Paracymbiomma carajas

Rodrigues, Bruno V. B., Cizauskas, Igor & Rheims, Cristina A., 2018, Description of Paracymbiomma gen. nov., a new genus of prodidomid spiders from the Neotropical region (Araneae: Prodidomidae) including a new troglobite species, Zootaxa 4514 (3), pp. 301-331: 308-320

publication ID

https://doi.org/10.11646/zootaxa.4514.3.1

publication LSID

lsid:zoobank.org:pub:B674EE1E-57C0-4FC5-B855-AED8FA6596EA

persistent identifier

http://treatment.plazi.org/id/8D1487E6-541C-FFAE-FF2D-F214FAB27685

treatment provided by

Plazi

scientific name

Paracymbiomma carajas
status

sp. nov.

Paracymbiomma carajas  sp. nov.

Figs 4View FIGURES 1–6, 9–11View FIGURES 7–12, 18–30View FIGURES 13–18View FIGURES 19–24View FIGURES 25–30, 46–48View FIGURES 43–48, 57–60, 72View FIGURES 69–74, 75View FIGURES 75, 80View FIGURES 80–83

Type material. Male holotype from Brazil, Pará, Parauapebas (FLONA Carajás), Cave N5S-63/64/65, (06°06'12''S 50°08'07''W), 14 March–04 April 2010, I. Cizauskas et al. leg., deposited in IBSP 174162. Paratypes: 1 male from Brazil, Pará, Parauapebas ( FLONA Carajás), Cave N3-0031, (06°02'37''S 50°13'09''W), 03–17 April 2013, Equipe Carst leg., ( IBSP 183736View Materials)GoogleMaps  ; 1 female, Cave N4WS-61, (06°04'35''S 50°11'38''W), 18 November–01 December 2010, C.A.R. Souza et al. leg., ( IBSP 183740View Materials)GoogleMaps  ; 1 female, Cave N5S-74, (06°06'02''S 50°08'05''W), 14 March–04 April 2010, I. Cizauskas et al. leg., ( IBSP 174163View Materials)GoogleMaps  ; 1 female, Cave N3-0050, (06°02'38''S 50°13'10''W), 02–23 July 2013, Equipe Carst leg., ( IBSP 183737View Materials)GoogleMaps  .

Etymology. The specific name is a noun in apposition and refers to the type locality.

Diagnosis. Males of P. carajas  sp. nov. resemble those of P. pauferrense  sp. nov. in having eight eyes ( Figs 17, 18View FIGURES 13–18), but differ by the male palp with embolar insertion at 12 o’clock position and close to median apophysis (embolar insertion far from median apohysis and near tegulum center in P. pauferrense  sp. nov.), and median apophysis large with small hook in distal part (median apophysis small in P. pauferrense  sp. nov.) ( Figs 57, 58). Females are distinguished from those of the other known species of the genus by the epigyne with copulatory duct visible ventrally as lateral S-shapes and by the triangular atrium with sclerotized anterior and lateral margins ( Figs 59, 60).

Description. Male (holotype). Total length: 3.5. Carapace 1.41 long, 1.16 wide; abdomen 1.65 long, 0.94 wide; sternum 0.88 long, 0.72 wide; spinnerets ALS 0.25 long, 0.12 wide. Six eyes arranged in two rows, the anterior row straight, the posterior procurved. AME reduced. Eye diameters and interdistances: AME 0.016; ALE 0.075; PLE 0.058; PME 0.05; AME–AME 0.008; AME–ALE 0.025; PLE–ALE 0.016; PME–PLE 0.062; PME– PME 0.062. Chelicerae 0.6 long; two retromarginal short teeth and three promarginal teeth. Leg formula 4123; measurements: I: 4.7 (1.3, 0.70, 1.1, 0.90, 0.70); II: 4.16 (1.16, 0.66, 0.91, 0.78, 0.66); III: 3.41 (0.94, 0.5, 0.63, 0.69, 0.66); IV: 4.79 (1.3, 0.65, 1.2, 0.96, 0.86). Leg formula 4123. Leg spination: I – femur d1-1-0, p0-0-1; tibia v2-2 -0; metatarsus v2 -0-0. II – femur d1-1-0, p0-0-1; tibia v1 r-2-0; metatarsus v2 -0-0. III – femur d1-1-0, p1-0-1, r0-1-1; tibia d0-1-0, p1-0-1, r1-0-1, v1 p-2-2; metatarsus p1-0-1, r1-0-1, v2 -0- 2. IV – femur d1-1-0, p1-0-1, r0-0-1; tibia d1-1-0, p1-0-1, r1-0-1, v0-2-2; metatarsus p1-0-1, r1-0-1, v3 -0-2. Palp: femur with four dorsal spines, one median and three posterior; RTA with tapered and curved tip; tegulum rounded; median apophysis retrolaterally directed; embolar insertion at 12 o’clock position ( Figs 57, 58).

