Glyphidrilus fluviatilis Rao, 1922

Chanabun, Ratmanee, Sutcharit, Chirasak, Tongkerd, Piyoros & Panha, Somsak, 2013, The semi-aquatic freshwater earthworms of the genus Glyphidrilus Horst, 1889 from Thailand (Oligochaeta, Almidae) with re-descriptions of several species, ZooKeys 265, pp. 1-76 : 20-21

11. Glyphidrilus fluviatilis Rao, 1922 Fig. 13 Table 1

Glyphidrilus fluviatilis Rao, 1922: 53, figs 1, 2, 3A, B, 4A-C. Type locality: Sandy banks of River Harangi, Madapur (Coorg); Cauvery, Fraserpett (Coorg), and Sheravathy, Shimoga (Mysore).

Glyphidrilus annandalei - Stephenson, 1923: 481. Brinkhurst and Jamieson 1971: 755.

Material examined.

The specimen which closely matches the measurements and anatomical characters with the original description is designated herein as the lectotype NHM 1922: 4: 20: 618 ( Fig. 13 ). The type locality of this species is Sandy banks of River Harangi, Madapur (Coorg); Cauvery, Fraserpett (Coorg), and Sheravathy, Shimoga (Mysore). Additional reference specimens: 2 adults (ZMH V9174) from Narayan, Vordevia Dicu.

Description of Lectotype.

Dimensions: body length 272 mm. Body cylindrical in the anterior part but behind clitellum it is quadrangular in transverse section view. 225 segments. Body cylindrical in anterior part, quadrangular in transverse section-behind clitellum. Anus dorsal-terminal. At posterior end dorsal surface considerably broader than the ventral. Clitellar wi on ventro-lateral part of clitellum in 25- ½32. Prostomium zygolobous. Dorsal pores absent. Clitellum annular in 13-38. Four pairs of setae per segment from 2, setal formula aa:ab:bc:cd:dd =1.0:0.5:1.5:0.5:1.0 at segment 8. Female pores, male pores and spermathecal pores not visible. Gm with rim: lateral paired or asymmetrical on bc in 13-24 and 32, 33, median unpaired on aa in 12-22 and 37-39.

Septa 5/6-7/8 thicker, 8/9-9/10 thick and 11/12 to the last segment thin. Gi small, globular within 8. Intestine enlarged from 16. Dorsal blood vessel anterior to 7. He in 7-11. No distinguishable np in first thirteen segments. Sv in 9-12. Ov in 13. Testis in 10-11. Prostate, accessory glands and sc absent.

Variation.

The body length of non type spcimens range from270-275 mm, with 225-385 segments. Wi in 25- ½32, 32, with clitellum in 13-33, 36, 38.

Remarks.

See Table 1 .

This speciesis known from the type locality in sandy banks of river Harangi, Madapur (Coorg); Cauvery, Fraserpett (Coorg), and Sheravathy, Shimoga (Mysore) and Narayan, Vordevia Dicu.

Figures

Figure 13. Morphology of the lectotype (NHM 1922: 4: 20: 618) of Glyphidrilus fluviatilis Rao, 1922, showing the A external ventral and B internal dorsal views.