Tylolaimophorus tegmentum ( Ivanova, 1980 ) Jairajpuri & Ahmad, 1992

Ghaderi, Reza, Asghari, Ramezan & Eskandari, Ali, 2020, Systematics of the genus Tylolaimophorus de Man, 1880 (Nematoda Diphtherophoridae), with description of T. minor (Thorne, 1939) Goodey, 1963 from Iran, Zootaxa 4755 (2), pp. 322-340 : 334-335

publication ID

https://doi.org/ 10.11646/zootaxa.4755.2.7

publication LSID

lsid:zoobank.org:pub:urn:lsid:zoobank.org:pub:321C36EA-3A65-4C43-80AE-5D2C536D2DF9

DOI

https://doi.org/10.5281/zenodo.3812507

persistent identifier

https://treatment.plazi.org/id/03AB87FD-5867-F336-FF31-9572FAEFFE41

treatment provided by

Carolina

scientific name

Tylolaimophorus tegmentum ( Ivanova, 1980 ) Jairajpuri & Ahmad, 1992
status

 

Tylolaimophorus tegmentum ( Ivanova, 1980) Jairajpuri & Ahmad, 1992  

After Ivanova (1980).

MEASUREMENTS

Holotype female: L = 0.72 mm; a = 15; b = 5.0; spear = 16.5 µm; c = 34; c’ = 0.7; V = 57.

20 paratype females: L = 0.61-0.72 mm; a = 11-17; b = 3.0-5.3; body width = (50) µm; spear = 15-17 µm; pharynx = (180) µm; tail = (20) µm; c = 25-39; c’ = 0.6-0.9; V = 51-57.

10 paratype males: L = 0.54-0.61 mm; a = 13-22; b = 3.7-4.6; body width = (35) µm; spear = 14-16 µm; pharynx = (140) µm; tail = (25) µm; c = 17-27; c’ = 0.7-1.2; spicules = 23-27 µm; gubernaculum = 5-7 µm.

DESCRIPTION

Female. Body obese, tapering to both ends. Cuticle fine, detached from body wall at the posterior end. Lip region not offset. Spear thin, with small knobs. Amphids elliptical, prominent, about half body diameter at lip base. Pharynx with thin cylindrical corpus and pear-shaped basal bulb about one-sixth of pharynx length. Excretory pore at 80 µm from anterior end. Vulva slitlike, 7-8 µm wide. Vagina short, sclerotized. Ovaries not observable. Tail shorter than the anal body diameter, cylindrical, rounded at the tip, with the terminal pore. A digitiform appendage bent on dorsal side present.

Male. Spicules short, weakly bent, cephalated, distal tips blunt. Supplements indistinct. Tail shape as in female.

DIAGNOSIS AND RELATIONSHIPS

Tylolaimophorus tegmentum   has been compared with T. pugio   , T. constrictus   , T. digitatus   , T. indicus   , and T. minor   . The first species, T. pugio   , has a longer body (1.0-1.5 vs 0.6-0.7 mm), the lip region of T. constrictus   is offset by a deep groove (vs continuous with the body contour), T. digitatus   and T. indicus   have conical tails (vs cylindrical) and thin rectal walls (vs thick), and T. minor   differs in having a smaller spear (10-12 vs 15-17 µm) and in the absence of males (vs common presence).

DISTRIBUTION

Described from the rhizosphere of Cerasus   sp. on Peter the First Mountain, Tajikistan ( Ivanova 1980).

V

Royal British Columbia Museum - Herbarium