| urotocus rossittensis (trematoda: digenea: leucochloriidae) in the scarlet-rumped tanager, ramphocelus passerinii, and common bush tanager, chlorospingus ophthalmicus (passeriformes: thraupidae), from the area de conservación guanacaste, costa rica, with taxonomic revision of the genus and revised key to the leuchochloridiid-like brachylaimoidea. | urotocus rossittensis occurs in the bursa fabricii of the scarlet-rumped tanager, ramphocelus passerinii, and the common bush tanager, chlorospingus ophthalmicus, from the area de conservación guanacaste, costa rica. morphological examination of type material of u. fusiformis and u. kenyensis and costa rican specimens suggests that u. fusiformis and u. kenyensis are indistinguishable from u. rossittensis. confirmed accounts of urotocus spp. refer to a single adult morphotype whose geographic dis ... | 2006 | 16884025 |
| molecular phylogenetics and biogeography of tanagers in the genus ramphocelus (aves). | ramphocelus tanagers are distributed throughout the neotropical lowlands. in this paper, mitochondrial dna (mtdna) sequence data from cytochrome b and nd2 genes are used to estimate relationships among seven of nine species of the avian genus ramphocelus. genetic differentiation is high between ramphocelus passerinii passerinii and ramphocelus passerinii costaricensis, and the two subspecies are diagnosable and distinct from one another both morphologically and genetically. thus, elevation to sp ... | 1996 | 8728395 |