Cavisternum rochesterae, 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 : 36-37

Cavisternum rochesterae , new species

Figures 23 , 161–165 , map 5

TYPES: AUSTRALIA: Queensland: Male holotype from Mazeppa National Park , S end, 22 ° 16 9 19 0 S, 147 ° 16 9 00 0 E, 240 m (18 Dec. 2000, G. Monteith) (PBI_OON 00007072), deposited in QM ( S78721 ). Female allotype collected with holotype (PBI_OON 00023348), deposited in QM ( S86477 ) .

ETYMOLOGY: The specific name is a patronym in honor of Renee Rochester, a supporter of spider taxonomy.

DIAGNOSIS: Males of C. rochesterae resemble those of C. heywoodi , with the sternal concavity occupying about K of the sternal length and O of the sternal width (fig. 23), and the epigastric scutum slightly protruding. Males of C. rochesterae have larger eyes, short medially directed fangs not reaching the labium (fig. 23), and a long tripartite embolus (figs. 161–163). Females can be easily distinguished by the epigynal semicircular rim and a dark triangular region, with the copulatory duct short, not reaching the tracheal groove (figs. 164, 165).

MALE: Total length 1.17. Carapace 0.52 long, 0.42 wide; abdomen 0.65 long, 0.38 wide. Carapace, sternum, mouthparts, and abdominal scutae orange-brown, legs yellow. Sternum as long as wide with median concavity occupying about K of sternal length and O of sternal width (fig. 23). Cheliceral fangs short, medially directed, not reaching labium, tip not widened; endite with additional toothlike projection dorsally. Abdomen ovoid, epigastric scutum slightly protruding. Cymbium-bulb complex square with additional cymbial prodistal tooth, embolus with three prongs, prolateral one acute and longest, median one half as long, retrolateral one about O as long as prolateral prong (figs. 161–163).

FEMALE: Total length 1.33. Carapace 0.52 long, 0.42 wide; abdomen 0.81 long, 0.37 wide. Coloration as in male. Epigastric area with semicircular rim, reaching apodemes laterally, and a dark triangular region, copulatory duct short, not reaching tracheal groove (figs. 164, 165).

DISTRIBUTION: This species is known only from Mazeppa National Park in mideastern Queensland (map 5).

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. 161–165. Cavisternum rochesterae, new species. 161–163. Male palp (PBI_OON 07072). 161. Prolateral view. 162. Retrolateral view. 163. Dorsal view. 164, 165. Female epigyne (PBI_OON 07072). 164. Ventral view; semicircular rim indicated. 165. Dorsal view.