Back to search
AnimaliaacceptedgenusAccepted
Adisianus

Adisianus

GBIF:260990830

0datasets

0

Descendants

0

Children

0

Species

ABOUT

Descriptions(1)

Identification key and distribution of Adisianus species

1 Frontal head with pointed and almost smooth spine-like chaetae; manubrium with 6+6 chaetae; dorsal dens with 19 or less chaetae............................................. A. maassius (Palacios-Vargas & González, 1995) (Mexico)

- Frontal head with rough blunt chaetae; manubrium with 7+7 or 8+8 chaetae; dorsal dens with 21 or more chaetae......... 2

2 Ant III with two rough blunt chaetae, Ant I lacking such structures; frontal head B line with 1+1 rough blunt chaetae; male with 4+4 genital chaetae...................................................... A. maculatus (Bretfeld, 2002) (Brazil)

- Ant I and III with one rough blunt chaeta, each; frontal head B line lacking rough blunt chaetae; male with 6+6 or 7+7 genital chaetae............................................................................................. 3

3 Lateral body strongly pigmented; frontal head lacking unpaired chaetae; tenaculum with two chaetae; manubrium with 8+8 chaetae.................................................................. A. fuscus (Bretfeld, 2002) (Brazil)

- Lateral body weakly pigmented; frontal head with one unpaired chaeta; tenaculum with three chaetae; manubrium with 7+7 chaetae....................................................................... A. pinheadi sp. nov. (Brazil)

Rodrigues, Iandra Vitória Bezerra, Medeiros, Gleyce Da Silva, Nunes, Rudy Camilo, Bellini, Bruno Cavalcante (2025): The rare Adisianus Bretfeld (Collembola, Bourletiellidae): a new species from Northeastern Brazil and an identification key to the genus. Zootaxa 5632 (3): 580-594, DOI: 10.11646/zootaxa.5632.3.10, URL: https://doi.org/10.11646/zootaxa.5632.3.10MagnoliaPress via PlaziNo known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.

Export occurrence data

Darwin Core Archive (ZIP)

Occurrences with images

Source Information

The rare Adisianus Bretfeld (Collembola, Bourletiellidae): a new species from Northeastern Brazil and an identification key to the genus

checklist

This dataset contains the digitized treatments in Plazi based on the original journal article Rodrigues, Iandra Vitória Bezerra, Medeiros, Gleyce Da Silva, Nunes, Rudy Camilo, Bellini, Bruno Cavalcante (2025): The rare Adisianus Bretfeld (Collembola, Bourletiellidae): a new species from Northeastern Brazil and an identification key to the genus. Zootaxa 5632 (3): 580-594, DOI: 10.11646/zootaxa.5632.3.10, URL: https://doi.org/10.11646/zootaxa.5632.3.10

Abstract

Bourletiellidae (Symphypleona, Appendiciphora, Sminthuroidea) comprises several genera exclusively distributed across tropical and subtropical regions worldwide. Adisianus Bretfeld, a genus within this family, is found in the Neotropical Region and currently includes only three species described from forested areas in Brazil and Mexico. Here we revisit the genus describing a new species, Adisianus pinheadi sp. nov., from a transitional area between the Cerrado and Caatinga biomes in the Northeastern region of Brazil. The new species is more similar to A. fuscus (Bretfeld) and A. maculatus (Bretfeld) in the presence of rough blunt spine-like chaetae on antennae, dorsal head and large abdomen, but it is unique in the combination of its color pattern, antennal and head chaetotaxy, and number of chaetae on manubrium and tenaculum. We also update the diagnosis of the genus, provide an identification key to its species, and discuss its similarities with the Sphyrothecinae (Sminthuridae), along with the potential implications for the internal relationships within Symphypleona.

Rodrigues I V B, Medeiros G D S, Nunes R C, Bellini B C, plazi (2025). The rare Adisianus Bretfeld (Collembola, Bourletiellidae): a new species from Northeastern Brazil and an identification key to the genus. Plazi.org taxonomic treatments database. Checklist dataset https://doi.org/10.15468/hhdwgg accessed via GBIF.org on 2026-06-14.

CC0Published 5/8/2025View dataset
GBIF Usage Key
260990830
Dataset Key
7890efcc-06e4-4633-9e42-0cb2ec4d2b9c
Origin
source
Backbone Key
4640199
Taxon ID
1B1DB82EF4010F197CB996BC328BFD96.taxon
Last Crawled
6/8/2026
Last Interpreted
6/8/2026
View on GBIFSource Reference