Myrsidea dalgleishi Valim, Price & Johnson, n. sp.
Creators: name: Valim, Michel P.
name: Price, Roger D.
name: Johnson, Kevin P.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Phthiraptera
Menoponidae
Myrsidea
Myrsidea dalgleishi

description: Myrsidea dalgleishi Valim, Price & Johnson n. sp.
(Figs. 28–29, 33–35)
Type host. Glyphorynchus spirurus (Vieillot, 1819) —the Wedge-billed Woodcreeper (Dendrocolaptidae).
Female (n = 3). Habitus as in Fig. 28. Hypopharynx fully developed, DHS10, 0.03 long; DHS11, 0.09 long. Gula with 4 setae on each side (rarely 5 on one side). Metanotum with 9–11 setae on posterior margin. Setae of femoral brush, 11–14. Metanotum and abdomen as in Fig. 33. Tergites of similar size, tergite I with very slight medioposterior convexity. With a conspicuous median gap in each tergal setal row. Tergal setae: I, 10–13; II, 12– 14; III, 14–17; IV, 13–15; V, 14–16; VI, 14–15; VII, 11–12; VIII, 9–10. Postspiracular setae shortest (0.11–0.17) on III, V, VI and VII, and extremely long (0.24–0.38) on I, II, IV, and VIII. Sternal setae: II, each aster of 3 setae (rarely 4 on one side), posterior margin with 11–14 and anteriorly with 7–8; III, 18–22; IV, 22–24; V, 25–27; VI, 19–21; VII, 8–10; VIII–IX with 9–10 marginal and 7–9 anterior setae. Each pleurite III–VII with about 4–5 short marginal setae. Anus with 30–34 ventral fringe setae, 30–34 dorsal. Dimensions: TW, 0.41; HL, 0.28–0.29; PW, 0.24–0.25; PSPL, 0.10; MW, 0.37–0.39; MSPL, 0.13–0.14; AWIV, 0.50–0.51; ANW, 0.18–0.20; TL, 1.29–1.36.
Male (n = 3). Habitus as in Fig. 29. Gula with 4 setae on each side. Metanotum with 6–10 setae on posterior margin, metasternal plate with 6 setae. Setae of femoral brush, 10–11. Metanotum and abdomen as in Fig. 34. Tergal setae: I, 10–12; II, 11–12; III–IV, 12–13; V, 12; VI, 10–12; VII, 9–10; VIII, 8. A conspicuous median gap in each tergal setal row. Postspiracular setae as for female. Sternal setae: II, each aster of 3 setae (rarely 4 on one site), posterior margin with 12 and anteriorly with 7; III, 17; IV, 18–20; V, 21–22; VI, 18–19; VII, 9–10; VIII, 5–6. Genital sac sclerite as in Fig. 35, rounded apically, without lateral projections. Dimensions: TW, 0.39; HL, 0.26; PW, 0.23–0.24; PSPL, 0.09; MW, 0.32–0.33; MSPL, 0.12; AWIV, 0.40–0.41; GL, 0.35–0.36; GSL, 0.09–0.10; TL, 1.07–1.09.
Type material. Holotype female, ex Glyphorynchus spirurus, Costa Rica: San Jose, Tinamaste, 12 km SW San Isidro de El General, 1 February 2000, R.C. Dalgleish, Fisher & JS #3078. Paratypes: 2 males and 2 females, same data as holotype. One pair of paratypes at MZUSP.
Additional material. 1 male and 1 nymph, ex G. spirurus, #1103, PERU: Madre de Dios, Cerro de Pantiacolla, elev. 680 m, 16 November 1985, D.H. Clayton coll., at FMNH; 1 nymph, ex G. s p i r u r u s, same data except 9 November 1985, at FMNH.
Remarks. Myrsidea dalgleishi n. sp. can be easily distinguished from M. souleyetii Sychra, 2007 (Figs. 22, 23) by its smaller measurements and by the length of postspiracular setae on VII in both sexes (long in M. souleyetii). Males can be distinguished by sternite VII with reduced number of setae (20 setae in M. souleyetii), curvature of parameres (strongly curved in M. souleyetii), and the distinct male genital sclerites. This new species was previously found by Sychra et al. (2007) on G. s p i r u r u s also in Costa Rica, but it was regarded as “ Myrsidea sp. 2” after the examination and description of only one female specimen. The color pattern described by those authors is also present in our specimens of M. dalgleishi n. sp. (see Figs. 28, 29).
Etymology. This species is named after Robert C. Dalgleish (1940–2009) in recognition of his contributions to the taxonomy of lice, especially his efforts in studying the genus Myrsidea.
description: Published as part of Valim, Michel P., Price, Roger D. & Johnson, Kevin P., 2011, New host records and descriptions of five new species of Myrsidea Waterston, 1915 (Phthiraptera: Menoponidae) from passerine birds (Aves: Passeriformes), pp. 1-19 in Zootaxa 3097 on page 10, DOI: 10.5281/zenodo.202624