CHECKLIST OF ORIBATID MITES (ACARI: ORIBATIDA) FROM MEXICO.

The Checklist of Oribatida from Mexico includes all known records to date, resulting in 768 species included in 378 genera from 117 families and 43 superfamilies. Records of nine fossil species from Lower Miocene amber (23 Ma) from Chiapas are included. Records are given for 12 of the biogeographic provinces proposed for the country, covering most of the Mexican states (except Sonora, Sinaloa and Tlaxcala), and therefore Mexico ranges among regions with a high species diversity, like Japan (833), India (789), Italy (721), Russian Far East (599), Canada (580) and Brazil (576).

A new Mexican species of the complex (Collembola, Isotomidae) associated with the hermit crab (Crustacea, Coenobitidae).

A new species of Willem, 1901 associated with hermit crabs living on seashores of Quintana Roo State, Mexico, is described and illustrated. It is blind, with 9-11 postlabial setae, unguis with a pair of lateral teeth, empodial appendix lanceolate and almost as long as unguis, tenaculum with 4 + 4 teeth and 3-4 setae on corpus, manubrium with 11-14 pairs of manubrial setae on anterior surface and 17-18 pairs on posterior surface, and mucro bidentate. An updated key for the identification of 29 American species of complex is included.

Global fine-resolution data on springtail abundance and community structure.

Springtails (Collembola) inhabit soils from the Arctic to the Antarctic and comprise an estimated ~32% of all terrestrial arthropods on Earth. Here, we present a global, spatially-explicit database on springtail communities that includes 249,912 occurrences from 44,999 samples and 2,990 sites. These data are mainly raw sample-level records at the species level collected predominantly from private archives of the authors that were quality-controlled and taxonomically-standardised.

The subfamily Pachyotominae in Mexico (Collembola: Isotomidae) with description of a new Pachyotoma species.

Pachyotoma primamexicana sp. nov, from Popocatépetl, Mexico is described; it is similar to Pachyotoma alpa (Christiansen & Bellinger, 1980) and P. muskegis (Guthrier, 1903).

Globally invariant metabolism but density-diversity mismatch in springtails.

Soil life supports the functioning and biodiversity of terrestrial ecosystems. Springtails (Collembola) are among the most abundant soil arthropods regulating soil fertility and flow of energy through above- and belowground food webs. However, the global distribution of springtail diversity and density, and how these relate to energy fluxes remains unknown.

Diesel effects on some population attributes of Orthonychiurus folsomi Schäffer 1900 (Collembola: Onychiuridae) under laboratory conditions.

Soil contamination by hydrocarbons and its effects on population health and welfare is a growing concern, especially in urban environments with industrial activity. Indicator species complement the information obtained from the measurement of environment quality by using physicochemical variables. The objective of this study was to evaluate the response of a springtail species that could be potentially used as a bioindicator of hydrocarbon contaminated sites.

Comparison of traditional and DNA metabarcoding samples for monitoring tropical soil arthropods (Formicidae, Collembola and Isoptera).

The soil fauna of the tropics remains one of the least known components of the biosphere. Long-term monitoring of this fauna is hampered by the lack of taxonomic expertise and funding. These obstacles may potentially be lifted with DNA metabarcoding.

Complete mitochondrial genome of the Mexican marine littoral hygrophilous (Collembola: Actaletidae) and its phylogenetic placement.

mitochondrial genome was assembled and annotated. It has 14,766 bp in length, all 37 genes are present and the gene order is the same as the Pancrustacean ancestral gene order. Phylogenetic analyses based on maximum likelihood placed the species as a sister group of the remaining Entomobryomorpha, not closely related to the Isotomoidea superfamily, contradicting the actual systematics of the group.

Four new species of Parajapyx (Diplura: Parajapygidae) from Mexico with redescription of Parajapyx isabellae aztecus Silvestri.

Four new Mexican Parajapyx species are described: P. silvestrii sp. nov.

Two New Species of Sminthurides Börner, 1900 (Collembola: Sminthurididae) from Mexico with Comments on the Genus and a Key to the Members from the Americas.

A survey of Sminthurides Börner, 1900 with specimens from the Americas was performed and two new species from Mexico are described and illustrated (drawings and SEM photographs), including a detailed study of body chaetotaxy. Sminthurides cihuatlensis sp. nov.

A new species of the genus Handschin, 1942 (Collembola: Neanuridae) from Peru.

Background: is a genus of springtails which can be of medium size (2 mm) or relatively long (5 mm). These springtails live in leaf litter, under the bark of dead trees or in decomposing wood, mainly in the Neotropical Region and are often collected by litter samples on Berlese funnels or by pitfall traps. Most species have been described, based on relatively few specimens and chaetotaxy of several species is incomplete.

