Stephanopis armata L. Koch, 1874, L. Koch, 1874

Machado, Miguel, Teixeira, Renato Augusto & Milledge, Graham A., 2019, On the Australian Bark Crab Spider Genus Stephanopis: Taxonomic Review and Description of Seven New Species (Araneae: Thomisidae: Stephanopinae), Records of the Australian Museum 71 (6), pp. 217-276: 230-233

publication ID

http://doi.org/ 10.3853/j.2201-4349.71.2019.1698

publication LSID

lsid:zoobank.org:pub:7EDBAB7F-0E3B-47D7-AA29-0906728ADA05

persistent identifier

http://treatment.plazi.org/id/26714D71-FFBC-FFE6-0421-FA24FEA2F942

treatment provided by

Felipe

scientific name

Stephanopis armata L. Koch, 1874
status

 

Stephanopis armata L. Koch, 1874  

Figs 8–9 View Figure 8 View Figure 9

Stephanopis armata L. Koch, 1874: 503   , pl. 38, Fig. 4 View Figure 4 .

Type material examined. Holotype ♀, 18°1'36.19"S 145°37'47.18"E, ZSMH. GoogleMaps  

Other material examined. Queensland: AMS KS.128290, 1♂, Brisbane ( Lota Creek Park), 27°28'35.2"S 153°11'07.4"E GoogleMaps   , R. Raven , April 2017   ; QM S110116, 1♀, Brisbane (Fig Tree Pocket, Roedean Street ), 27°30'55.43"S 152°57'53.16"E GoogleMaps   , V. E. Davies , 23 June 1984   ; QM S62815 View Materials , 1♂, Burbank ( Buhot Creek ), 27°35'16.188"S 153°10'11.28"E, E. S. Volschenk, 30 April 2003 GoogleMaps   ; AMS KS.103218, 1♂, Tingalpa Creek ( Buholt Creek Reserve ), 27°35'27"S 153°10'19"E, H. Smith & G. Anderson, 17 February 2008 GoogleMaps   ; QM S110115, 1♀, Mount Glorious , 27°42'56.63"S 153°5'15.58"E, A. Hiller, 20 October 1974 GoogleMaps   ; AMS KS.352, 1♂, Mount Dryander (north of Proserpine ), 20°15'S 148°32'E, M. Gray & C. Horseman GoogleMaps   ; QM S110118, 1♀, Burleigh Heads , 28°6'14.40"S 153°26'9.60"E, M. Bishop, 1–7 October 1976 GoogleMaps   . New South Wales: AMS KS.138, 1♂, Bulburin (northweast of Bundaberg ), 24°31'S 151°29'E, M. Gray & C. Horseman, March 1975 GoogleMaps   ; AMS KS.118174, 1♂, Watagans NP, 33°02'17"S 151°22'27"E, G. Milledge & H. Smith, 20 March 2012 GoogleMaps   .

Diagnosis. Females of S. armata   resemble those of S. monulfi   by the strong anterior legs bearing robust and acute projections on the dorsal surface of their patellae and tibiae I and median spire on thoracic portion of prosoma ( Fig. 8B View Figure 8 ). However, they can be distinguished by their reduced body size and wider anterior femora covered by dorsal and prolateral setiferous tubercles ( Fig. 8A View Figure 8 ). Also, the epigynal plate of S. armata   possesses a pair of C-shaped CO placed in a flattened atrium ( Fig. 8C View Figure 8 ) instead of the remarkable septum seen in S. monulfi   . In addition, the anterior chambers are wider than the spermathecae in S. armata   ( Fig. 8D View Figure 8 ). The males of S. armata   are similar to those of S. bicornis   and S. lata   by their robust form, rough tegument and trapezoid opisthosoma ( Fig. 9A View Figure 9 ), but unlike S. bicornis   , S. armata   do not have acute projections above the ALE ( Fig. 9B View Figure 9 ), and different from S. lata   by the leg projections on the dorsal surface of patellae and tibiae being are discrete. Also, S. armata   have strikingly enlarged femora I ( Fig. 9A View Figure 9 ). Males of S. armata   have similar palpi to both S. bicornis   and S. lata   , with slight differences. The RTA of S. armata   is curved, pointing ventrally before it becomes laterally oriented ( Fig. 9C View Figure 9 ).

