Host: Ramphocelus passerinii Bonaparte – Passerini’s Tanager

One chewing louse species was found on this host:

Myrsidea fusca (Carriker, 1903)

Menopon thoracicum fuscum Carriker, 1903: 187 .

Myrsidea fusca; Price & Dalgleish, 2006: 14, figs 16-17. Redescription. Type host. Ramphocelus passerinii Bonaparte

Material studied. 1 female and 2 nymphs ex Ramphocelus passerinii, COSTA RICA: Hitoy Cerere BR, Provincia Limỏn (9°40’N, 85°05’W), 19 August 2004, Literák, Č apek & Havlίček coll., 3 males, 2 females and 6 nymphs ex R. passerinii, COSTA RICA: Barbilla NP, Provincia Limỏn (9°59’N, 85°27’W), 2–6 September 2004, Literák, Č apek & Havlíček coll. Deposited in INBio – O. Sychra CR68.

Remarks. Six of ten birds examined were parasitised by M. fusca .