Chewing lice of the genus Myrsidea (Phthiraptera: Menoponidae) from the Cardinalidae, Emberizidae, Fringillidae and Thraupidae (Aves: Passeriformes) from Costa Rica, with descriptions of four new species Author Kounek, Filip Author Sychra, Oldrich Author Capek, Miroslav Author Lipkova, Alexandra Author Literak, Ivan text Zootaxa 2011 3032 1 16 journal article 46326 10.5281/zenodo.278715 631bcf14-5ada-441e-8de1-816275ccc240 1175-5326 278715 Myrsidea rozsai Price and Johnson, 2009 Myrsidea rozsai Price and Johnson, 2009 : 62 , Figs. 5–7 . Type host: Euphonia laniirostris d’Orbigny et Lafresnaye—Thick-billed Euphonia Material studied. 5 female and 5 male , ex Euphonia laniirostris (Fringillidae) , COSTA RICA : Zona Protectora Las Tablas, La Amistad lodge ( 8°54’N , 82°47’W ; 1300m ), 18 August 2010 , Sychra and Literak leg. Deposited in INBio (O.Sychra CR131–133) and MZM (O.Sychra CR134–135). Remarks. This is the first record of this species of Myrsidea from Costa Rica . Our specimens differ from the description of M . rozsai presented by Price and Johnson (2009) by setal counts and dimensions as follows [setal counts and dimensions mentioned by Price and Johnson (2009) are in parentheses]: Female (n = 5) . Length of head seta 10, 0.030; seta 11, 0.100; ratio10/11, 0.30. Tergal setae: II, 21 (23–26); III, 26 (27–32). Sternal setae: II, 15 (16–19) marginal between asters; III, 26 (21–25); sternites III–VII without medioanterior setae. Dimensions: AW, 0.57 (0.59–0.61). Male (n = 5) . Sternite III with 3–4 medioanterior setae, other sternites without medioanterior setae. Dimensions: HL, 0.27 (0.28); PW, 0.25 (0.27–0.28); MW, 0.33 (0.35); TL, 1.30 (1.22–1.24).