Ischnothyreus florence, Edward & Harvey, 2014

Edward, Karen L. & Harvey, Mark S., 2014, Australian Goblin Spiders Of The Genus Ischnothyreus (Araneae, Oonopidae), Bulletin of the American Museum of Natural History 2014 (389), pp. 1-144 : 19-20

Ischnothyreus florence , new species Figure 5 , map 2

TYPE: AUSTRALIA: Northern Territory: Female holotype from Litchfield National Park, Florence Falls, monsoon forest walk,

13.10166 ° S, 130.7825 ° E (6 May 2008, K. Edward and P. Cullen), deposited in MAGNT ( PBI _OON 00025701).

ETYMOLOGY: The specific epithet is a noun in apposition, taken from the type locality.

DIAGNOSIS: Females can be recognized by the thin convoluted duct of the female epigynum region and the small, heavily sclerotized process overhanging the anterior section of a small rounded epigynal atrium (fig. 5E, F). The lateral margins of the carapace are pale olive green with the elevated portion of pars cephalica pale yellow (fig. 5A).

MALE: Unknown.

FEMALE (PBI_OON 25701, fig. 5A–F). Total length 1.50. CEPHALOTHORAX: Carapace lateral margins pale olive green, elevated portion of pars cephalica pale yellow, broadly oval in dorsal view, pars cephalica slightly elevated in lateral view, anteriorly narrowed to 0.49 times its maximum width or less, surface of elevated portion of pars cephalica finely reticulate, sides finely reticulate. Clypeus curved downward in front view, low, ALE separated from edge of carapace by less than their radius; setae dark. Eyes: ALE circular, PME oval, PLE oval; posterior eye row procurved from above; ALE touching, ALE-PLE touching. Sternum longer than wide, yellow; setae dark, evenly scattered. Chelicerae, endites, and labium yellow; setae dark. Labium elongat- ed hexagon, anterior margin indented at middle; with six or more setae on anterior margin. ABDOMEN: Ovoid; dorsum soft portions white. Book lung covers elliptical. Dorsal scutum pale olive green, covering more than 3/4 of abdomen, more than 1/2 to most of abdomen width, middle surface smooth, sides smooth. Epigastric scutum small lateral sclerites absent. Postepigastric scutum pale orange, widely hexagonal, only around epigastric furrow, not fused to epigastric scutum, with short posteriorly directed lateral apodemes. Dorsum, epigastric area and postepigastric area setae dark. LEGS: Pale orange, without color pattern; patella plus tibia I shorter than carapace. Leg spination: femora: I p0-2-0; II p0-1-0; tibiae: I, II p2-2-0; v2-2-0; metatarsi: I, II p1-1-0; v1-1-0. GENITALIA: Ventral view: epigynal atrium small, rounded, overhanging process heavily sclerotized with sinuous anterior edge; convoluted duct much thinner than apodemes (fig. 5E, F); pair of thin sclerotized apodemes extend from either side of epigynal atrium toward epigastric furrow (fig. 5F).

OTHER MATERIAL EXAMINED: AUS- TRALIA: Northern Territory: Douglas Daly, pitfall, 13.83333 ° S, 131.18333 ° E (Oct. 1997, T.B. Churchill, WAM T78979, PBI_OON 00004304), 1 ♀.

DISTRIBUTION: This species is only known from Florence Falls and Douglas Daly in Litchfield National Park, Northern Territory (map 1).

Figures

Fig. 5. Ischnothyreus florence, sp. nov. Holotype female (PBI_OON 00025701): A. habitus, dorsal view; B. habitus, ventral view; C. habitus, lateral view; D. carapace, anterior view; E. epigynum, ventral view; F. epigynum, ventral view. Scale lines 5 0.1 mm.