The earthworm fauna of Palawan, Philippines with description of nineteen new pheretimoid species (Clitellata: Megascolecidae)
Author
Aspe, Nonillon M.
Author
Manasan, Rafael Ethan
Author
Manlavi, Albert B.
Author
Patiluna, Ma. Lotus E.
Author
Sebido, Maria Asela B.
Author
Obusan, Marie Christine M.
Author
Simbahan, Jessica F.
Author
James, Samuel W.
text
Journal of Natural History
2021
2021-07-01
55
11 - 12
733
797
http://dx.doi.org/10.1080/00222933.2021.1923849
journal article
10.1080/00222933.2021.1923849
1464-5262
5463798
Genus
Polypheretima
Michaelsen, 1934
Type
species
Perichaeta stelleri
Michaelsen, 1892
.
Generic
diagnosis
Body cylindrical; setal arrangement perichaetine; annular clitellum covering segments xiv–xvi; pair of male pores in xviii on circular porophores that may be within copulatory bursae; ventral genital markings present or absent; oesophageal gizzard in viii; intestine begins in xv or xvi; nephridia on spermathecal ducts lacking; caeca lacking; male sexual system usually holandric, with testes and funnels enclosed in paired sacs in x and xi; seminal vesicles in xi and xii; spermathecal pores small, spermathecal diverticula simple and usually ectal in origin; prostates racemose; copulatory bursae may or may not be present; ovaries free in xiii; oviducts lead to single or closely paired opening (
Easton 1979
).