Cavisternum toadshow, Baehr & Harvey & Smith, 2010

Baehr, Barbara C., Harvey, Mark S. & Smith, Helen M., 2010, The Goblin Spiders of the New Endemic Australian Genus Cavisternum (Araneae: Oonopidae), American Museum Novitates 3684, pp. 1-40 : 38

Cavisternum toadshow , new species

Figures 24 , 166–170 , map 3

TYPES: AUSTRALIA: Queensland: Male holotype from W of Normanton on Burketown –Normanton Road, 17 ° 50 9 19 0 S, 140 ° 51 9 34 0 E, 23 m (5 July–12 Sep. 2006, R. Raven, B. Baehr, A. Amey) (PBI_OON 00006053), deposited in QM ( S75094 ). Female allotype collected with holotype (PBI_OON 00023344), deposited in QM ( S86478 ) .

ETYMOLOGY: The specific name is a patronym in honor of Toadshow Ltd , a multimedia, web design, and print services company based in Brisbane, Queensland, and a supporter of spider taxonomy.

DIAGNOSIS: Males of C. toadshow resemble C. foxae in having a long sternal concavity, but the patch of clavate setae is anteriorly oval in C. toadshow , does not reach the anterior margin, and is without a median band (fig. 24); the fangs are long and crossed with laterally directed tips (fig. 24). Females can be easily distinguished from all other Cavisternum species by their rectangular dark epigastric field (fig. 169).

MALE: Total length 1.15. Carapace 0.50 long, 0.39 wide; abdomen 0.65 long, 0.33 wide. Carapace, sternum, mouthparts, and abdominal scutae pale orange, legs yellow. Sternum longer than wide, with long oval field of clavate setae, covering about half of sternum width. Concavity fully covered with clavate setae (fig. 24). Chelicerae straight, fangs directed posteriorly, extremely long, crossed, with tips directed outward. Abdomen cylindrical, epigastric scutum not protuding. Cymbium-bulb complex oval with thin, medially bent embolus and rounded basal projection (figs. 166–168).

FEMALE: Total length 1.12. Carapace 0.49 long, 0.38 wide; abdomen 0.63 long, 0.35 wide. Coloration as in male. Epigastric area with dark rectangular field, copulatory duct relatively short and the same width at each end (figs. 169, 170).

OTHER MATERIAL EXAMINED: AUSTRALIA: Queensland: 13 km E of Gulf Development Road East, Normanton , 17 ° 50 9 06 0 S, 141 ° 07 9 20 0 E, 3 m, 4 July–12 Sep. 2006, R. Raven, B. Baehr, A. Amey, 1 ♀ (PBI_OON 00006042) (QM S81361) ; 16 km SSW of Normanton on road, 17 ° 48 9 20 0 S, 141 ° 00 9 48 0 E, 29 m, 4 July–12 Sep. 2006, R. Raven, B. Baehr, A. Amey, 1 ³ (PBI_OON 00006225) (QM S75264) ; 1 km E on Gulf Development Road , S of Normanton, 17 ° 44 9 19 0 S, 141 ° 03 9 08 0 E, 20 m, 4 July–12 Sep. 2006, R. Raven, B. Baehr, A. Amey, 2 ♀ (PBI_OON 00006136) (QM S75171) .

DISTRIBUTION: This species is found in northeastern Queensland near the Gulf of Carpentaria (map 3).

Figures

Figs. 18–25. Cavisternum species, males, sterna and chelicerae, ventral view. 18. C. hughesi (PBI_22901). 19. C. ledereri (PBI_OON 07430). 20. C. maxmoormanni (PBI_OON 06198). 21. C. mayorum (PBI_OON 06167). 22. C. noelashepherdae (PBI_OON 06104). 23. C. rochesterae (PBI_OON 07072). 24. C. toadshow (PBI_OON 06053). 25. C. waldockae (PBI_OON 05444).

Figs. 166–170. Cavisternum toadshow, new species. 166–168. Male palp (PBI_OON 06053). 166. Prolateral view. 167. Retrolateral view. 168. Dorsal view. 169, 170. Female epigyne (PBI_OON 06053). 169. Ventral view. 170. Dorsal view.