A new species of Odontella from Tierra del Fuego and notes on Afrodontella Deharveng, 1981 (Collembola: Odontellidae).

Odontella rapoporti sp. nov., from Tierra del Fuego is described, as the third species of the Odontella lobata group, which has a subantarctic distribution.

New records of Collembola from marine littoral sand of Hainan Island, China, with description of a new Oudemansia species (Neanuridae: Pseudachorutinae).

One new species of springtail, Oudemansia chenorum sp. nov., is described and illustrated.

A new genus and species of Katiannidae (Collembola: Symphypleona) from Bolivia.

The new genus Borgesminthurinus gen. nov. from Bolivia shares with Sminthurinus the presence of antennal segment IV undivided, antennal segment III with one papilla; sacs of ventral tube smooth; each tenacular rami with 3 teeth and a basal appendix.

A new Caribbean species of Arlé, 1966 (Collembola, Neanuridae, Pseudachorutinae).

We here describe a new Collembola species, , from the Luquillo Experimental Forest in Puerto Rico. We describe as a distinct species based on the enlarged sensilla s3 in antennal segment IV, the absence of modified sensorial setae in abdominal segment IV and the presence of four setae on each dens. An updated key with illustrations for the identification of worldwide species of the genus is included.

New species of (Collembola, Neanuridae, Pseudachorutinae) from the Luquillo Mountains, Puerto Rico.

A new species of is described and illustrated. differs from other species of the genus by the presence of three eyes, three setae on the dens, and the white and purple coloration pattern. A key for identification of the world species of the genus is included.

An extraordinary new genus and species of Pseudachorutinae (Collembola: Neanuridae) from Colombia.

A new genus of springtail, Sernatropiella gen. nov., from Cundinamarca province, Colombia, was found at an altitude close to 3.

Description of a new Pergalumna (Acari: Oribatida: Galumnidae) species from Mexico and its postembryonic development.

A new species of Pergalumna from soil and litter was reared in laboratory and a description of adult and juveniles is provided. Adults are characterized by having bands of striae in the posterior part of notogaster, the interlamellar seta are longer than all other prodorsal setae and the lenticular area covers most of the prodorsum. It differs from Pergalumna boliviana by having long interlamellar seta, bigger ellipsoidal porose area Aa and the presence of A2; it differs from Pergalumna paraboliviana by the shape of porose areas; i.

Synthesis of Mexican Symphypleona (Hexapoda: Collembola): updated checklist with ecological and geographical distribution.

A taxonomic list of recorded Symphypleona from Mexico is presented. Data also includes a nomenclatorial update, distribution per political entity and habitat preferences. It is indicated that 28 genera and 73 species are currently distributed in 23 of the 32 states of Mexico.

Description of a new species of Willemia (Collembola: Hypogastruridae) from Panama with key to Willemia species occurring in the Americas.

Willemia panamaensis sp. nov. from Panama is described and illustrated.

First Mexican species of the genus (Collembola, Hypogastruridae).

A new species of is described and illustrated from a temperate forest of Citlaltépetl formation, Veracruz State. It is characterized by the following combination of characters: Th I with 2 + 2 dorsal setae; 2 + 2 axial setae on Th II-III; two capitate tenent hairs on each leg; unguiculus half the length of unguis; unguis with tooth; six dental setae and Abd VI without anal spines. A key for the species of the genus is included.

Redescription of Neelus fimbriatus Bretfeld Trinklein, 2000 (Collembola: Neelidae) from Colombia.

Neelus fimbriatus is redescribed using specimens from Colombia. Drawings and phase contrast microscope photos of the species are used. New characters are used as tibiotarsal tuberculate setae and abdominal ventral acetabula.

Revision of the genus Palmanura Cassagnau, 1983 (Collembola: Neanuridae: Neanurinae: Sensillanurini).

A revision of Palmanura is presented, P. klompeni sp. nov.

Redefinition of Denisiella Folsom Mills, 1938 (Collembola: Sminthurididae) with description of three new species from Brazil.

A new diagnosis of Denisiella is provided, based on the revision of most descriptions, including three new species from Brazil. New Brazilian taxa share the presence of 6 + 6 eyes, 4 + 4 serrate spine-like on tibiotarsi III and the polycarinate setae on tibiotarsi II but differ from each other by the shape and size of the sensilla of the tibiotarsi I. Denisiella rhizophorae sp.

gen. n. et sp. n. from Central America (Collembola, Neanuridae, Neanurinae).

and the type species are described and illustrated. The new genus shows the characters of Sensillanurini Cassagnau, 1983 tribe and is distinguished by the fusion of cephalic and abdominal tubercles: clypeal with antennofrontal and dorsointernal with dorsoexternal on head; presence of fused tubercles on each side of abdominal segment V. Most of the tubercles bear strong subcuticular reticulation.