|
Dytiscacarus
''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] |
Dytiscacarus Iranicus
''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 t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dytiscidae
The Dytiscidae – based on the Greek ''dytikos'' (δυτικός), "able to dive" – are the predaceous diving beetles, a family of water beetles. They occur in virtually any freshwater habitat around the world, but a few species live among leaf litter. The adults of most are between long, though much variation is seen between species. The European '' Dytiscus latissimus'' and Brazilian '' Megadytes ducalis'' are the largest, reaching up to and respectively. In contrast, the smallest is likely the Australian '' Limbodessus atypicali'' of subterranean waters, which only is about long. Most are dark brown, blackish, or dark olive in color with golden highlights in some subfamilies. The larvae are commonly known as water tigers due to their voracious appetite. They have short, but sharp mandibles and immediately upon biting, they deliver digestive enzymes into prey to suck their liquefied remains. The family includes more than 4,000 described species in numerous genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can reproduction, produce Fertility, fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology (biology), morphology, behaviour or ecological niche. In addition, paleontologists 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. However, only about 14% of these had been described by 2011. All species (except viruses) are given a binomial nomenclature, two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heterostigmatina
Heterostigmatina is a grouping of mite Mites are small arachnids (eight-legged arthropods). Mites span two large orders of arachnids, the Acariformes and the Parasitiformes, which were historically grouped together in the subclass Acari, but genetic analysis does not show clear evid ...s. References Trombidiformes {{Trombidiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Raphignathoidea
Raphignathoidea is a superfamily of the Acari (mite) order Trombidiformes, comprising 1087 species in 62 genera and 12 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 ''Raphignathus'' and the family Xenocaligonellididae also have a th ... [...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 ( es, República de Cuba, links=no ), is an island country comprising the island of Cuba, as well as Isla de la Juventud and several minor archipelagos. Cuba is located where the northern Caribbea .... ''T. basillaris'' is a pioneering species that occurs in temporary ponds and readily fly. Adults are long and wide. References {{DEFAULTSORT:Thermonectus basillaris 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 * ''Hydat ... [...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 * ''Hydati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sexually Transmitted Infection
Sexually transmitted infections (STIs), also referred to as sexually transmitted diseases (STDs) and the older term venereal diseases, are infections that are spread by sexual activity, especially vaginal intercourse, anal sex, and oral sex. STIs often do not initially cause symptoms, which results in a risk of passing the infection on to others. Symptoms and signs of STIs may include vaginal discharge, penile discharge, ulcers on or around the genitals, and pelvic pain. Some STIs can cause infertility. Bacterial STIs include chlamydia, gonorrhea, and syphilis. Viral STIs include genital herpes, HIV/AIDS, and genital warts. Parasitic STIs include trichomoniasis. STI diagnostic tests are usually easily available in the developed world, but they are often unavailable in the developing world. Some vaccinations may also decrease the risk of certain infections including hepatitis B and some types of HPV. Safe sex practices, such as use of condoms, having a sma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elytron
An elytron (; ; , ) 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 Ripiphoridae), o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
