Myrsidea flaviventris 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 : 10-11

Myrsidea flaviventris Price, Hellenthal and Dalgleish , new species

Type host. Tolmomyias flaviventris (Wied) , Yellow­breasted Flycatcher.

Female. Dorsal thorax and dorsoventral abdomen much as in Fig. 9 . Metanotum with 6–9 marginal setae. Tergites II–III with slight medioposterior convexity. Tergal setae: I, 11–12; II, 13–15; III–IV, 14–17; V–VI, 14–15; VII, 9–13; VIII, 8. 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, 24–25 other setae; III, 23–25; IV, 31–35; V, 38–40; VI, 35–37; VII, 13–16; VIII–IX of subgenital plate, 19–20. Anus with 35–42 setae in dorsal fringe, 34–36 in ventral. Dimensions: TW, 0.46; HL, 0.31–0.33; PW, 0.27–0.29; PSL, 0.10–0.11; MW, 0.41–0.42; MSL, 0.14–0.15; AWIV, 0.56–0.61; ANW, 0.20–0.21; TL, 1.50–1.64.

Male. Metanotum with 6–8 marginal setae. Tergal setae: I, 8–10; II, 12–14; III–V, 12–15; VI, 12–14; VII, 10; VIII, 8. Sternal setae: II, each aster with 4 setae, 18–23 other setae; III, 19–24; IV, 29–31; V, 32–34; VI, 29–32; VII, 15–17; VIII, 6–8. Genital sac sclerite similar to Fig. 12 . Dimensions: TW, 0.41–0.42; HL, 0.29–0.32; PW, 0.26–0.29; PSL, 0.10; MW, 0.35–0.37; MSL, 0.13–0.14; AWIV, 0.46–0.49; GL, 0.41–0.43; TL, 1.22– 1.36.

Type material. Holotype female ( NMNH), ex T. flaviventris , TRINIDAD: Sangre Grande, Melajo For, 15 May 1956, W. G. Downs, TRVL 207. Paratypes ( NMNH, TNHM, RCD), all ex T. flaviventris : TRINIDAD: 1 male, same data as holotype; 2 females, 2 males, Caroni River, 4 Jan 1961, TRVL 5257; 1 male, Naparima Mayaro Road, 23 Jul 1968, E. S. Tikasingh, BM 1974–636; NE PERU: 2 males, SE Iquitos, Rio Napa, Explor Napa Camp, 16 Jun 1989, R. C. Dalgleish et al 9406.

Remarks. The small number of marginal metanotal setae, the moderate dimensions, and the lengths of the postspiracular setae ally females of Myrsidea flaviventris with those of M. barbati and separate both of these species from all others of this group. The females of these two species may be separated from each other by the number of setae in each anal fringe, the width of the anus, and the number of sternal setae on V–VI. The males are recognized by their respective distinctive genital sac sclerites ( Fig. 12 vs Fig. 10 ).

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.