Mariana Chani Posse

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• Doctor in Biological Sciences (Zoology)
• Researcher at National Scientific and Technical Research Council

A new genus, Corisantis gen. nov., within the Andean clade (AC) of the rove-beetle subtribe Philonthina, is described and illustrated, including 14 species. This new genus comprises six valid species formerly assigned to Belonuchus Nordmann (B. candens (Erichson, 1840) and B. pulchripennis Bernhauer, 1908) and Philonthus (Ph. auripennis Bernhauer,...

The tropical Andes are known as a biodiversity hotspot with the highest percentage of endemic plants and vertebrates in the world. The Andean genera Leptopeltus Bernhauer and Leptopeltoides Chani-Posse & Asenjo contain six and four species respectively, most of which occur in the Andean highlands near 3000 m. Here, we describe two new species of th...

This paper describes and illustrates two new species of the genus Tetradonia Wasmann, 1894 (Staphylinidae: Aleocharinae), discovered in the Eastern Andes of Colombia: T. vonbeerensis Gualdrón-Diaz & Chani-Posse sp. n. and T. ramirezi Gualdrón-Diaz & Chani-Posse sp. n. This report marks the first documented presence of the genus in Colombia. Further...

Pseudochroaptomus ecuadoriensis Chani-Posse et al., a new genus and species of the subtribe Philonthina (tribe Staphylinini) from the Tropical Andes of Ecuador, is described and illustrated. A dataset of 35 morphological characters scored for 23 taxa representing main clades of Philonthina, with focus on the Neotropical lineage and its subclades wa...

Army ants provide nourishment to a large variety of animals. This includes birds that feed on animals flushed out by army ant raids, symbiotic arthropods that consume the ants' prey or their brood, and other arthropods that scavenge on army ant refuse deposits. The latter have not received much attention, and the few published studies lack detailed...

Philonthina (2864 species in 74 genera) represents almost one-half of the diversity of Staphylinini and is the largest of its subtribes. Most Philonthina species are found in tropical areas, but the origin of this diversity is still not well understood, mainly because their systematics belongs to a past era of taxonomy. Such is the case of a group...

A total-evidence approach reveals a new genus in the Neotropical (NT) lineage of the rove-beetle subtribe Philonthina. Carmenlyrus gen. nov. is described and illustrated, including four new species, C. adrianae, C. newtoni, C. tapanti and C. thayerae, the type species of the genus. Phylogenetic relationships within the NT lineage of Philonthina as...

Linoderus smetanai sp. nov. is described from Costa Rica. This is the third species in the southern Central American genus Linoderus of the subtribe Philonthina (tribe Staphylinini). The new species was included in a previous dataset of 52 morphological characters scored for the genus and representatives of its allied genera (Neopescolinus Chani-Po...

Two female specimens of the Neotropical genus Ophionthus Bernhauer were found during museum collection surveys, representing different species of the genus. These species are Ophionthus serpentinus Bernhauer, 1908 and O. asenjoi sp. nov. The genus Ophionthus was monotypic until the present study and only known from a single male specimen from Centr...

Leptopeltus trogloxenus López-Prada & Chani-Posse, a new species of the subtribe Philonthina (tribe Staphylinini) from the Andes of Colombia, is described and illustrated. A dataset of 49 morphological characters scored for 10 taxa, including all currently known species of Leptopeltus Bernhauer and its putative sister group, Leptopeltoides Chani-Po...

Epigeic coleopteran species are linked by complex trophic webs and implicated in several ecosystem services for agriculture. Although there are reports of ground-dwelling Coleopterans inhabiting main extensive agroecosystems, their assemblages in horticultural crops in Argentina have been little explored. We examined the community structure of epig...

Two new genera of Staphylinidae, Inesius gen. nov. (type species Inesius callosipennis (Scheerpeltz)) and the monotypic Rhaegalius gen. nov (type species Rhaegalius sophia sp. nov.). from the Tropical Andes are described and illustrated using characters of external morphology and male and female genitalia. Philonthus callosipennis Scheerpeltz is tr...

Konradus leehermani Chani-Posse & Ramírez-Salamanca, a new genus and species of the subtribe Philonthina (tribe Staphylinini) from the Tropical Andes of Ecuador, is described and illustrated. A dataset of 57 morphological characters scored for 23 taxa representing main clades of Philonthina and its putative sister groups was prepared and analysed b...

