New Species Of Amynthas, Pheretima And Pleionogaster (Clitellata: Megascolecidae) Of The Mt. Kitanglad Range, Mindanao Island, Philippines Author James, Samuel W. text Raffles Bulletin of Zoology 2004 52 2 289 313 journal article 10.5281/zenodo.4618925 2345-7600 4618925 Pheretima alba , new species ( Figs. 3G, H ) Material examined. – Holotype - preclitellate ( NMA 003985 ), Philippines , Mindanao Island , Bukidnon Province , Mt. Kitanglad Range , 18 km S, 17 km . E of Baungon , 8 9' N , 124 45' E , 1800 m . elevation, coll. D. Balete , no date. Etymology. – The species name refers to its lack of pigmentation. Description. – Unpigmented, body 49 x 2.0 mm (vii), 2.5 (x), 2.3 mm (xxv), 104 segments; body cylindrical in crosssection with long taper towards tail. First dorsal pore 13/14, spermathecal pores paired in 7/8, 0.13 circumference apart, female pore single in xiv, openings of copulatory bursae paired in xviii, 0.10 circumference apart in 3 rd setal line, 0 setae between openings. Setae regularly distributed around segmental equators; 38 setae on vii, 36 setae on xx; in vii ZZ: YZ = 2.0, in xx ZZ: YZ = 2.1, no ventral gaps. Clitellum not developed; no genital markings ( Fig. 3G ). Septa all thin, 8/9, 9/10 not seen. Large gizzard in viii, esophagus with vertical lamellae xi-xiii, intestinal origin xvi, simple caeca originating in xxvii, extending forward to xxv, ventral margin smooth; typhlosole xxvii-lxvi, simple fold 0.25 lumen diameter; 24 longitudinal blood vessels in intestinal wall xxvii- xl. Hearts x-xiii esophageal, though no supra-esophageal vessel visible in x, commissural vessels vi, vii, ix lateral; viii to gizzard; supra-esophageal vessel xi-xiv, extra-esophageal vessel not seen; efferent parieto-esophageal vessels join esophageal wall in xiii. Nephridia of intestinal segments pre-and post-septal at septum-body wall junctions, dense tufts of nephridia on anterior faces of 5/6, 6/7. Ovaries and funnels free in xiii, spermathecae paired, preseptal in vii with nephridia on ducts; each spermatheca with sac-shaped ampulla, broad muscular duct longer than ampulla, stalked diverticulum terminating in sausage-shaped receptacle, stalks with one or two kinks ( Fig. 3H ). Male sexual system holandric, testes and funnels enclosed in paired sacs in x, xi; all sacs separate; seminal vesicles xi, xii with dorsal lobe; vasa deferentia free from body wall en route to ental end of prostatic ducts; each prostate racemose, occupying xvii-xix, bilobed, lobes wrapped around copulatory bursa, stout muscular duct entering apex of vertically-oriented egg-shaped copulatory bursa in xviii; coelomic surface of copulatory bursae muscular, lacking glandular or other projections; no pads, very slender penis from roof of copulatory bursa. Remarks. – This species also keys to the P . sangirensis group in Sims & Easton (1972), but differs from the previously known species in having the combination of paired spermathecae in vii, intestinal origin in xvi, unpigmented body wall, and an egg-shaped copulatory bursa mounted on its apex, which condition it shares with the monothecal P . monoporata . Additional differences from P . paucisetosa are noted above, plus the lack of pads in the copulatory bursae.