NPSpecies

Specimen(s) collected during a study of coastal rock pools of Lake Superior at Isle Royale. Two shoreline zones were differentiated using a line between upslope “lichen zone” pools and downslope “splash zone” pools. See citation for details. Distribution — Not previously known in the Nearctic; has Western Palearctic range. Global distribution could not be determined from primary literature. Ecology — Species generally found in northern and montane lakes, pools and streams, and Zavrelimyia species are cold stenothermic. Remarks — IRNP specimens from lichen zone pools match descriptions of Z. melanura, although this may be an undescribed Nearctic species. Notable traits include plastron plate with long neck and clear rim, atrium over ½ of the thoracic horn width, segment eight with lateral shagreen that is medially constricted, pleura of segments 2-7 covering most or all of the lateral area, and total length about 5.2 mm.