Morebilus graytown, PLATNICK, 2002

PLATNICK, NORMAN I., 2002, A Revision Of The Australasian Ground Spiders Of The Families Ammoxenidae, Cithaeronidae, Gallieniellidae, And Trochanteriidae (Araneae: Gnaphosoidea), Bulletin of the American Museum of Natural History 2002 (271), pp. 1-1 : 1-

Morebilus graytown , new species Figures 359–362 ; Map 28

TYPE: Female holotype taken under dry log in Graytown Forest, W Mount Black , 36 ° 49 ̍ S, 144 ° 57 ̍ E, Victoria (Aug. 21, 1977; H. Parnaby), deposited in QMB ( S26733 ) .

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

DIAGNOSIS: Males can easily be recognized by the distally narrowed retrolateral tibial apophysis (fig. 360) and the prong­shaped embolus (fig. 359), females by the triangular epigynal atrium (fig. 361).

MALE: Total length 14. Carapace reddish brown; legs brownish orange, leg I darkest, abdomen gray, lighter ventrally. Leg spination: tibia II v3­2­2; metatarsi II v2­1p­0. Retrolateral tibial apophysis abruptly narrowed at about half its length (fig. 360); embolus with wide base, distally narrowing into short prong, prolateral portion of median apophy­ sis much wider than retrolateral portion (fig. 359).

FEMALE: Total length 18. Coloration and leg spination as in male. Epigynum with triangular atrium, anterior portion narrow, with arched hood, posterior portion depressed laterally (fig. 361); body of spermathecae situated posterior of atrium, anterior portion with anterolaterally directed heads (fig. 362).

OTHER MATERIAL EXAMINED: South Australia: American River, Kangaroo Island , 35 ° 47 ̍ S, 137 ° 46 ̍ E, Nov. 27, 1952, under stone (B. Main, WAM 96 /1591), 1♀, Aug. 1971 (J. Forrest, SAM N1999 /53), 1♀ ; Burnside, 34 ° 56 ̍ S, 138 ° 38 ̍ E, c. 1885 (O. Tepper, SAM N1999 /56, 57), 2♀ ; Clare , 33 ° 50 ̍ S, 138 ° 37 ̍ E, late July 1994 (A. Shannon, SAM N1999 /58, 59), 2♀ ; Greenly Island, off Port Lincoln , 34 ° 38 ̍ S, 134 ° 47 ̍ E, Dec. 1947 ( SAM N1999 /60, 61), 2♀ ; Kangaroo Island , no exact locality, Mar. 9, 1884 (O. Tepper, SAM N1999 /52), 1♀ ; Kangaroo Island , 35 ° 50 ̍ S, 138 ° 03 ̍ E, Feb. 3, 1957, under loose rocks in pasture (G. McIntosh, AMS KS35553 ), 2♀, with eggsacs ; Morialta, Adelaide foothills, 34 ° 54 ̍ S, 138 ° 43 ̍ E, Nov. 1996, under rocks (D. Hirst, SAM N1996 / 146, 147), 2♀ ; Mount Compass, South Mount Lofty Ranges, 35 ° 21 ̍ S, 138 ° 37 ̍ E, 1883 (F. Andrews, SAM N1999 /55), 1♀ ; Mylor, Mount Lofty Ranges , 35 ° 03 ̍ S, 138 ° 46 ̍ E, Sept. 1935 (H. Womersley, SAM N1999 /54), 1♀ ; 4.9 km SE Stoke’s Bay, Kangaroo Island, 35 ° 39 ̍ S, 137 ° 14 ̍ E, Mar. 17–23, 1995 (T. Herbert, SAM N1999 /51), 13. Victoria: Glen Waverly , 37 ° 53 ̍ S, 145 ° 10 ̍ E, Feb. 13, 1978 (V. Salanitri, QMB S26730 ), 1♀ ; Grampian Mountains , 37 ° 24 ̍ S, 142 ° 15 ̍ E, Nov. 1997 (E. Ross, CAS), 1♀ ; 2 km N Porcupine Ridge, N Daylesford , 37 ° 15 ̍ S, 144 ° 11 ̍ E, Aug. 2, 1981, under rock (M. Harvey, D. Cukier, ANIC), 1♀ .

DISTRIBUTION: South Australia and Victoria (map 28).

plagusius but have a more rounded epigynal atrium (fig. 335) and smaller spermathecae (fig. 336).

MALE: Unknown.

FEMALE: Total length 18. Coloration as in M. graytown . Leg spination: tibiae: I v3­2­ 1p; II v3­2­2; metatarsi II v2­1p­0. Epigynal atrium deep, circular, posterior half with distinct ridge along midline (fig. 335); body of spermathecae situated posterior of atrium, anterior portion with hornlike, anteriorly directed heads (fig. 336).

MATERIAL EXAMINED: Victoria: Mount Buffalo , 36 ° 47 ̍ S, 146 ° 47 ̍ E, Jan. 1946 (E. Swarbreck, NMV K0951 ), 1♀ (holotype) ; Preston , 37 ° 45 ̍ S, 145 ° 01 ̍ E, Mar. 31, 1979, in caravan, specimen may have entered the caravan while it was parked at Seymour, 37 ° 02 ̍ S, 145 ° 08 ̍ E ( NMV K3515 ), 1♀ .

