and is part of the Greater Tokyo Area, the most populous metropolitan area in the world. Chiba Prefecture largely consists of the Bōsō Peninsula, which encloses the eastern side of Tokyo Bay and separates it from Kanagawa Prefecture. Chiba Prefecture is home to Narita International Airport, the Tokyo Disney Resort, and the Keiyō Industrial Zone. Etymology The name of Chiba Prefecture in Japanese is formed from two kanji char ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saitama Prefecture
is a Landlocked country, landlocked Prefectures of Japan, prefecture of Japan located in the Kantō region of Honshu. Saitama Prefecture has a population of 7,338,536 (January 1, 2020) and has a geographic area of 3,797 Square kilometre, km2 (1,466 Square mile, sq mi). Saitama Prefecture borders Tochigi Prefecture and Gunma Prefecture to the north, Nagano Prefecture to the west, Yamanashi Prefecture to the southwest, Tokyo to the south, Chiba Prefecture to the southeast, and Ibaraki Prefecture to the northeast. Saitama, Saitama, Saitama is the capital and largest city of Saitama Prefecture, with other major cities including Kawaguchi, Saitama, Kawaguchi, Kawagoe, Saitama, Kawagoe, and Tokorozawa, Saitama, Tokorozawa. History of Kujiki According to ''Sendai Kuji Hongi'' (), Chichibu was one of 137 provinces during the reign of Emperor Sujin. Chichibu Province was in western Saitama. The area that would become Saitama Prefecture in the 19th century is part of Musashi Provinc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alameda County, California
Alameda County ( ) is a List of counties in California, county located in the U.S. state of California. As of the 2020 United States census, 2020 census, the population was 1,682,353, making it the 7th-most populous county in the state and List of the most populous counties in the United States, 21st most populous nationally. The county seat is Oakland, California, Oakland. Alameda County is in the San Francisco Bay Area, occupying much of the East Bay (San Francisco Bay Area), East Bay region. The Spanish language, Spanish word ''alameda'' means either "a grove of poplars...or a tree lined street". The name was originally used to describe the Arroyo de la Alameda; the willow and sycamore trees along the banks of the river reminded the early Spanish explorers of a road lined with trees. Although a strict translation to English might be "Poplar Grove Creek", the name of the principal stream that flows through the county is now simply "Alameda Creek". Alameda County is part of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Honshu
, historically known as , is the largest of the four main islands of Japan. It lies between the Pacific Ocean (east) and the Sea of Japan (west). It is the list of islands by area, seventh-largest island in the world, and the list of islands by population, second-most populous after the list of islands of Indonesia, Indonesian island of Java. Honshu had a population of 104 million , constituting 81.3% of the entire population of Japan, and mostly concentrated in the coastal areas and plains. Approximately 30% of the total population resides in the Greater Tokyo Area on the Kantō Plain. As the historical center of Japanese cultural and political power, the island includes several past Japanese capitals, including Kyoto, Kyōto, Nara (city), Nara, and Kamakura. Much of the island's southern shore forms part of the Taiheiyō Belt, a megalopolis that spans several of the Japanese islands. Honshu also contains Japan's highest mountain, Mount Fuji, and its largest lake, Lake Biwa. Mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ibaraki Prefecture
is a Prefectures of Japan, prefecture of Japan located in the Kantō region of Honshu. Ibaraki Prefecture has a population of 2,828,086 (1 July 2023) and has a geographic area of . Ibaraki Prefecture borders Fukushima Prefecture to the north, Tochigi Prefecture to the northwest, Saitama Prefecture to the southwest, Chiba Prefecture to the south, and the Pacific Ocean to the east. Mito, Ibaraki, Mito, the capital, is the largest city in Ibaraki Prefecture. Other major cities include Tsukuba, Ibaraki, Tsukuba, Hitachi, Ibaraki, Hitachi, and Hitachinaka, Ibaraki, Hitachinaka. Ibaraki Prefecture is located on Japan's eastern Pacific coast to the northeast of Tokyo, and is part of the Greater Tokyo Area, the most populous metropolitan area in the world. Ibaraki Prefecture features Lake Kasumigaura, the second-largest lake in Japan; the Tone River, Japan's second-longest river and largest drainage basin; and Mount Tsukuba, one of the most famous mountains in Japan. Ibaraki Prefectur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
