Mangora piratini, Rodrigues, Everton Nei Lopes & Mendonça, Milton De S., 2011

Rodrigues, Everton Nei Lopes & Mendonça, Milton De S., 2011, Araneid orb-weavers (Araneae, Araneidae) associated with riparian forests in southern Brazil: a new species, complementary descriptions and new records, Zootaxa 2759, pp. 60-68 : 66

Mangora piratini sp. nov.

( Figs. 14–16 )

Types. Holotype female from riparian forest of Piratini river, Arroio Grande, Rio Grande do Sul, Brazil, 21.IX.2007, E. N. L. Rodrigues leg., deposited in MCN 47021.

Etymology. The species epithet is a noun in apposition, referring to the type locality.

Diagnosis. The epigynum is similar to that of M. latica Levi, 2007 ( Levi 2007, figs. 600, 601), in posterior view lateral plates are parallel with the median plate, apically projected like a tongue, but differs by the margins of lateral plates being closer together ( Fig. 15 ). The ventral side, posteriorly, has two lobes separated by a short space ( Fig. 14 ) and, anteriorly, has spermathecae very close together. The male is unknown.

Description. Female (MCN 47021, Arroio Grande, RS). Total length 6.15. Carapace length 2.40, width 1.95, height 1.49. Clypeus height 0.10. Sternum length 1.10, width 0.89. Abdomen length 4.65, width 2.65, height 2.70. Leg formula I/IV/II/III. Leg lengths (I/II/III/IV): femur 2.75/2.50/1.70/2.75; patella 1.00/0.89/0.60/0.80; tibia 2.25/ 2.00/1.25/2.10; metatarsus 2.40/2.30/1.40/2.45; tarsus 0.95/0.95/0.80/0.95. Total leg (I/II/III/IV): 9.35/8.64/5.75/ 9.0 5. Eye diameters and interdistances: AME 0.15, ALE 0.0 7, PME 0.12, PLE 0.10; AME-ALE 0.20, PME-PLE 0.22, AME-AME 0.10, PME-PME 0.0 7. Eyes with black borders. Carapace ( Fig. 16 ), sternum, endites and chelicerae yellowish. Legs yellow, except metatarsus and tarsus darker. Thighs III smaller than the others. Abdomen ( Fig. 16 ) longer than wide, cylindrical, narrowing anteriorly. Dorsal and ventral sides yellow. Dorsum dotted with very sparse white spots, and two posterior black spots patches. Ventral side dotted with white, mostly on the central portion, from the epigastric furrow to the spinnerets. Colulus developed with four macrosetae. Spinnerets yellowishbrown. The epigynum sclerotized posteriorly, striated lateral plates and spermathecae very close together ( Figs. 14, 15 ).

Material examined. Only the holotype was examined.

Distribution. Known only from the type locality (Arroio Grande, Rio Grande do Sul, Brazil).

Figures

FIGURES 14 – 16. Mangora piratini sp. nov.: (14, 15) female epygine: (14) ventral view, (15) posterior view, (16) female body, lateral view (LP = lateral plate; MP = median plate). Scale lines: (14, 15) 0,25 mm, (16) 1 mm.