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Craspedosomatidea
Chordeumatida (from the Greek word for "sausage") is a large order (biology), order of millipedes containing more than 1,400 species. Also known as sausage millipedes, they are found nearly worldwide. Chordeumatida is the largest order in the Order (biology), superorder Nematophora, a group also known as spinning millipedes because their Telson, telsons feature spinnerets used to build nests of silk. These millipedes produce this silk to create chambers in which to molt or to lay their eggs. Description Chordeumatidans take on a wide variety of forms, including some that are cylindrical and others that are flat-backed. Most species have 26 to 32 body segments (including the telson) behind the head, with the number usually fixed within species. These millipedes range in length from 3.5 mm to 42 mm, although most species are 10 mm to 25 mm long. They are usually drab in color, ranging from various shades of brown to unpigmented, but some feature distinct patterns. Species in this ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heterochordeumatidea
Chordeumatida (from the Greek word for "sausage") is a large order of millipedes containing more than 1,400 species. Also known as sausage millipedes, they are found nearly worldwide. Chordeumatida is the largest order in the superorder Nematophora, a group also known as spinning millipedes because their telsons feature spinnerets used to build nests of silk. These millipedes produce this silk to create chambers in which to molt or to lay their eggs. Description Chordeumatidans take on a wide variety of forms, including some that are cylindrical and others that are flat-backed. Most species have 26 to 32 body segments (including the telson) behind the head, with the number usually fixed within species. These millipedes range in length from 3.5 mm to 42 mm, although most species are 10 mm to 25 mm long. They are usually drab in color, ranging from various shades of brown to unpigmented, but some feature distinct patterns. Species in this order share a set of features that di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gonopod
Gonopods are specialized appendages of various arthropods used in reproduction or egg-laying. In males, they facilitate the transfer of sperm from male to female during mating, and thus are a type of intromittent organ. In crustaceans and millipedes, gonopods are modified arthropod leg, walking or swimming legs. Gonopods may be highly decorated with elaborate structures which may play roles in sperm competition, and can be used to differentiate and identify closely related species. Gonopods generally occur in one or more pairs, as opposed to the single (un-paired) reproductive organs such as the aedeagus of insects or the Opiliones penis, penis of harvestmen. Insects In insects, gonopods are appendages of the genital segment that may be used in insemination, or that comprise the egg-laying apparatus. Crustaceans In male decapoda, decapod crustaceans, gonopods are modified swimming appendages (pleopods). The anterior two pair of pleopods in males are modified for sperm transferr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xystrosoma Santllorence
''Xystrosoma santllorence'' is a species of millipede in the family Chamaesomatidae. This millipede is notable as one of only a few species in the order Chordeumatida with only 26 segments in adults (counting the collum as the first segment and the telson as the last), four fewer than the 30 segments typically found in adults this order. This species is found in Spain. Discovery, distribution, and habitat This species was first described in 2018 by the biologists Antoni Serra and Jean-Paul Mauriès. They based the original description of this species on a large sample of specimens, including a male holotype, a female allotype, and 65 other adult specimens (35 females and 30 males). This sample also includes 30 preadults (20 females and 10 males), in the penultimate stage of development, and 30 juveniles (including 11 females and one male) in the four preceding stages of development. Most of the type material is deposited at the University of Barcelona, but 15 paratypes ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xystrosoma
''Xystrosoma'' is a genus of millipede in the family Chamaesomatidae. The French zoologist Henri Ribaut first described this genus in 1927 to contain five species newly discovered in France, including the type species '' X. tectosagum''. This genus now includes ten species. Distribution Most species in this genus are found in the French Pyrenees. Three species in this genus are found in northern Spain: two species found in the autonomous community of Catalonia ('' X. coiffati'' and '' X. santllorence'') and one species found in the Basque autonomous community ('' X. vasconicum''). One species in this genus is found in northern Portugal ('' X. lusitanicum''). Description Adult millipedes in this genus can have 26, 28, or 30 segments (counting the collum as the first segment and the telson as the last). This genus includes three species notable for featuring an unusual number of segments: The Spanish species ''X. santllorence'' is one of only a few species in the order Cho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chamaesoma
