6 - Sphaeromatidae::“Cute As Buttons”

Arubolana aruboides (Bowman and IlifTe, 1983)
Figure 65A-C
Arubolana parvioculata 145
DIAGNOSIS 6 3.9 mm, 9 4.1 mm. Body about three times longer than wide.
Eyes absent. Antennular peduncle article 3 longer than articles 1 and 2 to­
gether. Antenna reaching posteriorly to pereonite 6 or 7. Frontal lamina vis­
ible in dorsal view between antennal bases, anteriorly rounded and only
slightly wider than proximally, with distally flared ridge on ventral (exposed)
surface. Pleotelson as long as basal width, evenly narrowing to broadly
rounded posterior margin, latter with few small serrations and setae. Uropo-
dal exopod four times longer than wide; endopod length about twice basal
width, distally obliquely truncate, with elongate setae on inner margin.
RECORDS Church Cave and Wonderland Cave, Bermuda.
Arubolana imula Botosaneanu and Stock, 1979
Figure 65D
DIAGNOSIS 6 and 9 6.25 mm. Body 2.3 times longer than wide. Eyes ab­
sent. Antenna reaching posteriorly to pereonite 4 or 5. Rostrum distinct,
anteriorly truncate, separating antennal bases, fused with rectangular frontal
lamina ventrally. Pleotelson basally slightly wider than long, posterior mar­
gin broadly rounded to subtruncate, with irregular crenuiations or faint
teeth. Uropodal exopod apically acute, reaching to about midlength of endo­
pod; latter distally broad, with slight tooth at distolateral angle.
RECORDS Mangel Cora Tunnel, Aruba.
Arubolana parvioculata Notenboom, 1984
Figure 65E,F
DIAGNOSIS 6 2.8 mm, 9 2.9 mm. Body 3.3 times longer than wide.
Cephalon with tiny pigmented eyes. Antenna reaching posteriorly to per­
eonite 5. Frontal lamina projecting, dorsally visible. Pleotelson basally wider
than long, tapering to broadly rounded/subtruncate posterior margin bear­
ing about six low teeth. Uropodal exopod distally acute, almost three times
longer than basal width; endopod distally serrate, apically acute.
RECORDS Interstitial water near Discovery Bay, Jamaica.