Myrsidea barbati 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 : 8-10

Myrsidea barbati Price, Hellenthal and Dalgleish , new species ( Figs. 9–10 )

Type host. Myiobius barbatus (J. F. Gmelin) , Sulphur­rumped Flycatcher.

Female. Dorsal thorax and dorsoventral abdomen as in Fig. 9 . Metanotum with 6–8 marginal setae. Tergites II–III with slight medioposterior convexity. Tergal setae: I, 10– 14; II–III, 13–17; IV–V, 13–16; VI, 11–14; VII, 9–12; VIII, 8–10. Postspiracular setae on III and V–VI much shorter than very long postspiracular setae on other segments. Sternal setae: II, each aster with 4 setae, 20–27 other setae; III, 18–23; IV, 24–29; V, 28–33; VI, 24–32; VII, 11–15; VIII–IX of subgenital plate, 15–20. Anus with 25–31 setae in dorsal fringe, 24–29 in ventral. Dimensions: TW, 0.45–0.48; HL, 0.28–0.31; PW, 0.26–0.29; PSL, 0.10–0.11; MW, 0.39–0.43; MSL, 0.14–0.16; AWIV, 0.51–0.57; ANW, 0.17–0.19; TL, 1.37–1.46.

Male. Metanotum with 6 marginal setae. Tergal setae: I, 9–11; II–VI, 13–17; VII, 12– 15; VIII, 10–12. Sternal setae: II, each aster with 4 setae, 23–28 other setae; III, 16–20; IV, 20–26; V–VI, 22–28; VII, 14–17; VIII, 6, rarely 5. Genital sac sclerite about 0.07 long, as in Fig. 10 . Dimensions: TW, 0.41–0.43; HL, 0.27–0.29; PW, 0.24–0.28; PSL, 0.09–0.10; MW, 0.35–0.37; MSL, 0.12–0.14; AWIV, 0.43–0.45; GL, 0.41–0.46; TL, 1.13–1.22.

Type material. Holotype female ( NMNH), ex M. barbatus , COSTA RICA: San Jose Prov., Tinamaste, 12 km SW San Isidro de El General, 1 Feb 2000, Fisher & J.S. 3088. Paratypes ( NMNH, TNHM, RCD), all ex M. barbatus : COSTA RICA: 1 female, 2 males, same as holotype; 2 males, same except 3085; 1 male, Monte Anvio Lodge, 13 km N Portero Grande Puntarenas, 20 Mar 1995, Fisher & J.S. 2097; VENEZUELA: 3 females, Edo. Bolivar, 60 km E Sta. Elena, Jan 1987, R. C. Dalgleish; NE PERU: 1 female, Explor Napa Camp, Rio Napa, SE Iquitos, 14 Jun 1989, R. C. Dalgleish et al 9407; BELIZE: 1 female, 1 male, Aguacate, 4 May 1979, C. Lyal & A. Hutson; 1 female, 1 male, same except 5 May 1979; 1 female, 1 male, Toledo Distr., Jimmy Cub, 24 May 1979, C. Lyal & A. Hutson.

Remarks. The male of Myrsidea barbati is readily separated from males of others of this group by its highly distinctive genital sac sclerite ( Fig. 10 ). The female is recognized by its small number of setae on the metanotal margin, in conjunction with not>33 setae on sternites V–VI, not>32 setae in each anal fringe, and the narrow anus <0.20 wide. The small dimensions and the relative lengths of the postspiracular setae for both sexes will also separate this species from a number of the others.

Figures

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.