Mylonchulidae Jairajpuri, 1969

Gusakov, Vladimir A. & Gagarin, Vladimir G., 2017, An annotated checklist of the main representatives of meiobenthos from inland water bodies of Central and Southern Vietnam. I. Roundworms (Nematoda), Zootaxa 4300 (1), pp. 1-43 : 29

Family Mylonchulidae Jairajpuri, 1969

89. Mylonchulus cf. brachyuris (Bütschli, 1873) Cobb, 1917 — {56, 57} (0, 0, 15, 0; 3)

Population structure and abundance. One female at each site.

Ecology and distribution. Most likely an amphibiont. Dwells mainly in various terrestrial habitats but also occurs in water. Widespread species. Known from many countries on all continents except for Australia and Antarctica ( Zullini & Peneva 2006; Andrássy 2009b; Ahmad & Jairajpuri 2010); recorded in Vietnam as well ( Nguyen 2007).

Remarks. Our females conform in general to the species diagnosis but we failed to observe all morphological details on our mounts.

90. Mylonchulus lacustris (Cobb in Cobb, 1915) Andrássy, 1958 — {71} (0, 0, 0, 9; 1) Population structure and abundance. Single female.

Ecology and distribution. Amphibiont. Occurs in diverse aquatic and terrestrial biotopes. Cosmopolitan. Known to date from all continents except Antarctica ( Zullini & Peneva 2006; Andrássy 2009b; Ahmad & Jairajpuri 2010). Previously recorded in Vietnam ( Nguyen 2007).

91. Mylonchulus mulveyi Jairajpuri, 1970 — {22} (5, 0, 0, 0; 1)

Population structure and abundance. Single female.

Ecology and distribution. Previously found only in soil; our recovery of this species from the center of a small reservoir may indicate its ability to function as an amphibiont. Known from India, Vietnam, Japan (Asia), El Salvador (Central America) and Saint Lucia (Caribbean) ( Nguyen 2007; Olia et al. 2009; Ahmad & Jairajpuri 2010).

Remarks. Males are extremely rare. To date only one specimen has been found and described (Ahmad & Jairajpuri 1979, 2010).

92. Mylonchulus (Cobb, 1916) Altherr, 1953 spp.— {16, 17, 55, 65, 68} (0, 4, 15, 18; 7)

Population structure and abundance. 1 to 2 juveniles of unidentified species in each sample.