A new genus of minute Sparianthinae spiders from the Caribbean (Araneae, Sparassidae)

By

Rheims, Cristina A.
Alayón García, Giraldo

Type

Article

Date of Publication

2018

Original Publication

ZooKeys

Volume

742

Pages

13-22

Subjects

Cuba , Diminutella gen. n , taxonomy , West Indies

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.742.21819

 

Abstract

The monotypic genus Diminutella gen. n. is proposed to include the type species, Diminutella cortina sp. n., described from San Diego de los Baños, based on male and female specimens. This species is amongst the smallest Sparianthinae known to date reaching only 4.4 mm body length. It can be distinguished from other Sparianthinae by the combination of eye arrangement, with anterior eye row recurved, posterior eye row straight, spination pattern of legs I–II, with three ventral pairs on tibiae and one on metatarsi, and by the peculiar genitalia, with male palps bearing a large, laminar, layered conductor that rests within a retrolateral depression in the cymbium, and a female vulva with long copulatory ducts coiled around the stalk of a globose blind ending appendage.