Condyloderes setoensis, Adrianov, Murakami & Shirayama, 2002

Neuhaus, Birger, Zotto, Matteo Dal, Yamasaki, Hiroshi & Higgins, Robert P., 2019, Revision of Condyloderes (Kinorhyncha, Cyclorhagida) including description of Condyloderes shirleyi sp. nov., Zootaxa 4561 (1), pp. 1-91 : 40

Re-description of Condyloderes setoensis based on type material

( Figs 19–21 ; Tables 1, 2, 7)

Diagnosis. Neck placids with condyles in one basal row in narrower placids and in three rows in broader placids; each narrower placid with one basal condyle; each broader placid with two condyles each in apical, intermediate, and basal row; midventral placid with three condyles in apical and basal row and two in intermediate row; acicular spine middorsally on segments 1–10, midterminally on segment 11, lateroventrally on segments 1–9, midterminally on segment 11, and laterodorsally on segment 10; cuspidate spine ventrolaterally on segments 2, 5 and 9, and lateral accessorily on segment 8 and sometimes on segment 4; type-5 (?) sensory spot ventromedially on segment 11; type-6 sensory spot ventromedially on segments 1 (slightly more paraventrally) and 2–9, lateroventrally on segment 10, sublaterally on segments 1–3, 5–7 and 9, midlaterally on segments 1 and 2, laterodorsally on segments 2–9, subdorsally on segment 10, and paradorsally on segments 1 (almost subdorsally), 2–9; gland cell outlet ventromedially on segment 10.

Material examined. Three paratypic males (MIMB AVA-CM-JAP-02, AVA-CM-JAP-03, AVA-CM-JAP-04) mounted for light microscopy ( Fig. 1 ; Table 1).

Figures

FIGURE 1. Map of locations of all known species of Condyloderes identified to species level; see Table 1 for location data. Filled symbols indicate specimens studied in this article, open symbols refer to specimens not investigated here.

FIGURE 19. Condyloderes setoensis. A, B. Habitus of paratypic male (AVA-CM-JAP-03) in ventral (A) and dorsal (B) view. Cuspidate spines highlighted by grey colour. Scale bar 100 µm, valid for A and B. Abbreviations: ac, acicular spine; cu, cuspidate spine; gc, gland cell outlet; ld10, laterodorsal spine of segment 10; ltas, lateral terminal accessory spine; md3, middorsal spines of segment 3; mts, midterminal spine; ne, protonephridial openings; ssp3, type-3 sensory spot.

FIGURE 20. Condyloderes setoensis, paratypic males (AVA-CM-JAP-02, A, C–I; AVA-CM-JAP-03, B) in dorsal (A, B, I) and ventral (C–H) view, DIC. A–C. Neck showing placids and interstitial placids (B). D. Lateral terminal accessory spine with two thin areas (arrows). E. Segments 1–3; arrows mark reduced free flap. F. Segments 4–6; note existence of lateral accessory cuspidate spine on right side of segment 4 only. G. Segments 7 and 8. H. Segments 9–11. I. Segments 1–3. Arrowheads in A and E–I mark type-6 sensory spots. Scale bar in D 20 µm. Scale bar in H 50 µm, valid for A–C and E–I. Abbreviations: bpl, broader placid; co, condyle of placid; cu, cuspidate spine; dv, attachment area of dorsoventral muscle; fa, filamentous appendage of trichoscalid; ff, free flap; gc, gland cell outlet; ip, interstitial placid; ltas, lateral terminal accessory spine; lv1, lateroventral spine of segment 1; mdpl, middorsal placid; mts, midterminal spine; mvpl, midventral placid; npl, narrower placid; s3, segment 3; ssp3, type-3 sensory spot; tr, trichoscalid.

FIGURE 21. Condyloderes setoensis, paratypic males (AVA-CM-JAP-02, A–C; AVA-CM-JAP-03, D) in dorsal (A–C) and ventral (D) view, DIC. A. Segments 4–6. B. Segments 7 and 8. C. Segments 9–11. D. Segments 4–6; note lack of lateral accessory cuspidate spine on segment 4. Arrowheads in A–D mark type-6 sensory spots. Scale bar in D 50 µm, valid for A–D. Abbreviations: cu, cuspidate spine; dv, attachment area of dorsoventral muscle; ff, free flap; ld10, laterodorsal spine of segment 10; lv4, lateroventral spine of segment 4; md5, middorsal spine of segment 5; s3, segment 3.