Leucothoe kebukai White & Reimer 2012

Head. Anterior margin truncate, anterodistal margin subquadrate, distal margin oblique, convex; ventral cephalic keel anterior margin transverse, anteroventral margin subquadrate, ventral margin straight; eyes present with more than 10 ommatidia, round. Antenna 1 0.4 × body length, flagellum 7–articulate, peduncle article 1 width less than 2 × article 2, accessory flagellum absent. Antenna 2 0.3 × body length, shorter than antenna 1, flagellum 7–articulate. Mandibular palp ratio of articles 1–3 1.0: 3.0: 0.6, article 2 with 2–3 distal setae, article 3 with 1distal seta, incisors weakly dentate; left mandible with 9 raker spines, lacinia mobilis large, strongly toothed; right mandible with 7 raker spines, lacinia mobilis represented by a small ridge. Upper lip asymmetrically lobate, anterior margin setose. Lower lip inner lobes fused, bare; outer lobes with moderate gape, anterior margins setose. Maxilla 1 palp 1–articulate, margins constricted, with 3 distal slender setae; outer plate with 6 distal robust setae. Maxilla 2 inner plate with 3 slender distal, 3 marginal, and 1 facial seta; outer plate with 4 distal slender setae and 4 marginal slender setae. Maxilliped inner plates distal margin with v-shaped indentation, with short simple robust setae; outer plate inner margin smooth, reaching 0.1 × palp article 1, facial setae absent; palp article 4 subequal in length with article 3, distally acute. Pereon. Coxae 1–4 relative widths 1.0: 1.1: 1.1: 1.2. Gnathopod 1 coxa smooth, with tiny marginal setae, anterodistal margin produced, rounded, distal margin rounded, posterior margin slightly excavate, facial setae absent; basis distally expanded, anterior margin with 1 medium seta, posterior margin bare; ischium bare; carpus curved, distal length 7.4 × width, proximal margin smooth, distal margin with 1 seta; propodus curved, palm smooth with 12 distal setae; dactylus smooth, reaching 0.2 × propodus length. Gnathopod 2 coxa longer than broad, slightly larger than coxa 3, smooth, with tiny marginal setae; anterior margin rounded, anterodistally rounded, distal margin rounded, posterior margin straight, facial setae absent; basis distally expanded, anterior margin with 7 long setae, posterior margin bare; ischium with 3 posterodistal setae; carpus 0.2 × propodus length, curved, distally truncate, spoon-like, anterior margin smooth; propodus with 1 mediofacial setal row above midline, reaching 0.6 × propodus length, with 1 row of submarginal setae, posterior margin smooth, palm convex, with 3 small tubercles; dactylus curved, proximal margin smooth, bare, anterior margin distally acute, reaching 0.5 × propodus length. Pereopod 3 coxa length 0.9 × width, anterodistal corner overriding distal face of coxa 2, not extending below it, smooth, with tiny marginal setae, anterior margin rounded, distal and posterior margins straight, facial setae absent. Pereopod 4 coxa smooth, with tiny marginal setae, anterior and distal margins rounded, posterior margin tapered, facial setae absent. Pereopods 5–6 coxae facial setae present, pereopod 7 coxa facial setae absent. Pereopods 5–7 bases width length ratios 1: 1.5, 1: 1.5, 1: 1.6, posterior margins smooth, setose. Pleon. Epimera 1–2 with ventral setae, epimeron 3 bare, posteroventral corner subquadrate, produced. Uropods 1–2 relative lengths 1.0: 0.9. Uropod 1 peduncle 1.0 × inner ramus length, outer ramus 0.8 × inner ramus length; inner and outer rami each with 2 robust setae. Uropod 2 peduncle 1.1 × inner ramus length, outer ramus 0.9 × inner ramus length; inner ramus with 3 robust setae, outer ramus with 2 robust setae. Uropods 1–2 inner and outer rami with robust setae. Uropod 3 missing. Telson 1.8 × longer than wide, apex tridentate.

East China Sea: Okinawa–jima Island (Okinawa), Tokunoshima Island, Yakushima Island (both Kagoshima), Japan.