Classifications in the world's tropics often involve an early and sustained adoption of Holarctic‐based patterns. Such is the case of the megadiverse subtribe Philonthina and its Neotropical (NT) members, for which generic limits are ill‐defined due to an alleged high level of homoplasy. Although a recent total‐evidence study confirmed the monophyl...

As part of an ongoing phylogenetic study on the Neotropical Philonthina (Coleoptera: Staphylinidae) that includes species of Belonuchus Nordmann, 1837, Hesperus Fauvel, 1874 and Paederomimus Sharp, 1885 (Chani Posse & Ramírez Salamanca in prep.), we examined type material of species belonging to these genera as well as conspecific material from dif...

A checklist of all described species of Philonthina, a subtribe of the staphylinid tribe Staphylinini, known to occur in Central and South America (CASA) is presented. Included for each species, and for synonyms known from CASA, is a reference to the original description, type locality and type depository, and for each species the known distributio...

With 71 genera and over 2700 described species, Philonthina is the most speciose subtribe of rove beetle tribe Staphylinini and forms a major component of the largest remaining higher systematics challenge in Staphylinini, the ‘Staphylinini propria’ clade. A related systematics issue concerns the position of the genus Holisus (Hyptiomina), which wa...

The type specimens (all current categories) of Staphylinidae deposited in this Museum are listed; names are recorded, most of them represented by name-bearing types (primary types). The specific and subspecific names are alphabetically ordered in a single list, followed by the generic names (and subgeneric ones, if they were stated) spelled as they...

A systematic revision and a phylogenetic analysis of the Neotropical genera Linoderus Sharp, 1885 and Odontolinus Sharp, 1885 (Staphylininae: Staphylinini: Philonthina) including a broad selection of outgroup taxa is presented. Two valid species are recognized for Linoderus: L. gracilipes Sharp and one new species, L. alajuelensis sp.n. Linoderus n...

Flohria subcoerulea (LeConte), a relictual genus and species of the subtribe Philonthina (tribe Staphylinini) from the Americas, is redescribed and illustrated, its distribution documented, and lectotypes designated. The phylogenetic position of the genus within Philonthina, as well as its potential age and origin, is discussed.

A systematic revision and a phylogenetic analysis of the closely related Neotropical genera Pescolinus Sharp, 1885 and Neopescolinus gen.n. (Staphylininae: Staphylinini: Philonthina) are presented. Both genera are revised using characters of external morphology and male and female genitalia, with keys for identification, diagnoses, descriptions, il...

A key to 24 Staphylinidae species associated with decaying carcasses in Argentina is presented, including diagnoses, illustrations, distributional and bionomical data for these species. This article provides a table of all species associated with carcasses, detailing the substrate from which they were collected and geographical distribution by prov...

An illustrated key to the 29 genera of Philonthina currently known in the New World is provided, based on adult morphological characters. Updated information on the morphology, taxonomic history, bionomics and distribution of the Philonthina in the study area is also provided.

Apocellus andinus sp. nov. from Argentina is described and illustrated, detailed information on its ecology is provided, and a key to species of Apocellus from southwestern South America is given. This species was collected in riparian areas of a mountain dam at 1355 m elevation, and it was found in an unstable wetland environment in association wi...

The genus Leptopeltus Bernhauer, 1906 (Staphylininae: Staphylinini), distributed from western Venezuela to northwestern Argentina, is revised using characters of external morphology and male and female genitalia. Leptopeltus comprises five species, of which two are described as new: L. carchiensis and L. weyrauchi. Other valid species of the genus...

Philonthina, the largest subtribe of the rove beetle tribe Staphylinini, is a hyperdiverse group in the Neotropical Region, accounting for about half of the genera of the subtribe. Despite such diversity, Neotropical Philonthina have never been analysed phylogenetically, deterring formulation of a modern classification of the Staphylinini. A cladis...

Delgadobius amazonensis Chani-Posse & Couturier, gen. et sp. nov., a new genus and species of the subtribe Philonthina (tribe Staphylinini) from Amazonia, is described and illustrated. The potential phylogenetic relationships of Delgadobius with other Neotropical genera of Philonthina are discussed. Distributional and bionomic data are also provide...

Six species of Belonuchus Nordmann, 1837 from South America are redescribed and illustrated: B. aluticollis (Bernhauer, 1921), B. castaneus Chani-Posse, 2006, B. flavicoxis (Bernhauer, 1912), B. multipunctatus (Coiffait, 1981), B. richteri (Bernhauer, 1912) and B. weiserianus (Bernhauer, 1921). A checklist of the 23 species of Belonuchus currently...

