Description of two new and six known amphidelphic species of the genus Dorylaimoides Thorne and Swanger, 1936 (Nematoda: Dorylaimida: Tylencholaimoidea) from the Tropical Rainforest, Western Ghats, India

Abstract

ABSTRACT Two new and six known amphidelphic species belonging to the genus Dorylaimoides from the tropical rainforest, Western Ghats of India, are described and illustrated. Dorylaimoides brevicaudatus sp. nov. is characterised by having a body 0.99–1.1 mm long; lip region offset by slight depression; odontostyle 7.5–8.5 μm long, ventral arm 5.0–5.5 µm long, dorsal arm 6.0–6.5 µm long; odontophore arcuate, 10.5–12.5 μm long; total stylet length 18.5–20 μm; pharynx expanding gradually into a cylindrical basal bulb, 25–30% of total neck length; female genital system didelphic-amphidelphic; tail convex-conoid with rounded terminus; and males with 24.5–30 µm long spicules. Dorylaimoides silvallis sp. nov. is characterised by having a body 1.3–1.4 mm long; lip region continuous; odontostyle 12.5–13.5 μm long, ventral arm 8.5–9.0 µm long, dorsal arm 9.5–10.5 µm long; odontophore arcuate, 14.5–16.5 μm long, total stylet length 27.5–29.5 μm; pharynx expanding abruptly into a cylindrical basal bulb, 31–35% of total neck length; female genital system didelphic-amphidelphic; tail long filiform, 8.6–9.7 times anal body diameter long; and males with spicules 30–32 µm long. Six known species of the genus Dorylaimoides – D. teres, D. micoletzkyi, D. parvus, D. leptura, D. malabaricus and D. mujtabai – are described and illustrated. Dorylaimoides teres is reported here for the first time from India. http://www.zoobank.org/urn:lsid:zoobank.org:pub:0974BA12-57D5-4AFA-8E89-560ABDEF3AB1 http://www.zoobank.org/urn:lsid:zoobank.org:pub:262D02B9-E5CF-429C-B0DF-D1BB42BDB604