Amynthas sp.

Shen, Huei-Ping & Yeo, Darren C. J., 2005, Terrestrial Earthworms (Oligochaeta) From Singapore, Raffles Bulletin of Zoology 53 (1), pp. 13-33 : 25

Amynthas sp.

Material examined. – 1 immature (dissected) specimen ( ZRC), Kent Ridge Campus of National University of Singapore, coll. K. K. P. Lim & D. C. J. Yeo, 6 Mar.2003 .

Description. – Length 62 mm, diameter 2.59 mm. Segments numbering 95. Prostomium epilobous. First dorsal pore 10/ 11. Number of incomplete annulets 4 in VII, 3 per segment in VIII and IX, 5 in X and XI, inconspicuous, visible in medio-ventrum only. Setal number 49 in VII, 57 in XX, 14 between male pores in XVIII. Spermathecal pores not visible. Male pores not visible, porophore round, small, about 0.25 mm in diameter. Genital papillae absent. Preserved specimen greyish with lighter colour in anterior thirteen segments.

Septa 6/7/8 and 10/11-12/13 thicker, 8/9 and 9/10 absent. Gizzard in IX-X, large, round, yellow. Intestine enlarged from XIV. Intestinal caeca paired in XXVII, each simple, stocky, coarsely granulated, extending anteriorly to XXIV. Esophageal hearts XI-XIII. Meronephridia bush-like mass in intersegmental spaces anterior to 6/7. Spermathecae not visible. Holandry: testis sacs paired in X and XI, rudimentary. Seminal vesicles paired in XI and XII, small, white, about 0.45 mm long. Pseudovesicles of XIII vestigial. Prostate glands confined in XVIII, small, lobed, underdeveloped, ducts short and straight, the entire length of duct and gland about 0.4 mm. Accessory glands absent.

Remarks. – The specimen is too young to permit species identification.