Keysercypria longiseta ( Klie, 1930 ), 2011

Karanovic, Ivana, 2011, On the recent Cyclocypridinae (Podocopida, Candonidae) with description of two new genera and one new species 2820, Zootaxa 2820 (1), pp. 1-61 : 33

Keysercypria longiseta ( Klie, 1930)

( Figure 15 )

1930 Physocypria longiseta Klie : p. 222, Figs 1–9 .

Redescription. Male: Carapace ovoid in lateral view, with dorsal margin almost evenly rounded. LV overlapping RV on all free margins. RV with marginal tubercles along free margin ( Figure 15G–I ).

A1 ( Figure 15B ): 7-segmented. First segment with one seta anteriorly and two setae posteriorly. Second segment with one anterior seta, plumose and not reaching mid length of following segment. Third segment with one anterior and one posterior seta, both being short and only reaching distal end of the following segment. Fourth segment with two posterior setae, one exceeding distal margin of penultimate segment, other not reaching distal end of following segment, and two long anterior setae. Fifth segment with two long anterior setae and two short posterior setae. Penultimate segment with three anterior setae (one dorsal—alpha seta, and two ventral setae) and two posterior setae. Terminal segment with two long setae, one claw and aesthetasc, ya, which is only slightly longer than terminal segment. Last five segments almost all equally long.

A2 ( Figure 15A ): Exopod consisting of plate, one long and two short setae. First endopodal segment with one ventral seta and total of 5 swimming setae, the most external one missing. Swimming setae by far exceeding distal end of terminal claws. Penultimate segment subdivided with two male sexual bristles (transformed setae t2 and t3), seta t4 being long and almost reaching tips of terminal claws. Seta t1 short and reaching distal end of penultimate segment and accompanied with short claw covered with small setules. Setae z1 and z2 transformed in claws, former one being short, latter one long. Seta z3, normally developed and long. Claw G2 long, while G1 reduced and half as long as G2. Claw GM and Gm almost equally long. Terminal segment very long and practically consisting of two parts: proximal, short part with y3 distally, and distal long part (twice as long as proximal one) with Gm and GM claws. Aesthetasc Y very short.

Prehensile palps ( Figures 15E, F ): Right palp ( Figure 15E ) much more robust than left one ( Figure 15F ), finger with a little horn-shaped process dorsally, one terminal seta broad and well sclerified, other short and thin. Left palp with thin finger and one terminal setae distinguishable on the slide.

T2 ( Figure 15D ): Basal seta missing. Setae “e” and “f” reaching distal end of following segments. Seta “h3” on terminal segment almost reaching half the L of terminal claw. Terminal claw poorly serrated and as long as three distal segments combined. T2 covered with long and dense pseudochaetae, setae “e” and “f” plumose.

Hemipenis ( Figure 15C ): Lobe “a” distally rounded, lobe “b” pointed. Both lobes of same H.

Zenker organ: Consisting of seven whorls of spines.

Remarks and affinities. Keysercypria longiseta ( Klie, 1930) is closely related to K. affinis ( Klie, 1933) , K. xanabanica (Furtos, 1936) , K. deformis ( Klie, 1940) , and K. sanctaeannae ( Margalef, 1961) as it has tubercles along the free margin on the RV. The other three species of the genus do not have those tubercles well developed. It differs from K. xanabanica and K. deformis by a much longer posterior seta on the UR, and from both K. deformis and K. affinis by a presence of a horn-shaped process on the dorsal margin of the right prehensile palp and the presence of a short “h3” seta on the T2. Keysercypria sanctaeannae apparently misses the lobe “a” on the hemipenis, which is in fact the only difference between the two species. However, this feature is dubious, and it may be that the lobe was just folded and not observable on the slide. If this is the case, there is no doubt that K. sanctaeannae is only a junior synonym of K. longiseta , especially as the appearance of other soft parts (including the typical hornshaped process on the dorsal margin of the right prehensile palp) and carapace are identical in the two species.

Figures

FIGURE 1. A, Cyclocypris washingtoniensis Dobbin, 1941, syntype (male, SMNH 335865); B, C, E, H, I, Cyclocypris sharpei Furtos, 1933, B, C, E Paratype (♂, SMNH 67879), H, I paratype (♂, SMNH 67920); D, F, G, C. cruciata Furtos, 1935 holotype (♂, SMNH 71416): A—left prehensile palp, B—T3, without basal segment, C—T2; D, E—UR, F—LV, interior view (valve broken), G—RV, interior view; H—LV, interior view; I—RV, interior view. Scales = 0.1 mm.