Female (Paratype). Total length: 2.8. Carapace 1.38 long, 1.03 wide; abdomen 1.34 long, 0.84 wide; sternum 0.84 long, 0.7 wide; spinnerets ALS 0.27 long, 0.11 wide. Six eyes arranged in two rows, the anterior row straight, the posterior procurved. AME reduced. Eye diameters and interdistances: AME 0.020; ALE 0.075; PLE 0.045; PME 0.05; AME–AME 0.041; AME–ALE 0.02; PLE–ALE 0.02; PME–PLE 0.066; PME–PME 0.066. Chelicerae 0.6 long; two retromarginal short teeth and three promarginal teeth. Leg formula 4123; measurements: I: 3.94 (1.16, 0.66, 0.88, 0.66, 0.59); II: 3.75 (1.09, 0.59, 0.78, 0.66, 0.63); III: 3.05 (0.84, 0.47, 0.55, 0.59, 0.59); IV: 4.31 (1.13, 0.59, 0.94, 0.88, 0.78). Leg spination: I – femur d1-1-0, p0-0-1; tibia v2-2 -0; metatarsus v2 -0-0. II – femur d1-1-0; tibia v1 r-1r-0; metatarsus v2 -0-0. III – femur d1-1-0, p0-0-1; tibia d0-1-0, p1-0-1, r0-0-1, v1 p-2-2; metatarsus p1-0-1, v2 -0- 2. IV – femur d1-1-0, r0-0-1; tibia d1-1-0, p1-0-1, r1-0-1, v1 p-2-2; metatarsus p1-0-1, r1- 0-1, v3 -0-2. Epigyne: posterior margin of epigynal plate truncate ( Fig. 59). Vulva: copulatory duct narrow throughout its entire length with distal part of translucent duct with one loop; secondary spermathecae large with distal part well-defined ( Fig. 60).

Variation. Total length (3 males): 3.0–3.5. (8 females): 2.35–3.1. In some specimens the copulatory ducts are poorly visible in ventral view.

Distribution. Pará, Brazil ( Fig. 75View FIGURES 75).

Other material examined. Brazil. Pará: Parauapebas ( FLONA Carajás), Cave N4WS-77, (06°04'28''S 50°11'18''W), 1 male, 10–19 May 2011, C.A.R. Souza et al. leg. ( IBSP 174165View Materials)GoogleMaps  ; cave N4E-0083, (06°01'59''S 50°09'22''W), 1 female, 19 February–04 March 2010, R. Andrade & I. Cizauskas et al. leg. ( IBSP 174164View Materials)GoogleMaps  ; cave N3-0066, (06°02'31''S 50°13'34''W), 02–23 August 2013, Equipe Carste leg. ( IBSP 183738View Materials)GoogleMaps  ; cave PESE-004, (06°06'19''S 50°09'06''W), 01–09 June 2011, C. A. R. Souza & F. P. Franco et al. leg. ( IBSP 183742View Materials)GoogleMaps  ; cave N4WS- 0 1, (06°03'46''S 50°11'32''W), 18 November–01 December 2010, C. A. R. Souza & F. P. Franco et al. leg. ( IBSP 183739View Materials)GoogleMaps  ; cave N5S-10, (06°06'20''S 50°7'53''W), 1 female, 14–23 October 2009, I. Cizauskas et al. leg.( IBSP 174161View Materials)GoogleMaps  ; cave N4WS-19, (06°04'35''S 50°11'37''W), 1 female, 01–09 June 2011, C.A.R. Souza et al. leg. ( IBSP 183741View Materials)GoogleMaps  ; cave N1-0074, (06°06'16''S 50°16'49''W), 1 female ( IBSP 186284View Materials)GoogleMaps  ; cave N1-0118, (06°00'40''S 50°18'53''W), 1 female ( IBSP 186286View Materials)GoogleMaps  ; cave N1-0137, (06°01'32''S 50°16'29''W), 2 females ( IBSP 186289View Materials)GoogleMaps  ; cave N1-0044, (06°01'13''S 50°16'40''W), 1 female ( IBSP 186292View Materials)GoogleMaps  ; cave N1-0105, (06°00'36''S 50°18'8''W), 1 female ( IBSP 186294View Materials); (Cristalino)GoogleMaps  , Cave CRIS-18/19, (06°26'02''S 49°41'11''W), 1 female, 29 July–06 August 2008, R. Andrade et al. leg. ( IBSP 174595View Materials)GoogleMaps  ; Canaã dos Carajás ( Serra da Bocaína ), Cave SB-226, (06°21'30''S 49°59'34''W), 1 female, 08–22 May 2013, Equipe Carste leg. ( IBSP 183743View Materials)GoogleMaps  ; cave SB-31, (06°18'20''S 49°53'54''W), 29 August– 27 September 2012, C. A. R. Souza & J. Mascarenhas et al. leg. ( IBSP 174171View Materials)GoogleMaps  .

Natural history. Paracymbiomma carajas  sp. nov. was collected in 15 ferruginous caves distributed in different rock outcrops, for which the region of Serra Norte (FLONA de Carajás) is the main area of occurrence. Specimens were collected in twilight (disphotic) zones, with high humidity. All specimens were found only on the floor of the caves. This species has a wide distribution range, and although it was not found outside the cave, it could also inhabit the canga, a characteristic vegetation that covers the ferruginous rock outcrops ( Fig. 76View FIGURES 76–79).