Sparassidae, Stasina saetosa


Stasina saetosa Bryant, 1948 


Thomisidae, Isaloides touissantii


Isaloides touissantii, Banks, 1903:343.
Bryant, 1948:416; Penney & Perez-Gelabert, 2002:215

Male 3mm

Theraphosidae, Phormictopus atrichomatus, Schmidt, 1991

Subfamily Theraphosinae


Other Arachnids...

Class: Arachnida
Order: Amblypygi
Family: Phrynidae
Phrynus longipes (Pocock, 1894)
Eating a frog (Eleutherodactylus flavescens)
Phrynus marginemaculatus (C. L. Koch, 1841)

Class: Arachnida
Order: Thelyphonida
Family: Mastigoproctinae
Mastigoproctus proscorpio (Latreille, 1806) 

Order: Scorpiones
Family: Hemiscorpiidae
Subfamily: Liochelinae
Opisthacanthus lepturus (Beauvois, 1805) 
Family: Buthidae
Rhopalurus princeps (Karsch, 1879)

Centruroides bani (Armas & Marcano Fondeur 1987)

Theraphosidae, Avicularia sp.

Subfamily: Aviculariinae

Possibly this is a new species of arboreal tarantula, 
very similar to Avicularia rickwesti.
Both species are in a dubious genus along with
Avicularia laeta from Puerto Rico.
This species have a particular habit, the juveniles lives together,
then separate from each other, probably before sexual maturity.

Juveniles between 2nd and 3rd instar 

Juvenile 6th instar, 22mm

Adult Female 32mm

Scytodidae, Scytodes fusca

Spitting spiders are members of the family Scytodidae.
There are several genera, of which Scytodes is the best-known.
Over 150 species of scytodids have been described worldwide.
Scytodidae are related to the family Sicariidae commonly known
as Recluse spiders being that they are part of the same superfamily,
The fluid produced by the poison glands contains both venom and
spider silk in liquid form.
The venom-impregnated silk not only immobilizes their prey by
tying it down, but has a venomous effect as well.


Sparassidae, Olios antiguensis

Females 20mm, males 12mm, with over 9 cm legspan.
I have found this species for the first time in 1989.
They live inside the leaves of big trees and have nocturnal habits.

Segestriidae, Ariadna sp.

This is a new species that I recently discovered, the third species
of this family,very rare and probably still undescribed.
They are very small, only 4 to 6mm and they live on the ground
in a small tunnel covered with silk.


Lycosidae, Agalenocosa bryantae

These small spiders live near water, in ponds, rivers and streams.
They can run over the water very fast and hide under the surface,
like fishing spiders from the family Pisauridae and Ctenidae. 
The size is about 13mm for the females and 10mm for the males.

Female preparing the eggsac

Theraphosidae, Cyrtopholis sp. Undetermined.

Family: Theraphosidae
Subfamily: Theraphosinae
Genus: Cyrtopholis

This burrowing tarantula is very aggressive.
The color pattern is beautiful, very soft.
They have legs a little longer than the other species of the same genus.
The size of this female is about 40mm for the body and 100mm in legspan.

Theraphosidae, Avicularia rickwesti

Family: Theraphosidae
Subfamily: Aviculariinae



The spiders from this family are called brush-footed trapdoor spiders, 
they dig tubelike burrows, completely lined with silk, 
then they build the trapdoor with silk and debris. 
Sometime they have more than one entrance. 
When they feels the vibration of a passing prey they rushes out, 
capture the prey and come back to the tube quickly .
Only the subfamily Trichopelmatinae is present on the island with two
genera, Trichopelma and Psalistops.

Trichopelma sp. 1 - Immature

Trichopelma sp. 2 - Immature
Trichopelma sp.3 - Female

Psalistops sp. 1 - Female
Psalistops sp. 1 - Male

Psalistops sp. 2 - Female


The genus Syspira is not reported in Dominican Republic, I've found 
two species, the first one in 1988 and the second one in summer 2013.
They are very interesting and beautiful spiders.
The genus Teminius is represented with 3 species.

Syspira sp. 1 - South Region - Female

Syspira sp. 2 - East Region - Female

Teminius monticola - Female