FIGURE 2. Cyclocypris pusilla Sars, 1895, type (NHMO F11355): A—carapace, dorsal view; B—carapace, exterior view from the left side (carapace slightly tilted); C—T2, D—UR; E—T3, withouth basal segment; F—hemipenis, outline only. Scales = 0.1 mm.

FIGURE 3. Distribution of the genus Cyclocypris Brady & Norman, 1889: 1—C. ampla Furtos, 1933; 2—C. brevisetosa Bronstein, 1928; 3—C. diebeli Absolon, 1978; 4—C. forbesi Sharpe, 1897; 5—C. globosa (Sars, 1863); 6—C. laevis (O.F. Müller, 1776); 7– C. mediosetosa Meisch, 1987; 8—C. modesta (Herrick, 1887); 9—C. nahcotta Dobbin, 1941; 10—C. ovum (Jurine, 1820); 11—C. pusilla Sars, 1895; 12—C. scrobiculata Klie, 1936; 13—C. serena (Koch, 1838); 14—C. sharpei Furtos, 1933; 15—C. vinyardi Külköylüoĝlu, 2008. Note: C. laevis and C. ovum are distributed in the entire Holarctic and the dotted line is only approximate distribution of the two species.

FIGURE 4. Cypria karamani Petkovski, 1976: SEM-image, dorso/lateral view.

FIGURE 5. A–D, Cypria maculata Hoff, 1942, A, C holotype (♀, SMNH 81083), B, D allotype (♂, SMNH 81084); E-F, C. palustera Furtos, 1935, paratype (♂, SMNH 71410); G-I, Cypria spinifera Tressler, 1937, type (♀, SMNH 71504): A—LV, interior view; B—UR of ♂; C—UR and genital field of ♀: D, E—hemipenis (arrow on E showing well sclerotized parts); F, G—T2; H—UR and genital field of ♀; I—RV, interior view. Scales = 0.1 mm.

FIGURE 6. Cypria pustulosa Sharp, 1897, A, B, C, D, F, G, H (♂, SMNH 111402), E (♀, SMNH 111407): A—RV, interior view; B—LV, interior view; C—T2; D—hemipenis; E—UR and genital field; F—UR; G, H—prehensile palps. Scales = 0.1 mm.

FIGURE 7. Cypria pusilla Sars, 1896 (NHMO F11601): A—carapace, exterior view from the left side (microphotograph); B—T2, C—A2; D—A1, not all setae drawn; E—T3; F—two terminal segments of Md-palp, without setae drawn. Scales for B- F = 0.1 mm.

FIGURE 8. A, Cypria kerkyirensis (Klie, 1936), syntypes (♂, ZMH 539a); B-E, C. brevisetigera Cole, 1965, A, B, D, holotype (♀, SMNH 120555), C, allotype (♂, SMNH 120556): A—T2, without basal segment, showing the intermediate L of the seta “e”; B—UR; C—hemipenis, outline only; D—T2, without basal segment, showing the short seta “e”; E—T3, showing the absence of the “d2” seta. Scales = 0.1 mm.

FIGURE 9. Digital photograph of original slides. A-C—C. koenikei Daday, 1910 (HNHM IV/P 106, 107); D—[not] Cypria lenticularis G.W. Müller, 1898 (HNHM IV/P 108); E, F—Physocypria castanea (Brady, 1904), ♀ (HNHM IV/P 104): A—Carapace, exterior view from the right side, RV partly broken; B—paired hemipenis; C, D - Zenker organ, showing the presence of numerous chitinous whorls of spines; E—T2, showing the presence of the “d1” seta; F—UR, proximal part not visible.

FIGURE 15. Keysercypria longiseta (Klie, 1930). A-F, lectotype ♂ (ZMH 937a); G-I. paralectotype ♀ (ZMH 937b): A—last two segments of A2; B—last five segments of A1; C—hemipenis; D—T2; E—right prehensile palp; F—left prehensile palp; G—LV; H—RV, I—carapace, dorsal view. Scales = 0.1 mm. G-I modified after Klie (1930) and not to scale.