Myrsidea spizae Price & Dalgleish, 2006 Price & Dalgleish, 2006 : 20 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 5LDRL d'Orbigny & Lafresnaye d'Orbigny & Lafresnaye [227,828,391,417] Aves Thraupidae Tachyphonus Animalia Passeriformes 7 64 Chordata species luctuosus  Two louse species were found on this host:   Ricinussp.   Material studied. 2 femalesand 1 nymph ex  Tachyphonus luctuosus,  COSTA RICA: Barbilla NP, Provincia Limỏn ( 9°59’N, 85°27’W), 5 September 2004, Literák, Č apek & Havlίček coll. Deposited in INBio– O. Sychra CR73–74.   Remarks.One of two birds examined was parasitised by  Ricinussp. This and the next species are the first records of chewing lice from  Tachyphonus luctuosus.    Myrsidea spizae Price & Dalgleish, 2006    Myrsidea spizae  Price & Dalgleish, 2006: 20, figs 28–29.   Typehost.  Chlorophanes spiza(Linnaeus)   Female(2). Mean length of head seta 10, 0.041 (n=3); seta 11, 0.092 (n=3); ratio10/11, 0.45. Metasternal plate with 6 setae. Tergal setae: I, 11–12; II, 13–15; III, 13–16; IV, 14; V, 11–13; VI, 10–11; VII, 11; VIII, 9. Postspiracular setae extremely long on II, IV, VII and VIII (0.40–0.46), long on I (0.27) and shorter on III and V–VI (0.16–0.20). Sternal setae: II, 4–5 medioanterior, 14 marginal and aster of 3–4 robust setae on each side; III, 22–26; IV, 32–35; V, 35–37; VI, 30–31; VII, 13–15; VIII–IX, 19–22. Dimensions: TW, 0.46–0.47; HL, 0.31–0.32; PW, 0.27–0.29; MW, 0.43–0.44; AWIV, 0.55–0.59; TL, 1.41–1.47; ANW, 0.22–0.23.   Material studied. 2 femalesand 2 nymphs ex  Tachyphonus luctuosus,  COSTA RICA: Barbilla NP, Provincia Limỏn ( 9°59’N, 85°27’W), 11 September 2004, Literák, Č apek & Havlίček coll. Deposited in INBio– O. Sychra CR69.   Remarks.One of two birds examined was parasitised by  M. spizae.