Remarks: Fourteen species of Oochoristica have been reported from Neotropical lizards, ... Of these, 10 are Neotropical endemics, namely, Oochoristica ameivae (Beddard, 1914); Oochoristica bresslaui Fuhrmann, 1927; Oochoristica anolis Harwood, 1932;Oochoristica parvula Stunkard, 1938;Oochoristica insulamargaritae López-Neyra and Diaz-Ungría, 1957;Oochoristica travassosi Rego and Ibañez, 1965;Oochoristica vanzolinii Rego and Oliveria, 1965; Oochoristica iguanae ; Oochoristica maccoyi and Oochoristica leonregagnonae Arizmendi-Espinosa, García-Prieto, and Guillén-Hernández, 2005. Females of P. lamothei n. sp. Familia: Leptotyphlopidae. It can be distinguished from them by having bothridial hooks averaging 86 microns vs. 108-111 microns and 130-133 microns long, and 6-10 vs. 15-23 and 22-29 testes per proglottis, respectively., Los loxocémidos (Loxocemidae) son una familia de serpientes constrictoras. (Heligmonellidae: Heligmonellinae) is described from the small intestine of a cottontail, Sylvilagus fl oridanus (Allen, 1890) (Leporidae), from Costa Rica. Poseen una foseta loreal, un orificio a cada lado de la cabeza entre el ojo y el orificio nasal; se trata de un órgano termoreceptor muy sensible a las variaciones de temperatura que sirve para detectar las presas de sangre caliente. In addition, tapeworms with gravid proglottids, a stage of development that has not been previously reported for any species of Oochoristica, were obtained from both hosts. Acanthobothrium campbelli in Urotrygon chilensis and Acanthobothrium costarricense in Dasyatis longus, previously known in those hosts from the Pacific coast of Costa Rica, are reported from Ecuador for the first time. 1:37. The new species differs from Oochoristica acapulcoensis Brooks, Pérez-Ponce de León and García-Prieto, 1999, which also infects C. pectinata in Mexico, by the presence of numerous staining granules throughout the parenchyma of the scolex in the latter species; likewise, testes in O. acapulcoensis reach and even overpass the excretory canals, whereas in the new species they are limited to the central region between these tubules. Acanthobothrium monksi n. sp. The new species is the eighth proteocephalidean reported from P. fasciatum, six of which are commonly found in the Amazon and Paraná River basins. Because assumptions of strict host specificity and geographic isolation apparently have been used as criteria in determining species of Oochoristica, studies were conducted to address the effects that these assumptions could have on resolving the taxonomy of Oochoristica. ... To date, 6 species of Oochoristica have been recorded in Mexico, namely, Oochoristica parvula (Stunkard, 1938) Stun-kard, 1938, infecting Coleonyx elegans Gray, from Oxkutzcab, Yucatán (Stunkard, 1938); Oochoristica eumecis Harwood, 1932, andOochoristica osheroffi Meggitt, 1934, both parasitizing C. pectinata from Alpuyeca, Morelos (Flores- Barroeta et al., 1958, andFlores-Barroeta andHidalgo-Escalante, 1960, respectively); Oochoristica scelopori Voge and Fox, 1950, collected from Sceloporus jarrovi Cope, in the states of Chihuahua, Durango, Guanajuato, Hidalgo, Querétaro, and Zacatecas (Goldberg et al., 1996), and from Sceloporus grammicus Wiegmann, Sceloporus megalepidurus Smith, Sceloporus mucronatus Cope, Sceloporus parvus Smith, and Sceloporus variabilis Wiegmann, from Coahuila, México, and Oaxaca (Goldberg et al., 2003); Oochoristica whitentoni Stellman, 1939, in C. pectinata from Iguala, Guerrero (Flores-Barroeta, 1955; and finally, O. acapulcoensis in C. pectinata from Acapulco, Guerrero, ... DISCUSSION-Seven species of Oochoristica have been recorded in Mexico, namely: O. acapulcoensis Brooks, Pérez-Ponce de Leó n and, ... parvula (Stunkard, 1938), O. scelopori Voge and Fox, 1950, and O. whitentoni Steelman, 1939(see Arizmendi-Espinosa et al., 2005. One hundred ninety-one specimens representing 14 species of lizards, Ameiva ameiva, Basiliscus basiliscus, Corytophanes cristatus, Diploglossus monotropis, Echinosaura horrida, Gonatodes albogularis, Gymnophthalmus speciosus, Iguana iguana, Lepidoblepharis sanctaemartae, Lepidophyma flavimaculatum, Leposoma rugiceps, Mabuya mabouya, Polychrus gutturosus, and Thecadactylus rapicauda, from Panama were examined for helminths. sp., Physaloptera retusa, Piratuba digiticauda, Skrjabinelazia galliardi, Skrjabinodon caudolumarius n. and Physalopterinae gen. sp. Son serpientes constrictoras, es decir que matan a sus presas por constricción, encerrándolas en sus anillos, aplicando y manteniendo suficiente presión para inhibir la inhalación; la presa finalmente sucumbe asfixiada. possess a caudal bursa not bell-shaped, with a pattern of type 2-2-1 for right lobe and 2-3 with a tendency to type 2-2-1 for left lobe, whereas males of P. romerolagi possess a bell-shaped caudal bursa, with a pattern of type 2-2-1 with a tendency to type 4-1 for both lobes. evolution. We add 184 new locality records to Acari. This taxonomic impediment, or critical lack of global taxonomic expertise recognized by Sys-tematics Agenda 2000 and DIVERSITAS, prevents initiation and completion of biodiversity research programs at a critical juncture, where substantial components of global diversity are threatened. and Centrorhynchus sp. Taxonomists, who constitute the global taxasphere, hold the key to the development of effective surveys and inventories and eventual linkage to significant environmental and socioeconomic issues. It differs from A. fogeli by having bothridial hooks 163-195 microns vs. 78-114 microns long and.

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