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Dytiscacaridae
''Dytiscacarus'' is a genus of Trombidiformes, trombidiform mites that are sub-elytral parasites of diving beetles (Dytiscidae). It is in the Monotypic taxon, monotypic Family (biology), family Dytiscacaridae, and comprises three species. It has been recorded from Iran and the United States. Morphology The family has three distinctive features not found in other mites (Autapomorphy, autapomorphies): the infracapitulum has a pair of gnathosomatic neostigmata on its dorsal face, the movable Chelicerae, cheliceral stylets are sheathed and can be deeply retracted into the Cephalothorax, prosoma, and the pretarsi of all legs lack empodia and bear paired claws strongly modified into sclerotized tenent-like structures (to attach to hosts). These features occur in all of the active life stages. Dytiscacaridae are also Sexual dimorphism, sexually dimorphic: females have the fourth pair of legs elongated (possibly for greater mobility), while males have a caudal copulatory capsule. Biol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Raphignathoidea
Raphignathoidea is a superfamily (taxonomy), superfamily of the Acari (mite) order (biology), order Trombidiformes, comprising 1087 species in 62 genera and 12 Family (biology), families. Morphology Adult Raphignathoidea are generally oval or round in shape, with 2 pairs of vertical setae on the prodorsum (rarely 3), 2 pairs of scapular setae (rarely 1 or 3), and eyes and postocular bodies usually present. The second and third leg pairs are separated by a gap except in families Cryptognathidae and Raphignathidae. The legs usually bear tarsal claws at the ends. Females and males look similar except that males are often tapered posteriorly, the first and second pseudanal setae are often reduced, the genital and anal openings are fused, and an aedeagus (male reproductive organ) is present. Life cycle Most Raphignathoidea have five life stages: egg, larva, protonymph, deutonymph and adult. The species ''Agistemus exsertus'' also has a prelarval stage, while the genus ''Raphigna ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dytiscacarus Thermonecti
''Dytiscacarus'' is a genus of trombidiform mites that are sub-elytral parasites of diving beetles (Dytiscidae). It is in the monotypic family Dytiscacaridae, and comprises three species. It has been recorded from Iran and the United States. Morphology The family has three distinctive features not found in other mites (autapomorphies): the infracapitulum has a pair of gnathosomatic neostigmata on its dorsal face, the movable cheliceral stylets are sheathed and can be deeply retracted into the prosoma, and the pretarsi of all legs lack empodia and bear paired claws strongly modified into sclerotized tenent-like structures (to attach to hosts). These features occur in all of the active life stages. Dytiscacaridae are also sexually dimorphic: females have the fourth pair of legs elongated (possibly for greater mobility), while males have a caudal copulatory capsule. Biology Dytiscacaridae spend their life cycle under the elytra of Dytiscidae beetles. The eggs are laid on the i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. Other ways of defining species include their karyotype, DNA sequence, morphology (biology), morphology, behaviour, or ecological niche. In addition, palaeontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. About 14% of these had been described by 2011. All species (except viruses) are given a binomial nomenclature, two-part name, a "binomen". The first part of a binomen is the name of a genus to which the species belongs. The second part is called the specific name (zoology), specific name or the specific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hemolymph
Hemolymph, or haemolymph, is a fluid, similar to the blood in invertebrates, that circulates in the inside of the arthropod's body, remaining in direct contact with the animal's tissues. It is composed of a fluid plasma in which hemolymph cells called hemocytes are dispersed. In addition to hemocytes, the plasma also contains many chemicals. It is the major tissue type of the open circulatory system characteristic of arthropods (for example, arachnids, crustaceans and insects). In addition, some non-arthropods such as mollusks possess a hemolymphatic circulatory system. Oxygen-transport systems were long thought unnecessary in insects, but ancestral and functional hemocyanin has been found in the hemolymph. Insect "blood" generally does not carry hemoglobin, although hemoglobin may be present in the tracheal system instead and play some role in respiration. Method of transport In the grasshopper, the closed portion of the system consists of tubular hearts and an ao ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thermonectus Basillaris
