<?xml version='1.0' encoding='utf-8'?>
<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:contributor>Steven V. Fend</dc:contributor>
  <dc:creator>Brenda Healy</dc:creator>
  <dc:date>2002</dc:date>
  <dc:description>&lt;p&gt;&lt;i&gt;Mesenchytraeus&lt;/i&gt;&lt;span&gt;&amp;nbsp;species are widespread and often abundant in rivers of northwest USA where they are associated with cobble-gravel beds in fast-running water and particularly with riffle habitats.&amp;nbsp;&lt;/span&gt;&lt;i&gt;Mesenchyraeus rhithralis&lt;/i&gt;&lt;span&gt;&amp;nbsp;n. sp. was the most frequent and was often the dominant macroinvertebrate. The species is characterized by the presence of primary septal glands at 3/4–5/6, short, stout vasa deferentia, absence of atria, atrial glands or accessory glands surrounding the penial bulbs, and free, long spermathecae without diverticula. The description of&amp;nbsp;&lt;/span&gt;&lt;i&gt;M. pedatus&lt;/i&gt;&lt;span&gt;&amp;nbsp;Eisen is amended. Failure to record enchytraeids from riffle habitats in the past may be due to a lack of familiarity with the family and the absence of suitable keys for identification.&lt;/span&gt;&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.1080/713833842</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>Taylor &amp; Francis</dc:publisher>
  <dc:title>The occurrence of Mesenchytraeus (Enchytraeidae: Oligochaeta) in riffle habitats of north-west American rivers, with description of a new species</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>