Sarah C. Crews

Sarah C. Crews
California Academy of Sciences · Department of Entomology

PhD

About

102
Publications
10,929
Reads
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481
Citations
Additional affiliations
July 2016 - July 2016
Islands and Seas non-profit
Position
  • Instructor
Description
  • Field course; responsible for teaching undergraduates field methods, surveying and identification techniques.
September 2015 - present
California Academy of Sciences
Position
  • Schlinger Foundation Postdoctoral Fellow
January 2013 - May 2013
University of California, Berkeley
Position
  • Instructor
Description
  • Two sections; Bio1B-General Biology Lab for biology majors; Responsible for developing quizzes, introducing the laboratory material, office hours, grading the laboratory portion of the course.
Education
August 2003 - September 2008
August 2001 - May 2003
San Diego State University
Field of study
  • Evolutionary Biology
August 1999 - May 2001

Publications

Publications (102)
Article
Full-text available
We relimit and revise the family Selenopidae to include four new genera and 27 new species from Australia and the Oriental Region. The family is redefined, as are the genera Anyphops Benoit, Garcorops Corronca, Hovops Benoit, Selenops Latreille, and Siamspinops Dankittipakul & Corronca, to accommodate the new genera and to correct previous inconsis...
Article
Animal genitalia are often complex and thought to vary little within species but differ between closely related species making them useful as primary characters in species diagnosis. Spiders are no exception, with nearly all of the 40,462 (at the time of this writing) described species differentiated by genitalic characteristics. However, in some c...
Article
Full-text available
Many ambush predators attack prey using rapid strikes, but these strikes are typically only anteriorly directed. However, a predator may attack laterally-and posteriorly-oriented prey if it can couple the strikes with rapid body reorientation. Here, we examined omnidirectional strikes in flattie spiders (Selenopidae), a group of sit-and-wait ambush...
Article
Full-text available
Despite the dominance of terrestriality in spiders, species across a diverse array of families are associated with aquatic habitats. Many species in the spider family Dictynidae are associated with water, either living near it or, in the case of Argyroneta aquatica, in it. Previous studies have indicated that this association arose once within the...
Article
Full-text available
Background: The immense geologic and ecological complexity of the Caribbean has created a natural laboratory for interpreting when and how organisms disperse through time and space. However, competing hypotheses compounded with this complexity have resulted in a lack of unifying principles of biogeography for the region. Though new data concerning...
Article
Here we examine the species of the Selenops isopodus species group: S. isopodus Mello-Leitão, 1941, S. arikok Crews, 2011, and S. curazao Alayón, 2001. We describe the female and male of S. bullerengue sp. nov. from Colombia and synonymize S. marilus Corronca, 1998a with S. isopodus, providing diagnoses and complete descriptions of both sexes of S....
Article
The Selenops banksi group is known from Central America, South America, and throughout the Southern Lesser Antilles of the Caribbean and currently contains four species: S. banksi Muma, 1953 – found disjunctly from Central America across northern South America – Panama, Guyana, Brazil, Ecuador, Peru; S. micropalpus Muma, 1953 – from Dominica, Marti...
Article
Full-text available
Four new species of Peckhamia Simon, 1900 (P. wesolowskae sp. nov. and P. surcaribensis sp. nov. from Cuba, P. espositoae sp. nov. from Jamaica and P. areito sp. nov. from the Dominican Republic) from the Greater Antilles are described. Additionally, Sarinda glabra Franganillo, 1930, Descanso montanus Bryant, 1943, D. formosus Bryant, 1943 and D. m...
Article
Full-text available
Four online photographs from Oaxaca, Mexico taken by N. R. Jenzen-Jones and posted on inaturalist.org reveal Selenops sp., probably S. mexicanus Keyserling (Arachnida: Araneae: Selenopidae), as a new host spider species, genus and family for the common and widespread American spider wasp Tachypompilus fer­rugineus (Say) (rusty spider wasp). The was...
Article
Despite the dominance of terrestriality in spiders, species across a diverse array of families are associated with aquatic habitats. Many species in the spider family Dictynidae are associated with water, either living near it or, in the case of Argyroneta aquatica, in it. Previous studies have indicated that this association arose once within the...
Article
Full-text available
Little is known of the arachnid fauna of the islands of Aruba, Bonaire and Curaçao, and the only work on spiders was published over a century ago. Here we provide a list of arachnids opportunistically collected from the islands, including Klein Bonaire and Klein Curaçao, over approximately 2 months. More than 750 specimens from 4 arachnid orders, (...
Article
The spider family Selenopidae is currently represented by two species in the Middle East: Selenops radiatus Latreille, 1819 and S. oculatus Pocock, 1898. We record the former species for the first time in Iran and Saudi Arabia. The latter, previously known only from the original description from Yemen, is re-described. Additionally, a new species,...
Article
The ground beetle Bembidion (Neja) ambiguum Dejean is native to Europe and north Africa, in the Mediterranean region. We report it from North America for the first time, from five localities around San Francisco Bay, California. The earliest record is from 2012.
Article
Two new species of Selenops, S. anacaona sp. nov. (♀) and S. caonabo sp. nov. (♀), are described from the Dominican Republic on the Caribbean island of Hispaniola. These two new species increase the number of endemic Selenops on Hispaniola to 13, surpassing Cuba, which currently has 11 endemic species. Additionally, the male of S. pensilis Muma, 19...
Article
Full-text available
