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Opilioacaridae
Opilioacaridae is the sole family of mites in the order Opilioacarida, made up of about 13 genera. The mites of this family are rare, large (1.5 to 2.5 mm) mites, and are widely considered primitive, as they retain six pairs of eyes, and abdominal segmentation. They have historically been considered separate from other mites belonging to Acariformes and Parasitiformes, but are now generally considered a subgroup of Parasitiformes based on molecular phylogenetics. The first member of the Opilioacarida to be discovered was the Algerian species '' Opilioacarus segmentatus'', which was described by Carl Johannes With in 1902, followed by the Sicilian '' Eucarus italicus'' and '' Eucarus arabicus'' from Aden, both in 1904. Two fossil specimens are known, one of which was discovered in Baltic amber from the Eocene, while the other one was discovered in the Burmese amber from the Late Cretaceous The Late Cretaceous (100.5–66 Ma) is the younger of two epochs into which the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opilioacarus Segmentatus
''Opilioacarus'' is a genus of opilioacarid mites native to the Mediterranean region. The following species are recognised: *'' Opilioacarus baeticus'' Moraza et al. 2022, Iberian Peninsula *'' Opilioacarus brignolii'' Araújo & di Palma, 2018, Southern Italy, Sardinia *'' Opilioacarus italicus'' (With, 1904) Sicily *'' Opilioacarus segmentatus'' With, 1902 Greece, Algeria, Uzbekistan? (possibly in need of splitting) *''Opilioacarus aenigmus'' Dunlop ''et al.'' 2004 Baltic amber, Eocene *''?Opilioacarus groehni'' Dunlop & Bernardi, 2014 Burmese amber, Myanmar, Late Cretaceous (Cenomanian The Cenomanian is, in the ICS' geological timescale, the oldest or earliest age of the Late Cretaceous Epoch or the lowest stage of the Upper Cretaceous Series. An age is a unit of geochronology; it is a unit of time; the stage is a unit in the s ...) (tentatively placed in this genus) The following species have been transferred elsewhere: *'' Opilioacarus bajacalifornicus'' Vázquez & Klompen, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opilioacarus
''Opilioacarus'' is a genus of opilioacarid mites native to the Mediterranean region. The following species are recognised: *'' Opilioacarus baeticus'' Moraza et al. 2022, Iberian Peninsula *'' Opilioacarus brignolii'' Araújo & di Palma, 2018, Southern Italy, Sardinia *'' Opilioacarus italicus'' (With, 1904) Sicily *'' Opilioacarus segmentatus'' With, 1902 Greece, Algeria, Uzbekistan? (possibly in need of splitting) *''Opilioacarus aenigmus'' Dunlop ''et al.'' 2004 Baltic amber, Eocene *''?Opilioacarus groehni'' Dunlop & Bernardi, 2014 Burmese amber, Myanmar, Late Cretaceous (Cenomanian The Cenomanian is, in the ICS' geological timescale, the oldest or earliest age of the Late Cretaceous Epoch or the lowest stage of the Upper Cretaceous Series. An age is a unit of geochronology; it is a unit of time; the stage is a unit in the s ...) (tentatively placed in this genus) The following species have been transferred elsewhere: *'' Opilioacarus bajacalifornicus'' Vázquez & Klompen, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parasitiformes
Parasitiformes are a superorder of Arachnids, constituting one of the two major groups of mites, alongside Acariformes. Parasitiformes has, at times, been classified at the rank of order or suborder. It is uncertain whether Parasitiformes and Acariformes are closely related, and in many analyses they are recovered more closely related to other arachnids. Amongst the best known members of the group are the ticks, though the Mesostigmata is by far the most diverse group with over 8,000 described species, including economically important species such as the varroa mite. Description Taxonomy * Holothyrida - small group of scavenging mites native to former Gondwana landmasses * Ixodida – ticks * Mesostigmata – a large order of predatory and parasitic mites * Opilioacarida – a small group of large, long-legged segmented mites. Many species are parasitic (most famous of which are ticks), but not all. For example, about half of the 10,000 known species in the suborder Mesostig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burmese Amber
Burmese amber, also known as Burmite or Kachin amber, is amber from the Hukawng Valley in northern Myanmar. The amber is dated to around 100 million years ago, during the latest Albian to earliest Cenomanian ages of the mid-Cretaceous period. The amber is of significant palaeontological interest due to the diversity of flora and fauna contained as inclusions, particularly arthropods including insects and arachnids but also birds, lizards, snakes, frogs and fragmentary dinosaur remains. The amber has been known and commercially exploited since the first century AD, and has been known to science since the mid-nineteenth century. Research on the deposit has attracted controversy due to its alleged role in funding internal conflict in Myanmar and hazardous working conditions in the mines where it is collected. Geological context, depositional environment and age The amber is found within the Hukawng Basin, a large Cretaceous-Cenozoic sedimentary basin within northern Myanmar. The s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Johannes With
Carl Johannes With (December 11, 1877 – June 16, 1923) was a Danish doctor and arachnologist, specialising in pseudoscorpions and mites. With was born in Lemvig to Nicolai Rasmus With and his wife Rasmine Sophie Dorothea With, but was orphaned by the age of five. With married Inge Kiørboe on July 1, 1909, and together they had three children. With died in 1923 in Skibstrup, in the parish of Hellebæk (Helsingør Municipality), while still working on a dissertation on lupus. Zoological career After studying at the University of Oxford in 1896, With studied natural history and geography, and in 1904, undertook a research trip to England and in particular, the collections of the British Museum. In 1905, he won the ' (Schibbye Prize) for his work on Opilioacariformes. Medical career With was not confident that zoology could provide a secure future, so he studied medicine, including time at the ' in Paris. He took part in the Franco–Danish leprosy expedition to the Danish West ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cenomanian
The Cenomanian is, in the ICS' geological timescale, the oldest or earliest age of the Late Cretaceous Epoch or the lowest stage of the Upper Cretaceous Series. An age is a unit of geochronology; it is a unit of time; the stage is a unit in the stratigraphic column deposited during the corresponding age. Both age and stage bear the same name. As a unit of geologic time measure, the Cenomanian Age spans the time between 100.5 and 93.9 million years ago (Mya). In the geologic timescale, it is preceded by the Albian and is followed by the Turonian. The Upper Cenomanian starts around at 95 Mya. The Cenomanian is coeval with the Woodbinian of the regional timescale of the Gulf of Mexico and the early part of the Eaglefordian of the regional timescale of the East Coast of the United States. At the end of the Cenomanian, an anoxic event took place, called the Cenomanian-Turonian boundary event or the "Bonarelli event", that is associated with a minor extinction event for marine spec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leaf-litter
Plant litter (also leaf litter, tree litter, soil litter, litterfall or duff) is dead plant material (such as leaves, bark, needles, twigs, and cladodes) that have fallen to the ground. This detritus or dead organic material and its constituent nutrients are added to the top layer of soil, commonly known as the litter layer or O horizon ("O" for "organic"). Litter is an important factor in ecosystem dynamics, as it is indicative of ecological productivity and may be useful in predicting regional nutrient cycling and soil fertility. Characteristics and variability Litterfall is characterized as fresh, undecomposed, and easily recognizable (by species and type) plant debris. This can be anything from leaves, cones, needles, twigs, bark, seeds/nuts, logs, or reproductive organs (e.g. the stamen of flowering plants). Items larger than 2 cm diameter are referred to as coarse litter, while anything smaller is referred to as fine litter or litter. The type of litterfall is m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
