The spider cytogenetic database

Current version: 7.5 (Jan 28, 2019)

Douglas Araujo, Marielle Cristina Schneider, Emygdio Paula-Neto and Doralice Maria Cella

Introduction of Database Families - Cytogenetics of spiders Bibliography Arthropoda cytogenetics group Scorpion database Pseudoscorpion database Harvestmen database Chromosomal analyses



Desidae Pocock, 1895


Cited as = species name adopted by the researcher that performed the cytogenetic analysis; 2n = diploid number of males and in parenthesis, diploid number of females; n = haploid number;

3n = triploid number; 4n = tetraploid number; SCS = sex chromosome system; T = telocentric; A = acrocentric; St = subtelocentric; Sm = submetacentric; M = metacentric; H = holocentric;

S = supernumerary chromosome; (?) = dubious description; (*) = designation of the species name not recorded in the taxonomic database.

Valid name

Cited as



Chromosomal morphology

Collection site


Metaltella simoni (Keyserling, 1878)

Amaurobius simoni





Diaz & Saez, 1966