DISTRIBUTION: Known only from Victoria (map 29).

Morebilus gramps , new species

Figures 337, 338 ; Map 27

TYPE: Female holotype taken under rock on summit of Mount William, The Grampians , 37 ° 17 ̍ S, 142 ° 36 ̍ E, Victoria (Aug. 27, 1978; M. Harvey), deposited in ANIC .

ETYMOLOGY: The specific name is an arbitrary combination of letters contracted from the type locality.

Morebilus swarbrecki (Dunn and Dunn) , new combination Figures 335, 336 ; Map 29

Rebilus swarbrecki Dunn and Dunn, 1946: 90 , figs. 5–7 (female holotype from Mount Buffalo, Victoria, in NMV, examined).

DIAGNOSIS: Females resemble those of M.

DIAGNOSIS: Females can easily be recognized by the extremely elongated epigynal atrium (fig. 337) and anteriorly curled spermathecal ducts (fig. 338).

MALE: Unknown.

FEMALE: Total length 21. Coloration as in M. graytown . Leg spination: tibiae: I v3­3­2; II v3­4­2; metatarsi: II v2­1p­0. Epigynal atrium extending almost to pedicel, deeply depressed only at posteromedian border, where bordered laterally by elevated, twisted ridges (fig. 337); spermathecal ducts curled anteriorly, almost s­shaped, with anterolaterally directed heads (fig. 338).

OTHER MATERIAL EXAMINED: Victoria: Mount William, The Grampians, 37 ° 18 ̍ S, 142 ° 36 ̍ E, Oct. 3, 1988, under exfoliating rock (C. Watts, SAM N1999/45, 46), 2♀.

DISTRIBUTION: Known only from Victoria (map 27).

Morebilus fitton , new species Figures 363–366 ; Map 27 TYPE : Female holotype taken in rock crevice at Billy Springs , 17 km NW Mount Fitton

Homestead , 29 ° 53 ̍ S, 139 ° 27 ̍ E, South Australia (May 13, 1981; W. Zeidler), deposited in SAM ( N1999 /62) .

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

DIAGNOSIS: Males can easily be recognized by the extremely long embolus (fig. 363) and curved retrolateral tibial apophysis (fig. 364), females by the large, triangular epigynal atrium (fig. 365).

MALE: Total length 15. Coloration as in M. plagusius . Leg spination (legs IV missing): femora: I d3­3­1; II d4­3­1; III d3­1­1; tibiae: I, II v5­4­3; III 1p­1p­1p; metatarsi: I v4­2­ 2; II v3­2­2; III v2­1p­0. Retrolateral tibial apophysis strong, curved, with serrated tip (fig. 364); embolus extremely long, extending almost full length of bulb (fig. 363).

FEMALE: Total length 21. Coloration as in M. plagusius . Leg spination: femora: I d3­2­ 1; II d3­2­2; III d3­2­1; IV d4­2­1; tibiae I, II v3­4­2; metatarsi: I, II v4­2­1p; III, IV v2­ 1p­0. Epigynal atrium wide, triangular, with pair of elevated ridges (fig. 365); invaginated

2002 PLATNICK: LOWER GNAPHOSOID GROUND SPIDERS 141

portion of epigynal atrium with posteriorly directed median projection (fig. 366).

OTHER MATERIAL EXAMINED: South Australia: Chambers Gorge , 30 ° 58 ̍ S, 139 ° 17 ̍ E, Sept. 1975 (H. Mawson, SAM N1999 /63), 1♀ (penultimate but with full epigynum) ; Gammon Ranges , ca. 30 ° 30 ̍ S, 139 ° 30 ̍ E, June 3, 1947, elev. 2500 ft (C. Hutchinson, SAM N1999 /64), 1♀ ; near Greenwood Lodge Motel, Arkaroola Station, Gammon Ranges , 30 ° 20 ̍ S, 139 ° 22 ̍ E, Oct. 27, 1969, under bark, Eucalyptus gillii (G. Gross, SAM N1999 /65), 13 .

DISTRIBUTION: Known only from South Australia (map 27).

Figures

Map 27. Records of Morebilus plagusius (Walckenaer) (circles), M. gramps, new species (square), and M. fitton, new species (stars).

Map 28. Records of Morebilus graytown, new species (squares), M. gammon, new species (star), and M. coolah, new species (circles).

Map 29. Records of Morebilus swarbrecki (Dunn and Dunn) (stars), M. fumosus (L. Koch) (circles), and M. flinders, new species (square).

Figs. 359–362. Morebilus graytown, new species. 359. Left male palp, ventral view. 360. Same, retrolateral view. 361. Epigynum, ventral view. 362. Same, dorsal view.

Figs. 333–338. Epigyna, ventral (top row) and dorsal (bottom row) views. 333, 334. Trachyspina chillimookoo, new species. 335, 336. Morebilus swarbrecki (Dunn and Dunn). 337, 338. M. gramps, new species.

Figs. 363–366. Morebilus fitton, new species. 363. Left male palp, ventral view. 364. Same, retrolateral view. 365. Epigynum, ventral view. 366. Same, dorsal view.