Glyphidrilus weberi Horst, 1889

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 : 9-10

1. Glyphidrilus weberi Horst, 1889 Fig. 6 Table 1

Glyphidrilus weberi Horst, 1889: 77. Type locality: Java: Buitenzorg, in humid soil, Sumatra: Manindjan and lake of Singkarah, Flores: Kotting, Celebes: Luwu. Horst 1893: 37, pl. II, figs 15-19, pl. III, fig. 20. Beddard 1895: 679. Michaelsen 1900: 460. Jamieson 1968: 393. Brinkhurst and Jamieson 1971: 766, fig. 15.4J - M.

Material examined.

The specimens which closely matched to the measurements and anatomical characters with the original description is designated herein as the lectotype ZMH V5097 ( Fig. 6 ). The type locality of this species is Buitenzorg Java. Paralectotype: ZMH V5097.1 (2 adults) same locality with lectotype.

Lectotype designation proposed herewith is necessary to ensure the species is based on a complete adult earthworm.

Description of Lectotype.

Dimensions: body length79 mm. Body cylindrical in anterior part, quadrangular in transverse section-behind clitellum. 286 segments. Anus dorso-terminal. The body colour pale brown. At posterior end dorsal surface considerably broader than the ventral. Clitellar wi on ventro-lateral part of clitellum in 23-32. Prostomium zygolobous. Dorsal pores absent. Clitellum annular in 16-32. 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 in segment 8. Female pores, male pores and spermathecal pores not visible. Gm laterally paired or asymmetrical on bc in 15-16.

Septa 5/6-8/9 thicker, 9/10-11/12 thick and 12/13 to the last segment thin. Gi small, globular within ½7-½8. Intestine enlarged from 13. Dorsal blood vessel ante rior to 8. He in 8-11. No distinguishable np in first eleven segments. Sv in 9-12. Ov in 13-14. Testis in 10-11. Prostate and accessory glands absent. Sc in 13/14-17/18, 0.2-0.4 mm in diameter, one to three on each side per segment.

Variation.

Body length of paralectotypes range from79-82 mm, with 283-286 segments, wi in 22, 23- ½32, 32, clitellum in 16-32.

Remarks.

See Table 1 .

This species is known only from several Indonesian locations: the type locality at Buitenzorg in Java, Manindjan and Lake Singkarah in Sumatra, Kotting on Flores and Luwu on Celebes. There are no recent collections with precise locality information.

Figures

Figure 6. External and internal morphology of the lectotype (ZMH V 5097) of Glyphidrilus weberi Horst, 1889, showing the A external ventral and B internal dorsal views.