New species of Pheretima, pithemera, and polypheretima (Clitellata: Megascolecidae) from Kalbaryo, Luzon Island, Philippines

Eight new species of pheretimoid earthworms collected from Kalbaryo, Ilocos Norte Province, Luzon Island, the Philippines are described herein: four new species of Pheretima, three new species of Pithemera, and one new species of Polypheretima. All the Pheretima species lack genital markings. Pheretima margaritata, new species, Pheretima kalbaryoensis, new species, and Pheretima thaii, new species, have spermathecae in vi-ix, but Pheretima globosa, new species, has spermathecae in vii-ix. The distances between the male pores in Pheretima margaritata, new species, Pheretima kalbaryoensis, new species, Pheretima thaii, new species, and Pheretima globosa, new species, are 2.4 mm, 4.5 mm, 1.4 mm, and 1.7 mm, respectively. Pithemera glandis, new species, and Pithemera fusiformis, new species, have fi ve pairs of spermathecae in v-ix. Pithemera levii, new species, has four pairs in v-viii. Pithemera glandis, new species, has no genital markings, but Pithemera fusiformis, new species, has paired genital markings in xix and xx. Pithemera levii, new species, has paired genital markings in xviii and xix. Polypheretima pagudpudensis, new species, has spermathecae in vi-vii, and genital markings paired in xvii, xix, and xx. Descriptions of the new species are provided, including illustrations of the ventral view, male pore region, and spermathecae.