Myrsidea melancholici 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

publication ID

http://doi.org/ 10.5281/zenodo.169922

publication LSID

lsid:zoobank.org:pub:1D5E264F-05A8-42C1-ABF0-425108BD2334

persistent identifier

http://treatment.plazi.org/id/213887BA-FFD3-FF8B-525F-FEBF9B0D3651

treatment provided by

Plazi

scientific name

Myrsidea melancholici Price, Hellenthal and Dalgleish
status

new species

Myrsidea melancholici Price, Hellenthal and Dalgleish  , new species ( Fig. 8View FIGURES 1 – 8. 1 – 2)

Type host. Tyrannus melancholicus Vieillot  , Tropical Kingbird.

Female. Dorsal thorax and abdomen as in Fig. 8View FIGURES 1 – 8. 1 – 2. Metanotum with 9–11 marginal setae. Tergites II –IV with slight medioposterior convexity. Tergal setae: I, 10–12; II, 14– 16; III, 12–15; IV –VI, 14–18; VII, 9–11; VIII, 8. Postspiracular seta on V shorter than very long postspiracular setae on other segments. Sternal setae: II, each aster with 4–5 setae, 26–29 other setae; III, 21–30; IV, 53–70; V, 64–74; VI, 49–58; VII, 15–23; VIII –IX of subgenital plate, 20–25. Anus with 36–41 setae in each fringe. Dimensions: TW, 0.53– 0.55; HL, 0.38–0.39; PW, 0.34–0.35; PSL, 0.12–0.14; MW, 0.51–0.53; MSL, 0.17–0.18; AWIV, 0.66–0.73; ANW, 0.25–0.26; TL, 1.66–1.82.

Male. Metanotum with 6–8 marginal setae. Tergal setae: I, 8–9; II, 12–14; III –IV, 12– 18; V, 11–15; VI, 9–18; VII, 11–12; VIII, 8. Sternal setae: II, each aster with 4, less often 5, setae, 21–26 other setae; III, 17–25; IV, 43–58; V, 55–64; VI, 41–52; VII, 16–25; VIII, 7–9. Genital sac sclerite as in Fig. 12View FIGURES 9 – 17. 9 – 10. Dimensions: TW, 0.48–0.49; HL, 0.33–0.35; PW, 0.30–0.31; PSL, 0.11–0.12; MW, 0.42–0.43; MSL, 0.14–0.15; AWIV, 0.53–0.55; GL, 0.49–0.52; TL, 1.44–1.47.

Type material. Holotype female ( NMNH), ex T. melancholicus  , TRINIDAD: Fort Read, 2 Jul 1954, T. H. G. Aitken, Lot 54­12322. Paratypes ( NMNH, TNHM, RCD), all ex T. melancholicus  : TRINIDAD: 1 female, Bush Bush Forest, Nariva Swamp, 28 May 1963, G. Aitken, TRVL 6634; 1 male, Sangre Grande, 24 Dec 1957, W. G. Downs, TRVL 6; COSTA RICA: 1 female, 6 males, Las Cruces Biological Station, Cota Brus, 18–21 Apr 1992, R. L. Fisher 146.

Remarks. Although this species is very close to Myrsidea seversoni  , females are separable from the latter by the postspiracular seta on V being distinctly shorter than the ones on IV and VI. The absence of males for M. seversoni  makes differentiation for that sex impossible, other than inferring that the postspiracular setae will eventually prove to be similar for both sexes.

NMNH

Smithsonian Institution, National Museum of Natural History

TNHM

University of Texas