Sicarius ornatus, Magalhães, Ivan L. F., Brescovit, Antonio D. & Santos, Adalberto J., 2013
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publication ID |
https://doi.org/ 10.5281/zenodo.248572 |
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publication LSID |
lsid:zoobank.org:pub:9412439A-C8E1-4FA6-B51A-D9169A50970C |
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DOI |
https://doi.org/10.5281/zenodo.6153049 |
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persistent identifier |
https://treatment.plazi.org/id/038987D6-FF83-FFE0-FF2E-7177FEFD7663 |
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treatment provided by |
Plazi |
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scientific name |
Sicarius ornatus |
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sp. nov. |
Sicarius ornatus View in CoL new species
Figs 20 View FIGURES 18 – 21 ; 29–31;39–40; 104–123; 130–133; 140–141; 148–149; 163–165; 166
Type material. Male holotype from Milagres, Bahia, Brazil (12°54'54.2''S 39°51'27.9''W), I/2011, M.A. Ulisséa coll., deposited in IBSP 161102. Paratypes: same collecting data, 13 ( IBSP 161098), 13 ( IBSP 161100), 13 ( IBSP 161102); 12 – 16/VI/2010, 13 ( IBSP 161085), 13 ( MPEG ARA 19207), 13 ( UFMG 11039) 1Ƥ ( UFMG 11042), 13 ( IBSP 161088), 1Ƥ ( IBSP 161089), 13 ( MNRJ 6524), 23 ( IBSP 161091), 13 ( IBSP 161092), 13 ( IBSP 161093), 13 ( IBSP 161094), 13 ( MZSP 48989), 13 ( IBSP 161096), 13 ( IBSP 161097); 28/I/2010, Equipe Feira de Santana coll., 1Ƥ ( IBSP 161081); 1/V/2009, 13 ( IBSP 161082); mata atrás do Posto Andorinhas (12°54'21''S 39°50'53''W, 750m), 16 – 19/III/2012, E.S. Araújo & A. Medeiros coll., 13 2Ƥ (CHNUFPI 250), 13 (CHNUFPI 73), 13 (CHNUFPI 74), 13 (CHNUFPI 258).
Etymology. The name is due to the unusual morphology of the genitalia of both sexes in this species: the male has a keel in the palpal embolus, and the female has up to five pairs of ventral branches in the spermathecae.
Diagnosis. Males differ from those of all other Sicarius species by having a keel in the embolus ( Figs 104–109 View FIGURES 104 – 109 , 131–133 View FIGURES 124 – 131 View FIGURES 132 – 133 ). Females have up to ten digitiform branches in the ventral face of the spermathecae ( Figs 111, 115, 119 View FIGURES 110 – 123 , 141 View FIGURES 134 – 141 , 149 View FIGURES 142 – 149 , arrows), more easily seen in lateral view, and short, non-convoluted spermathecae branches ( Figs 110–121 View FIGURES 110 – 123 ). The two central branches of the spermathecae are extended posteriorly in relation to the lateral ones, and the ventral face of the spermathecae is covered with many pores ( Fig. 115, 119 View FIGURES 110 – 123 , 149 View FIGURES 142 – 149 ). Subadult females have very short spermathecae branches; in ventral view and as in the adult, the middle ones are extended posteriorly ( Figs 122–123 View FIGURES 110 – 123 ).
Description. Male (IBSP 161102, holotype). Coloration and general appearance as described for the genus. Total length 11.25. Carapace: length 5.39, anterior width 2.37, thoracic region width 5.73. Clypeus height 0.92. Eyes diameters and interdistances: ALE 0.25, PLE 0.25, PME 0.23, ALE–PLE 0.2, PME–ALE 0.51. Sternum: length 2.2, width 3.14. Leg I: femur 6.74, patella 2.35, tibia 7.34, metatarsus 5.32, tarsus 2.39. II: femur 7.69, tibia 7.69. III: femur 6.91, tibia 6.56. IV: femur 7.08, patella 2.2, tibia 5.93, metatarsus 4.84, tarsus 2.29. Opisthosoma: length 5.8, width 5.18. Five picks in the palpal femur. Palp as in Figs 104–109 View FIGURES 104 – 109 , 130–133 View FIGURES 124 – 131 View FIGURES 132 – 133 .
Female. (IBSP 161089, paratype from Milagres, Bahia). Coloration and general appearance as described for the genus. Total length 13.5. Carapace: length 6.27, anterior width 2.65, thoracic region width 6.48. Clypeus height 0.99. Eyes diameters and interdistances: ALE 0.23, PLE 0.23, PME 0.23, ALE–PLE 0.23, PME–ALE 0.69. Sternum: length 2.4, width 3.15. Leg I: femur 6.61, patella 2.66, tibia 7.25, metatarsus 4.9, tarsus 2.4. II: femur 7.51, tibia 7.25. III: femur 7.25, tibia 6.3. IV: femur 7.08, patella 2.45, tibia 6.34, metatarsus 5, tarsus 2.4. Opisthosoma: length 6.68, width 7. Six picks in the palpal femur. Spermathecae as in Figs 110–121 View FIGURES 110 – 123 , 140–141 View FIGURES 134 – 141 , 148–149 View FIGURES 142 – 149 .
