Chumma bicolor, Jocqué & Alderweireldt, 2018

Jocqué, Rudy & Alderweireldt, Mark, 2018, New Chummidae (Araneae): quadrupling the size of the clade, European Journal of Taxonomy 412, pp. 1-25 : 2-4

Key to the species of Chumma

Species included:

C. bicolor sp. nov. ♀

C. foliata sp. nov. ♂ ♀

C. gastroperforata Jocqué, 2001 ♂ ♀

C. inquieta Jocqué, 2001 ♂ ♀

C. interfluvialis sp. nov. ♂ ♀

C. lesotho sp. nov. ♀

C. striata sp. nov. ♂ ♀

C. subridens sp. nov. ♂ ♀

C. tsitsikamma sp. nov. ♂

1. Males ………………………………………………………………………………………………2 – Females ……………………………………………………………………………………………8

2. Abdomen with two pairs of deep depressions ( Figs 7B , 11 A–B) …………………………………3 – Abdomen without deep depressions ( Fig. 3A ) ……………………………………………………5

3. Pointed prong of dorsal RTA separate from truncated part and more than half as long ( Fig. 11 C–E) ……………………………………………………………………………… C. tsitsikamma sp. nov. – Pointed prong of dorsal RTA inserted on truncated part and much shorter ………………………4

4. Pointed prong of dorsal RTA inserted near base of truncated part; palpal tibia longer than wide ( Jocqué 2001: fig. 10b–c) ……………………………………… C. gastroperforata Jocqué, 2001

– Pointed prong of dorsal RTA inserted near tip of truncated part; palpal tibia as wide as long ( Fig. 7 C–E) ……………………………………………………………………… C. striata sp. nov.

5. Tegulum with long slender and short sharp processes pointing forward; dorsal part of RTA broad, foliate ( Figs 2B , 3 C–D) ………………………………………………………… C. foliata sp. nov. – Tegulum without pointed processes; dorsal part of RTA smaller …………………………………6

6. Cymbium with retrolateral posterior extension and prolateral basal knob ( Jocqué 2001: fig. 6a–c) …………………………………………………………………………… C. inquieta Jocqué, 2001 – Cymbium without prolateral knob …………………………………………………………………7

7. P III with four prolateral spines; embolus short, not sinuous ( Figs 8C , 9C ) … C. subridens sp. nov. – P III without spines; embolus long, sinuous ( Figs 4C , 5C ) ………………… C. interfluvialis sp. nov.

8. Epigyne with two large openings separated by broad septum ( Fig. 3E ); spermathecae oval, slightly more than their shortest diameter apart ( Fig. 3F ) ……………………………… C. foliata sp. nov. – Epigyne never with large openings; spermathecae not so far apart …………………………………9

9. Dorsum of abdomen with contrasting dark lateral patches ( Fig. 1 A–B); epigyne on either side with group of setae converging toward the centre ( Fig. 2A ); copulatory ducts each with large anterior atrium ( Fig. 1E ) ……………………………………………………… C. bicolor sp. nov.

– Dorsum of abdomen uniform; epigyne without groups of converging setae; copulatory ducts without anterior atrium ……………………………………………………………………………………10

10. Epigyne with dark oval or triangular septum in the middle near posterior margin ( Figs 4E , 6C , 7F ) ……………………………………………………………………………………………………11 – Epigyne without dark central septum ( Fig. 9F ) ……………………………………………………13

11. Scutum covering ¾ of dorsum ( Fig 7A ); white spots behind sockets of dorsal abdominal setae absent; spermathecae subcircular, ¾ of their diameter apart ( Fig. 7G )…………………… C. striata sp. nov.

– Scutum covering at least ¾ of dorsum; white spots behind sockets of dorsal abdominal setae large; spermathecae closer ………………………………………………………………………………12

12. Spermathecae subglobular; with small anterior protuberance ( Fig. 6D ) ………… C. lesotho sp. nov. – Spermathecae oval; without anterior protuberance ( Fig. 4F ) ……………… C. interfluvialis sp. nov.

13. Posterior margin of epigyne deeply incurved leaving membranous area ( Jocqué 2001: fig. 7a) …… …………………………………………………………………………… C. inquieta Jocqué, 2001 – Posterior rim of epigyne not deeply incurved ……………………………………………………14

14. Posterior margin of epigyne with small indentation; with two large dark areas converging towards the back ( Jocqué 2001: fig. 11a); profile of spermathecae in dorsal view almost quadrangular with concave sides ( Fig. 7H ) ………………… C. gastroperforata Jocqué, 2001

– Posterior dark margin of epigyne slightly procurved without indentation; with two widely separated, small dark areas ( Figs 8E , 9F ); profile of spermathecae in dorsal view oval, in front with short straight stretch ( Fig. 9G ) ………………………………………… C. subridens sp. nov.

