20th International Congress of Arachnology

DENVER MUSEUM OF NATURE & SCIENCE

REPORTS

No. 3, July 2, 2016

International Congress of Arachnology

Comprising the tarantulas, purse web spiders, trapdoor

spiders, and their kin, mygalomorphs have long been

a source of intrigue and frustration for many arach-

nologists. Many groups remain problematic in terms

of their systematics. Ctenizidae is one such family. At

present, the nine ctenizid genera (

Bothriocyrtum,

Cteniza, Conothele, Cyclocosmia, Cyrtocarenum,

Hebestatis, Latouchia, Stasimopus

, and

Ummidia

)

remain in a state of phylogenetic uncertainty with

respect to their placement, though it seems clear that

the family is not monophyletic and warrants closer

inspection using modern molecular phylogenetic

approaches. We used anchored hybrid enrichment (AE),

which is a high-throughput, probe-based genomics

technique that can capture hundreds of phylogeneti-

cally informative nuclear loci. Using an AE probe set

specifically designed for Araneae and a combination of

supermatrix and gene tree/species tree approaches we

constructed a molecular phylogeny of the Ctenizidae

along with a number of groups which have histori-

cally fallen among the ctenizid taxa in previous studies

(Idiopidae, Actinopodidae, Euctenicidae, and Migidae).

Keywords: phylogenetics, systematics, ctenizidae,

Anchored Enrichment

Student - Poster Presentation

Sampling protocol and processing of

orb-web spiders. Insights towards conser-

vation strategies

Luz Adriana Gómez Galvis

, Alexander Sabogal

González

, Cecilia Stephania Cantor-Vaca

, Natalia

Herreño Castellanos

, Sergio Andres Torres

, Franklin

Cala-Riquelme

, Nini Johanna Beltran-Martin

, Diego

Alejandro Medina Gaitán

, Eduardo Flórez Daza

Instituto de Ciencias Naturales. Universidad Nacio-

nal de Colombia. Carrera 45 No. 26-85, Bogotá,

Colombia;

Centro Internacional de Física CIF,

Universidad Nacional de Colombia, Manuel Ancizar

Building. Office 2047, Cra. 45 No. 26-85, Bogotá,

Colombia;

Universidad Incca de Colombia, Cra. 13

No. 24-15, Bogotá, Colombia;

Universidad Militar

Nueva Granada, Kilometro 2 Vía Cajicá-Zipaquira,

Colombia;

Departamento de Zoología, Centro Orien-

tal de Ecosistemas y Biodiversidad, Enramadas 601

esquina Barnada, Santiago de Cuba;

Universidad El

Bosque, Av. Cra 9 No. 131A-02, Bogotá, Colombia

lagomezga@unal.edu.co

Spiders are among the most abundant and diverse

group of Arthropoda after insects. Due to their wide

distribution, relatively well-known taxonomy and

other biological characteristics, spiders may be useful

for ecological studies, including biodiversity conserva-

tion and management strategies. In this study, we

sampled spiders in three different types of vegetation

including forest, coffee plantations and pastures, in

two differentiated vegetative strata (aerial and lower),

in three localities of an important productive and

conservation area in Cundinamarca, Colombia. We

propose an improved methodology for sample col-

lection in the field and taxonomical identification

that includes immature and adult specimens with the

aim to guarantee better use of collected material. We

present a diversity analysis of two orb-web families,

Araneidae and Tetragnathidae, which includes richness

estimates, rarefaction curves and species similarity for

the three localities. We found differences in richness

and diversity among the studied localities and types of

vegetation. We registered strong statistical difference in

spider density between both strata. We collected a total

of 2052 specimens organized in 61 species: Araneidae

(46 spp) and Tetragnathidae (15 spp). We found five

new record species for Colombia:

Eustala scutigera,

Leucauge acuminata, L. moerens, L. longimana

and

L. funebris

. Concurrently, we recorded five endemic

species:

Hypognatha coyo, Mangora barba, Micra-

thena decorata, Chrysometa calima

and

C. carmelo

To appreciate the potential usage of this type of studies

for conservational purposes we present some insights

that could contribute to the ongoing discussions and

efforts concerning landscape conservation under the

current environmental challenges in the Colombian

territory.

Keywords: Araneidae, biodiversity conservation, spider

diversity, Tetragnathidae