Barraina Richardson, 2013

Richardson, Barry J., 2022, Additions to the euophryine jumping spider fauna (Araneae: Salticidae) of Australia, Zootaxa 5141 (3), pp. 249-269 : 251-252

Barraina Richardson, 2013

Barraina Richardson, 2013: 462 .

Type species. Barraina anfracta Richardson, 2013

Remarks. Barraina was described on the basis of material from several locations in north-eastern Queensland. Further specimens of this genus have now been collected in New South Wales, the Australian Capital Territory, South Australia and Western Australia. These represent several new species that are described here.

Revised Diagnosis. Barraina is an Australian genus of small, euophryine spiders that can be distinguished from other genera by the thick, white clypeal fringe in the males, the anti-clockwise corkscrew or spiral form of the embolus and the presence of a small distal tegular lobe. The tibial apophysis is of medium length with a hooked end. The entrances to the insemination canals are distal to the spermathecae. The fertilization canals exit via a distinct extension near the distal edge of the longitudinally-elongated oval spermathecae. The spermathecae have no internal subdivisions.

Key: Females

– Insemination duct moves from the copulatory opening to the posterio-median corner of the spermatheca but folds back on itself or forms coils immediately prior to joining the spermatheca (e.g. Figs 23 , 35 )..................................... 3

2. Copulatory openings further apart than the width across the spermathecae........................................................................................................................... B. pilata ( Figs 41–52 )

– Copulatory openings closer to one another than the width across the spermathecae........................ B. anafracta

3. Insemination duct coiled into four or more loops at the posterio-medial corner of the spermatheca..... B. occidentalis ( Figs 29–40 )

– Insemination duct moves down the length of the spermatheca before folding back on itself for varying lengths before entering the spermatheca at the posterio-medial corner.............................................................. 4

4. The fold back in the insemination duct more than the length of the spermatheca.................. B. abeddar ( Figs 2–9 )

– The fold back in the insemination duct more than half the length of the spermatheca........... B. melanoros ( Figs 18–28 )

– The fold back in the insemination duct less than half the length of the spermatheca............ B. banyabba ( Figs 10–17 )

Key: Males (The males of only four species are known)

1. Embolus forms a two-circle structure on the postero-lateral edge of the tegulum ( Fig. 37 )...... B. occidentalis ( Figs 29–40 )

– Embolus forms a spiral/corkscrew shape on the distal edge of the tegulum........................................ 2

2. A short embolus makes a gentle spiral shape...................................................... B. anafracta

– A long, strongly-built embolus makes a corkscrew shape..................................................... 3

3. A long embolus with a spear-like twisted shape but without a spiral section midway along its length ( Fig. 26 )............................................................................................... B. melanoros (18–28)

– A long embolus with a spear-like twisted shape including a complex spiral section midway along its length ( Fig. 50 )......................................................................................... B. pilata ( Figs 41–52 )

Figures

FIGURES 18–28. Barraina melanoros n. sp. Holotype (42 002173), (female; 18 dorsal, 19 ventral, 20 lateral, 21 anterior views); (external epigyne 22; semi-diagrammatic, dissected and cleared epigyne 23 dorsal, 24 ventral); (male palp, (NN-30290), 25 anterior, 26 ventral, 27 posterior), 28 distribution map with BICLIM prediction of distribution. Scales: 0.2mm.

FIGURES 29–40. Barraina occidentalis n. sp. Holotype, (T156388), (female; 29 dorsal, 30 ventral, 31 lateral, 32 anterior views); (epigyne, (42 001581), 33 external; semi-diagrammatic, dissected and cleared epigyne, 34 dorsal, 35 ventral); 36 (male, (T156388), 36 anterior, palp; 37 anterior, 38 ventral, 39 posterior); 40 distribution map. Scales: 0.2mm.

FIGURES 41–52. Barraina pilata n. sp. Holotype (KS80913), (female; 41 dorsal, 42 ventral, 43 lateral, 44 anterior, 45 external epigyne; semi-diagrammatic, dissected and cleared epigyne, 46 dorsal, 47 ventral). Paratype (KS80904), (male; 48 anterior, palp, 59 posterior, 50 ventral, 51 anterior views). 52 distribution map with BIOCLIM predicted distribution. Scales: 0.2mm.

FIGURES 2–9. Barraina abeddar n. sp. Holotype (KS74248), (female; 2 dorsal, 3 ventral, 4 lateral, 5 anterior views); (epigyne; external, 6, dissected and cleared, 7 dorsal, 9 ventral views); 9 distribution map. Scale: 0.2mm.

FIGURES 10–17. Barraina banyabba n. sp. Paratype (KS97153), (female; 10 dorsal, 11 ventral, 12 lateral, 13 anterior views); (epigyne; 14 external). Holotype (KS97416), (epigyne; dissected and cleared, 15 dorsal, 16 ventral views); 17 distribution map. Scale: 0.2mm.