Myrsidea spadicei Price, Hellenthal and Dalgleish

Price, Roger D., Hellenthal, Ronald A. & Dalgleish, Robert C., 2005, The genus Myrsidea Waterston (Phthiraptera: Menoponidae) from tyrant­flycatchers (Passeriformes: Tyrannidae), with descriptions of 13 new species, Zootaxa 1048, pp. 1-20 : 16-17

Myrsidea spadicei Price, Hellenthal and Dalgleish , new species ( Fig. 21 )

Type host. Attila spadiceus (J. F. Gmelin) , Bright­rumped Attila .

Female. Dorsal thorax and dorsoventral abdomen as in Fig. 21 . Metanotum with 13 marginal setae. Tergite I only slightly expanded medially; tergite II longest medially, III somewhat compressed, and IV–VIII normal. Tergal setae: I, 15; II, 13; III–V, 14–16; VI, 12; VII, 10; VIII, 8. Postspiracular setae shortest on III and V–VI, and long to very long on other segments. Sternal setae: I, with single seta; II, each aster with 4 setae, 25 other setae; III, 25; IV–V, 33–36; VI, 29; VII, 14; VIII–IX of subgenital plate, 23. Anus with 44 setae in dorsal fringe, 38 in ventral. Dimensions: TW, 0.49; HL, 0.33; PW, 0.30; PSL, 0.12; MW, 0.47; MSL, 0.18; AWIV, 0.60; ANW, 0.25; TL, 1.55.

Male. Metanotum with 12 marginal setae. Tergal setae: I, 10–13; II–V, 14–17; VI, 13–14; VII, 10–11; VIII, 8. Sternal setae: I, with single seta; II, each aster with 4 setae, 19–21 other setae; III, 19–22; IV–V, 30–36; VI, 28–29; VII, 12–14; VIII, 4. Genital sac sclerite as in Fig. 12 . Dimensions: TW, 0.45–0.46; HL, 0.28–0.31; PW, 0.28–0.29; PSL, 0.11–0.12; MW, 0.39–0.40; MSL, 0.14; AWIV, 0.47–0.49; GL, 0.44–0.46; TL, 1.31–1.41.

Type material. Holotype female ( NMNH), ex A. spadiceus , COSTA RICA: Puerto Viejo, La Selva Biological Station, 11–14 Jun 1993, R. L. Fisher 380. Paratypes, all ex A. spadiceus ( NMNH, RCD): 1 male, same data as holotype; COSTA RICA: 1 male, Limon, Punta Cocles Hotel, 10 km E Pto. Viejo, 24–25 Apr 1992, R. L. Fisher 206.

Remarks. This is the only species of tyrannid Myrsidea that has a seta on sternite I for both sexes. This feature, supplemented with the quantitative chaetotaxy and dimensions, will separate M. spadicei from others of this group as well as from other tyrannid Myrsidea .

Figures

FIGURES 18 – 21. 18 – 19, Myrsidea cayanensis. 18, Female dorsal thorax and dorsoventral abdomen. 19, Margin of female subgenital plate. 20 – 21, Female dorsal thorax and dorsoventral abdomen. 20, M. olivacei. 21, M. spadicei.

FIGURES 9 – 17. 9 – 10, Myrsidea barbati. 9, Female dorsal thorax and dorsoventral abdomen. 10, Male genital sac sclerite. 11 – 12, M. similis. 11, Female dorsal thorax and abdomen. 12, Male genital sac sclerite. 13 – 14. M. contopi. 13, Male genital sac sclerite. 14, Female dorsal thorax and abdomen. 15 – 16, M. oleaginei. 15, Female dorsal thorax and dorsoventral abdomen. 16, Male genital sac sclerite. 17, M. neocinereae female dorsal thorax and dorsoventral abdomen.