Description. Female (QM S 110118): Anterior eye row recurved and posterior slightly recurved, almost straight ( Fig. 8A and B View Figure 8 ); prosoma and legs brown, covered by whitish plumose setae (which are more clustered in median thoracic portion, sides of cephalic area and proximal tibiae I) ( Fig. 8A View Figure 8 ). Opisthosoma trapezoid and predominantly yellow with brown patches on the sides. Spermathecae small, with few and short curves, preceded by a wide and sclerotized pair of globose chambers ( Fig. 8D View Figure 8 ).

Measurements: eye diameters and interdistances: AME 0.07, ALE 0.15, PME 0.10, PLE 0.09, AME–AME 0.11, AME–ALE 0.07, PME–PME 0.22, PME–PLE 0.09, MOQ length 0.35, width 0.39; leg formula: 1-2-4-3: leg I—femur 3.05/ patella 1.54/ tibia 2.26/ metatarsus 1.55/ tarsus 0.83/ total 9.23; II—2.69/ 1.45/ 1.87/ 1.36/ 0.80 8.17; III—1.86/ 0.98/ 1.35/ 0.99/ 0.69/ 5.87; IV—2.11/ 0.90/ 1.29/ 1.07/ 0.61/ 5.98. Total body length 6.93; prosoma length 3.23, width 3.24; opisthosoma length 3.70; clypeus height 0.32; sternum length 1.40, width 1.30; gnathocoxae length 0.73, width 0.34; labium length 0.51, width 0.60.

Male (AMS KS.103218): Eyes position as in female ( Fig 9B View Figure 9 ); prosoma brown with two parallel lines of whitish setae on the median portion going from the posterior slope until the sides of cephalic area and behind the PLE ( Fig. 9A View Figure 9 ). Femora, patellae and tibiae I and II predominantly dark-brown; proximal portion of anterior femora (I and II) and entire metatarsi and tarsi I and II light-yellow; colour pattern of posterior legs (III and IV) as in the anterior ones but lighter. Opisthosoma dark-yellow with a posterior diamond-shaped brown stain ( Fig. 9A View Figure 9 ).

Measurements: eye diameters and interdistances: AME 0.05, ALE 0.12, PME 0.10, PLE 0.11, AME–AME 0.09, AME–ALE 0.05, PME–PME 0.16, PME–PLE 0.08, MOQ length 0.35, width 0.29; leg formula: 1-2-4-3: leg I—femur 2.00/ patella 0.95/ tibia 1.41/ metatarsus 1.09/ tarsus 0.56/ total 6.01; II—1.82/ 0.88/ 1.23/ 0.93/ 0.61 5.47; III—1.07/ 0.59/ 0.86/ 0.65/ 0.50/ 3.67; IV—1.31/ 0.57/ 0.83/ 0.62/ 0.44/ 3.77. Total body length 3.90; prosoma length 2.01, width 1.96; opisthosoma length 1.89; clypeus height 0.20; sternum length 0.89, width 0.88; gnathocoxae length 0.44, width 0.22; labium length 0.23, width 0.36.

Distribution. Queensland and New South Wales, Australia ( Fig. 13 View Figure 13 ).

R

Departamento de Geologia, Universidad de Chile

QM

Queensland Museum

V

Royal British Columbia Museum - Herbarium

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Thomisidae

Genus

Stephanopis

Loc

Stephanopis armata L. Koch, 1874

Machado, Miguel, Teixeira, Renato Augusto & Milledge, Graham A. 2019
2019
Loc

Stephanopis armata L. Koch, 1874: 503

Koch, L. 1874: 503
1874