Myrsidea myiobori Kounek & Sychra 2011

Myrsidea myiobori Kounek & Sychra, 2011 (Figs 2 C���D) Myrsidea myiobori Kounek & Sychra, 2011b: 58, Figs 5 ���8. Type host. Myioborus miniatus (Swainson, 1827) ��� Slate-throated redstart Material examined. 1 ♀ 1 3, ���O.Sychra CR225 / Myrsidea myiobori / Kounek & Sychra, 2011 / det. O.Sychra // Troglodytes aedon intermedius / COSTA RICA / Tapanti National Park / Sector Tapanti / 11.viii.2009 / Liter��k & Sychra leg.��� Variability. Our specimens differ slightly from the description of M. myiobori in KOUNEK et al. (2011b) by setal counts and dimensions as follows [setal counts and dimensions in KOUNEK et al. (2011b) are in parentheses: setal counts and dimensions that are fully consistent with this description are not repeated here]: Female (n = 1). As in Fig. 2C. Length of DHS 11, 0.100 ���0.110 (0.110); ratio DHS 10 /11, 0.27���0.30 (0.27). First tibia with 3 (3) outer lateral ventral and 4 (4) dorsal setae (setal counts on legs are not mentioned in the description of M. myiobori, hence we added here the same numbers). Femur III with 14 (15���17) setae in ventral setal brush. Tergal setae counts: I, 9 (10); II, 15 (17); III, 19 (18); IV, 20 (18); V, 21 (19); VI, 18 (19); VII, 18 (15); VIII, 14 (11). Postspiracular setae very long, 0.46���0.48 (0.37���0.43) on II, IV and VIII; long, 0.21���0.23 (0.16) on VII; short, 0.15���0.18 (0.12���0.13) on III, V and VI. Postspiracular setae I are missing. Sternal setae: III, 24 (21); IV, 30 (32); V, 32 (35); VI, 31 (33); VIII���IX, 22 (21) including 13 (12) setae on deeply serrated vulval margin. Inner posterior seta of last tergum not longer than anal fringe setae with length 0.05���0.06 (0.04���0.05). Anal fringe formed by 41 (40) dorsal and 38 (37) ventral setae. Dimensions: TW, 0.44 (0.45); PW, 0.29 (0.28); MW, 0.44 (0.42); AW, 0.60 (0.54); ANW, 0.22 (0.24); TL, 1.50 (1.46). Male (n = 1). As in Fig. 2D. Length of DHS 10, 0.035 (0.030); ratio DHS 10/11, 0.35 (0.30). Metasternal plate with 7 (6) setae; metanotum with 9 (10) setae on posterior margin. Femur III with 12���14 (10���12) setae in ventral setal brush. Tergal setae counts: I, 8 (11); II, 16 (16���17); III, 15 (18); IV, 16 (17���18); V 17 (18); VI 17 (16���17); VII, 12 (14���15); VIII, 11 (11���12). Postspiracular seta I 0.20 long (0.22���0.24). Sternal setae: III, 21 (20); IV, 24 (23���24); V, 30 (27); VI, 28 (22���26); VII, 15 (18); VIII, 8 (7). Genital sac sclerite distorted, but it appears to be of the same type as that of M. myiobori, although the genital sac sclerite of the single paratype male of this species is also distorted (KOUNEK et al. 2011b: Fig. 8) Dimensions: TW, 0.40 (0.39���0.40); AW, 0.44 (0.42���0.43); GW, 0.11 (0.10); GSL, 0.10 (0.07). Bionomics. Although CICCHINO (1980) mentioned Myrsidea sp. from T. aedon from Argentina, this is the first species determination of a Myrsidea from this host. This louse was originally described from Myioborus miniatus (Swainson, 1827) belonging to family Parulidae from Costa Rica (KOUNEK et al. 2011b). Our finding represents interesting case of natural host switching and another record of one species of Myrsidea from two unrelated host families.
Published as part of Sychra, Old��ich, Kounek, Filip, Papou��ek, Ivo, ��apek, Miroslav, C��rdenas-Callirgos, Jorge Manuel, Franco, Sebastian & Liter��k, Ivan, 2014, Chewing lice (Phthiraptera: Amblycera et Ischnocera) from wrens (Passeriformes: Troglodytidae), with description of a new species of Myrsidea, pp. 1-27 in Acta Entomologica Musei Nationalis Pragae 54 (1) on pages 9-10, DOI: 10.5281/zenodo.4503818
{"references":["SYCHRA O., KOUNEK F., CAPEK M. & LITERAK I. 2011. Myrsidea povedai (Phthiraptera: Menoponidae), a new species of chewing louse from Phainoptila melanoxantha (Passeriformes: Bombycillidae). Journal of Parasitology 97: 593 - 595.","KOUNEK F., SYCHRA O., CAPEK M. & LITERAK I. 2011 b: Chewing lice of the genus Myrsidea (Phthiraptera: Menoponidae) from New World warblers (Passeriformes: Parulidae) from Costa Rica, with description of four new species. Zootaxa 3137: 56 - 63.","CICCHINO A. 1980: Contribucion al conocimiento de los malofagos argentinos y algunos malofagos hallados en Troglodytes aedon bonariae Hellmayr en la Provincia de Buenos Aires. Revista de la Sociedad Entomologica Argentina 39: 5 - 10."]}