Myrsidea meyi Valim, Price & Johnson, 2011

Kolencik, Stanislav, Sychra, Oldrich, Papousek, Ivo, Kuabara, Kamila M. D., Valim, Michel P. & Literak, Ivan, 2018, New species and additional data on the chewing louse genus Myrsidea (Phthiraptera: Menoponidae) from wild Neotropical Passeriformes (Aves), Zootaxa 4418 (5), pp. 401-431 : 409-410

Myrsidea meyi Valim, Price & Johnson, 2011

Myrsidea meyi Valim, Price & Johnson, 2011: 8 , figs 21, 26–27, 30–32.

Type host. Syndactyla subalaris (P.L. Sclater, 1859) —lineated foliage-gleaner.

Type locality. Palo Seco , Panamá.

Material examined. Ex Syndactyla subalaris : 1♀, 1♂, Tapantí National Park, Sector Tapantí, Costa Rica (09°46'N, 83°47'W), 3 August 2009, O. Sychra & I. Literak ( MMBC).

Ex Thripadectes rufobrunneus (Lawrence, 1865) —streak-breasted treehunter: 3♀, 7♂, Tapantí National Park, Sector Tapantí, Costa Rica (09°46'N, 83°47'W), 31 July and 6 August 2009, O. Sychra & I. Literak ( MMBC).

Remarks. This is the first record of a chewing louse from Thripadectes rufobrunneus , as well as the first record of M. meyi from Costa Rica. Our specimens differ from the original description of M. meyi by setal counts and dimensions, as follows [data from Valim et al. (2011) are in parentheses]:

Female (n = 4). Length of dhs 10, 0.055–0.065 (0.080); dhs 11, 0.115–0.125 (0.110); ratio dhs 10/11, 0.44– 0.57 (0.72). Femur III with 13–18 (14) setae in ventral setal brush. Tergal setae: I, 6–8 (8); II, 9–11 (12); III, 11–13 (13); IV, 12–15 (14); V, 13–16 (14); VI, 13–16 (14); VII, 4–10 (8); VIII, 4 (2). Sternal setae: II, 5–6 (5) in each aster, with 13–15 (13) marginal setae between asters, 4–5 (10) medioanterior; III, 25–29 (25); IV, 27–31 (31); V, 27–31 (30); VI, 26–31 (25); VII, 19–25 (19); VIII–IX, 11–16 (12); and 9–14 (13) setae on vulvar margin. Anal fringe formed by 35–39 (31) dorsal and 34–37 (36) ventral setae. Dimensions: TW, 0.48–0.50 (0.49); HL, 0.30– 0.35 (0.34); PW, 0.29–0.31 (0.31); MW, 0.44–0.50 (0.50); AW, 0.62–0.66 (0.65); ANW, 0.24–0.26 (0.24); TL, 1.57–1.60 (1.54).

Male (n = 8). Metanotum not enlarged with 4–5 (4) marginal setae; metasternal plate with 6–8 (6) setae. Femur III with 14–16 (11–14) setae in ventral setal brush. Tergal setae: I, 4–6 (4–5); II, 8–11 (9–10); V, 10–12 (12); VI, 11–12 (10–11); VII, 6–8 (5–7); VIII, 4–5 (4). Anterior margin of sternal plate II with a medial notch. Sternal setae: II, with 11–14 (8–11) marginal setae between asters, 5 (8) medioanterior; III, 20–24 (20–22); VII, 15–17 (14–15); VIII, 6–11 (6–9; sternites VII–VIII with 0–1 medioanterior setae. Dimensions: TW, 0.44 (0.45); HL, 0.32–0.34 (0.31); PW, 0.27–0.29 (0.29–0.30); AWIV, 0.47–0.49 (0.49); GSL, 0.07 (0.06); TL, 1.30–1.35 (1.23–1.33).