Heligmonina cricetomyos (Durette-Desset, Marie-Claude & Digiani, Maria Celina 2010)
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Ordo: Rhabditida
Familia: Heligmonellidae
Genus: Heligmonina
Name
Heligmonina cricetomyos Baylis, 1928 – Wikispecies link – Pensoft Profile
- Heligmonina cricetomyos Durette-Desset, Marie-Claude, 2010, Zootaxa 2494: 7-9.
Description
The type-material was made up of three males (slides 131, 132, 133) parasites from the small intestine of one Cricetomys emini n° 14, from Adu. Baylis (1928) identified this species in four other Cricetomys emini, three from Adu (n° 197, n° 359, n° 363) and the fourth from Ife (n° 439) and in one Cricetomys gambianus (Cricetomys buchanani Thomas & Hinton on the label) (n° 481) from Kano, all from the small intestine. Baylis indicated that the synlophe was made up of a left ala of 80-150 µm (without specifying the sex) and 8– 10 inconspicuous ridges. The metrical data provided by Baylis concern both sexes.
Figures 3, 4, slide 148, Figure 5, slide 144, Figures 7, 9, slide 147. Figure 8, slide 142 from Oenomys hypoxanthus n° 418. Figure 6, voucher material from Oenomys hypoxanthus MNHN755 M. Abbreviations: v: ventral side, r: right lateral side. For the males, the description was probably based only on the syntypes, since we obtained the same measurements from this material, even though unfortunately, on these slides, the spicules were not observable anymore. With regard to the males from the voucher material, we identified as H. cricetomyos the male (slide 140) parasitic in C. emini n° 359 and the male (slide 141) parasitic in C. gambianus n° 481. In both cases, the spicule length (370, 370) and the ratio SpL/BL (7.2, 7.5 %) correspond to the data provided by Baylis (spicule length 400–450, ratio SpL/BL 7.5–9 %). Regarding the females Baylis (1928) wrote «Vulva about 0.2 mm from posterior end; cuticle sometimes much inflated in front of vulva». The vulva was situated at about this level in the voucher females from C. emini n° 197 and n° 359. Therefore this is the material which must be identified as Heligmonina cricetomyos. In the voucher females from C. emini n° 363, it was not possible to observe the position of the vulva but they are differentiated from the females of H. cricetomyos by the position of the ventral prevulvar ala which is 110, 120 µm from the posterior end versus 280 µm in H. cricetomyos. In addition the shape of the prevulvar ala was different in both species. Therefore these specimens may belong to another species of Heligmonina. It was not possible to identify the male and the three females (slide 135) parasitic in C. emini n° 439 from Ife.
Host - Locality Slide Specimens Baylis’ identification Present identification Oenomys hypoxanthus nº 142 Male1Hi. oenomyos Neoheligmonella sp. 1 N° 418 - Ife Male 2Hi. oenomyos Neoheligmonella sp. 1 Female 1Hi. oenomyos Neoheligmonella sp. 1Type host for Heligmonina nº 143 Female1Hi. oenomyos Neoheligmonella sp. 1oenomyos nº 144 Male1 * Hi. oenomyos Hi. oenomyos nº 147 Female1Hi. oenomyos Neoheligmonella sp. 1 Female 2 ** Hi. oenomyos Hi. oenomyos nº 148 Female1 ** Hi. oenomyos Hi. oenomyos Female 2 ** Hi. oenomyos Hi. oenomyos ** the female chosen as paralectotype of Heligmonina oenomyos (female 2 on slide nº 147) is 3.7 mm long and lacks vulvar alae.
Host - Locality Slide Specimens Baylis’ identification Present identification Cricetomys emini nº 131 Male1 * Hi. cricetomyos Hi. cricetomyos N° 14 - Adu nº 132 Male1 ** Hi. cricetomyos Hi. cricetomyos Type host for Heligmonina nº 133 Male1 ** Hi. cricetomyos Hi. cricetomyos cricetomyos Cricetomys emini n° 136 Female1Hi. cricetomyos Hi. cricetomyos N° 197 - Adu Female 2Hi. cricetomyos Hi. cricetomyos n° 74 Male1Hi. cricetomyos Ne.moennigi n° 75 Male1Hi. cricetomyos Ne.moennigi Cricetomys emini nº 137 Female1Hi. cricetomyos unidentifiable N° 359 - Adu nº 138 Male1Hi. cricetomyos unidentifiable n° 139 Female1Hi. cricetomyos Hi. cricetomyos n° 140 Male1Hi. cricetomyos Hi. cricetomyos Cricetomys emini n° 134 Female1Hi. cricetomyos Heligmonina sp. 1 N° 363 - Adu Female 2Hi. cricetomyos Heligmonina sp. 1 Cricetomys emini nº 135 Male1unidentifiable N° 439 - Ife Female 1 unidentifiable Female 2 unidentifiable Female 3unidentifiable Cricetomys gambianus (syn n° 141 Male1Hi. cricetomyos Hi. cricetomyos C. buchanani) N° 481 - Kano
Taxon Treatment
- Durette-Desset, Marie-Claude; Digiani, Maria Celina; 2010: Taxonomic revision of the type specimens of Ethiopian Nippostrongylinae (Nematoda) deposited at the Natural History Museum of London, Zootaxa 2494: 7-9. doi
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