Longrita yuinmery, 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-

Longrita yuinmery , new species Figures 439–442 ; Map 35

TYPE: Male holotype taken in pitfall trap in Eucalyptus gangyocarpa woodland with Triodia at Yuinmery, 28 ° 32 ̍ S, 119 ° 15 ̍ E, Western Australia (Sept. 1981; W. Humphreys), deposited in WAM (99/369).

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

DIAGNOSIS: This species seems to be closest to L. millewa ; males can be distinguished by the much longer embolar tip, which is much narrower at its base (figs. 439, 440), females by the combination of a medially incised epigynal margin and long, curved lateral extensions of that margin (fig. 441).

MALE: Total length 10. Coloration as in L. arcoona . Leg spination: femora: I d3­1­0; II, III d3­1­1; IV d1­1­0. Retrolateral tibial apophysis spear­shaped (fig. 440); embolus with prolateral projection at about one­third its length, tip long, narrow, even at its base (fig. 439).

FEMALE: Total length 15. Coloration as in male. Leg spination: femora: I–IV d3­1­1. Epigynum with large posterior ledge bearing tiny medial incision on anterior margin, continued at sides as strongly procurved ledge, atrial area with transverse striations (fig. 441); membranous sac enclosing ducts widest at about half of epigynal length (fig. 442).

OTHER MATERIAL EXAMINED: Western Australia: Boolathana Station , 24 ° 25 ̍ S, 113 ° 46 ̍ E, Sept. 27–Oct. 2, 1994, dry pitfall (A. Sampey, WAM 99 /381), 13 ; Buntine Rocks Nature Reserve , 29 ° 58 ̍ S, 116 ° 35 ̍ E, Sept. 17, 1996, under rocks (M. Harvey, J. Waldock, WAM 99 /373, 374), 23 ; Bush Bay , 25 ° 05 ̍ S, 113 ° 43 ̍ E, May 20, 1955, camp (P. West, WAM 99 /490), 1♀ ; Bush Bay , 25 ° 07 ̍ S, 113 ° 44 ̍ E, Sept. 27–Oct. 2, 1994, dry pitfalls (M. Harvey, WAM 99 /379, 380), 23 ; Bush Bay, 25 ° 08 ̍ S, 113 ° 46 ̍ E, Sept. 27– Oct. 2, 1994, dry pitfalls (M. Harvey , WAM 99 /375–378), 43, Sept. 28, 1994 – Jan. 16, 1995, pitfall (N. McKenzie, J. Rolfe, WAM 99 /382, 383), 23 ; Kennedy Range National Park , 24 ° 34 ̍ S, 114 ° 57 ̍ E, Oct. 3–8, 1994, dry pitfall (M. Harvey, WAM 99 /384), 13 ; near Mount Evelyn , 25 ° 31 ̍ S, 121 ° 46 ̍ E, Aug. 14, 1991, creek crossing (A. de Jong, WAM 99 / 372), 1♀ ; Merredin Peak , 31 ° 28 ̍ S, 118 ° 18 ̍ E, Mar. 30, 1999, under granite rocks (M. Harvey, B. Durrant, B. Main, WAM 99 /371), 1♀ ; Nerren Nerren Station , 27 ° 00 ̍ S, 114 ° 32 ̍ E, Oct. 15–20, 1994, dry pitfall (J. Waldock, WAM 99 /368), 13 ; Yuinmery , 28 ° 33 ̍ S, 119 ° 06 ̍ E, Sept. 1981, Eucalyptus striaticalyx woodland (W. Humphreys, WAM 99 /370), 1♀ .

DISTRIBUTION: Known only from Western Australia (map 35).

Pyrnus Simon

Pyrnus Simon, 1880: 237 (type species, designat­

ed by Simon, 1893: 347, Hemicloea fulva L.

Koch).

DIAGNOSIS: Members of Pyrnus differ from those of Rebilus and Morebilus in having teeth on the tarsal proclaws.

