-
In this view it can be seen that the last two pereopods (walking legs), # 6 and 7, are of similar length, but #7 is slightly longer. A live video of this individual can be viewed here.
-
Caprella danilevskii male showing gnathopod 2Caprella danilevskii male showing gnathopod 2Specimens: National Museum of Natural History, Washington DC: (NMNH) 305410-305411
-
This female was carrying at least 11 larvae in her oostegite brood bpouch, Two of the larvae are shown above. They are about 3 mm long plus the antennae. The young appeared to be sticking their heads (cephalon) out and peering out from the pouch as the mother moved around, so I am guessing they are nearing the time when they can safely leave the mother.
-
Aeginella spinosa GnathopodsGnathopods I and II of Aeginella spinosa specimens (National Museum of Natural History, Washington DC: (NMNH) 34786; Id J. McCain 1966; From Cable Banquereau; USFC 1878)
-
Peramphithoe humeralis, a large adult female about 3 cm long + antennae. Found in late October under a stone at extreme low tide (-3) at Sares Head. This female is carrying babies between her oostegites. Two babies can be seen peeking out from below her body behind leg 5 (angled forward) and in front of leg 6 (angled backward). (Photo by: Dave Cowles, October 2007) Identified with the help of Craig Staude
-
Aeginella spinosa Head and Gnathopods Head and Gnathopods of Aeginella spinosa specimens (National Museum of Natural History, Washington DC: (NMNH) 34786; Id J. McCain 1966; From Cable Banquereau; USFC 1878)
-
Mayerella banksia (Laubitz, 1970) Common name: Skeleton Shrimp Mayerella banksia collected at Rosario Bay among drift algae. Photo by: Christina Smith, June2002
-
Aeginella spinosaDorsal spination of Aeginella spinosa specimens (National Museum of Natural History, Washington DC: (NMNH) 34786; Id J. McCain 1966; From Cable Banquereau; USFC 1878)
-
This closeup shows pereonites 5-7 with their appendages, pereopods 5-7. Pereopods 5-7 arise from the posterior end of their segment (pereonite) and are used for gripping the substrate such as this eelgrass blade. The left pereopod 7 is missing.
-
Aeginella spinosa Pereopods VIIPereopods VII of Aeginella spinosa specimens (National Museum of Natural History, Washington DC: (NMNH) 34786; Id J. McCain 1966; From Cable Banquereau; USFC 1878)
-
The propodus of gnathopod 2 is less than 2/3 as wide as it is long. Note also the gill on the segment behind.
-
Caprella drepanochir pereopods 5-7Caprella drepanochir pereopods 5-7Specimen: National Museum of Natural History, Washington DC: (NMNH) 13331; Chamisso Harbor; Esch-Scholts Bay; Alaska; WHDall 3677 (1701) 5-8 ftms
-
This ventral view shows there is no spine between the large gnathopods 2 and shows the location of the gills.
-
Caprella drepanochir maleCaprella drepanochir maleSpecimen: National Museum of Natural History, Washington DC: (NMNH) 13331; Chamisso Harbor; Esch-Scholts Bay; Alaska; WHDall 3677 (1701) 5-8 ftms
-
This view of the head (animal is looking to the left) shows the very large second antennae to the left, then the head with sessile eyes and prominent, forward-directed head spine. Below the head can be seen the first gnathopods which are on the anterior end of the first thoracic segment (pereonite), which extends out of view to the right.
-
Caprella drepanochir anteriorCaprella drepanochir anteriorSpecimen: National Museum of Natural History, Washington DC: (NMNH) 13331; Chamisso Harbor; Esch-Scholts Bay; Alaska; WHDall 3677 (1701) 5-8 ftms
-
Caprella angusta from eelgrass in Padilla Bay. Total length about 4 cm. One of the ventral flaplike gills is visible posterior to the large grasping gnathopods 2, right at the end of the eelgrass. (Photo by: Dave Cowles, July 2008)
-
Caprella drepanochir gnathopods 2Caprella drepanochir gnathopods 2Specimen: National Museum of Natural History, Washington DC: (NMNH) 13331; Chamisso Harbor; Esch-Scholts Bay; Alaska; WHDall 3677 (1701) 5-8 ftms
-
Caprella drepanochir gnathopod 2Caprella drepanochir gnathopods 2Specimen: National Museum of Natural History, Washington DC: (NMNH) 13331; Chamisso Harbor; Esch-Scholts Bay; Alaska; WHDall 3677 (1701) 5-8 ftms
-
Aeginina longicornis posterior pereopodsAeginina longicornis male pereopods. Specimen from National Museum of Natural History, Washington DC: (NMNH) 26017 Off Newport Sta. 787 USFC (A. longicornis var. nodosa) 19ftms;
-
Aeginina longicornis male anteriorAeginina longicornis male. Specimen from National Museum of Natural History, Washington DC: (NMNH) 26017 Off Newport Sta. 787 USFC (A. longicornis var. nodosa) 19ftms;
-
Aeginina longicornis maleAeginina longicornis male. Specimen from National Museum of Natural History, Washington DC: (NMNH) 26017 Off Newport Sta. 787 USFC (A. longicornis var. nodosa) 19ftms;
-
Aeginina longicornis female anteriorAeginina longicornis female. Specimen from National Museum of Natural History, Washington DC: (NMNH) 26017 Off Newport Sta. 787 USFC (A. longicornis var. nodosa) 19ftms;
-
"Aeginina elevata" whole specimen showing dorsal tuberculation.Aeginina elevata whole specimen showing dorsal tuberculation. National Museum of Natural History, Washington DC: (NMNH) 202150