''Chamaesoma'' is a monotypic genus of millipede in the family Chamaesomatidae, and ''Chamaesoma broelemanni'' is the only species in this genus. This millipede is notable as one of only a few species in the order Chordeumatida with only 26 segments in adults (counting the collum as the first segment and the telson as the last), four fewer segments than typically found in adults this order. This species is found in France and Luxembourg. Discovery The genus ''Chamaesoma'' and its only species were first described by the German zoologist Karl W. Verhoeff in 1913. He based the original description of this genus and this species on 71 specimens (50 females and 21 males) found by the French zoologists Henri Brölemann and Henri Ribaut under wet leaf litter near the commune of Saint-Béat in the department of Haute-Garonne in the Pyrenees in France. These type specimens are deposited in the Muséum National d’Histoire Naturelle in Paris. Distribution and habitat This ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Millipede
Millipedes (originating from the Latin , "thousand", and , "foot") are a group of arthropods that are characterised by having two pairs of jointed legs on most body segments; they are known scientifically as the class Diplopoda, the name derived from this feature. Each double-legged segment is a result of two single segments fused together. Most millipedes have very elongated cylindrical or flattened bodies with more than 20 segments, while pill millipedes are shorter and can roll into a tight ball. Although the name "millipede" derives from Latin for "thousand feet", no species was known to have 1,000 or more until the discovery in 2020 of '' Eumillipes persephone'', which can have over 1,300 legs. There are approximately 12,000 named species classified into 16 orders and around 140 families, making Diplopoda the largest class of myriapods, an arthropod group which also includes centipedes and other multi-legged creatures. Most millipedes are slow-moving detritivores, eat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peterjohnsiidae
Peterjohnsiidae is a small family of millipedes belonging to the order Chordeumatida. The family was first described in 1987 by Jean-Paul Mauriès. These millipedes range from 3 mm to 8 mm in length and are found in Australia. Species in this family exhibit sexual dimorphism Sexual dimorphism is the condition where sexes of the same species exhibit different Morphology (biology), morphological characteristics, including characteristics not directly involved in reproduction. The condition occurs in most dioecy, di ... in segment number: adult males have 30 segments, but adult females have 32 segments (counting the collum as the first segment and the telson as the last). In adult males in this family, the gonopod complex involves three leg pairs (pairs 8 through 10) rather than just the two (pairs 8 and 9) usually modified into gonopods in this order. Genera: * '' Peterjohnsia'' Mauriès, 1987 References {{Taxonbar, from=Q21065054 Chordeumatida Millipede families [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Speophilosomatidae
Speophilosomatidae is a family of millipedes belonging to the order Chordeumatida. These millipedes are found in Japan and range from 4 mm to 6 mm in length. Adult millipedes in this family are notable for being among the few in this order with only 26 segments (counting the collum, the telson, and the segments in between) instead of the 30 usually found in chordeumatidans. The adult males in this family are also notable for involving three leg pairs (pairs 7 through 9) in the gonopod Gonopods are specialized appendages of various arthropods used in reproduction or egg-laying. In males, they facilitate the transfer of sperm from male to female during mating, and thus are a type of intromittent organ. In crustaceans and millipe ... complex rather than the two pairs (pairs 8 and 9) typically modified into gonopods in this order. Genera: * '' Speophilosoma'' Takakuwa, 1949 References {{Taxonbar, from=Q21064964 Chordeumatida Millipede families ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buotidae
Buotidae is a family of millipedes belonging to the order Chordeumatida. This family contains a single species, ''Buotus carolinus'', which exhibits sexual dimorphism Sexual dimorphism is the condition where sexes of the same species exhibit different Morphology (biology), morphological characteristics, including characteristics not directly involved in reproduction. The condition occurs in most dioecy, di ... in segment number: the adult female has 28 segments, but the adult male has only 26, both fewer than the 30 usually found in this order (counting the collum as the first segment and the telson as the last). These millipedes are very small (no more than 4 mm in length) and have been found in the mountains of Virginia, West Virginia, and North Carolina. Genera: * '' Buotus'' Chamberlin, 1940 References {{Taxonbar, from=Q21065055 Chordeumatida Millipede families ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
