New earthworms of the genus Pheretima (Clitellata, Megascolecidae) from Mount Bulusan, Sorsogon Province, Philippines

By

Hong, Yong
James, Samuel W.

Type

Article

Date of Publication

2025-9-24

Original Publication

ZooKeys

Volume

1253

Pages

161--170

Subjects

biodiversity survey , sangirensis-group , Soil fauna , Southeast Asia , taxonomy

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.1253.158651

 

Abstract

Three new species of the genus Pheretima are described from Mount Bulusan, Sorsogon Province, Luzon Island, Philippines: Pheretima bulusanensissp. nov., Pheretima sorsogonensissp. nov., and Pheretima blackbirdensissp. nov. All are in the sangirensis-group of Sims and Easton (1972), which is characterized by having one pair of spermathecal pores in 7/8. The three new species have equatorial unpigmented stripes, the intestinal origin in XVI, spermathecae in VII, and with segmental setal counts all greater than 40. Pheretima bulusanensissp. nov. has copulatory bursae openings 0.19–0.23 circumference apart and septa 8/9/10 present. Pheretima sorsogonensissp. nov. has copulatory bursae openings 0.14 circumference apart and septa 8/9/10 absent. Pheretima blackbirdensissp. nov. has copulatory bursae openings 0.17 circumference apart and septum 9/10 absent.