Micrura wilsoni (Coe, 1904)
|Micrura wilsoni, probably an anterior fragment|
|(Photo by: Dave Cowles, July 2012)|
Description: This Nemertean worm has a mouth separate from the proboscis pore, and both openings are ventral on the head (photo). Its head has cephalic slits. It has no caudal cirrus. The color of the dorsal side is chestnut to brown with irregularly spaced white lines. The underside is white or cream (photo). The edges of the head are white.
How to Distinguish from Similar Species:M. verrilli has a brown or purple dorsum with regularly spaced white, transverse lines and an orange triangle on the dorsal head.
Note: This photo looks somewhat different from the few other photos available for this species, plus it has fragmented so it is only tentatively identified.
Geographical Range: (California to Mexico)
Depth Range: Intertidal and subtidal
Habitat: Under rocks, in kelp holdfasts, in sandy mud, on piers
Biology/Natural History: This species
fragments easily. The individual above has probably lost the back
part of its body and has only 1 white stripe, just behind its head, left.
The mid-dorsal stripe on its head seems to be on a double ridge which extends
back posterior to the head (photo). The
species appears to have many eyes along the edges of the head (photo).
|Main Page||Alphabetic Index||Systematic Index||Glossary|
General Notes and Observations: Locations, abundances, unusual behaviors:
The animal has a pair of raised longitudinal middorsal ridges (colored
white on its head). This individual is hard to focus on because it
is crawling rapidly. Photo by Dave Cowles, July 2012
This view of the side of the head shows what are probably rows of black
eyes. Photo by Dave Cowles, July 2012
This view of the underside of the head (the worm is crawling on the
water's surface film) shows the ventral mouth. Photo by Dave Cowles,
Salish Sea Invertebrates web site provided courtesy of Walla Walla University