Oztira affinis (Hickman), 2011

Milledge, G. A., 2011, A Revision of Storenosoma Hogg and Description of a New Genus, Oztira (Araneae: Amaurobiidae), Records of the Australian Museum 63 (1), pp. 1-32 : 6-7

Oztira affinis (Hickman)

new combination

Figs 1a , 4d , 6a,e–f , 9a–d , 26

Otira affinis Hickman, 1981: 62–5 , figs 23–28.

Type material examined. HOLOTYPE ♂, Strathgordon , [42°46'S 146°04'E], Tasmania, 16 May 1978, J.L.Hickman, from moss, ( AMS KS6995 ) . PARATYPES: 1♀, Same data as holotype ( KS6996 ) . 2♀, same data ( KS28216 ) .

Other material examined. TASMANIA: 1♂, Maggs Mt , 41°45'S 146°12'E, 13 Jun–19 Sep 1979, R.H. Green ( KS 101138) . 1♀, Pieman Rd., 18 km from Murchison Hwy , 41°37'S 145°27'E, 31 Jan 1981, J.L. Hickman ( KS86771 ) . 1♀, South West Tasmania, Gordon River region , HEC transect 11A L490, 42°35'S 145°43'E, 29 Jan 1976, C. Howard et al. ( KS72948 ) . 1♀, South West Tasmania, HEC transect 1L 150, 42°41'S 145°48'E, 13 Feb 1976, C. Howard et al. ( KS25701 ) . 1♀, South West Tasmania,HEC transect 7R 2058, 42°51'S 145°51'E, 18 Feb 1976, C. Howard et al. ( KS26534 ) . 1♀, South West Tasmania, HEC transect 3R 1300, 42°31'S 145°45'E, 19 Jan 1978, C. Howard et al. ( KS27173 ) . 1♀, South West Tasmania, HEC transect 2L 6750, 42°43'S 145°44'E, 21 Jan 1977, C. Howard et al. ( KS25684 ) . 1♀, South West Tasmania, HEC transect 1R 1070, 42°41'S 145°49'E, 11 Feb 1976, C. Howard et al. ( KS26586 ) . 1♀, South West Tasmania, HEC transect 12L 820, 42°55'S 145°53'E, 22 Feb 1977, C. Howard et al. ( KS26485 ) . 1♀, South West Tasmania,HEC transect 8L 760, 42°37'S 145°45'E, 5 Feb 1976, C. Howard et al. ( KS26582 ) . 1♀, South West Tasmania, HEC transect 12R 1580, 42°56'S 145°51'E, 19 Feb 1977, C. Howard et al. ( KS26520 ) . 1♀, South West Tasmania, HEC transect 10L 330, 42°35'S 145°42'E, 31 Jan 1976, C. Howard et al. ( KS26223 ) . 1♀, South West Tasmania, HEC transect 3R 1225, 42°31'S 145°45'E, 19 Jan 1978, C. Howard et al. ( KS27124 ) . 1♀, Strathgordon , [42°46'S 146°03'E], 25 Apr 1978, J.L. Hickman ( KS28215 ) . 4♀, same data ( KS86770 ) . 6♀, same data ( KS31781 ) . 2♂, same data except 16 May 1978 ( KS28214 ) . 3♀, Track to Heemskirk Falls , 41°50'S 145°11'E, 30 Jan 1981, J.L. Hickman ( KS86772 ) . 6♀, Near Tyndalls , [41°56'S 145°34'E], 29 Mar 1975, JAF ( KS69912 ) (all AMS) . 1♂, 2♀, Strathgordon , [42°46'S 146°03'E], 25 Apr 1978, J.L. Hickman ( S 30779 ) ( QM) .

Diagnosis. Both sexes can be separated from other Oztira spp. by the short tarsal rod which has a distinct flap like opening ( Figs 6a,e–f ). Males can also be separated from other Oztira spp. by the palpal trochanter having twin stridulatory spines and by the form of the MA and RTA ( Fig. 9a–b ); females by the epigynum being without lateral teeth and the sclerotized gonopore openings being close together but separate ( Fig. 9c–d ).

Description. Hickman (1981) gives a full description for this species. A spinal notation from a representative specimen is given here for comparison with Storenosoma . Milledge: Revision of Storenosoma spiders 7

Leg spination (only surfaces bearing spines listed, left legs of AMS KS28214): femur: I D 1-1-1; II D 0-2-1; III D 1-1-2; IV D 1-0-3; tibia: I P 2-1-1, R 1-2-0; II P 1-1-1, R 1-1-0; III D 1-0-1, P 2-2-1, R 0-1-2; IV D 1-0-1, P 2-2-1, R 0-1-2; metatarsus; I P 2-2-2, R 2-1-1; II P 1-2-2, R 1-1-1; III D 0-2-0, P 1-2-2, V 2-0-0, R 1-2-2; IV D 0-1-0, P 1-1-2, V 2-2-1, R 1-1-2.

Distribution. Only known from south west Tasmania ( Fig. 26 ).

Figures

Fig. 1. Cephalothorax and eye pattern.(a) Oztira affinis,(b) Oztira kroombit, (c) Storenosoma hoggi, (d) Otira satura, (e) Pakeha protecta.

Fig. 4. Forelegs. (a–c) Oztira aquilonaria male (S1371): (a) left foreleg tibia and tarsal segments, (b) ventral scopula on metatarsus, (c) tarsal claws. (d) Oztira affinis male (KS101138), left foreleg tibia and tarsal segments. (e) Storenosoma altum female (KS37226), right foreleg tibia and tarsal segments.

Fig. 6. Tarsal organ and trichobothria. (a, e–f) Oztira affinis (KS72948): (a) tarsus leg I; (e) tarsal organ and trichobothrial base, (f) tarsal organ ventral. (b) Oztira aquilonaria (S1371): tarsus leg I. (c, g–h) Oztira kroombit (S30752): (c) tarsus leg I, (g) tarsal organ and trichobothrial base, (h) tarsal organ ventral. (d) Oztira summa (S30776) tarsus leg I.

Fig.9. Oztira affinis.(a–b) male palp (KS6995): (a)ventral, (b) RTA, retrolateral.(c–d) female genitalia:(c)epigynum,

Fig. 26. Distribution of Oztira spp.:  O. affinis, • O. kroombit, Ƃ O. aquilonaria, and  (indicated by arrow) O. summa.