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Scutellonema paralabiatum sp. n., S. propeltatum sp. n. and Bitylenchus singularis sp. n. found associated with pigeonpea in Kenya

M. R. Siddiqi, S. B. Sharma

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Abstract

Scutellonema paralabiatum sp. nov., S. propeltatum sp. nov. and Bitylenchus singularis sp. nov. collected from pigeonpea soil in Kenya are described and illustrated. S. paralabiatum has 4-6 µm long epiptygma projecting from the vulva, a continuous cephalic region with 4-5 annules, 25-28 (26.6) µm long stylet, phasmids 3.4-3.8 (3.5) µm in diameter and located just preanally and lateral fields in the phasmid region not areolated, female tail shorter than anal body width, spermathecae lacking sperms and no males. S. propeltatum has a continuous cephalic region with 4-5 annules, 22-25 (23.3) µm long female stylet, epiptygma not projecting through vulva, phasmids well anterior to anal level at 25-38 (30.4) µm from female tail tip, lateral field not areolated on female tail and males with 25-28 (26.5) µm long spicules and 15.5-16.5 (16) µm long gubernaculum. B. singularis has stylet 13-14 µm long with large knobs about 4 µm across, cephalic region offset by a sharp constriction and bearing 8-9 fine annules, a subcylindroid female tail with smooth terminus and 36-46 (40) annules, measuring 2.0-2.6 (2.3) anal body widths long and no males

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Scutellonema paralabiatum sp. nov., S. propeltatum sp. nov. and Bitylenchus singularis sp. nov. collected from pigeonpea soil in Kenya are described and illustrated. S. paralabiatum has 4-6 µm long epiptygma projecting from the vulva, a continuous cephalic region with 4-5 annules, 25-28 (26.6) µm long stylet, phasmids 3.4-3.8 (3.5) µm in diameter and located just preanally and lateral fields in the phasmid region not areolated, female tail shorter than anal body width, spermathecae lacking sperms and no males. S. propeltatum has a continuous cephalic region with 4-5 annules, 22-25 (23.3) µm long female stylet, epiptygma not projecting through vulva, phasmids well anterior to anal level at 25-38 (30.4) µm from female tail tip, lateral field not areolated on female tail and males with 25-28 (26.5) µm long spicules and 15.5-16.5 (16) µm long gubernaculum. B. singularis has stylet 13-14 µm long with large knobs about 4 µm across, cephalic region offset by a sharp constriction and bearing 8-9 fine annules, a subcylindroid female tail with smooth terminus and 36-46 (40) annules, measuring 2.0-2.6 (2.3) anal body widths long and no males

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Available abstract

Scutellonema paralabiatum sp. nov., S. propeltatum sp. nov. and Bitylenchus singularis sp. nov. collected from pigeonpea soil in Kenya are described and illustrated. S. paralabiatum has 4-6 µm long epiptygma projecting from the vulva, a continuous cephalic region with 4-5 annules, 25-28 (26.6) µm long stylet, phasmids 3.4-3.8 (3.5) µm in diameter and located just preanally and lateral fields in the phasmid region not areolated, female tail shorter than anal body width, spermathecae lacking sperms and no males. S. propeltatum has a continuous cephalic region with 4-5 annules, 22-25 (23.3) µm long female stylet, epiptygma not projecting through vulva, phasmids well anterior to anal level at 25-38 (30.4) µm from female tail tip, lateral field not areolated on female tail and males with 25-28 (26.5) µm long spicules and 15.5-16.5 (16) µm long gubernaculum. B. singularis has stylet 13-14 µm long with large knobs about 4 µm across, cephalic region offset by a sharp constriction and bearing 8-9 fine annules, a subcylindroid female tail with smooth terminus and 36-46 (40) annules, measuring 2.0-2.6 (2.3) anal body widths long and no males

Key concepts: Stylet, Spermatheca, Biology, Anatomy, Gubernaculum, Botany, Sperm

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Scutellonema paralabiatum sp. n., S. propeltatum sp. n. and Bitylenchus singularis sp. n. found associated with pigeonpea in Kenya — Research Paper | ScholarLens