The freshwater shrimp family Euryrhynchidae Holthuis, 1950 (Crustacea: Decapoda: Caridea) revisited, with a taxonomic revision of the genus Euryrhynchus Miers, 1878 Author Pachelle, Paulo P. G. Author Tavares, Marcos text Zootaxa 2018 2018-02-19 4380 1 journal volume 30720 10.11646/zootaxa.4380.1.1 099d3015-8af8-4ae1-b667-1ac61dde9294 1175-5326 1175650 9DC29ECD-8C44-4F42-BA0E-9B0C830A7C73 Euryrhynchina edingtonae Powell, 1976 ( Figs. 3 , 4 , 62B ) Euryrhynchina edingtonae Powell, 1976 : 895 , figs. 5–7. Euryrhynchina edingtonae — Powell 1977 : 671; Victor & Ogbeibu 1985 : 343; Holthuis 1993 : 184, fig. 179; Pereira & García 1995: 128 (tab. 1); Pereira 1997 : 3, tabs. 6, 7, 9, figs. 1, 39–41; Ogbeibu & Oribhabor 2002 : 2429; Ikomi et al . 2005 : tab. 2; De Grave 2007 : 201; De Grave & Fransen 2011 : 309; De Grave et al. 2017 : 120. Euryrhynchyna edingtonae — Pereira 1997 : 51, tab. 6 [ lap. cal. ]. Euryrhynchyna edingtone — Olomukoro 2009 : 309; Olomukoro & Dirisu 2014 : tab. 1 [ lap. cal. ]. Material examined. Paratypes : 11♂ (cl 3.4– 1.9 mm ), 23♀ (cl 3.2– 1.7 mm ), 4♀ ov (cl 3.2– 2.9 mm ), RMCA 54030 , Nigeria , Edo State, swamp forest along Ogba River , 06°12'N 05°35'E , coll. C.B. Powell , 09.iv.1975 . Additional material : 24♂ (cl 3.5– 1.9 mm ), 22♀ (cl 4.1– 2.2 mm ), 5♀ ov (cl 4.1– 3.2 mm ), USNM 171376 , Nigeria , Rivers State, Port Harcout , Rumokoroshe , swamp forest stream, 04°51'00''N 07°03'42''E , coll. F. Ojarikre & C.B. Powell , 29.xii.1978 . Type locality. Swamp forest near Ogba River , about 8 km southwest of Benin city , Edo State ( Nigeria ) . FIGURE 3. A–H, Euryrhynchina edingtonae Powell, 1976 : male (cl 3.0 mm), Rumokoroshe, Rivers, Nigeria (USNM 171376). (A) Anterior region of the body, dorsal view; (B) Fourth sternite of pereon, median region, ventral view; (C) Fifth sternite of pereon, median region, ventral view; (D) Right second pereopod, lateral view; (E) Same, chela and carpus, dorsal (mesial) view; (F) Same, carpus and distal region of merus, mesial view, setae and granules omitted; (G) Left second pereopod, lateral view; (H) Same, chela and carpus, dorsal (mesial) view. FIGURE 4. A–G, Euryrhynchina edingtonae Powell, 1976 : male (cl 3.0 mm), Rumokoroshe, Rivers, Nigeria (USNM 171376). (A) Right third pereopod, lateral view; (B) Same, dactylus and distal region of propodus, lateral view; (C) Right fourth pereopod, lateral view; (D) Same, dactylus and distal region of propodus, lateral view; (E) Same, mesial view; (F) Right fifth pereopod, lateral view; (G) Same, dactylus and distal region of propodus, lateral view. Distribution. Nigeria ( Edo State, Delta State, Rivers State) ( Powell 1976 ; Victor & Ogbeibu 1985 ; Pereira 1997 ; Ogbeibu & Oribhabor 2002 ; Ikomi et al . 2005 ; Olomukoro 2009 ; Olomukoro & Dirisu 2014 ; present study) ( Fig. 62B , yellow circles). Description. Powell (1976: 895, figs. 5–7) . The material from Rumokoroshe ( Rivers State, Nigeria ) is illustrated in Figs. 3–4 . Remarks. The material from Rivers State (USNM 171376), studied by Pereira (1997) , represents the first record of E. edingtonae outside of Edo and Delta states where the species has been often reported ( Fig. 62B , yellow circles). The specimens match well the description and illustrations in Powell (1976) (see also Figs. 3 , 4 ). The genus Euryrhynchina was believed to be monotypic until recently when a second species was described ( De Grave et al . 2017 ). For the morphological differences between the two species, see remarks under E. puteola .