New species and additional data on the chewing louse genus Myrsidea (Phthiraptera: Menoponidae) from wild Neotropical Passeriformes (Aves) Author Kolencik, Stanislav Author Sychra, Oldrich Author Papousek, Ivo Author Kuabara, Kamila M. D. Author Valim, Michel P. Author Literak, Ivan text Zootaxa 2018 4418 5 401 431 journal article 30109 10.11646/zootaxa.4418.5.1 fe001114-35af-46d5-bab4-4ab21689cdc6 1175-5326 1244956 04FEA195-71DA-4C7E-A62B-A658CFCF6B0C Myrsidea olivacei Price, Hellenthal & Dalgleish, 2005 Myrsidea olivacei Price, Hellenthal & Dalgleish, 2005 : 15 , fig. 20. Type host. Mionectes olivaceus Lawrence, 1868 —olive-striped flycatcher. Type locality. Simla near Arima , Trinidad & Tobago . Material examined. Ex Mionectes olivaceus : 2♀ , 2♂ , Rincón de la Vieja , Costa Rica ( 10°46'N , 85°18'W ), 22–24 August 2009 , O. Sychra & I. Literak ( MMBC ) ; 2♂ , Tapantí National Park , Sector Tapantí , Costa Rica ( 09°46'N , 83°47'W ), 6 August 2009 , O. Sychra & I. Literak ( MMBC ) . Remarks. This is the first record of M. olivacei from Costa Rica . Our specimens differ from the original description of M. olivacei by setal counts and dimensions, as follows [data from Price et al. (2005) are in parentheses]: Female (n = 2). Metanotum with 9–10 (10) marginal setae Tergal setae: I, 8–9 (11); III, 1 3–15 (12–13); IV, 13– 14 (12–13); V, 15–16 (12–13); VI, 12–14 (12–13); VII, 11–12 (10); VIII, 7–9 (6). Sternal setae: II, with 13–16 marginal setae between asters, 4–6 medioanterior (total number of setae on sternite II including aster setae is 25–30 vs 32 in Price et al. 2005); III, 22–24 (24); V, 34 (28–31); VI, 26–29 (28–31); VII, 16 (13); VIII–IX, 8–9; and 12– 13 setae on serrated vulvar margin (total number of VIII–IX sternal setae is 20–22 in comparison with 18 in Price et al. 2005). Dimensions: HL, 0.28–0.29 (0.31); PW, 0.28–0.29 (0.28); MW, 0.41–0.42 (0.43); AWIV, 0.54–0.56 (0.55); ANW, 0.21 (0.20); TL, 1.46–1.49 (1.43). Male (n = 4). Metanotum with 6–9 (8) marginal setae. Tergal setae: I, 7–8 (9); II, 12–14 (13); III, 12–13 (9– 12); IV, 12–15 (9–12); V, 13–15 (9–12); VI, 11–14 (9–12); VII, 8–12 (8); VIII, 7–8 (6). Sternal setae: II, with 13– 14 marginal setae between asters, 4–5 medioanterior (total number of setae on sternite II including aster setae is 25–27 vs 27 in Price et al. 2005); III, 1 7–21 (19); IV, 22–26 (21); V, 28–33 (26); VI, 24–26 (21); VII, 14–16 (12); VIII, 6–7 (5); remainder of plate, 6–9. Dimensions: TW, 0.39–0.40 (0.40); HL, 0.24 (0.28); PW, 0.25–0.26 (0.26); MW, 0.32–0.33 (0.35); AWIV, 0.41–0.42 (0.44); TL, 1.18–1.20 (1.12).