Schizotrema agglutinanta (Băcescu, 1971)
Schizotrema agglutinanta: lateral view, after Petrescu & Sterrer, 2001
Synonyms: Cumella agglutinanta Băcescu, 1971; Cumella bermudensis
Petrescu 1990; Cumella spinosa Băcescu & Iliffe, 1991; Cumella
sterreri Petrescu, 1990
Taxonomic Characterization: Body covered with a few setae. Carapace a
little shorter than 1/3 of entire body length; marked notch, completely
separated pseudorostral lobes; upturned pseudorostrum; eye lobe with two
separated groups of lenses (three lenses, one pigmented each) (Petrescu &
Sterrer, 2001:117-123). Băcescu & Iliffe (1991) described Cumella
bermudensis based on females and C. sterreri based on males, mostly
from the same samples collected in Bermuda caves. These species, along
with C. spinosa from Walsingham Cave and C. agglutinanta from
Florida and Cuba, are considered synonymous and have been placed in the genus
Schizotrema Calman by Petrescu & Sterrer, 2001:121-122.
Disposition of Specimens: Walsingham Cave (Bermuda Natural History Museum - BAMZ 2001193013; Naturhistorisches Museum in Vienna - NHMW 19562); other caves (Grigore Antipa National Museum of Natural History Museum - GAM 49372-3, 256162, 256164-84).
Schizotrema agglutinanta: dorsal view, after Petrescu & Sterrer, 2001
Ecological Classification: Probably stygophilic.
Size: Adult female 1.70 mm in length, males 1.4-1.5 mm.
Number of Species in Genus: At least 11.
Genus Range: This is the first record of the genus Schizotrema from the Atlantic Ocean.
Species Range: Walsingham Cave, Deep Blue Cave, Straw Market Cave,
Green Bay Cave, Cripplegate Cave, Cherry Pit Cave, Sailor's Choice Cave, and
Emerald Sink, as well as Hungry Bay and Castle Harbour, Bermuda. Also
reported from Florida and Cuba.
Closest Related Species: The only presently recorded species of Schizotrema also with long and thin uropodal peduncle is S. depressum Calman, 1911 from the Indo-Pacific.
Habitat: Anchialine caves and open water bays of Bermuda.
Ecology: Cave specimens were primarily collected by divers using a 93 micron mesh plankton net from the surface of silty bottom sediments.
Life History: Collected specimens that have been sexed include 12 males, 41 females and 3 juveniles (Petrescu & Sterrer, 2001:117).
Evolutionary Origins: Cave populations probably colonized from open waters.
Conservation Status: Distributed in at least eight caves from the Walsingham cave district of Bermuda as well as from open waters in Hungry Bay and Castle Harbour.
Contributor: Iorgu Petrescu, Grigore Antipa Museum of Natural History,
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