Stephanopis similis Machado

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: 267-268

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/8A2D2DDD-B909-44CB-BB6E-4E0C98ED4D41

taxon LSID

lsid:zoobank.org:act:8A2D2DDD-B909-44CB-BB6E-4E0C98ED4D41

treatment provided by

Felipe

scientific name

Stephanopis similis Machado
status

sp. nov.

Stephanopis similis Machado   sp. nov.

http://zoobank.org/NomenclaturalActs/ 8A2D2DDD-B909-44CB-BB6E-4E0C98ED4D41

Figs 43–44 View Figure 43 View Figure 44

Holotype ♀, AMS KS.30026, Kanangra Boyd National Park (Boyd plateau near to Jenolan Caves), 34°03'S 150°05'E, New South Wales, Australia, G. Hunt, 6 June 1961 GoogleMaps   . Paratypes: AMS KS.121191, 1♀, Werrikimbe NP, 31°11'56"S 152°10'23"E, E. Tasker, 2 December 1997 GoogleMaps   ; AMS KS.22518, 1♂, Jenolan Caves area (playing fields), 33°49'S 150°02'E, G. Hunt, 14 August 1979 GoogleMaps   ; AMS KS.29993, 1♂, Kanangra Boyd National Park (Blood Filly Creek), 33°51'S 150°03'E, New South Wales, Australia, M. Gray & G. Hunt, 27 March 1976 GoogleMaps   .

Other material examined. Western Australia: AMS KS.15423, 1♂, Normalup-Walpole National Park (Big Tingle Tree), 34°57'S 116°16'E, M. Gray, 15 February 1975 GoogleMaps   . New South Wales: AMS KS.128904, 1♀, Dorrigo NP, 30°21'S 152°47'E, M. Gray & G. Cassis, 4 February–9 April 1993 GoogleMaps   ; AMS KS.102991, 1♀, Barrington Tops NP, 32°03'43"S 151°34'39"E, G. Milledge & H. Smith, 13 November–19 December 2007 GoogleMaps   .

Diagnosis. Females and males of S. similis   sp. nov. resemble those of S. cambridgei   by their elongated body, obovate opisthosoma, thin and long barbs on tibia and metatarsus I of male legs, and pair of prolateral setae on femur I ( Figs. 43A View Figure 43 and 44A View Figure 44 ). However, they can be distinguished by their lower cephalic area ( Figs. 43B View Figure 43 and 44B View Figure 44 ), shorter hyaline setae covering their entire body and pair of reddish-brown median stripes fused on the thoracic area instead of parallel bands that never touch each other. Females can be diagnosed by the wider than long atrium and CO covered by C-shaped lateral folds of the plate ( Fig. 43C View Figure 43 ); copulatory ducts are short and straight, leading to the pair of the kidney-shaped spermathecae with glandular-heads positioned anteriorly ( Fig. 43D View Figure 43 ). Males can be recognized by the subtriangular cymbium, short embolus and truncated RTA ( Fig. 44C View Figure 44 ).

Description. Female (AMS KS.30026): Prosoma orange with longitudinal reddish-brown stripes (a fused central pair and a lateral one on the margins of prosoma) ( Fig. 43A View Figure 43 ); flattened, longer than wide and cephalic prominence absent ( Fig. 43B View Figure 43 ); anterior eyes arranged in a recurved row and posterior ones in a straight row. Legs orange with reddishbrown spots; opisthosoma whitish-yellow with several black punctuations on dorsum ( Fig. 43A View Figure 43 ).

Measurements: eye diameters and interdistances: AME 0.07, ALE 0.19, PME 0.12, PLE 0.14, AME–AME 0.11, AME–ALE 0.07, PME–PME 0.23, PME–PLE 0.18, MOQ length 0.45, width 0.34; leg formula: 1-2-3-4: leg I—femur 3.58/ patella 1.93/ tibia 3.41/ metatarsus 2.36/ tarsus 0.87/ total 12.42; II—3.04/ 1.52/ 2.75/ 1.91/ 0.89 10.11; III—2.08/ 1.05/ 1.64/ 0.94/ 0.66/ 6.37; IV—2.75/ 1.11/ 2.24/ 1.39/ 0.75/ 8.24. Total body length 9.83; prosoma length 3.94, width 3.38; opisthosoma length 5.89; clypeus height 0.23; sternum length 1.76, width 1.57; gnathocoxae length 0.88, width 0.46; labium length 0.56, width 0.64.

Male (AMS KS.29993): Except by the modified setae on tibiae I and II, all other somatic features are as in female. Tegulum membranose and hyaline ( Fig. 44C View Figure 44 ); RTA stout, single-tipped with narrowed dorsal extremity ( Fig. 44D View Figure 44 ).

Measurements: eye diameters and interdistances: AME 0.07, ALE 0.19, PME 0.13, PLE 0.13, AME–AME 0.11, AME–ALE 0.05, PME–PME 0.15, PME–PLE 0.18, MOQ length 0.35, width 0.32; leg formula: 1-2-3-4: leg I—femur 3.28/ patella 1.64/ tibia 3.35/ metatarsus 2.40/ tarsus 0.98/ total 11.65; II—2.65/ 1.31/ 2.77/ 1.89/ 0.92 9.54; III—1.84/ 0.89/ 1.48/ 0.84/ 0.64/ 5.69; IV—2.26/ 0.97/ 1.97/ 1.30/

0.70/ 7.20. Total body length 7.14; prosoma length 3.21, width 2.74; opisthosoma length 3.93; clypeus height 0.20; sternum length 1.44, width 1.31; gnathocoxae length 0.67, width 0.37; labium length 0.44, width 0.47.

Etymology. The specific epithet is a Latin masculine adjective that means “similar”, given to this species due to its striking resemblance with S. cambridgei   .

Distribution. Western Australia and New South Wales, Australia ( Fig. 49 View Figure 49 ).