Stephanopis bicornis 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: 237-239

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-FFA5-FFE0-0408-FB7BFAB3F871

treatment provided by

Felipe

scientific name

Stephanopis bicornis L. Koch, 1874
status

 

Stephanopis bicornis L. Koch, 1874  

Figs 14–15 View Figure 14 View Figure 15

Stephanopis bicornis L. Koch, 1874: 501   , pl. 38, fig. 3.—L. Koch, 1876: 751, pl. 66, fig. 1.

Stephanopis aruana Thorell, 1881: 317   (holotype, female, Wokam   GoogleMaps [5°47'16.66"S 134°30'45.05"E], Aru Island, Indonesia, deposited in the MSNG, examined). New synonym.

Stephanopis yulensis Thorell, 1881: 319   (syntype, female, Yule Island   GoogleMaps [8°49'S 146°32'E], Papua New Guinea, deposited in the MSNG, examined). New synonym.

Type material examined. Syntypes, 3♀♀, ZMB 3415 View Materials   , Sydney , New South Wales, Australia, 33°52'S 151°12'E; ZSMH GoogleMaps   , 1♀, Sydney.

Other material examined. Queensland: AMS KS.66438, 1♂, Cape Tribulation Rd, c. 100 m N of Cape Kimberley Rd turnoff., 16°15'35"S 145°26'11"E, G. Milledge & H. Smith, 20 May 2000 GoogleMaps   ; QM S15957 View Materials , 1♀, Mount Moffatt NP (Kenniff Cave), 25°1'0.012"S 147°57'E, M. Bennie, 27 September 1987 GoogleMaps   ; AMS KS.33565, 1♀, Condamine , 26°56'S 150°08'E, N. Geary, 10 March 1937 GoogleMaps   . New South Wales   : AMS KS.52155, 1♀, Swansea area , 23°05'S 151°38'E, M GoogleMaps   . R. Gray , 2 April 1990   ; QM S104662, 1♂, Byron Bay , 28°38'50.52"S 153°36'7.12"E GoogleMaps   , R. Monroe , 25 November 1971   ; AMS KS.108683, 1♀, Pittwater , 33°38'S 151°18'E GoogleMaps   , R. E. Mascord , 2 October 1966   ; AMS KS.18778, 1♀, Ku-ring-gai Chase NP, 33°39'S 151°08'E, M GoogleMaps   . R. Gray , January 1988   ; AMS KS.122205, 1♂, Mount Colah , 33°39'45"S 151°07'12"E, H. M. Smith, 15 April 2013 GoogleMaps   ; AMS KS.70139, 1♀, Hornsby (Waitara Creek), 33°42'S 151°06'E, G. Milledge, 14 January 2001 GoogleMaps   ; AMS KS.108685, 2♀♀, Gladesville , 33°50'S 151°08'E GoogleMaps   , R. E. Mascord , 4 December 1965   ; AMS KS.108659, 1♀, Sydney , 33°53'S 151°13'E, J. Hild GoogleMaps   ; AMS KS.108681, 1♂, Kurnell (Sydney), 34°00'S 151°13'E, C. E. Chadwick, 4 April 1970 GoogleMaps   ; AMS KS.101228, 2♀♀, Livingstone NP (30km South of Wagga Wagga), 35°22'S 147°22'E, C. Car, 19 September 2001 GoogleMaps   ; AMS KS.101259, 1♂, same data except 22 June 2001 GoogleMaps   ; AMS KS.101226, 1♀, same data except 18 October 2001 GoogleMaps   ; AMS KS.101278, 3♀♀, same data except 24 May 2001 GoogleMaps   ; AMS KS.101284, 1♀, same data except 21 July 2001 GoogleMaps   ; AMS KS.107253, 2♂♂, Kosciuszko NP ( Sawpit Creek Education Centre), 36°20'49"S 148°33'54"E, D GoogleMaps   . R. Britton & A. D. Hegedus, 5 March 2008   . South Australia   : AMS KS.76382, 1♂, Cleland Conservation Park , 34°58'40"S 138°41'59"E, G. Milledge & H. Smith, 18 March 2002 GoogleMaps   . Tasmania   : AMS KS.31412, 1♀, Trevallyn , 41°27'S 147°10'E GoogleMaps   , V. V. Hickman , 1 December 1928   ; AMS KS.52166, 3♀♀, Mount Nelson , 42°56'S 147°20'E, 15 September 1971 GoogleMaps   .

