insularis, Lythrypnus Bussing [W. A.] 1990:104, Fig. 4 [Revista de Biología Tropical v. 38 (no. 1); ref. 19516] Northwestern side of Grayson's Ensenada on southwestern side of Socorro Island, Revillagigedo Islands, off western Mexico, depth up to 3 meters. Holotype: LACM 31780-110. Paratypes: LACM 31780-35 (44), 32097-32 (51). •Valid as Lythrypnus insularis Bussing 1990 -- (Allen & Robertson 1994:266 [ref. 22193], Hoese in Fischer et al. 1995:1135 [ref. 22829], Nelson et al. 2004:172 [ref. 27807], Van Tassell 2011:141 [ref. 31732], Page et al. 2013:177 [ref. 32708], Fourriére et al. 2016:450 [ref. 34668], Del Moral-Flores et al. 2016:611 [ref. 34923], Parenti 2021:196 [ref. 38603], Page et al. 2023:123 [ref. 40505]). Current status: Valid as Lythrypnus insularis Bussing 1990. Gobiidae: Gobiinae. Distribution: Eastern Pacific: Revillagigedo Islands (Mexico) endemic. Habitat: marine.