Figures

Fig. 7. Chumma striata sp. nov. A, F, G. Holotype, ♀. B, E. ♂ (MRAC 169642). C, D. ♂ (MRAC 169733). A. Habitus, dorsal view. B. Habitus, dorsal view. C. Palp, retrolateral view. D. As preceding, dorsal view (arrow indicates posterior spine on RTA). E. As preceding, ventral view. F. Epigyne, ventral view. G. Epigyne, cleared, dorsal view. – H. Chumma gastroperforata Jocqué, 2001, paratype, ♀ (MRAC 131718), epigyne. Scale bars: A–B = 0.5 mm; C–E = 0.2 mm, E–H = 0.1 mm.

Fig. 11. Chumma tsitsikamma sp. nov., holotype, ♂. A. Habitus, dorsal view. B. Anterior part of abdomen, dorsal view. C. Palp, dorsal view. D. As preceding, ventral view. E. As preceding, retrolateral view. Scale bars: A–B = 0.5 mm; C–F = 0.2 mm.

Fig. 3. Chumma foliata sp. nov. A, C–D = holotype, ♂. B, E–F = paratype, ♀. A. Habitus, dorsal view. B. Habitus, dorsal view. C. Palp, dorsal view. D. As preceding, ventral view. E. Epigyne, ventral view. F. Epigyne, cleared, dorsal view. Scale bars: A–B = 0.5 mm; C–F = 0.2 mm.

Fig. 2. A. Chumma bicolor sp. nov., paratype, ♀, epigyne, ventral view. – B–D. Chumma foliata sp. nov., holotype, ♂. B. Palp, ventral view. C. As preceding, retrolateral view. D. Palpal tibia, dorsal view. Scale bars: 0.2 mm.

Fig. 8. A. Chumma striata sp. nov., holotype, ♀, epigyne, ventral view. – B–E. Chumma subridens sp. nov. B–D. Holotype, ♂. B. Palp, retrolateral view. C. As preceding, ventral view. D. Palpal tibia, dorsal view. E. Paratype, ♀, epigyne, ventral view (NCA 2013/4474). Scale bars: 0.2 mm.

Fig. 9. Chumma subridens sp. nov. A, C–E. Holotype, ♂. B, F–G. Paratype, ♀ (NCA 2013/4474). A. Habitus, dorsal view. B. Habitus, dorsal view. C. Palp, ventral view. D. As preceding, dorsal view. E. As preceding, retrolateral view. F. Epigyne, ventral view. G. Epigyne, cleared, dorsal view. Scale bars: A–B = 0.5 mm; C–G = 0.2 mm.

Fig. 4. Chumma interfluvialis sp. nov. A, C–D. Holotype, ♂. B, E–F. Paratype, ♀. A. Habitus, dorsal view. B. Habitus, dorsal view. C. Palp, ventral view. D. As preceding, retrolateral view. E. Epigyne, ventral view. F. Epigyne, cleared, dorsal view. Scale bars: A–B = 0.5 mm; C–F = 0.2 mm.

Fig. 5. A–D. Chumma interfluvialis sp. nov. A–C. Holotype, ♂. A. Palp, prolateral view. B. As preceding, retrolateral view. C. As preceding, ventral view. D. Paratype, ♀, epigyne, ventral view. – E. Chumma lesotho sp. nov., holotype, ♀, epigyne, ventral view. Scale bars: 0.2 mm.

Fig. 1. Chumma bicolor sp. nov., paratype, ♀. A. Habitus, dorsal view. B. Abdomen, dorsal view. C. Habitus, ventral view. D. Epigyne, ventral view. E. Epigyne, cleared, dorsal view. Scale bars: A–C = 0.5 mm; D–E = 0.1 mm.

Fig. 6. Chumma lesotho sp. nov., holotype, ♀. A. Habitus, dorsal view. B. As preceding, ventral view. C. Epigyne, ventral view. D. Epigyne, cleared, dorsal view. Scale bars: A–B = 0.5 mm; C–D = 0.2 mm. Arrows indicate anterior protuberance on spermathecae.