Diagnosis. Both males and females of S. bicornis   are similar to those of S. angulata   , S. lata   and S. monulfi   in possessing a trapezoidal opisthosoma and having the triad of projections arranged in a dorsal row along the anterior patellae and tibiae (I and II) ( Figs 14A View Figure 14 and 15A View Figure 15 ). However, S. bicornis   can be easily distinguished by the high and acute projections above the ALE ( Fig. 14B View Figure 14 and 15B View Figure 15 ). Females are also diagnosed by their slit-shaped CO located laterally at the edges of the epigynal plate, with its folds forming round entrances ( Fig. 14C View Figure 14 ); males have a characteristic palp with a prolateral tuft of short serrated setae on the dorsal surface of the cymbium and a hook-shaped RTA with squared and discrete RTAvbr ( Fig. 15C and D View Figure 15 ).

Description. Female (AMS KS.70139): Anterior eye row strongly recurved and posterior row straight ( Fig. 14A and B View Figure 14 ); prosoma and anterior legs predominantly dark-brown with some yellowish spots; femora I and II bear stout setiferous tubercles and femora III and IV are smooth and almost entirely yellow; tibiae I and II ventrally armed with four pairs of macrosetae. Opisthosoma trapezoid, covered by sparse claviate setae, with spinneret area projected backwards and anterior border slightly concave; dark-yellow on dorsum, darker on median posterior area ( Fig 14A View Figure 14 ). Spermathecae stomach-shaped, preceded by glandular-heads directed laterally and oval wide anterior chambers ( Fig. 14D View Figure 14 ).

Measurements: eye diameters and interdistances: AME 0.10, ALE 0.15, PME 0.11, PLE 0.12, AME–AME 0.14, AME–ALE 0.10, PME–PME 0.23, PME–PLE 0.17, MOQ length 0.42, width 0.24; leg formula: 1-2-4-3: leg I—femur 2.97/ patella 1.43/ tibia 2.15/ metatarsus 1.25/ tarsus 0.84/ total 8.64; II—2.55/ 1.26/ 1.81/ 1.07/ 0.80/ 7.49; III—1.75/ 0.76/ 1.09/ 0.69/ 0.47/ 4.76; IV—1.73/ 0.74/ 1.14/ 0.77/ 0.54/ 4,92. Total body length 5.93; prosoma length 2.56, width 2.37; opisthosoma length 3.37; clypeus height 0.26; sternum length 1.19, width 1.07; gnathocoxae length 0.69, width 0.38; labium length 0.37, width 0.52.

Male (AMS KS. 122205): Eye arrangement as in female; prosoma reddish-brown with some darker spots; legs predominantly yellow, with some distal or proximal brown spots (except for leg II, which is mostly brown with just the tarsi and metatarsi yellow) ( Fig. 15A View Figure 15 ). Opisthosoma darkyellow with small whitish spots and darker on the posterior slope, near the anal region. Embolus short and curved, and cymbium thick ( Fig. 15C and D View Figure 15 ).

Measurements: eye diameters and interdistances: AME 0.07, ALE 0.19, PME 0.08, PLE 0.12, AME–AME 0.11, AME–ALE 0.09, PME–PME 0.20, PME–PLE 0.12, MOQ length 0.42, width 0.49; leg formula: 1-2-4-3: leg I—femur 2.69/ patella 1.29/ tibia 2.10/ metatarsus 1.24/ tarsus 0.67/ total 7.99; II—2.27/ 1.05/ 1.72/ 1.04/ 0.61/ 6.69; III—0.87/ 0.46/ 0.71/ 0.53/ 0.39/ 2.96; IV—1.19/ 0.47/ 0.78/0.59/ 0.41/ 3.44. Total body length 4.65; prosoma length 2.31, width 2.00; opisthosoma length 2.34; clypeus height 0.29; sternum length 0.88, width 0.81; gnathocoxae length 0.39, width 0.25; labium length 0.24, width 0.28.

Distribution. Queensland, New South Wales, South Australia and Tasmania, Australia ( Fig. 24 View Figure 24 ).

QM

Queensland Museum

R

Departamento de Geologia, Universidad de Chile

V

Royal British Columbia Museum - Herbarium

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Thomisidae

Genus

Stephanopis

Loc

Stephanopis bicornis L. Koch, 1874

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

Stephanopis aruana

Thorell, T. 1881: 317
1881
Loc

Stephanopis yulensis

Thorell, T. 1881: 319
1881
Loc

Stephanopis bicornis L. Koch, 1874: 501

Koch, L. 1876: 751
Koch, L. 1874: 501
1874