Longior, Travassos & Kloss, 1958

Morffe, Jans, García, Nayla, Adams, Byron J. & Hasegawa, Koichi, 2020, Three new species of Longior Travassos & Kloss, 1958 (Nematoda Thelastomatoidea: Hystrignathidae) parasites of passalid beetles (Coleoptera Passalidae) from Dominican Republic, Mexico and Colombia, Zootaxa 4877 (1), pp. 125-147 : 145

Key to the females of the genus Longior

1a. Lateral alae extending from a distance posterior to the basal bulb to the level of the anus............................. 2

1b. Lateral alae extending from the level of the vulva to the level of the anus................................ L. semialata

2a. Body longer than 3.000 mm............................................................................. 3

2b. Body shorter than 3.000 mm............................................................................ 6

3a. Genital tract occupying ca. the 20% of the body length................................................ L. longior

3b. Genital tract occupying more than 20% of the body length..................................................... 4

4a. Genital tract occupying ca. the 40% of the body length................................................ L. similis

4b. Genital tract occupying ca. the 30% of the body length....................................................... 5

5a. Excretory pore located at ca. 0.5–0.7 body-widths posterior to the basal bulb....................... L. zumpimito n. sp.

5b. Excretory pore located at ca. 1.5 body-widths posterior to the basal bulb............................... L. longicollis

6a. Body shorter than 2.000 mm; b<4.00................................................................ L. elieri

6b. Body longer than 2.000 mm; b>4.00...................................................................... 7

7a. Genital tract occupying ca. the 35% of the body length......................................... L. lamothei n. sp.

7b. Genital tract occupying ca. the 30% of the body length....................................................... 8

8a. Excretory pore located at ca. half of the body-width posterior to the basal bulb; distal flexure of the ovary ca. one body-width length.................................................................................. L. surieli n. sp.

8b. Excretory pore located at ca. one fifth of the body-width posterior to the basal bulb; distal flexure of the ovary ca. two bodywidths length............................................................................. L. panamensis