Taxa described in 1842

The Brachycera are a suborder of the order Diptera. It is a major suborder consisting of around 120 families. Their most distinguishing characteristic is reduced antenna segmentation.

thumb|Fresh stinkhorn mushroom

The Pyronemataceae are a family of fungi in the order Pezizales. It is the largest family of the Pezizales, encompassing 75 genera and approximately 500 species. Phylogenetic analyses does not support the prior classifications of this family, and suggest that the family is not monophyletic as it is currently circumscribed.

Gynacantha is a genus of dragonflies in the family Aeshnidae. The females have two prominent spines under the last abdominal segment. This gives the genus name (from Greek female and thorn) and the common name two-spined darners; they are also known as duskhawkers.

Acisoma is a small genus of dragonflies in the family Libellulidae. ==Species== It contains six species: {| class="wikitable" |- ! Male!! Female !! Scientific name!! Common name !! Distribution |- ||| ||Acisoma ascalaphoides ||littoral pintail ||Madagascar |- |120px|| ||Acisoma attenboroughi ||Attenborough's pintail ||Madagascar |- |120px || 120px ||Acisoma inflatum ||stout pintail || Sahara in Algeria, Egypt and Libya. |- |120px || 120px ||Acisoma panorpoides ||Asian pintail, grizzled pintail || Japan, the Philippines and Indonesia. |- | || ||Acisoma trifidum ||pied pintail, ivory pintail ||

Gloeoporus is a genus of crust fungi in the family Irpicaceae. The genus has a widespread distribution.

Alyssopsis is a genus of flowering plants in the family Brassicaceae. It includes two species native to Iran, Turkmenistan, and the Transcaucasus. Alyssopsis mollis (Jacq.) O.E.Schulz – southeastern Transcaucasus and Iran Alyssopsis trinervis Botsch. & Seifulin – Iran and Turkmenistan

Mycenastrum is a fungal genus in the family Agaricaceae. The genus is monotypic, containing one widely distributed species, Mycenastrum corium, known by various common names: the giant pasture puffball, leathery puffball, or tough puffball.

The Pilobolaceae are a family of fungi in the Mucorales order. Generally, species in this family have a widespread distribution, although there are some that are restricted to tropical and subtropical regions. This family includes two genera: Pilobolus, and Utharomyces.

Eupodium is a genus of ferns in the family Marattiaceae native to the Neotropics. Traditionally, many taxonomists have included Eupodium within the genus Marattia (along with Ptisana). However, molecular phylogenetic studies and morphological studies of extant and fossil taxa support the recognition of Eupodium as a lineage distinct from Marattia. Morphologically, Eupodium was thought to be distinct among the Marattiaceae in only having one frond at a time (occasionally two), bearing awns along veins, and having stalked synangia (clusters of sporangia that have become fused in development). Ho

Junghuhnia is a genus of crust fungi in the family Steccherinaceae (formerly placed in the family Meruliaceae). It was circumscribed by Czech mycologist August Carl Joseph Corda in 1842. The generic name honours German-Dutch botanist Franz Wilhelm Junghuhn.

Hysterographium is a genus of fungi in the class Dothideomycetes. It was circumscribed by Czech mycologist August Carl Joseph Corda in 1842.

Heliacus is a genus of gastropods belonging to the family Architectonicidae.

Odontorrhina is a genus of flower chafer beetles comprising four species and two subspecies. The bodies of all species are heavily covered with small bristles (setae), and they are believed to be most closely related to the genus Trichostetha. Members of the genus have been recorded exclusively from the South African provinces of the Northern and Western Cape, aside from one unconfirmed record from southern Namibia. They are endemic to the Fynbos and Succulent Karoo regions.

Cephalocarpus is a genus of flowering plants belonging to the family Cyperaceae. It includes 20 species of sedges native to tropical South America, ranging from Colombia and Peru to Venezuela, Guyana, Suriname, and northern Brazil.

Helicostylum is a genus of two species of fungi in the family Mucoraceae.

Abropus carnifex is a species of beetle in the family Carabidae, the only species in the genus Abropus.

Rhigiophyllum is a genus of flowering plants belonging to the family Campanulaceae. It contains a single species, Rigiophyllum squarrosum, a subshrub or shrub endemic to the Cape Provinces of South Africa.

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