Five species of Gabrius Stephens, 1829 from southern South America are redescribed and illustrated. Six species of Gabrius are now known from southern South America: G argentinus (Bernhauer, 1912), G hornaditanus (Rambousek, 1925), G. jujuyensis (Bernhauer, 1921), G nidicola (Bernhauer, 1921), G tucumanensis (Bernhauer, 1927) and G nigritulus (Grav...

The southern South American species of the genus Philonthus Stephens, 1829 (Staphylininae: Staphylinini) are revised using characters of external morphology and male and female genitalia. Three species of Philonthus are transferred to the genus Belonuchus Nordmann, 1837 resulting in the following new combinations: B. aluticollis (Bernhauer, 1921),...

Thinobius andinus sp. nov. from Argentina is described and illustrated, detailed information on its ecology is provided and a key to species of Thinobius from south-western South America is given. This species was collected from high elevation stream areas of the Mendoza River watershed. It belongs to pollution-sensitive species, and it was mainly...

Based on my revision of types of southern South American species of Philonthus Stephens, 1829 and Gabrius Stephens, 1829 some nomenclatural changes are proposed. Five species of Philonthus are transferred to Gabrius resulting in the following new combinations: G. argentinus (Bernhauer, 1912), G. hornaditanus (Rambousek, 1925), G. jujuyensis (Bernha...

The species composition and abundance of coprophilous predatory Staphylinidae in two sites of temperate and subtropical Argentina are presented and discussed in terms of their hypothetical effect on the dung breeding fly community. Specimens of Staphylinidae were collected from cow manure by flotation. Dung breeding fly puparia were also collected...

The genus Endeius Coiffait & Sáiz, 1968 (Staphylininae: Staphylinini), distributed from Chile and Argentina through Juan Fernández Is. and Galapagos Is., is revised using characters of external morphology and male and female genitalia. Endeius comprises seven valid species: E. punctipennis (Solier), E. nitidipennis (Solier), E. subpunctipennis Coif...

An analysis of the present knowledge of the family Staphylinidae in Argentina is presented. Staphylinidae are represented in the country by 19 subfamilies, 58 tribes, 301 genera, and 1017 species. Information about their taxonomic history, two tables with the taxonomic specific diversity of the genera and diversity of the subfamilies, a list of the...

The types of species of Staphylinidae (Coleoptera) housed in the collection of the Entomology Department of Museo de La Plata were examined and listed. These types belong to 46 species assigned to the following subfamilies: Aleocharinae (6 species, 17 types), Megalopsidiinae (1,4), Osoriinae (4, 19), Oxytelinae (5, 19), Paederinae (12, 32), Protein...

The types of species of Staphylinidae (Coleoptera) housed in the collection of the Entomology Department of Museo de La Plata were examined and listed. These types belong to 46 species assigned to the following subfamilies: Aleocharinae (6 species, 17 types), Megalopsidiinae (1, 4), Osoriinae (4, 19), Oxytelinae (5, 19), Paederinae (12, 32), Protei...

The genus Chroaptomus Sharp, 1885 (Staphylininae: Staphylinini), distributed from central Mexico to northwestern Argentina, is revised using characters of external morphology, including sexual dimorphism, and male and female genitalia. Chroaptomus comprises five species, of which two are described as new: C. centralis Chani-Posse and C. mexicanus C...

The third instar larva of eight Philonthus species from Argentina, P. flavolimbatus Erichson, P. pauxillus Solsky, P. bicoloristylus Chani-Posse, P. sericans (Gravenhorst), P. bonariensis Bernhauer, P. longicornis Stephens, P. rectangulus Sharp and P. quadraticeps Boheman, are described (five for the first time), keyed and illustrated. Measurements...

The genus Patagonopraocis gen. nov. (Pimeliinae: Praocini), distributed in the Patagonian steppes and xerophilous woodlands in the Andes foothills, is revised. Patagonopraocis consists of three new species: P. magellanicum sp. nov., P. puncticottis sp. nov. and P. minor sp. nov. Descriptions of the genus and its three species are provided. Main dia...

Eight dung-inhabiting species of Philonthus Stephens that occur in Argentina are treated. A new species, P. bicoloristylus (Tucuman Province), is described and illustrated. Two native species, P. bonariensis Bernhauer and P. quadraticeps Boheman, are redescribed and illustrated for the first time. Additional notes are given for five more species wi...