A NEW SPECIES OF Pachomius PECKHAM & PECKHAM (ARANEAE: SALTICIDAE), INHABITING A RIVER-BANK OF NORTHERN ARGENTINA

RUBIO, GONZALO D.; BAIGORRIA, JULIÁN E.; STOLAR, CRISTIAN E.

HISTORIA NATURAL

Fundación de Historia Natural Félix de Azara

Lugar: Buenos Aires; Año: 2021 vol. 11 p. 141 - 149

0326-1778

According to their nature, riparian environments are represented in reduced areas; they are vulnerable to water downspouts and dams. This paper describes and illustrates a new species of jumping spider, Pachomius palustris sp. nov., an inhabitant of the riparian vegetation from the Paraná River banks, in the Argentinian side. The new species was placed into the dybowskii group because the female has the posterior edge of epigynal copulatory openings extended and the male lacks the lateral subterminal apophysis. Pachomius palustris sp. nov. is distinguished from other species of this group by having a thinner and longer embolus with a slightly curved tip and copulatory openings with semi-spiral edges. A hypothesis about its probable reduced distribution is also discussed.