20th International Congress of Arachnology

Kolosváry,

Thelcticopis

Karsch,

Thomasettia

Hirst,

Uaiuara

Rheims and

Neostasina

Rheims and Alayón. The subfamily

is widely distributed, with species occurring in all zoogeo-

graphical regions, except the Antarctic.

Neostasina

was

recently proposed to include Neotropical Sparianthinae

species with legs I and II with three pairs of ventral spines

on tibiae and one pair on metatarsi. Currently the genus

includes 27 species from the Antilles. In this study, a cla-

distic analysis using parsimony was carried out to test the

monophyly of

Neostasina

and discuss the relationships

between its species and between Sparianthinae genera. The

data matrix comprised 72 morphological characters and 58

taxa. Of these, 18 belonged to

Neostasina

, 24 to other Spar-

ianthinae genera, 15 to other Sparassidae subfamilies and

one to Philodromidae. The analysis was carried out on TNT,

under equal weights, and yielded two most parsimonious

trees with 188 steps each. Results confirm the monophyly

Neostasina

, which arises as sister to a clade including

Decaphora

and

Pseudosparianthis

(here considered a

senior synonym of

Sampaiosia

). The analysis did not fully

resolve the relationships between the

Neostasina

species.

Within the genus, the Jamaican species

N. liguanea, N.

gunboat, N. guababoa

arise sister to

N. maroon

, nestled

within a larger unresolved clade including the Jamaican

N. mammee

and the Cuban species

N. siempreverde, N.

granpiedra, N. iberia

and

N. macleayi

. This large clade

arises as a polytomy with

N. bryantae

and

N. amalie

nestled within a larger polytomy including all the remain-

ing species and a small clade including

N. ouali

and

lucasi

Keywords: morphology, phylogeny, neotropical, Sparassidae

Poster presentation

Revalidation and revision of the genus

Sadala

Simon (Araneae: Sparassidae)

Cristina A. Rheims

, Peter Jäger

Laboratório Especial de Coleções Zoológicas, Instituto

Butantan, Av. Vital Brasil, 1500, 05503-900,

São Paulo, SP, Brazil;

Arachnology, Senckenberg

Research Institute, Senckenberganlage 25, 60325

Frankfurt am Main, Germany

carheims@gmail.com

The genus

Sadala

was proposed by Simon to include four

species previously described in

Sparassus

(

S. antiguensis

Keyserling,

S. rufus

Keyserling,

S. pellucidus

Keyserling,

and

S. luteus

Keyserling),

Olios ventrosus

Nicolet, and

six newly described species (

S. pictitarsis, S. nigristernis,

S. keyserlingi, S. velox, S. mathani

and

S. punicea

). A

few years later, Simon synonymized the genus with

Olios

Walckenaer claiming that he could not find significant

differences to maintain the species in a separate genus.

A comparison between the type specimens of the original

Sadala

species with the type species of the genus

Olios

Olios argelasius

Walckenaer, shows that the species

described by Simon do not belong to this genus.

Olios

argelasius

shows characters that are commonly associ-

ated to Sparassinae, such as two pairs of ventral spines on

tibiae I–IV and chelicerae with two promarginal teeth and

no intermarginal denticles. The

Sadala

species, on the

other hand, show characters that suggest they are more

closely related to Heteropodinae, such as three pairs of

ventral spines on tibiae I-IV, three promarginal teeth and

a cluster of denticles at the base of the cheliceral furrow.

Male and female genitalia also show significant differ-

ences, such as the lack of typical apophyses and distal

embolic coil in the male palp and lack of membranous

parts in the internal duct system in the female vulva, all

present in Olios. Based on the above mentioned facts,

Sadala is revalidated to include

S. pictitarsis, S. nigris-

ternis, S. keyserlingi, S. velox, S. mathani, S. punicea

and nineteen new species. In addition,

S. nigristernis

is considered a junior synonym of

S. velox

and

O. quin-

quelineatus

Taczanowski,

O. orchiticus

Mello-Leitão and

O. formosus

Banks are transferred to

Sadala

. The other

species originally described in

Sadala

remain in

Olios

until a more thorough revision of the genus is conducted.

Keywords: taxonomy, Araneae, neotropical region, new

species

Student - Poster presentation

The goblin spider genus

Ischnothyreus

(Araneae, Oonopidae) in Java and Sumatra

Miguel Richard

1,2

, Werner Graber

, Christian Kropf

1,2

Institute of Ecology and Evolution, Division of Com-

munity Ecology, University of Bern, CH-3012 Bern,

160

DENVER MUSEUM OF NATURE & SCIENCE

REPORTS

No. 3, July 2, 2016

Cushing