Plato ferriferus Prete, Cizauskas & Brescovit, 2018

Prete, Pedro H. & Brescovit, Antonio D., 2024, Taxonomic revision of the orb weaving spider genus Plato Coddington, 1986 (Araneae: Theridiosomatidae) with the description of three new species, Zootaxa 5471 (1), pp. 1-32 : 12

Plato ferriferus Prete, Cizauskas & Brescovit, 2018

Figures 1 , 9 , 10 , 23

Plato ferriferus Prete, Cizauskas & Brescovit, 2018: 110 , figs 1–3 (male holotype and female paratype from Cave N 4E_0079 (6º02'00"S, 50º09'07"W), Parauapebas, Pará, Brazil, 19.ii-4.iii.2010, R. Andrade & I. Cizauskas col., deposited in IBSP 173283, examined). Paratypes: male and female from Cave N 5S_0037 (6°06'23"S, 50°07'59"W), 15–21.ix.2009, deposited in MPEG.ARA 32028; male and female from Cave N 5S_0012 (6°06'13"S, 50°07'33"W), 14–23.x.2009, deposited in MPEG.ARA 32027; male and female from Cave N 5S_0030 (6°05'20"S, 50°07'12"W), 14–16.xii.2010, deposited in MZSP 0929; male and female from Cave N 5S_0028 (6°05'19"S, 50°07'33"W), 10–19.v.2011, deposited in MZSP 70930, all from Parauapebas , Pará, Brazil, R. Andrade & I. Cizauskas et al. col., examined.

Additional material examined. BRAZIL. Pará: Altamira, Cave Pedra da Cachoeira (3°19’15.7"S, 52°19’54.5"W), 1♂, 3♀, 3.iv.2011, M.E. Bichuette et al. col. ( LES 3986 ) ; Flona de Carajás, Cave N5S_01 (6º05'29"S, 50º07'32"W), 1♂, 2♀, 3–13.v.2005 ( IBSP 55790 ) ; Cave N5S_04 (6º06'21"S, 50º08'04"W), 1♀, 3–13.v.2005 ( IBSP 55784 ) ; Cave N5S_10 (6º06'22"S, 50º07'54"W), 1♀, 3–13.v.2005 ( IBSP 55792 ) ; Cave N5E_06, 1♀, 22.iii–3.iv.2005 ( IBSP 55791 ), all collected by R. Andrade & Arnoni. Other cited material, see Prete, Cizauskas & Brescovit (2018: 110).

Diagnosis. Males are recognized by the digitiform conductor apophysis, with a prominent base (fig. 9C–E). Females are diagnosed by the large epigynal plate, which internally has a canoe-shaped dorsal plate (fig. 10A, C, D).

Description. Male and female described by Prete, Cizauskas & Brescovit, 2018: 110, figs. 1–3.

Distribution. Canaã dos Carajás, Parauapebas, Curionópolis, Altamira and São Geraldo do Araguaia, Pará, Brazil (fig. 23).

Figures

FIGURE 1. Palp of Plato. A, B, Plato bicolor from Cave Maroaga, Presidente Figueiredo, Amazonas, Brazil, SEM; C, Plato ferriferus from Parauapebas, Pará, Brazil, SEM; A, mesal view; B, ventral view, expanded; C, cymbium, ventral view. Structures are marked with different colors.Abbreviations, AL, alveolus. C, conductor. CA, conductor apophysis. CL, cymbial lamella. Cy, cymbium. E, embolus. EA, embolic apophysis. MA, median apophysis. O, embolic opening. PC, paracymbium. ST, subtegulum. T, tegulum. Scales: A–C, 0.2.

FIGURE 9. Plato ferriferus, from Parauapebas, Pará, Brazil. A, male body, dorsal view; B, female body, dorsal view; C–F, male palp, left; C, mesal view; D, mesal view, SEM; E, ventral view, expanded, SEM; F, ventral view, expanded; G, embolus illustration, distal view; H, cymbium, detail of cymbial lamella and paracymbium, SEM. Abbreviations, C, conductor. CA, conductor apophysis. CL, cymbial lamella. Cy, cymbium. E, embolus. EA, embolic apophysis. MA, median apophysis. O, embolic opening. PC, paracymbium. ST, subtegulum. T, tegulum. Scales: A, 1,1; B, 1; C–F, 0.3; G, 0.15; H, 0.3.

FIGURE 10. Plato ferriferus, from Parauapebas, Pará, Brazil. A–D, epigynum. A, ventral view; B, ventral view, SEM; C, illustration, dorsal view; D, lateral cut, clarified. Abbreviations, At, atrium. CD, copulatory ducts. CP, central pit. DP, dorsal plate. FD, fertilization ducts. S, spermathecae. Su, epigynal support. TG, transversal groove. Scales: A, 0.17; B, D, 0.2; C, 0.5.

FIGURE 23. Distribution of records of Plato (South America).