págs. 1-6
págs. 7-11
The small Notoschoenomyza sulfuriceps Malloch, 1934 (Diptera: Muscidae) from the Pampean province in South America
págs. 13-19
Joergensenella, a new subgenus of Neotropical Megachile (Hymenoptera: Megachilidae), with a key to Argentinean Megachile with specialized facial pollen-harvesting hairs
págs. 21-46
Palynoflora from the La Anita Formation (Maastrichtian), Austral-Magallanes Basin, Argentina
Patricio Emmanuel Santamarina, Viviana Dora Barreda, Damián Moyano Paz, Camila Tettamanti, Ari Iglesias, Daniel G. Poiré, Augusto N. Varela
págs. 47-56
págs. 57-73
The crab spider genus Uraarachne Keyserling (Araneae: Thomisidae) in Argentina: a proposal of its senior synonymy over Plancinus Simon, and description of four new species.
págs. 91-130
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