Variation. Carapace length: males 4.85–6.75 (n=10), females 5.28–6.61 (n=11). Femur II: males 6.82–9.5 (n=10), females 6.48–8.12 (n=11). Picks in the palpal femur: 5–7. Spermathecae branches 13–24. Genitalic morphology is variable in both sexes ( Figs 104–121 View FIGURES 104 – 109 View FIGURES 110 – 123 ). The keel varies greatly in size ( Figs 132–133 View FIGURES 132 – 133 ); some individuals were first thought to represent a different species, but as there is intrapopulational variation, we prefer to regard them as intermediate forms of the same species. Some females have five pairs of ventral branches in the spermathecae ( Figs 119, 121 View FIGURES 110 – 123 ), others three ( Fig. 141 View FIGURES 134 – 141 ), others have only one ( Figs 115 View FIGURES 110 – 123 ).
Distribution. Brazil, eastern Bahia and Sergipe ( Fig. 166 View FIGURE 166 ).
Natural history. This species has been collected from Caatinga areas, from caves ( Fig. 165 View FIGURES 160 – 165 ) and from an Atlantic forest-Caatinga transition area ( Fig. 163 View FIGURES 160 – 165 ). In Sergipe, specimens were taken from a small cave beside a stream ( Fig. 164 View FIGURES 160 – 165 ), in much more humid conditions than it is usual for Sicarius spiders. Eggsacs have been found attached to stones or to small crevices in stones. Thirty-nine newly hatched individuals had between 1.32 and 1.5mm in carapace length.
Other material examined. Bahia: Andaraí, Igatu [12°53’S 41°19’W], 10 – 12/III/2012, A.P.L. Giupponi et al. coll., 23 2Ƥ 5 juveniles ( MNRJ 6355); Iramaia, Gruta do Calixto [13°17'35''S 41°3'48''W], 1/I/2010, 1Ƥ 1 juvenile ( ISLA 2209); Itaetê, arredores da Gruta Natal, Fazenda Rio Alegre [12°58’S 40°58’W], 4/IV/2005, D.R. Pedroso & M.E. Bichuette coll., 1Ƥ 2 juveniles ( MNRJ 6261); Ituaçu, Gruta Mangabeira [13°50'21.9''S 41°18'55.2''W, 522m], T.K. Brazil coll., 1Ƥ 1 juvenile ( IBSP 10236) (13°50'21.9''S 41°18'55.2''W, 522m), 15/I/ 2012, I.L.F. Magalhães et al. coll., 13 ( IBSP 162249), 13 ( IBSP 162250), 1Ƥ ( IBSP 162252), 1Ƥ ( IBSP 162253), 1Ƥ ( IBSP 162254), 13 ( UFMG 11018), 1Ƥ ( UFMG 11019); Jequié [13°51’S 40°4’W, 215m], 2005 – 2006, L. Bocardo coll., 13 ( IBSP 70973); Maracás, próximo à sede da Ferbasa (13°28'16''S 40°26'17''W, 954m), 1/V/2012, E.S. Araújo & A. Medeiros coll., 23 (CHNUFPI 251); Milagres (12°54'54.2''S 39°51'27.9''W), 12 – 16/VI/2010, M.A. Ulisséa coll., 1 juvenile ( IBSP 161093), (12°54’21’’S 39°50’54’’W), E.S. Araújo & A. Medeiros, 9/VII/ 2012, 13 (CHNUFPI 258); Mucugê, Reserva Particular do Patrimônio Natural Adília Paraguaçu Batista [12°59’S 41°22’W, 983m], VII/2005, J.P.Souza-Alves coll., 1Ƥ ( IBSP 56507). Sergipe: Itabaiana, Parque Nacional Serra de Itabaiana, gruta (10°45'0.2''S 37°20'26''W, 188m), 14 – 20/IX/1999, A.D. Brescovit et al. coll., 4Ƥ 3 juveniles ( IBSP 67162), 19/V/2012, I.L.F. Magalhães & J.L. Chavari coll., 13 ( IBSP 162807), 13 ( IBSP 162808), 13 ( IBSP 162811), 1Ƥ ( IBSP 162812), 1Ƥ ( IBSP 162815), 13 ( UFMG 11726), 13 ( UFMG 11727), 1Ƥ ( UFMG 11728), 1Ƥ ( UFMG 11729).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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