Myrsidea contopi Price, Hellenthal and Dalgleish, new species (Figs. 13–14)

Type host. Contopus cinereus (Spix), Tropical Pewee.

Female. Dorsal thorax and abdomen as in Fig. 14. Metanotum with 10–11 marginal setae. Tergites I–II or I–III with slight medioposterior convexity. Tergal setae: I, 8–10; II, 13–14; III, 15–17; IV, 14–15; V–VI, 11–13; VII–VIII, 8. Postspiracular setae on III and V–VI shorter than very long postspiracular setae on adjacent segments. Sternal setae: II, each aster with 4, less often 3, setae, 24 other setae; III, 19–21; IV, 30–32; V, 34–35; VI, 30; VII, 12–14; VIII–IX of subgenital plate, 22–25. Anus with 35–36 setae in dorsal fringe, 32–37 in ventral. Dimensions: TW, 0.43–0.44; HL, 0.31–0.32; PW, 0.27–0.28; PSL, 0.09–0.10; MW, 0.42–0.43; MSL, 0.14; AWIV, 0.56–0.58; ANW, 0.20–0.21; TL, 1.32–1.37.

Male. Metanotum with 9–10 marginal setae. Tergal setae: I, 7–8; II–III, 11–15; IV, 10–14; V, 10–12; VI, 10; VII, 8–10; VIII, 8. Sternal setae: II, each aster with 4, less often 3, setae, 18–22 other setae; III, 17–20; IV, 23–29; V, 28–30; VI, 22–27; VII, 13–16; VIII, 6–7. Genital sac sclerite 0.08 long, as in Fig. 13, with pronounced distal asymmetry. Dimensions: TW, 0.40–0.41; HL, 0.27–0.30; PW, 0.24–0.27; PSL, 0.09–0.10; MW, 0.36– 0.37; MSL, 0.12–0.13; AWIV, 0.45–0.46; GL, 0.42–0.43; TL, 1.18–1.23.

Type material. Holotype male (NMNH), ex C. cinereus, TRINIDAD: Sangre Grande, Melajo Forest, 21 Feb 1956, W. G. Downs, TRVL 109. Paratypes (NMNH): 2 females, 5 males, same data as holotype.

Remarks. The male is readily recognized from all others of this group by its unique genital sac sclerite (Fig. 13). The female only is tenuously separable from other species in the group by chaetotaxy and dimensions.