First description of the male spider Pacifiphantes magnificus (Chamberlin &amp;amp; Ivie) (Araneae: Linyphiidae)

Slowik, Jozef; Blagoev, Gergin

doi:10.11646/zootaxa.3481.1.6

Cited by 6 publications

(4 citation statements)

References 7 publications

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“…10). It also has been previously pointed out that Pacifiphantes magnificus (Chamberlin & Ivie, 1943) could be a misplacement, and probably grouped with Porrhomma + Diplostyla as indicated by both morphology and DNA barcoding (Slowik and Blagoev 2012). As the type species, Pacifiphantes zakharovi was identified with a super short embolus (Eskov and Marusik 1994: fig.…”

Section: Discussionmentioning

confidence: 97%

“…102); Microbathyphantes Helsdingen, 1985 has coiled, whip-like, and fully exposed embolus (Tu and Li 2006: fig. 2C), unlike the one enveloped in a membranous plate of the convector in Callosa gen. n. The epigyne in Callosa gen. n. is distinguished by its long, spiraling copulatory furrows and the presence of a septum (Figs 3C, 7C); the receptacles are situated farther from atrium in most Bathyphantes species, furrows are not in double-helix; Kaestneria Wiehle, 1956 and Pacifiphantes have shorter copulatory furrows, which fold or curve (Slowik and Blagoev 2012: fig. 6); the copulatory furrows in Microbathyphantes make only half a turn.…”

Section: Taxonomymentioning

confidence: 99%

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Callosa gen. n., a new troglobitic genus from southwest China (Araneae, Linyphiidae)

Zhao¹,

Li²

2017

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A new linyphiid genus Callosa gen. n., with two new species Callosa ciliata sp. n. (♂♀, type species) and Callosa baiseensis sp. n. (♂♀), from southwest China are described. Detailed description of genitalic characters and somatic features is provided, as well as light microscopy and SEM micrographs of each species. Callosa gen. n. was found in caves in Yunnan and Guangxi, and its copulatory organs are similar to those of Bathyphantes and Porrhomma, but differ greatly in details. The monophyly and placement of Callosa gen. n. are supported by the results of molecular analysis.

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Section: Discussionmentioning

confidence: 97%

Section: Taxonomymentioning

confidence: 99%

Callosa gen. n., a new troglobitic genus from southwest China (Araneae, Linyphiidae)

Zhao¹,

Li²

2017

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“…As a rule, adult spiders in our dataset were identified to the species level based on morphology, but all representatives of certain small-bodied spider families (mainly Linyphiidae and Theridiidae) were barcoded because of the difficulty in species discrimination through morphology. Most juveniles and some females were assigned to a species based on their sequence similarity (<2%) to specimens of the taxon that were identified through morphological study [ 26 - 28 ]. Barcode clusters that were distinct from all others (>2% divergence), but that contained only juveniles, could not be identified morphologically and were thus assigned interim species codes and treated as separate species for analysis.…”

Section: Methodsmentioning

confidence: 99%

Spiders (Araneae) of Churchill, Manitoba: DNA barcodes and morphology reveal high species diversity and new Canadian records

et al. 2013

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BackgroundArctic ecosystems, especially those near transition zones, are expected to be strongly impacted by climate change. Because it is positioned on the ecotone between tundra and boreal forest, the Churchill area is a strategic locality for the analysis of shifts in faunal composition. This fact has motivated the effort to develop a comprehensive biodiversity inventory for the Churchill region by coupling DNA barcoding with morphological studies. The present study represents one element of this effort; it focuses on analysis of the spider fauna at Churchill.Results198 species were detected among 2704 spiders analyzed, tripling the count for the Churchill region. Estimates of overall diversity suggest that another 10–20 species await detection. Most species displayed little intraspecific sequence variation (maximum <1%) in the barcode region of the cytochrome c oxidase subunit I (COI) gene, but four species showed considerably higher values (maximum = 4.1-6.2%), suggesting cryptic species. All recognized species possessed a distinct haplotype array at COI with nearest-neighbour interspecific distances averaging 8.57%. Three species new to Canada were detected: Robertus lyrifer (Theridiidae), Baryphyma trifrons (Linyphiidae), and Satilatlas monticola (Linyphiidae). The first two species may represent human-mediated introductions linked to the port in Churchill, but the other species represents a range extension from the USA. The first description of the female of S. monticola was also presented. As well, one probable new species of Alopecosa (Lycosidae) was recognized.ConclusionsThis study provides the first comprehensive DNA barcode reference library for the spider fauna of any region. Few cryptic species of spiders were detected, a result contrasting with the prevalence of undescribed species in several other terrestrial arthropod groups at Churchill. Because most (97.5%) sequence clusters at COI corresponded with a named taxon, DNA barcoding reliably identifies spiders in the Churchill fauna. The capacity of DNA barcoding to enable the identification of otherwise taxonomically ambiguous specimens (juveniles, females) also represents a major advance for future monitoring efforts on this group.

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“…In this context, DNA barcoding generally improves the identification reliability for species that can only be identified by one sex or life stage, and enables identification of damaged specimens, and can therefore help detect range shifts that might otherwise go undetected (e.g. Chown et al 2009, Hendrich et al 2010, Slowik and Blagoev 2012. It can also be employed for the identification of taxa which lack sufficient taxonomists to meet identification requests.…”

Section: Introductionmentioning

confidence: 99%

Building a DNA barcode library of Alaska’s non-marine arthropods

Sikes

Bowser

Morton

et al. 2017

Genome

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First description of the male spider Pacifiphantes magnificus (Chamberlin & Ivie) (Araneae: Linyphiidae)

Cited by 6 publications

References 7 publications

Callosa gen. n., a new troglobitic genus from southwest China (Araneae, Linyphiidae)

Callosa gen. n., a new troglobitic genus from southwest China (Araneae, Linyphiidae)

Spiders (Araneae) of Churchill, Manitoba: DNA barcodes and morphology reveal high species diversity and new Canadian records

Building a DNA barcode library of Alaska’s non-marine arthropods

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