Epicadus pulcher ( Mello-Leitão, 1929 )

Machado, Miguel, Teixeira, Renato Augusto & Lise, Arno Antonio, 2018, There and back again: More on the taxonomy of the crab spiders genus Epicadus (Thomisidae: Stephanopinae), Zootaxa 4382 (3), pp. 501-530 : 514-515

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https://doi.org/ 10.11646/zootaxa.4382.3.4

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Epicadus pulcher ( Mello-Leitão, 1929 )


Epicadus pulcher ( Mello-Leitão, 1929) View in CoL

Figs 7A–D View FIGURE7

Tobias pulcher Mello-Leitão, 1929: 90 View in CoL , figs 189–190.

Tobias epicadoides Mello-Leitão, 1944: 11 (holotype female from Aurá [1°25'34.80"S, 48°23'10.86"W, Belém, Brazil], deposited in MNRJ 0 0 82, examined). GoogleMaps

Tobias regius Birabén, 1955: 74 , figs 5–8 (holotype female from Buena Vista [17°27'32.00"S, 63°39'33.00"W, Santa Cruz, Bolivia], deposited in MLP 0 405, examined). GoogleMaps

Epicadus pulcher (Mello-Leitão) View in CoL . Machado et al. 2017: 448, figs S2A, S5C, S13D.

Type material: Holotype (original designation): female, São Paulo de Olivença [3°38'59.84"S, 69°5'48.85"W, Amazonas, Brazil], ( MNHN 137, examined).

Other material examined. BRAZIL: Bahia: 1 female, Governador Lomanto Júnior , 14°48'36.65"S, 39°28'18.31"W, 28 June 1968, leg. CEPLAC, ( MNRJ 06861 View Materials ). GoogleMaps

Diagnosis. Females of E. pulcher resemble those of E. tigrinus in their vivid yellow body coloration with remarkable black stripes on femora and flattened prosoma with large TWS. However, they can be distinguished by the presence of five opisthosomal projections instead of three, being the median posterior one thin and tail-like. The anterior border of the opisthosoma is strongly concave rather than straight as in E. tigrinus ( Fig. 7A View FIGURE7 ) and the epigynal plate is shallow, with neither folds nor a conspicuous median septum ( Fig. 7C View FIGURE7 ).

Description. Female (from São Paulo de Olivença; MNHN 137): Anterior eye row recurved and posterior procurved. Prosoma yellow with black stains at cephalic region, TWS well developed and surrounded by a dual LBL ( Fig. 7A View FIGURE7 ); MS absent ( Fig. 7B View FIGURE7 ). Chelicerae yellow with proximal black stains. Sternum, endites and labium uniformly yellow. Opisthosoma with five projections faced backward; lower lateral ones longer than others and median posterior tail-like,whitish-yellow with a median LBL and dark, scattered punctuations ( Fig. 7A View FIGURE7 ). Clypeus with a divided upside down V-shaped black mark ( Fig. 7B View FIGURE7 ); anterior legs (I and II) yellow with black stripes; posterior legs (III and IV) predominantly yellow with tiny black spots at the distal portion of femora. Epigynum presents the simplest external design of all Epicadus species, with no septum, elevated lateral folds or differentiation between the median field and the rest of the epigynal plate ( Fig. 7C View FIGURE7 ). The copulatory ducts are short when compared to those of other representatives of the genus and the primary spermathecae have rough surface and spherical shape ( Fig. 7D View FIGURE7 ).

Measurements: eye diameters and interdistances: AME 0.10, ALE 0.14, PME 0.08, PLE 0.06, AME–AME 0.36, AME–ALE 0.20, PME–PME 0.44, PME–PLE 0.22; MOQ length 0.72, MOQ posterior width 0.68, MOQ anterior width 0.66; leg formula: 1-2-4-3: leg I—femur 4.92/ patella 2.58/ tibia 3.05/ metatarsus 2.10/ tarsus 1.40/ total 14.05; II—4.50/ 2.45/ 3.15/ 2.00/ 1.65/ 13.75; III—2.25/ 1.50/ 1.50/ 1.35/ 0.65/ 7.25; IV—2.75/ 1.44/ 1.79/ 1.75/ 0.65/ 8.38. Total body length 9.70; prosoma length 4.75, width 4.55; opisthosoma length 4.95; clypeus height 0.50; sternum length 2.10, width 1.60; endites length 1.20, width 0.66; labium length 0.76, width 0.78.

Distribution. BOLIVIA: Santa Cruz; BRAZIL: Pará, Amazonas, Bahia ( Fig. 17B View FIGURE 17 ).


Museu Nacional/Universidade Federal de Rio de Janeiro


Museo de La Plata


Museum National d'Histoire Naturelle














Epicadus pulcher ( Mello-Leitão, 1929 )

Machado, Miguel, Teixeira, Renato Augusto & Lise, Arno Antonio 2018

Tobias pulcher Mello-Leitão, 1929 : 90

Mello-Leitão, 1929 : 90

Tobias epicadoides Mello-Leitão, 1944 : 11

Mello-Leitão, 1944 : 11

Epicadus pulcher (Mello-Leitão)

Machado et al. 2017 : 448
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