Mesabolivar camussi, Machado & Yamamoto & Brescovit & Huber, 2007

Machado, Éwerton O., Yamamoto, Flávio U., Brescovit, Antonio D. & Huber, Bernhard A., 2007, Three new ground living pholcid species (Araneae: Pholcidae) from Parque Estadual da Cantareira, São Paulo, São Paulo, Brazil, Zootaxa 1582 (1), pp. 27-37 : 30-32

publication ID

https://doi.org/ 10.11646/zootaxa.1582.1.3

publication LSID

lsid:zoobank.org:pub:211E293A-2D5B-4419-BFDB-7F87D49FB2B6

persistent identifier

https://treatment.plazi.org/id/20080B04-3D49-B744-2CBF-27F4FDE2FD21

treatment provided by

Felipe

scientific name

Mesabolivar camussi
status

sp. nov.

Mesabolivar camussi View in CoL n. sp.

( Figs. 15–28 View FIGURES 15–28 , 41–43 View FIGURES 41–43 )

Mesabolivar sp. 2 : Astrin, Huber, Misof & Klütsch 2006: 444.

Types. Male holotype from Parque Estadual da Cantareira (23° 25’ S; 46° 37’ W), São Paulo, São Paulo, Brazil, 14–19.XI.2004, F. Yamamoto col. with pitfall traps, deposited in IBSP 62399. Female paratype, same data as holotype, 28.VII–02.VIII.2004 deposited in IBSP 62398 GoogleMaps .

Etymology. The specific name is a noun in apposition, derived from the Tupi word for “jar”.

Diagnosis. The male is distinguished from congeners by cheliceral armature, with a pair of long and pointed proximal median apophyses and a pair of proximal small protrusions ( Figs. 16–18 View FIGURES 15–28 ), by the shape of the procursus ( Figs. 19–20 View FIGURES 15–28 ), with its unique ventral-prolateral flap-shaped apophysis at the tip ( Figs. 21–22 View FIGURES 15–28 , 42 View FIGURES 41–43 ) and by the spherical retrolateral femur apophysis ( Fig. 19 View FIGURES 15–28 ). The female is distinguished by the anterior position of the epigynal pocket combined with the protuberant pair of ventral apophyses in the epigynum ( Figs. 25–27 View FIGURES 15–28 ) and by the peculiar shape of the pore plates ( Fig. 28 View FIGURES 15–28 ).

Description. Male (Holotype). Total length 2.5, carapace width 1.1; leg I: 27.1 (6.5 + 0.4 + 6.9 + 11.5 + 1.8), tibia II: 4.2, tibia III: 2.8, tibia IV: 4.3, tibia I L/d: 68. Habitus as in fig. 15. Carapace light brown; sternum light ochre. Distinct thoracic groove. Eight eyes on elevated ocular area ( Fig. 15 View FIGURES 15–28 ); distance PME–ALE about 83% of PME diameter. Chelicerae light brown, basal segment of chelicerae with a medium-sized median pair and a small lateral pair of apophyses ( Figs. 16–18 View FIGURES 15–28 , 41 View FIGURES 41–43 ). Palps as in figs. 19–24. Coxa with distinct retrolateral apophysis ( Fig. 19 View FIGURES 15–28 ). Femur proximally with a distinct spherical retrolateral apophysis ( Fig. 19 View FIGURES 15–28 ). Procursus dark brown, with four median prolateral hairs. Distinct tip of procursus, with a ventral-prolateral flap-shaped apophysis at the tip ( Figs. 21–22 View FIGURES 15–28 , 42 View FIGURES 41–43 ). Bulb with small transparent projection ( Figs. 23–24 View FIGURES 15–28 ), embolar division of bulb membranous at the end ( Figs. 23–24 View FIGURES 15–28 ). Legs light brown; without spines, vertical or curved hairs. Tarsus I with approximately 22 pseudosegments. Opisthosoma globular, pale green, with some lateral bluish-spots ( Fig. 15 View FIGURES 15–28 ).

Female (Paratype IBSP). Total length 1.38, carapace width 0.8; leg I: 20.2 (5.1 + 0.4 + 5.2 + 7.8 + 1.8), tibia II: 3.4, tibia III: 2.3, tibia IV: 3.4, tibia I L/d: 40. Habitus as in fig. 15. In general very similar to male. Tarsus I with approximately 22 pseudosegments. Epigynum brown, elevated, with a small, very anterior, medium-sized median pocket, with a pair of prominent ventral apophyses, with several spines on the post-epigynal plate ( Figs. 25, 27 View FIGURES 15–28 , 43 View FIGURES 41–43 ). Internal genitalia with two large and strongly sclerotized curved pore plates with median indentation ( Fig. 28 View FIGURES 15–28 ). The two sclerites visible in ventral view in the post-epigynal membranous area are part of the internal arc ( Figs. 25; 28 View FIGURES 15–28 ).

Variation. Two males: carapace width 1.1–1.3; tibia I: 6.9–7.8. Eight females: carapace width 0.8–1.1; tibia I: 4.1–5.2.

Other material examined. Brazil, São Paulo : São Paulo (Parque Estadual da Cantareira, 23° 25’ S; 46° 37’ W), 1♀, 14–19.XI.2004 ( IBSP 62400 View Materials ); 1♂, 4♀ ( IBSP 62393–62397 View Materials ), 1♀ ( MZSP), 02–07.II.2005; 1♂ ( IBSP 62406 View Materials ), 1♀ ( ZFMK), 12–17.V.2005. Parque Estadual da Cantareira , unspecified location near park entrance, 20.XII.2003 (B.A.Huber), 1♂ in 80% ethanol, 3♂, 7♀ in 100% ethanol ( ZFMK) GoogleMaps .

Distribution. Known only from type locality.

Note. This species ( Mesabolivar sp. 2 in Astrin et al. 2006) is also genetically clearly different from M. mairyara Machado, Brescovit, Candiani & Huber, 2007 (M. sp. 3; p-distance: 19,2–19,5% for 16S rRNA, 16,0–16,7% for CO1, Astrin et al. 2006).

MZSP

Sao Paulo, Museu de Zoologia da Universidade de Sao Paulo

ZFMK

Zoologisches Forschungsmuseum Alexander Koenig

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Pholcidae

Genus

Mesabolivar

Loc

Mesabolivar camussi

Machado, Éwerton O., Yamamoto, Flávio U., Brescovit, Antonio D. & Huber, Bernhard A. 2007
2007
Loc

Mesabolivar sp. 2

Astrin, J. J. & Huber, B. A. & Misof, B. & Klutsch, C. F. C. 2006: 444
2006
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