20th International Congress of Arachnology

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while avoiding predation. Prior research in our lab has
shown that experimentally elevating octopamine and sero-
tonin alters predator wariness in the furrow orb-weaver
Larinioides cornutus. We are now interested in modifying
this behavior with antagonistic drug manipulations.
Fluoxetine, a selective serotonin reuptake inhibitor which
antagonizes 5-HT2C receptors, was used to modify levels of
serotonin. In order to quantify changes in aggression, the
anti-predator behavior, called the “huddle” response, was
scored 24 hours before and after drug manipulation. The
goal of this work is to further understand the role of this
neurohormone in spider behavior, and to develop tools
with which behavior can be manipulated in the field.
Poster presentation
Seventy-two new spider distribution
records and four undescribed species from
Indiana forests
M. A. Milne1, B. Foster2, J. J. Lewis 3, L. Bishop 4, A. Hoffman5,
T. Ploss1, B. Deno 1
1Department of Biology, University of Indianapolis,
1400 East Hanna Ave, Indianapolis, IN 46227;
2Indiana State University, Terre Haute, IN 47809;
3Lewis & Associates LLC, Cave, Karst & Groundwater
Biological Consulting, 17903 State Road 60, Borden,
IN 47106; 45747 W. Lost Branch Rd, Nashville, IN
47448; 5Turkey Run State Park, Indiana Department
of Natural Resources, Marshall, IN 47859
Spiders are an integral part of many ecosystems, yet
their diversity is understudied in Indiana. To uncover
spider diversity within the state, we collected spiders from
several ecosystems in many counties across the state.
Moreover, we re-identified spiders within the collection
of a former Indiana arachnologist, Thomas Parker.
Herein we report sixty-five new state records for spider
species and update seven species distribution records.
Some notable discoveries include: 1) Antrodiaetus
unicolor, Cybaeus giganteus, Oecobius cellariorum,
and Ummidia tuobita represent species within four
new families of spiders for the state (Antrodiaetidae,
Cybaeidae, Oecobiidae, and Ctenizidae, respectively), 2)
Agyneta allosubtilis is not known from the Midwest and
this record indicates a large southern range extension,
and 3) Dipoena nigra, Eidmannella pallida, Idionella
rugosa, Neon nelli, Styloctetor purpurescens, Para-
cornicularia bicapillata, Oreonetides beattyi, Larinia
directa, Microneta viaria, Spintharus flavidus, Lep-
thyphantes turbatrix, Lupettiana mordax, Tapinocyba
emertoni, Phylloneta pictipes, Ceratinopsidis formosa,
Talanites exlineae, and Epiceraticelus fluvialis repre-
sent species within 17 new genera for the state. Finally,
we discovered four new undescribed linyphiids in the
genera Agyneta, Goneatara, Oreonetides, and Wubana.
Keywords: Indiana, biodiversity, undescribed species,
distribution record
Student - oral presentation
Revision and phylogeny of Charinidae Quin-
tero, 1986 (Arachnida, Amblypygi) based
on morphological and molecular data
*Gustavo Silva de Miranda1 , Alessandro P.L. Giupponi2,
Nikolaj Scharff 1, Lorenzo Prendini3
1Center for Macroecology, Evolution and Climate,
Natural History Museum of Denmark (Zoological
Museum), University of Copenhagen, Copenhagen,
Denmark; 2Laboratório de Referência Nacional em
Vetores das Riquetsioses, LIRN-FIOCRUZ, Rio de Janeiro,
RJ, Brazil; 3 Division of Invertebrate Zoology, American
Museum of Natural History, New York, NY, USA
Charinidae is the most diverse family of Amblypygi with 84
described species from all tropical continents. Despite of
being old and having disjunct distribution, the diversity of
the family is relatively low and only three genera are cur-
rently recognized, Catageus, Charinus and Sarax . The goal
of this work is to carry out a taxonomical revision of the
family and to elucidate the phylogenetic structure of the
family. The morphology of almost all known Charinidae
species were studied and a morphological matrix created
with 168 characters (of which approx. 140 are new) for
101 taxa (95 charinids and 6 outgroup taxa). The matrix
was analyzed under parsimony. A molecular dataset was
generated from a smaller set of taxa, since DNA quality
140 DENVER MUSEUM OF NATURE & SCIENCE REPORTS | No. 3, July 2, 2016
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