Pristina breviseta Bourne, 1891

Lee, Jeounghee & Jung, Jongwoo, 2016, Faunistic survey on freshwater annelids from Korea, Journal of Species Research 5 (3), pp. 279-288 : 280

2. Pristina breviseta Bourne, 1891 ( Fig. 1B )

Pristina breviseta Bourne, 1891: 353 .

Naidium breviseta Stephenson, 1923: 67 .

Material examined. One individual was collected from Sangcho­ri, Mungyeong­eup , Mungyeong­si , Gyeongsangbuk­do, E: 128°6′41.73″ N: 36°43′47.20″, 3 Jul 2014 (collector: Lee J). This specimen was mounted on a slide and deposited at NIBR ( KOSPIV0000216646 ) .

Remarks. According to Timm (2009), Pristina breviseta has one bifid needle in their dorsal chaetal bundle that is distally curved. Hairs are serrated with one per bundle ( Fig. 1B ). Ventral chaetae have 3 to 5 bifid per bundle that upper teeth are longer than lower. This species has thick curved spermathecal chaetae in mature individuals. Most of appearances of our sample agree with this description. But we can’t observe spermathecal chaetae because our specimen is immature.

World distribution. Sweden, Belarus, Russia, Southern Asia, America.

Figures

Fig. 1. A. Ventral chaetae of Paranais orientalis. B. A dorsal chaetal bundle of Prisitna breviseta. C. Ventral chaetae of P. forelii. D. A dorsal chaetal bundle of P. synclites. E. Ventral chaetae of Aulodrilus pluriseta. F. Dorsal chaetae of A. pluriseta. G. A penial sheath of Limnodrilus maumeensis. H. Chaetae of L. amblysetus. I. A dorsal chaetal bundle of Tubifex ignota. J. Dorsal chaetae of Psammoryctides albicola. K. Spermathecal chaetae of Varichaetadrilus vestibulatus. L. Ventral chaetae of Tasserkidrilus cf. acapillatus. Scale bars=A­D, G, K, L=10μm, E, F=20μm, H-J=1 μm.