Tasmanicosa semicincta ( L. Koch, 1877 )

Framenau, Volker W. & Baehr, Barbara C., 2016, Revision of the Australian Union-Jack wolf spiders, genus Tasmanicosa (Araneae, Lycosidae, Lycosinae), Zootaxa 4213 (1), pp. 1-82: 43-46

publication ID

http://doi.org/10.11646/zootaxa.4213.1.1

publication LSID

lsid:zoobank.org:pub:9C76B987-3897-4666-87EF-62EB5BF5CF04

persistent identifier

http://treatment.plazi.org/id/0B32B23C-7B33-9F51-BEF8-3AE6FC1DFD3A

treatment provided by

Plazi

scientific name

Tasmanicosa semicincta ( L. Koch, 1877 )
status

comb. nov.

Tasmanicosa semicincta ( L. Koch, 1877)   comb. nov.

Half-banded Wolf Spider

( Figs 1H View FIGURE 1 , 3B View FIGURE 3 , 6G View FIGURE 6 , 7C View FIGURE 7 , 24A –K View FIGURE 24 , 25 View FIGURE 25 )

Lycosa   semi-cincta L. Koch 1877: 908 –910, pl. 78, figs 5, 5A –B; Rainbow 1911: 272. Lycosa semicincta Koch.   — McKay 1985: 82.

Orthocosa semicincta (L. Koch)   .— Roewer 1955: 282 (type species of Orthocosa Roewer, 1955   ); Rack 1961: 39. Arkalosula semicincta L. Koch.   — McKay 1973: 380.

Type data. Syntypes. Female , Rockhampton [23°22'S, 150°30'E, Queensland, AUSTRALIA], ‘ Daemel 127’ ( ZMH, Rack (1961) -catalogue 478, Museum Godeffroy 14567) (examined); immature (penultimate) female, Gayndah [25°37'S, 151°37'E, Queensland, AUSTRALIA] ( NHM 1919.9.18.950) (examined). GoogleMaps  

Other material examined. 46 males and 66 females (1 with eggsac and one with spiderlings), and 17 juveniles from 78 records (Appendix A).

Diagnosis. Tasmanicosa semicincta   is the only representative of the genus in which the black pattern on the ventral opisthosoma is restricted to a narrow transverse band behind the epigastric furrow ( Figs 24C –D View FIGURE 24 ). Male and female genital morphology resembles that of T. ramosa   in having an extremely long ridge of the tegular apophysis ( Fig. 24J View FIGURE 24 ) and corresponding long epigyne ( Fig. 24G View FIGURE 24 ), but they can be distinguished, in addition to the ventral pattern by the more pointed processes of the tegular apophysis and smoother anterior parts of the median septum.

Description. Male (based on QM S71191 View Materials ).

Total length 14.2.

Prosoma. Length 8.9, width 6.7; carapace reddish-brown with genus-specific Union-Jack pattern; median light band largely restricted to around fovea, marginal light bands narrow ( Fig. 24A View FIGURE 24 ); sternum light brown, covered with whitish setae ( Fig. 24C View FIGURE 24 ).

Eyes. Diameter of AME 0.34, ALE 0.27, PME 0.70, PLE 0.65.

Chelicerae. Brown with an elongated patch of silvery setae frontally.

Labium. Brown, with lighter anterior half ( Fig. 24A View FIGURE 24 ).

Endites. Brown, with light setae in particular laterally ( Fig. 24A View FIGURE 24 ).

Legs. Light brown, covered with silvery setae; venter of coxae light brown ( Fig. 24A View FIGURE 24 ).

Opisthosoma. Length 6.7, width 4.7; dorsally with folium pattern bordered by narrow light bands in anterior half ( Fig. 24A View FIGURE 24 ); venter light brown with dark transverse band behind epigastric furrow ( Fig. 24C View FIGURE 24 ).

Pedipalps. Cymbium dorsally with dense layer of silvery setae; tip with approximately five macrosetae ( Figs 24E –F View FIGURE 24 ); ridge of tegular apophysis laterally exceeding cymbium edge and with very long ventral spur ( Figs 6G View FIGURE 6 , 24J –K View FIGURE 24 ); embolus long and thin; terminal apophysis sickle-shaped, broad and flat with acute tip ( Figs 7C View FIGURE 7 , 24I View FIGURE 24 ).

Female (based on QM S71174).

Total length 15.6.

Prosoma. Length 9.3, width 6.9; carapace and sternum colouration as male ( Figs 24B, D View FIGURE 24 ).

Eyes. Diameter of AME 0.37, ALE 0.36, PME 0.83, PLE 0.83.

Chelicerae, labium, endites, legs and opisthosoma. Opisthosoma length 6.6, width 4.7; otherwise as male, but opisthosoma dorsally with more distinct light patches in anterior half ( Figs 24B, D View FIGURE 24 ).

Epigyne. Approximately two and a half times as long as wide; median septum inverted T-shaped and slightly curved anteriorly ( Fig. 24G View FIGURE 24 ); spermathecal heads spherical and small, situated around one third along epigyne from base; spermathecal stalks S-shaped ( Fig. 24H View FIGURE 24 ).

Remarks. Koch (1877) described his Lycosa   semi-cincta from syntypes found in Rockhampton and Gayndah lodged in the Museum Godeffroy and (p. 910) found by ‘ Mr Daemel under rocks ’. Rack (1961) states that the female syntypes are missing, but the ZMH holds a female from Sydney (Museum Godeffroy 14567, Rack (1961) - catalogue 478). This female is accompanied with a label by L. Koch naming ‘Daemel 127’ as collector. A second label reads ‘ Sidney’ and ‘ Rock’ suggesting that it may have been found in Rockhampton. Therefore, the female from Hamburg is here considered one of the syntypes in addition to a juvenile from Gayndah lodged in the NHM. Lycosa semicincta   is the type species of the genus Orthocosa Roewer, 1955   . Transferring the species to Tasmanicosa   places Orthocosa   in synonymy with Tasmanicosa   , which places all other species currently listed in Orthocosa   , all non-Australian of very diverse morphology, in Tasmanicosa   . We do not agree with this placement and propose different generic placements for all these species based on a critical evaluation of available descriptions and illustrations of these species (Appendix A).

Life history and habitat preferences. Few records of T. semicincta   encompassed information on habitat, including Eucalyptus microtheca   , E. largiflorens   and Belah/rosewood woodlands. The species has also been found near human habitation (in house, open grass around pub on clayey, loamy soil). Males and females of T. semicincta   have been found all year round but in slightly higher numbers in the spring and summer months (September – February). The single female with eggsac in collections was found in October, the single female with spiderlings in February.

Distribution. South-eastern Queensland and New South Wales ( Fig. 25 View FIGURE 25 ).

ZMH

Zoologisches Museum Hamburg

NHM

University of Nottingham

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Lycosidae

Genus

Tasmanicosa

Loc

Tasmanicosa semicincta ( L. Koch, 1877 )

Framenau, Volker W. & Baehr, Barbara C. 2016
2016
Loc

Orthocosa semicincta

McKay 1973: 380
Rack 1961: 39
Roewer 1955: 282
1955
Loc

Lycosa

McKay 1985: 82
Rainbow 1911: 272
Koch 1877: 908
1877