Chewing lice of genus Myrsidea (Phthiraptera: Menoponidae) from Turdidae (Passeriformes) of Costa Rica, with descriptions of seven new species Author Kounek, Filip Author Sychra, Oldrich Author Capek, Miroslav Author Literak, Ivan text Zootaxa 2013 3620 2 201 222 journal article 10.11646/zootaxa.3620.2.1 0c311450-b352-4971-b370-50b356ec0694 1175-5326 220745 40FAA8C1-22F5-4E79-A66D-96C0879FBE1A Myrsidea antiqua Ansari, 1956 Myrsidea antiqua Ansari, 1956 : Pak. J. Health , 5: 174, Figs 10 a–h. Type host : Turdus grayi grayi Bonaparte, 1838 —Clay-colored Thrush. Material studied. Three females and 2 males , ex Turdus grayi , COSTA RICA : Tapanti National Park, Sector Tapanti ( 09°46’N , 83°47’W ; 1200 m ), 2 August 2009 , Sychra and Literak leg. Deposited in INBio (O.Sychra CR184–185) and MMBC (O.Sychra CR183). Remarks. Our specimens differ from the redescription of M . antiqua presented by Clay (1966) by setal counts and dimensions as follows [setal counts and dimensions mentioned by Clay (1966) are in parentheses]: Female (n = 3) . Tergal setae: I, 13–15 (14–16); II, 15–16 (18–20); III, 16–19 (19–23); V, 19–21 (20–24); VI, 17–20 (20–26); VII, 16–18 (17–21). Postspiracular setae extremely long, 0.51–0.52, on II, IV and VIII; very long, 0.35–0.43, on I and VII; long, 0.21–0.25, on III; and short, 0.13–0.16, on V and VI. Sternal setae: II, 12–13 (9–12) anterior setae; III, 27–31 (25–29); V, 38–40 (33–38); VI, 32–37 (28–32); VII, 13–14 (10–13); VIII–IX, 23–25 (26–30) including 13–15 setae on vulval margin. Dimensions: MW, 0.50–0.51 (0.45–0.50); ANW, 0.23–0.24; TL, 1.59–1.66 (1.62–1.74). Male (n = 2) . Tergal setae, with median gap in the row of setae on II–VIII: II, 14–17 (19–21); V, 18–20 (20–23); VI, 17–18 (19–21); VIII, 9 (11–13). Postspiracular setae extremely long, 0.51, on II, IV and VIII; long, 0.25–0.31, on I and VII; and short, 0.11–0.14, on III, V and VI. Sternal setae: VI, 30–32 (32–42); VII, 15–17 (16–18). Sternites III with 1–2 medioanterior setae. Dimensions: HL, 0.28–0.30 (0.30–0.33); PW, 0.28–0.30 (0.29–0.31); MW, 0.39–0.40 (0.36–0.39); TL, 1.30–1.31 (1.38–1.43); GW, 0.11–0.12; GSL, 0.09.