Pristina trifida, Collado, Rut & Schmelz, Rüdiger M., 2002

Collado, Rut & Schmelz, Rüdiger M., 2002, Pristina trifida sp. nov., a new soil­dwelling microannelid (Oligochaeta: Naididae) from Amazonian forest soils, with comments on species recognition in the genus, Zootaxa 118, pp. 1-14 : 2-3

Pristina trifida sp. nov.

( Figures 1 , 2, Tables 1, 2)

Holotype. INPA Cat. No. 119, sexually mature specimen.

Type locality: Primary rain forest plot of the SHIFT project ENV 52 study area, 02° 53’47” S, 59° 59’45” W; at km 29 on the road Manaus­Itacoatiara close to the agroforestry research station EMBRAPA­CPAA in the state of Amazonas, Brazil. Soil samples collected in March 1999 by Jörg Römbke, worms extracted from soil in April 1999 in the laboratory of Systematic Zoology, University of Osnabrück.

Paratypes. INPA Cat. No. 120 a­c, 3 sexually mature specimens.

Material examined. Types (living and preserved). Further material: 4 specimens, sexually mature, fixed and embedded for future TEM microscopy; 4 non­sexual specimens, prepared for SEM­microscopy; 2 non­sexual specimens, embedded in glycerine; 5 sexual and non­sexual specimens, squashed for examination of chaetae. All specimens examined alive before fixation or preparation. All specimens from type locality. Two SEM­prepared specimens from soil sample collected in June 1997, all other specimens from soil sample containing the type specimens.

Derivatio nominis. Trifidus (Lat.) = three­split, named after the shape of the needle chaetae tip.

Figures

FIGURE 1. Pristina trifida sp. nov. A. Needle chaeta and proximal shaft of hair chaeta. B. Tip of needle chaeta. C. Ventral chaeta in II. D. Ventral chaeta in III. E, F. Ventral chaetae in posterior segments, different specimens. G. Stomach, drawn from photograph of living specimen. H. Male efferent apparatus, side view. I. Male efferent apparatus, top view. A, F drawn from microscopic photographs of squash preparations. B free­hand drawing from microscopical preparation. C­E drawn from microscopic preparation with the help of a drawing tube. G drawn from photograph of living specimen (body diameter artificially increased due to slight body pressure between slide and coverslip). H, I free­hand drawings from living specimens. Same scale for A, C­F.