<abstract xmlns="http://www.w3.org/1999/xhtml"><p>In the current study, the structural characteristics of the egg and larva of the pentastomid <italic>Raillietiella mottae</italic> (<xref ref-type="bibr" rid="j_helm-2020-0028_ref_004_w2aab3b7c64b1b6b1ab2b2b4Aa">Almeida, Freire, &amp; Lopes 2008</xref>), are described and compared with those of other pentastomids. The eggs and larvae were obtained from lizards <italic>Phyllopezus periosus</italic> (Rodrigues 1986) and <italic>Phyllopezus pollicaris</italic> (<xref ref-type="bibr" rid="j_helm-2020-0028_ref_040_w2aab3b7c64b1b6b1ab2b2c40Aa">Spix 1825</xref>) which were collected in the environmental protection area of Cachoeira de Missão Velha, Ceará state, northeastern Brazil (7° 13’ S; 39° 08’ W). Following collection, the specimens were transported to the Laboratorio de Zoologia (LZ-URCA) and deposited in terrariums to obtain the feces, which were collected and analyzed for the presence of pentastomid eggs. The eggs found were typical of the genus <italic>Raillietiella</italic>, differing from those of other genera due to the lack of an outer fl exible membrane. The larva had two pairs of limbs, each with a pair of terminal hooks. The limbs were unsegmented, ventrally curved, and supported by conical muscle structures with visible segmentation. The tail was bifurcate, and each section had a terminal bristle. Information on egg and larval morphology can be useful in the identification of genera and species. The current study provides a description of the eggs and embryos of a Pentastomida species from the Neotropical Region.</p></abstract>

In the current study, the structural characteristics of the egg and larva of the pentastomid Raillietiella mottae (Almeida, Freire, & Lopes 2008), are described and compared with those of other pentastomids. The eggs and larvae were obtained from lizards Phyllopezus periosus (Rodrigues 1986) and Phyllopezus pollicaris (Spix 1825) which were collected in the environmental protection area of Cachoeira de Missão Velha, Ceará state, northeastern Brazil (7° 13’ S; 39° 08’ W). Following collection, the specimens were transported to the Laboratorio de Zoologia (LZ-URCA) and deposited in terrariums to obtain the feces, which were collected and analyzed for the presence of pentastomid eggs. The eggs found were typical of the genus Raillietiella, differing from those of other genera due to the lack of an outer fl exible membrane. The larva had two pairs of limbs, each with a pair of terminal hooks. The limbs were unsegmented, ventrally curved, and supported by conical muscle structures with visible segmentation. The tail was bifurcate, and each section had a terminal bristle. Information on egg and larval morphology can be useful in the identification of genera and species. The current study provides a description of the eggs and embryos of a Pentastomida species from the Neotropical Region.

Description of the egg and larva of <italic>Raillietiella mottae</italic> (Pentastomida: Raillietiellidae)

Helminthologia

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Description of the egg and larva of  (Pentastomida: Raillietiellidae)

In the current study, the structural characteristics of the egg and larva of the pentastomid Raillietiella mottae (Almeida, Freire, & Lopes 2008), are...

Species	Length (μ)	Width (μ)	Host	Author (year)
Raillietiella geckonis	89	70	Gecko verticillatus	Sambon (1922)
Raillietiella kochi	100	80	Varanus ocellatus	Heymons (1926)
Raillietiella affinis	80	60	Gecko verticillatus	Heymons (1935)
Raillietiella chamaeleonis	112	71	Chamaeleo oustaleti / C. verrucosus	Gretillat & Brygoo (1959)
Raillietiella congolensis	75	50	Thelotornis c.oatesis	Fain (1961)
Raillietiella schoutedeni	80	60	Monopeltis schoutedeni	Fain (1961)
Raillietiella boulengeri	85	70	Serpentes do Congo	Fain (1964)
Raillietiella furcocerca	115	88	Clelia clelia	Esslinger (1968)
Raillietiella gehyrae	103	60	Mabuya homalocephala	Pence & Canaris (1973)
Raillietiella gigliolii	127	92	Amphisbaena alba	Winch & Riley (1985)
Raillietiella trachea	167	109.5	Gyps bengalensis	Riley et al. (2003)
Raillietiella morenoi	84.2	53	Gallotia atlântica	Abreu-costa et al. (2005)
Raillietiella mottae	97.68	75.05	Phyllopezus periosus/ P. pollicaris	Current study

Description of the egg and larva of Raillietiella mottae (Pentastomida: Raillietiellidae)

Article Category: Research Article

Published Online: Aug 05, 2020

Page range: 268 - 275

Received: Sep 10, 2019

Accepted: Mar 30, 2020

DOI: https://doi.org/10.2478/helm-2020-0028

Keywords
parasitism, life cycle, neotropical region

© 2020 J. M. Do Nascimento, J. A. De Araújo-Filho, N. K. S. Sampaio, S. V. Brito,W. O. Almeida, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fig. 1

Fig. 2

Fig. 3

Length and width data available for Raillietiella spp. eggs (all measurements given in micrometers, μm).

Description of the egg and larva of Raillietiella mottae (Pentastomida: Raillietiellidae)

Article Category: Research Article

Published Online: Aug 05, 2020

Page range: 268 - 275

Received: Sep 10, 2019

Accepted: Mar 30, 2020

DOI: https://doi.org/10.2478/helm-2020-0028

Keywordsparasitism, life cycle, neotropical region

© 2020 J. M. Do Nascimento, J. A. De Araújo-Filho, N. K. S. Sampaio, S. V. Brito,W. O. Almeida, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fig. 1

Fig. 2

Fig. 3

Length and width data available for Raillietiella spp. eggs (all measurements given in micrometers, μm).

Keywords
parasitism, life cycle, neotropical region