Dichogaster bolaui (Michaelsen, 1891)

Kharkongor, Ilona J., 2018, Taxonomic and ecological studies on the earthworms (Annelida: Oligochaeta) of West Khasi Hills District, Meghalaya, Records of the Zoological Survey of India 118 (1), pp. 56-56 : 56-

publication ID	https://doi.org/ 10.26515/rzsi/v118/i1/2018/123034
DOI	https://doi.org/10.5281/zenodo.10989338
persistent identifier	https://treatment.plazi.org/id/F51A944B-FFCF-466E-FCD8-F93D34CC1049
treatment provided by	Felipe
scientific name	Dichogaster bolaui (Michaelsen, 1891)
status

Treatment

23. Dichogaster bolaui (Michaelsen, 1891) View in CoL

1891. Benhamia bolaui Michaelsen, Jb. Hamb. Wiss. Anst. View in CoL , 8: 9. 1900. Dichogaster bolaui : Michaelsen, Tierreich, 10: 340.

Material examined: 1 ex. Regn. No. IV/ANN/NERC-05. India, Meghalaya,WKHDistrict, Nongpyndeng, Nongstoiñ , N25 o 30’38.1”; E91 o 14’25.5”; Alt. 1382m, 26.vi.2010, coll. I.J.Kharkongor and party GoogleMaps ; 3 ex. Regn. No. IV/ANN/ NERC-06. India, Meghalaya, WKH District, Umlieh , Phud Umlieh , N25 o 32’13.7”; E91 o 22’18.3”; Alt. 1573m, 25.vi.2010, coll. I.J.Kharkongor and party GoogleMaps ; 1 ex. Regn. No. IV/ANN/ NERC-11. India, Meghalaya, WKH District, Pamphyrnai , N25 o 32’19.5”; E91 o 20’57.0”; Alt. 1556m, 25.vi.2010, coll. I.J.Kharkongor and party GoogleMaps ; 2 ex. Regn. No. IV/ANN/NERC-24. India, Meghalaya, WKH District, Mawthar village, near Puiñsneiñ stream, N25 o 28’05.0”; E91 o 15’39.0”; Alt. 1407m, 24.vi.2010, coll. I.J.Kharkongor and party; 2 ex. Regn. No. IV /ANN/NERC-35 GoogleMaps . India, Meghalaya, WKH District, banks of Riangdo river, Mawshynrut village , N25 o 40’41.8”; E91 o 03’15.8”; Alt. 913m, 22.vi.2010, coll. I.J.Kharkongor and party; 1 ex. Regn. No. IV /ANN/ NERC-50 GoogleMaps GoogleMaps . India, Meghalaya, WKH District, on way to Nongstoiñ from Markasa GoogleMaps , N25 o 31’51.0”; E91 o 22’58.5”; Alt. 1514m, 25.vi.2010, coll. I.J.Kharkongor and party.

Diagnosis: Length 20-40. Segments 81-95. Epilobic. Lumbricine; setae closely paired. Dorsal pores from 5/6. Spermathecal pores paired in furrows 7/8/9. Clitellum 13-18 or 14-18, 19 or 20, with the intersegmental furrows obliterated. Female pore single and median, in 14. Male pores paired, in slightly concave grooves, on 18.

Gizzard in 7 and 8. Ovaries paired in 13.

Distribution: INDIA: Meghalaya (EKHD, WGHD, WKHD), Andaman and Nicobar Islands, Andhra Pradesh, Arunachal Pradesh, Goa, Gujarat, Haryana, Himachal Pradesh, Karnataka, Kerala, Madhya Pradesh, Maharashtra, Orissa, Rajasthan, Sikkim, Tamil Nadu, Uttar Pradesh and West Bengal. Elsewhere: Africa, Australia, Bangladesh, China, Finland, Germany, Hainan, Indonesia, Islands of the Pacific Ocean, Japan, Madagascar and its adjacent islands, Malay Peninsula, Myanmar, North America, Pakistan, Philippines, South America, Sri Lanka, Vietnam and West Indies.

Remarks: An epi-endogeic species with a wide range of climatic and edaphic tolerance. Csuzdi et. al. (2008) has defined it as the first domicole earthworm species for its ability to invade and thrive in urban dwellings. This adaptation makes it a good candidate for use in sewage treatment and waste management processes. Recorded, herein, for the first time from WKHD.