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This view of the dorsal carapace shows the numerous spines both on the carapace (with larger spines around the margins) and on the legs and abdomen.
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This closeup of the head shows the pointed rostrum and the pattern of wide brown and narrower translucent bands on the antennae.
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This view of the underside shows the soft abdomen with setose spines. The abdomen is not held tightly under the thorax.
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This view of the undrside of the right chela shows the orange coloration with white teeth. Note the underside of the chela is almost smooth while the upper side has spines and setae.
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This closeup view of the face shows the rostrum which is covered with spines its entire length.
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This view of the underside shows the soft abdomen which is not held tightly against the underside of the thorax.
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Acantholithodes hispidus, about 1 cm carapace width, found on a muddy sand bottom at about 20 m depth in Admiralty Bay, WA. (Photo by: Dave Cowles, July 2014 )
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A small Hapalogaster mertensii found near Rosario. Carapace about 1.5 cm wide. (Photo by: Dave Cowles, July 2011 )
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Another photo of the species. Dave Cowles, July 2001 Enlargements of the right and left chelae from the picture above. Dave Cowles, July 2001 The broad abdomen of this species is soft, somewhat like leather; especially in the distal yellow portion visible above. This appears to be a male abdomen. See the photos below to compare with a female abdomen. Photo by Dave Cowles, July 2001
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This gravid female found subtidally on Sares Head is 7 cm across the carapace. Photo by Dave Cowles, July 2012. See more photos of her below.
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The underside of this female's abdomen is soft in part of it but has a rounded, hardened shield across the tip. She is carrying eggs (see below). Photo by Dave Cowles, July 2012
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This is the same female as shown above. She is highly defensive of her abdomen but the crevice seen in this view shows that she is carrying many bright orange eggs.
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Placetron wosnessenskii, subtidal from 20m depth, Sares Head. Carapace width about 6 cm. (Photo by: Dave Cowles July 1997)
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The abdomen of this species is thick and soft. The basal segment and the two distal segments have some calcified plates, which are not evident in this view. One claw is much larger than the other. The "palm" of the chela on the large claw is longer than the dactyl. The upper surface of the chelipeds is covered with prominent, granular tubercles but with no obvious spines.
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The rostrum is short. The carapace has orange-red tubercles with a white spot in the middle.
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The walking legs have setae and granules but no spines.
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Oedignathus inermis from Sares Head. Found intertidally in a sea cave (Photo by: Dave Cowles, August 2007)
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