Selenops submaculosus, a species of flattie spider distributed in the Bahamas, Cuba, and Florida, was collected in New Orleans, LA. Selenopids are large, but they often go undetected due to their speed and secretive lifestyles. Thus, although not previously found in the area, it is possible selenopids naturally occur in the region. However, because...
Article
Selenops submaculosus, a species of flattie spider distributed in the Bahamas, Cuba, and Florida, was collected in New Orleans, LA. Selenopids are large, but they often go undetected due to their speed and secretive lifestyles. Thus, although not previously found in the area, it is possible selenopids naturally occur in the region. However, because...
Article
Mate finding has been examined in a wide range of hymenopteran families, with the greatest knowledge from social species and parasitoids used in pest management. Velvet ants (Hymenoptera: Mutillidae) provide a unique system to study mate finding because short-lived flying males must find solitary, wingless females that have spatially and temporally...
Article
Full-text available
Selenops galapagoensis was recently synonymized with Selenops mexicanus because the types of the former did not differ from the latter in any visible way. Additionally, a large molecular analysis of the genus from North and Central America and the Caribbean that included both nuclear and mitochondrial genes showed no differences indicating two sepa...
Article
Full-text available
Spiders were opportunistically collected in 2006 and 2007 in the Turks and Caicos Islands during focused collecting of selenopid spiders. These samples were combined with a previous collection, and all were identified to the lowest taxonomic level possible. We found 28 families, 55 genera and 62 species. There appear to be several undescribed speci...
Article
Full-text available
The deserts of southwestern North America have undergone dramatic changes over their recent geological history including large changes in size and connec-tivity during the Pleistocene glaciopluvial cycles. This study examines the popu-lation history of the rare spider Saltonia incerta, once thought to be extinct, to determine the role of past clima...
Data
Table S1 PairwiseFST per site. Table S2 Pairwise FST per basin. Table S3 Results of isolation by distance analysis using IBDWS with 30,000 randomizations.
Article
Thirteen new species of the recently-described genus Karaops Crews and Harvey, 2011 are described from Western Aus-tralia, bringing the total number of species of this genus to 37. The new species are K. umiida sp. nov. (♀,♂), K. nyiyaparli sp. nov. (♀), K. kariyarra sp. nov. (♀), K. yurlburr sp. nov. (♀,♂), K. feedtime sp. nov. (♀), K. forteyi sp....
Article
Full-text available
The spider genus Selenops Latreille, 1819 occurs in both the Old World and New World tropics and subtropics and contains nearly half of the species in the family Selenopidae Simon, 1897. In this paper the members of the genus Selenops found in North America, Central America, and on islands of the Caribbean are revised, excluding Cuban endemics. No...
Article
The Caribbean region includes a geologically complex mix of islands, which have served as a backdrop for some significant studies of biogeography, mostly with vertebrates. Here, we use the tropical/subtropical spider genus Selenops (Selenopidae) to obtain a finer resolution of the role of geology in shaping patterns of species diversity. We obtaine...
Article
Full-text available
The ability to survive in a terrestrial environment was a major evolutionary hurdle for animals that, once passed, allowed the diversification of most arthropod and vertebrate lineages. Return to a truly aquatic lifestyle has occurred only rarely among terrestrial lineages, and is generally associated with modifications of the respiratory system to...
Article
The role of the landscape in structuring populations has been the focus of numerous studies, in particular, the extent to which islands provide opportunities for isolation, and the consistency of such an effect across lineages. The current study examines this phenomenon using a series of relatively widespread taxa, all within a single genus of spid...
Article
Estudiamos la fauna de las arañas de Ash Meadows National Wildlife Refuge en seis expediciones de colecta de octubre 2004 a agosto 2005. Encontramos ≥81 especies de 60 géneros y 26 familias. La diversidad fue dominada por Salticidae (≥13 especies en siete géneros), seguida por Lycosidae (ocho especies en siete géneros), Araneidae (ocho especies en...
Article
Selenopids are extremely fast‐moving, dorsoventrally flattened spiders and are among the most secretive of animals. However, they can be locally abundant, providing an opportunity to examine their life and natural histories. Here we report life history data from Selenops occultus which were studied and collected monthly for over a year at an experi...
Article
Full-text available
Many species inhabiting the Peninsular Desert of Baja California demonstrate a phylogeographic break at the mid-peninsula, and previous researchers have attributed this shared pattern to a single vicariant event, a mid-peninsular seaway. However, previous studies have not explicitly considered the inherent stochasticity associated with the gene-tre...
Article
Full-text available
Orb-webs constructed by members of the spider family Araneidae are composed of sticky and non-sticky threads deposited in a stereotypic fashion. This study examines how changes in a spider's nutritional condition affect the capture thread properties and architectural details of its web. It does so by characterizing the features of successive webs c...
Article
Comparative phylogenetic and phylogeographic analyses have revealed a pervasive midpeninsular divergence in the mitochondrial genealogies of numerous vertebrate taxa distributed on the Baja California Peninsula. In this study, we extend the investigation of regional vicariance in Baja California to an arthropod taxon by examining patterns of phylog...

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