DESCRIPTION: Medium­sized to large spiders, total length of males 6–10, of females 8–19. Carapace flattened, without tubercles, with rebordered lateral margins, evenly coat­ ed with scattered, dark, stiff, erect setae; few longer, erect, dark setae present (pair at rear of pars cephalica, several at each anterolat­ eral corner and midline of clypeus); thoracic groove long, Y­shaped, wider anteriorly than posteriorly; cephalic groove pronounced, accompanied by three additional intercoxal grooves on each side. Eight eyes in two rows, anterior medians largest, circular, dark, posterior medians smallest, circular, lenses slightly flattened but canoe­shaped tapetum apparently still present, laterals subequal, almost as large as anterior medians, oval; from above, anterior eye row slightly procurved, posterior row slightly recurved, from front, both eye rows almost straight; anterior medians separated by more than their diameter, by more than their diameter from anterior laterals; posterior medians separated by more than four times their diameter, about as far from posterior laterals; anterior and posterior laterals separated by more than their diameter; median ocular quadrangle much wider in back than in front or than long. Chelicerae porrect, divergent, with distinct oblique groove just below clypeus; anterior surface with stiff setae along inner margins; chilum very wide, triangular, almost divided, two halves united by narrow band of cuticle, accompanied by second, elongated, posterior chilum (narrow, I­shaped sclerite separating bases of chelicerae posteriorly); chelicerae with distinct lateral boss, promargin with series of long setae originating in line along base of fang, those nearest base of fang unmodified; promargin with three teeth, proximal tooth smaller than others, distalmost tooth widely separated from other two, retromargin with two widely separated teeth; presumptive cheliceral gland openings on distinct mount, surrounded by concentric ridges, situated proximal to basal retromarginal tooth. Labium rectangular, flat, posterior onequarter narrowed, anterior margin truncate. Endites long, divergent, with oblique depression restricted to their median edge; serrula present (fig. 157), long, oval, sieve plate conspicuous under light microscopy; anteromedian edges and apex bearing wide patch of long, stiff, dark setae. Sternum flat, with rebordered, slightly depressed lateral margins, expanded anteriorly into inclined lip, with only indistinct extensions to coxae, extensions between coxae represented by three pairs of small triangular sclerites separated from sternal margin by unsclerotized cuticle, additional, much larger pair of triangular sclerites situated opposite lateral edges of sternal lip; surface smooth, with few long setae, posterior margin not rebordered, separating coxae IV. One weakly sclerotized epimeric sclerite on each side, not extending between coxae, not fused to carapace. Pedicel composed of two dorsal sclerites (anterior sclerite with deep posterior invagination receiving beak­shaped anterior extension of posterior sclerite) and weak, inverted vshaped ventral sclerite with anteriorly expanded head not reaching posterior tip of sternum.

Abdomen without dorsal or anterior scutum; cuticle with weak, recumbent setae; epigastric scutum weakly sclerotized, with well­ marked booklung openings at sides but without postepigastric sclerites, booklung covers strongly ridged; colulus represented only by scattered setae situated near narrow posterior spiracle. Six spinnerets (figs. 349, 350, 443– 448), anterior laterals short, conical, separat­ ed by more than their diameter at base, with two articles, distal article with two major ampullate gland spigots and numerous small, unmodified piriform gland spigots; posterior medians of males triangular, of females bipartite, anterior portion with one or two large minor ampullate gland spigots and few tiny aciniform gland spigots, enlarged posterior portion with two offset rows, inner row with seven, outer row with six large cylindrical gland spigots; posterior laterals with two articles, those of females with two large cylindrical gland spigots.

Legs laterigrade, leg formula 4231, most surfaces with long setae; coxae and trochanters without dorsal tubercles, fourth trochanters slightly elongated; anterior coxae without protuberant posterolateral corners; trochanters very slightly notched, producing sharp point at ventralmost edge; anterior metatarsi and tarsi with undivided scopula composed of short, straight setae; posterior metatarsi with distal preening brushes composed of row of long, thick setae; tarsi with two long claws, proclaw with series of about five small teeth, increasing in length from most proximal to most distal, teeth reduced to tiny serrations on proclaws of leg IV, retroclaws smooth or with one or two tiny denticles, strong claw tufts present, composed of two large pads of narrow setae; tarsi without cuticular cracks, extremely short; morphologically dorsal surface with modified proximal margin consisting of patch of unsclerotized cuticle followed by strong cuticular ridge, that ridge opposing distinct distal extensions situated at distal edge of metatarsi; trichobothria present, in three rows on tarsi, two on metatarsi and tibiae. Female palpal femur, tibia, tarsus with dorsal spines; female palpal tarsus with long claw bearing about four long ventral teeth, without ventral scopula. Typical leg spination pattern (counts refer to morphological surfaces, only surfaces bearing spines listed): femora: I d1­1­1, II– IV d1­0­0; tibiae: I v3­3­3; II v4­3­3; III, IV v1p­1p­0; metatarsi: I, II v1p­2­2.

Male palpal tibia with pair of basal retrolateral protuberances, more distal one pronounced, retrolateral apophysis long, narrow; cymbium with thick distal scopula; cymbial surface deeply invaginated opposite retrolateral tibial apophysis; tegulum elongated, with basally originating, very long, narrow embolus extending to near base of palpal tibia, then across ventral portion of bipartite median apophysis, accompanied by distally membranous conductor. External epigynum large, with large, excavated atrium, internally with long median ducts and short lateral spermathecae.

Misplaced Species: Pyrnus flavitarsis (L. Koch) is transferred below to Platorish .

Figures

Map 35. Records of Longrita yuinmery, new species (squares), Pyrnus fulvus (L. Koch) (circles), and P. planus (L. Koch) (stars).

Figs. 439–442. Longrita yuinmery, new species. 439. Left male palp, ventral view. 440. Same, retrolateral view. 441. Epigynum, ventral view. 442. Same, dorsal view.