Arremon aurantiirostris Lafresnaye Myrsidea aurantiirostris Price & Dalgleish, 2007 Sporophila corvina (Sclater) Ricinus diffusus (Kellogg, 1896) Myrsidea violaceae Price & Dalgleish, 2006 Habia fuscicauda (Cabanis) Myrsidea fuscicaudae Price & Dalgleish, 2006 Ramphocelus passerinii Bonaparte Myrsidea fusca ( Carriker, 1903 ) Tachyphonus luctuosus d’Orbigny & Lafresnaye Myrsidea spizae Price & Dalgleish, 2006 Ricinus Tachyphonus delattrii Lafresnaye Myrsidea Machaerilaemus laticorpus ( Carriker, 1903 ) Mitrospingus cassinii (Lawrence) Menacanthus eurysternus (Burmeiter, 1838) Myrsidea mitrospingi Price & Dalgleish, 2006 Ricinus Chewing lice (Phthiraptera) from buntings, cardinals and tanagers (Passeriformes: Emberizidae, Cardinalidae, Thraupidae) from Costa Rica, with descriptions of two new species of the genus Myrsidea (Phthiraptera: Menoponidae) Č, Ř Á Zootaxa 2007 1631 57 68 Sclater Sclater [227,573,1735,1761] Aves Emberizidae Sporophila Animalia Passeriformes 1 58 Chordata species corvina  One chewing louse species was found on this host:   Ricinus diffusus(Kellogg, 1896)   Physostomum diffususKellogg, 1896  Typehost.  Passerculus sandwichensis(Gmelin)   Material studied. 2 femalesex  Sporophila corvina,  COSTA RICA: Hitoy Cerere BR, Provincia Limỏn ( 9°40’N, 85°05’W), 20 August 2004, Literák, Č apek & Havlíček coll. Deposited in INBio–O. Sychra CR71.   Remarks.One of 29 birds examined was parasitised by  R. diffusus. This is the first record of a chewing louse species from  Sporophila corvina.   TABLE 1.List of hosts and their lice. ** denotes a new host-louse record Family Emberizidae    Arremon aurantiirostrisLafresnaye  Myrsidea aurantiirostris Price & Dalgleish, 2007  Sporophila corvina(Sclater) **  Ricinus diffusus(Kellogg, 1896)  Family Cardinalidae   Caryothraustes poliogaster(Du Bus de Gisignies)  Myrsidea poliogasteriSychra,  n. sp.  Cyanocompsa cyanoides(Lafresnaye)**  Myrsideasp.1   Saltator maximus(Müller) **  Myrsideasp.2 Family Thraupidae   Tangara larvata(Du Bus de Gisignies)  Myrsidea larvataeSychra,  n. sp.   Euphonia gouldiSclater  **  Myrsidea violaceae Price & Dalgleish, 2006  Habia fuscicauda(Cabanis)   Myrsidea fuscicaudae Price & Dalgleish, 2006  Ramphocelus passeriniiBonaparte  Myrsidea fusca( Carriker, 1903)   Tachyphonus luctuosusd’Orbigny & Lafresnaye**  Myrsidea spizae Price & Dalgleish, 2006**  Ricinussp.   Tachyphonus delattriiLafresnaye**  Myrsideasp.3 **  Machaerilaemus laticorpus( Carriker, 1903)  Mitrospingus cassinii(Lawrence)**  Menacanthus eurysternus(Burmeiter, 1838)  Myrsidea mitrospingi Price & Dalgleish, 2006**  Ricinussp.