''Thermonectus basillaris'' is a species of diving beetle native to the eastern United States, southern Ontario, Canada, and Cuba Cuba, officially the Republic of Cuba, is an island country, comprising the island of Cuba (largest island), Isla de la Juventud, and List of islands of Cuba, 4,195 islands, islets and cays surrounding the main island. It is located where the .... ''T. basillaris'' is a pioneering species that occurs in temporary ponds and readily fly. Adults are long and wide. References {{Taxonbar, from=Q2186827 Dytiscidae Beetles of North America Beetles described in 1829 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydaticus Pictus
''Hydaticus'' is a genus of predatory water beetle belonging to the family Dytiscidae. ''Hydaticus'' can be found throughout most of the world. There are 150 described species and 12 subspecies in two subgenera in the genus ''Hydaticus''. Subgenus ''Hydaticus'' These seven species are in the subgenus ''Hydaticus'': * '' Hydaticus aruspex'' Clark, 1864 * '' Hydaticus cinctipennis'' Aubé, 1838 * '' Hydaticus continentalis'' J. Balfour-Brown, 1944 * '' Hydaticus piceus'' LeConte, 1863 * '' Hydaticus schelkovnikovi'' Zaitzev, 1913 * '' Hydaticus seminiger'' (De Geer, 1774) * '' Hydaticus transversalis'' (Pontoppidan, 1763) Subgenus ''Prodaticus'' These 143 species are in the subgenus ''Prodaticus'': * ''Hydaticus abyssinicus'' Régimbart, 1905 * '' Hydaticus aequabilis'' Guignot, 1958 * '' Hydaticus aequalis'' Benetti, Gustafson, Hamada & Short, 2020 * '' Hydaticus africanus'' (Rocchi, 1976) * '' Hydaticus agaboides'' Sharp, 1882 * '' Hydaticus amydrus'' Guignot, 1955 * ''Hydaticu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydaticus Bimarginatus
''Hydaticus'' is a genus of predatory water beetle belonging to the family Dytiscidae. ''Hydaticus'' can be found throughout most of the world. There are 150 described species and 12 subspecies in two subgenera in the genus ''Hydaticus''. Subgenus ''Hydaticus'' These seven species are in the subgenus ''Hydaticus'': * '' Hydaticus aruspex'' Clark, 1864 * '' Hydaticus cinctipennis'' Aubé, 1838 * '' Hydaticus continentalis'' J. Balfour-Brown, 1944 * '' Hydaticus piceus'' LeConte, 1863 * '' Hydaticus schelkovnikovi'' Zaitzev, 1913 * '' Hydaticus seminiger'' (De Geer, 1774) * '' Hydaticus transversalis'' (Pontoppidan, 1763) Subgenus '' Prodaticus'' These 143 species are in the subgenus ''Prodaticus'': * '' Hydaticus abyssinicus'' Régimbart, 1905 * '' Hydaticus aequabilis'' Guignot, 1958 * '' Hydaticus aequalis'' Benetti, Gustafson, Hamada & Short, 2020 * '' Hydaticus africanus'' (Rocchi, 1976) * '' Hydaticus agaboides'' Sharp, 1882 * '' Hydaticus amydrus'' Guignot, 1955 * ''Hydat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sexually Transmitted Infection
A sexually transmitted infection (STI), also referred to as a sexually transmitted disease (STD) and the older term venereal disease (VD), is an infection that is Transmission (medicine), spread by Human sexual activity, sexual activity, especially Sexual intercourse, vaginal intercourse, anal sex, oral sex, or sometimes Non-penetrative sex#Manual sex, manual sex. STIs often do not initially cause symptoms, which results in a risk of transmitting them to others. The term ''sexually transmitted infection'' is generally preferred over ''sexually transmitted disease'' or ''venereal disease'', as it includes cases with no Signs and symptoms#Symptomatic, symptomatic disease. Symptoms and signs of STIs may include vaginal discharge, penile discharge, genital ulcers, ulcers on or around the genitals, and pelvic pain. Some STIs can cause infertility. Bacterial STIs include Chlamydia infection, chlamydia, gonorrhea, and syphilis. Viral STIs include genital warts, genital herpes, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heterostigmatina
Heterostigmatina is a grouping of mite Mites are small arachnids (eight-legged arthropods) of two large orders, the Acariformes and the Parasitiformes, which were historically grouped together in the subclass Acari. However, most recent genetic analyses do not recover the two as eac ...s. References Trombidiformes {{Trombidiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elytron
An elytron (; ; : elytra, ) is a modified, hardened forewing of beetles (Coleoptera), though a few of the true bugs (Hemiptera) such as the family Schizopteridae are extremely similar; in true bugs, the forewings are called hemelytra (sometimes alternatively spelled as "hemielytra"), and in most species only the basal half is thickened while the apex is membranous, but when they are entirely thickened the condition is referred to as "coleopteroid". An elytron is sometimes also referred to as a shard. Description The elytra primarily serve as protective wing-cases for the hindwings underneath, which are used for flying. To fly, a beetle typically opens the elytra and then extends the hindwings, flying while still holding the elytra open, though many beetles in the families Scarabaeidae and Buprestidae can fly with the elytra closed (e.g., most Cetoniinae; ). In a number of groups, the elytra are reduced to various degrees, (e.g., the beetle families Staphylinidae and Ripiphorid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
