The genus is one of the two genera in family Encyclometridae, known for parasitising the oesophagus, stomach and intestine of snakes. Among , the species present are: , , and . Species discrimination within has predominantly relied on morphological differences, such as the length of the caeca and the position of the testes. Morphological overlaps exist among these species making species discrimination challenging. Additionally, the use of molecular information has been limited for . To determine the species infecting from Thailand and Cambodia, morphological and molecular identification was conducted. Morphological characters and measurements were obtained from 30 adults, and they were compared with previous studies of other species. Novel sequences of were generated using the nuclear 18S and 28S ribosomal RNA genes, and the mitochondrial cytochrome c oxidase subunit 1 gene. Our results revealed that the specimens could be morphologically identified as , with support from molecular information obtained from the phylogenies of the 3 genetic markers employed. Molecular analysis showed that the specimens were distinct from and . Through morphological and molecular identification of the specimens found in from Thailand and Cambodia, we describe and provide a record of in a new host and new locality. Additionally, novel molecular sequences were generated, revealing the phylogenetic position of within the superfamily Gorgoderoidea.
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| http://dx.doi.org/10.1017/S0031182023001166 | DOI Listing |
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