Heligmonoides murina Baylis, 1928

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, pp. 1-28 : 23-25

Heligmonoides murina Baylis, 1928

( Tables 6, 11, Figure 35 )

The type material is made up of one male and three females parasitic in one Mus (Nannomys) musculoides ( Leggada musculoides on the label) n° 385 from Ibadan ( Nigeria). Baylis also identified this species in three other M. (N.) musculoides (n° 86, nº 392 and nº 399), all from Ibadan and one Mus (M.) musculus (n° 164) from Adu. In the type material, the spicules of the males were 800 µm long with a SpL/BL of 25% and the females have a thick tail sharp at its extremity and 13– 21 eggs. We identified the two males parasitic in M. (N.) musculoides (n° 392) as Heligmonoides murina since the spicules were 730, 750 long and the SpL/BL of 17.85% for the entire male. In M. (N.) musculoides n° 86 and nº 399 the four females were unidentifiable. In M. (M.) musculus n° 164, only four females out of six were identifiable. We identified them as Heligmonoides murina since the number of eggs was 18–26. Even if it is impossible to count the cuticular ridges, it is possible to observe in all specimens that they are numerous. In Baylis’ description the number is about 30.

Host - Locality Vial / Slide Specimens Baylis’ identification Present identification Mastomys erythroleucus 1929.1. 24 Male 1* He. affinis Ne. affinis - Adu, Oyo 102– 103 Female 1** He. affinis Ne. affinis w/o number Female 2 He. affinis Nippostrongylinae Mastomys erythroleucus 1929.1. 24 Male 1 He. affinis Neoheligmonella sp. - Adu, Oyo 102–103

w/o number

** the female chosen as paralectotype of Neoheligmonella affinis (female 1 in the vial containing two females) is 3.65 mm long and has a left ala.

Host - Locality Slide Specimens Baylis’ identification Present identification Mus (Mus) musculus n° 157 Female 1 Ho. murina Ho. murina N° 164 - Adu Female 2 Ho. murina Ho. murina nº 159 Female 1 Ho. murina Ho. murina Female 2 Ho. murina unidentifiable n° 160 Female 1 Ho. murina Ho. murina Female 2 Ho. murina unidentifiable w/o number - n° 101– 120 Male 1 Hi. cricetomyos Neoheligmonella sp. 5 not specified

Parasite Host Body length Spicules SpL/BL Heligmonina praomyos Praomys tullbergi 2.8–3.15 mm thin, 310–350 µm 9.8–14.8 % Heligmonina oenomyos Oenomys hypoxanthus 3.0 mm 580 µm 19.3% Heligmonina cricetomyos Cricetomys emini 5.1–5.5 mm 370 µm 7.2–7.5% Heligmonina intermedia Lemniscomys striatus 2.3 mm 280–325 µm 12.2% Heligmonina sp. 2 Lemniscomys striatus 3.8 mm thick, 210 µm 5.5% Parasite Host Body length Nº of Tail Prevulvar eggs shape ala

Heligmonina praomyos Praomys tullbergi 4.4, 5.0 mm 16, 19 Sharp, retractile Absent

Heligmonina oenomyos Oenomys hypoxanthus 3.9, 5.3 mm 68, 70 Rounded Absent

Heligmonina cricetomyos Cricetomys emini 6.1–7.7 mm 30–38 Rounded, thick 280 µm

from caudal end

Heligmonina intermedia Lemniscomys striatus 2.7, 3.2 mm 12, 14 Narrow Absent

Heligmonina sp. 1 Cricetomys emini 7 mm 51 Rounded, thick 110–120 µm from caudal end Parasite Host Body length Spicules SpL/BL

Neoheligmonella Mastomys erythroleucus 3.25 mm thick, 380 µm 11.7%

affinis

Neoheligmonella Praomys tullbergi 3.5–4.8 mm 800–950 µm 16.7–24.7%

moennigi Cricetomys emini 4.0, 4.1 mm 1 mm 24.4% Malacomys edwardsi 3.3–4.0 mm 910 µm 27.5%

Neoheligmonella Mus (Nannomys) musculoides 2.7–3.1 mm 280–290 µm 9–10.7%

gracilis

Neoheligmonella Gerbilliscus (T.) kempi 3.9–4.9 mm 240–380 µm 4.9–9.5%

impudica Arvicanthis rufinus 3.2–4.6 mm 230–318 µm 6.3–7.6%

Neoheligmonella Oenomys hypoxanthus 3.7, 3.9 mm 480, 510 µm 13, 13.1%

sp. 1

Neoheligmonella sp. 2 Arvicanthis rufinus 2.2, 2.3 mm 285, 360 µm 12.4, 16.4 %

Neoheligmonella Lemniscomys striatus 3.6–5.7 mm 260–400 µm 6.2–7.0 %

sp. 3

Neoheligmonella Lemniscomys striatus 3.6, 4.5 mm thin, 180, 210 µm 4.0, 5.8 %

sp. 4

Neoheligmonella Grammomys dolichurus 4.8, 5.1 mm 510 µm 10.0, 10.6%

sp. 5

eggs shape

Neoheligmonella Mastomys erythroleucus 3.65 mm 18 Conical, narrow affinis

Neoheligmonella Praomyos tullbergi 4.4–6.4 mm 16, 19 Sharp, retractile moennigi Retractile

Malacomys edwardsi 5.3 mm No data Neoheligmonella Mus (Nannomys) musculoides 3.3 mm No data Narrow gracilis

Neoheligmonella Gerbilliscus (T.) kempi 6.2–8.8 mm 72–>100 Rounded, thick impudica

Arvicanthis rufinus 6.1–9.9 mm No data Neoheligmonella Oenomys hypoxanthus 3.9, 5.3 mm 68, 70 Rounded sp. 1

Neoheligmonella Lemniscomys striatus 4.6–9.4 mm 15–32 Sharp sp. 3

Figures

FIGURES 29 – 35. Figures 29 – 32. Neoheligmonella moennigi (Baylis, 1928). 29, male, anterior extremity, ventral view. 30, 31, male, 30, caudal bursa, dorsolateral right view. 31, one spicule and gubernaculum in situ, right lateral view. 32, paralectotype female, posterior extremity, left lateral view. Figures 33 – 34. Neoheligmonella affinis (Baylis, 1928). 33, paralectotype female, posterior extremity, left lateral view. 34, lectotype male, spicules and gubernaculum in situ, ventral view. Figure 35. Heligmonoides murina Baylis, 1928. Female, posterior extremity, showing the disappearance of cuticular ridges, left lateral view.