Morphological forms of Trypanosoma evansi from blood of Arabian camel [Camelus dromedarius] in the Riyadh metropolitan areas

Trypanosoma evansi is commonly referred to as haemoflagellate infesting camels and other vertebrates. It is causative agent of number of diseases. T. evansi has several morphological forms. We have detected three forms in the blood of camels, slender, transitional and intermediate. The present study is the first investigation on the morphological forms of T. evansi in Arabian camels in Saudi Arabia

Eimeria khobahensis sp. n. [apicomplexa: eimeriidae] from guinea fowl, numida meleagris in Saudi Arabia

Eimeria khobahensis sp.n. is described from the intestine of the guinea fowl, Numida meleagris [Galliformes: Phasianidae] collected at and around Khobah area near the Southern borders of Saudi Arabia. Sporulated oocysts are ellipsoid, 25x19.4 [23.3-27.6 x 17.8-20.6] microm, with a smooth, greenish-yellow bi-layered waIl 1.9 [1.5-2.4] microm. Micropyle and polar granule are present. An oocyst residuum is present, consisting of several globules that are irregular in shapes and sizes. Sporocysts are ellipsoid, 13.5 x 7.5 [11.9-14.2 x 6.7-8.8] microm, with a smooth single-layered wall and a prominent Stieda body, but no apparent substieda body. The sporocyst residuum is present, composed of numerous small granules. Sporozoites are comma-shaped, 10 x 3 [8-11 x 2.6-3.8] microm, each contains two refractjle bodies

Choleoeimeria riyadhae sp.n. [apicomplexa: eimeriidae] from the lizard, scincus [Sauria: scincidae] in Saudi Arabia

Choleoeimeria riyadhae species new was described from the gall bladder of the lizard, Scincus scincus [Sauna: Scincidae] collected from east of Riyadh City, Central Region. Sporulated oocysts are broadly ellipsoid, 36.8x30.5 [33.4-39.1 x 28.7-32.5] micro m, with a smooth, brownish-yellow bilayered wall; the shape index [L/W] is 1.21 [1.19-1.23] micro m. Micropyle, polar granule and oocyst residuum are absent. Sporocysts are elongate-ellipsoid, 14.8x9.1 [13.7-15.5 x 8.1-10.4] micro m with shape index [L/W], 1.63 [1.52-1.74] micro m. Sporocyst residuum is present. The sporocysts lack a Stieda body. Sporozoites are banana-shaped blunt at one end and slightly tapered at the other. Sometimes, free sporozoites were seen within oocysts

Eimeria falconensis sp. n. [Apicomplexa: eimeriidae] from the lanner falcon, Falco Biarmicus [Falconi-Formes: Falconidae] in Saudi Arabia

The oocysts of Eimeria falconensis sp. n. is described from the feces of the lanner falcon, Falco biarmicus, from the falcon market in Riyadh city, Saudi Arabia. Sporulated oocysts are ellipsoid in shape, measuring 27.2x18.1 [25.4-29.5x 16.3-20.4] micro m; shape index [length/width ratio] is 1.5 [1.35-1.68 micro m. The oocyst wall is smooth and bi-layered. Mmicropyle and polar granule are present, but an oocyst residuum is absent. Sporocysts are ellipsoid, 11.0 x6.9 [10.1-12.6 x 5.8-7.9] micro m; with shape index of 1.59 [1.43-1.68] micro m, with a smooth single-layered wall and a prominent Stieda body, but there is no substieda body. The sporocyst residuum consists of numerous small granules. Sporozoites are comma-shaped, each contains two refractile bodies

Eimeria livialis sp.N. [Apicomplexa: Eimeriidae] from the domestic pigeon, Columba livia domestica in Saudi Arabia

Eimeria livialis sp.n. is described from the intestine of the domestic pigeon, Columba livia domestica [Columbiformes: Columbidae] from Riyadh, central region, Saudi Arabia. Sporulated oocysts are elongate ellipsoid, 21 x 15 [19.5-23.2 x 14.3 - 16.5] micro m, with a smooth, greenish-yellow bilayered wall, 1.2 [1.0-1.3] micro m. Micropyle and polar granule are absent. An oocyst residuum is present, consisting of 4-7 globules that are irregular in shape and size. The sporocysts are ellipsoid, 10.6 x 6.7 [9.5 - 11.7 x 6.2-8.1] micro m, with a smooth single-layered wall and a small nipple-like Stieda body, but no apparent substieda body. The sporocyst residuum composed of few scattered granules. The Sporozoites are elongate, lie head-to-tail in the sporocysts, each with a small anterior and a large posterior refractile body

Echis carinatus [Serpentes: Viperidae] as a new host for Caryospora maxima [Apicomplexa: eimeriidae] in Saudi Arabia

This study represented a new host and geographic location for the parasite Caryospora maxima. Sporulated oocysts of this coccidian are spherical to sub-spherical, 42.8 X 41.2 [40.3-45.9 X 39.6-43.8] mum, with smooth brownish-yellow bi-layered wall, 1.9 [1.5-2.3] mum thickness. Micropyle and oocyst residuum are absent. Some oocysts had a small polar granule. Sporocysts are broadly ellipsoid, 22.1 X 16.8 [21.0-23.3 x 15.5-17.4]mum, with a prominent stieda and sub- stieda bodies. Sporocyst residuum is present consisting of many granules in a compact mass. Sporozoites are banana-shaped, each with two refractile globules. Oocyst measurements were similar to those reported from Psammophis schokari in Jordan. Except for the presence of a spherical polar granule, the oocyst morphology was identical to the original description of C. maxima

