Glyphidrilus elegans 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 : 22

12. Glyphidrilus elegans Rao, 1922 Fig. 14 Table 1

Glyphidrilus elegans Rao, 1922: 62. Type locality: Sandy islets in the Cauvery, Dubari forests. Fraserpett (Coorg); banks of Sheravaty, Shimoga (Mysore).

Glyphidrilus annandalei - Stephenson, 1923: 491. 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: 10 ( Fig. 14 ). The type locality of this species is Sandy islets in the Cauvery, Dubari forests. Fraserpett (Coorg); bank of Sheravaty, Shimoga (Mysore).

Description of Lectotype.

Dimensions: body length 139 mm. Body cylindrical in anterior part, quadrangular in transverse section-behind clitellum. 248 segments. Body colour pale brown. Anus dorsal-terminal. At posterior end dorsal surface considerably broader than the ventral. Clitellar wi on ventro-lateral part of clitellum in 25-31. Prostomium zygolobous. Dorsal pores absent. Clitellum annular in 13-35. 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: lateral paired or asymmetrical on bc in 13-24, and 32-35.

Septa 5/6-8/9 thicker, 9/10-11/12 thick and 12/13 to the last segment thin. Gi small, globular within 8. Intestine enlarged from 13. 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 and accessory glands absent. Sc in 13/14-17/18, two to six on each side per segment.

Remarks.

See Table 1 .

This speciesis known only from the type locality in sandy islets in the Cauvery, Dubari forests and Fraserpett (Coorg); banks of Sheravaty, Shimoga (Mysore).

Figures

Figure 14. Morphology of the lectotype (NHM 1922: 4: 20: 10) of Glyphidrilus elegans Rao, 1922, showing the A external ventral and B internal dorsal views.