Eimeria griseus m sp [apicomplexa: emeriidea] from the gray monitor, varanus griseus in Saudi Arabia

Eimeria griseus n. sp. is described from the gallbladder of the gray monitor, Varanus griseus. The sporulated oocysts are ellipsoid in shape, measuring 32.8 x 23.0 [30.0-38.3 x 20.0-25.0] mum with smooth yellowish bi-layered wall, 1.2 [0.9-1.3] mum thickness. Micropyle, polar granule and oocyst residuum are absent. Sporocysts are ellipsoid, measuring 11.8 x 8.5 [10.7-12.6 x 7.5-9.0] mum. Sporocyst residuum is present. Sporocysts lack a Stieda body. Sporozoites are banana-shaped blunt at one end and slightly tapered at the second. Eimeria species from Varanus hosts were compared in this study

Eimeria gasperettii N. sP. [Apicomplexa: Eimeriidae] from the horned viper, Cerates cerastes gasperettii in Saudi Arabia

Eimeria gasperettii n. sp. was collected from the gall bladder of the horned viper, Cerastes cerastes gasperettii from Al-Thumamah, Central Region of Saudi Arabia. Sporulated oocysts are ellipsoid in shape, measuring 38.8 x 25.5 [29-41 x 17.2-28.4] mum with smooth brownish- yellow bilayered wall, 1.7 [1.5-2.0] mum thick. Micropyle polar granule and oocyst residuum are absent. Sporocysts are ellipsoid reaching 13.8 x 9.6 [11-14.5 x 8.0-10.3] mum. Sporocyst residuum is present. The sporocyst lacks a Stieda body. Sporozoites are crescent-shaped blunt at one end and slightly tapered at the other. Eimeria species from Viperidae were compared

new coccidian parasite [Apicomplexa: eimeriidae] from the scimitar-horned oryx, oryx dammah

Oocysts of Eimeria oryzae sp. n. were described from the feces of the scimitar-horned oryx, Oryx dammah [Cretzschmar, 1826]. Sporulated oocysts were ellipsoid in shape measuring 20.9 x 17.1 [16.7-24.2 x 15.5-20.2] mum with smooth brownish-yellow double layered wall. Micropyle and ellipsoidal polar granules were present, but micropyler cap and oocyst residuum were absent. The sporocysts were ovoid reaching 10.0 x 5.7 [9.2-11.0 x 5.2-6.5] mum with Stieda body and sporocyst residuum. Sporozoites were elongated, each with large and small refractile body

Eimeria chiropteri N.SP. [apicomplexa: eimeriidae] from saudi Arabian bat pipistrellus kuhlii [chiroptera: vespertilionidae]

Oocysts of Eimeria chiropteri n.sp. were described from feces of Pipistrellus kuhlii from Saudi Arabia. The sporulated oocyst of E. chiropteri is broadly ellipsoida 23.5 x 20.6 [18.8 - 25.9 x 16.5 - 25.2] mum and bilayered wall 1.2 [1.1 - 1.3] mum thick. Micropyle is absent, but a single, spherical polar body is present. Oocysts residuum is present as coarse granular sphere. Sporocyst is ovoid 10.8 x 7.5 [10.1 - 11.7 x 6.8 - 8.1]. Stieda body is present, but sub and parastieda bodies are absent. Sporozoites are elongated laying head to tail in the sporocyst each with a large spherical refractile globule. E. Chiropteri is the 4th species from the genus Eimeria detected in bats of the genus Pipistrellus

new coccidian parasite [apicomplexa: Eimeriidae] from the legals lizard diplometopon Seradyn [amphisbaenia: trogonophidae] in Saudi Arabia

Large numbers of coccidian oocysts belonging to the genus Isospora were obtained from the intestinal contents of 10 legless lizards Diplometopon zarudnyi was collected from eastern region, Saudi Arabia. The oocysts are spherical to subspherical with a bilayered wall. Micropyle, polar granule and oocyst residuum were absent. The sporocysts are ellipsoid. A sporocyst residuum, stieda and substieda bodies were presented. Sporozoites are banana shaped, blunt at one end and tapered at the other and containing spherical anterior and posterior refractile bodies of the same size. Since this Isospora sp. does not resemble any other species of Isospora previously described from lizards of the genus Diplometopon, it has been identified as Isospora diplometoponi n. sp. after the host generic name

Eimeria schmidti N. SP. [apicomplexa: Eimeriidae] from the sandy fringe-toed lizard [acanthodactylus Schmidt] in Saudi Arabia

Eimeria schmidti n.sp. was described from the gallbladder of Acanthodactylus schmidti from Al-Thomama area in the central region of Saudi Arabia. Sporulated oocysts are ellipsoid 31.2 x 23.3 [26.9 - 36.4 x 21.2 - 26]. Oocyst wall is smooth, greenish yellow, 1.31 [1.16 - 1.41] um thick and 2-layered. Micropyle, polar granule and oocyst residuum are absent. Sporocysts are ellipsoid 12.6 x 9.3 [10.9 - 14.1 x 7.6 - 10] um. Sporocysts residuum is present. The sporocysts lack a stieda body. Sporozoites are banana-shaped blunt at one end and tapered at the second end. Eimeria species from Lacertidae were compared