Belongs to the family Araneidae and is recognized as one of the few spider taxa that exhibits highly coordinated social behavior. It presents a pronounced sexual dimorphism, with adult females reaching body lengths of 15 to 20 mm, while males are notably smaller, measuring approximately 10 to 12 mm. Its morphology is characterized by a robust, reddish-brown prosoma covered with whitish setae. The opisthosoma is globose, featuring two well-developed humeral tubercles and a distinctive dorsal pattern consisting of two longitudinal light yellow or cream-colored stripes running along the dorsum, flanked by dark brown or grayish tones. Its legs are strong, spiny, and exhibit alternating light and dark bands that give them a highly characteristic brindled appearance under nocturnal light.

Geographical distribution: It is widely distributed across the South American Neotropics. Its presence is solidly documented in countries such as Brazil (particularly in the Cerrado, Pantanal, and fragmented areas of the Atlantic Forest), Paraguay, Uruguay, northern and central Argentina (reaching as far south as the temperate provinces of the Pampean region), and adjacent areas of Bolivia.

Habitat: It primarily inhabits open and semi-open biomes with scattered shrubby and woody vegetation. It is especially abundant in the Cerrado, the wooded savannas of the Chaco, subtropical forest edges, degraded pastures, and human-modified transitional areas, such as commercial forestry plantations, agricultural fence lines, and suburban gardens where it finds suitable structures for anchoring its complex and imposing web networks.

Feeding: It is a generalist and opportunistic insectivorous predator that exploits seasonal prey pulses. Its diet is mainly composed of medium to large flying insects such as beetles, flies, moths, grasshoppers, and hymenopterans. It highly efficiently exploits the massive swarms of winged termites and flying ants during the rainy season, times when the colony can capture thousands of prey items in a single night due to the massive capture surface area of their interconnected webs, which act as large filters in the canopy.

Behavior: It manifests one of the most complex forms of socialization among arachnids, classified as intermediate social or quasisocial. During the day, individuals gather compactly in a communal retreat (bivouac) constructed with dense silk threads, dry leaves, and debris, located on tree branches at a safe height to protect themselves from predators and solar desiccation. At twilight, the colony becomes active in a highly synchronized manner; hundreds of individuals emerge from the bivouac and cooperate in building a colossal three-dimensional support structure from which dozens of individual orb webs hang, which are actively built and defended by each spider. At dawn, they consume their individual orb webs to recycle the silk protein and return in perfect single file to the communal retreat, demonstrating remarkable spatial and temporal coordination.

Reproduction: This biological process is concentrated mainly during the transition between autumn and winter in the Southern Hemisphere. Mating occurs near the communal retreat, where males, abandoning their foraging habits on the web, court females through rhythmic vibrations on the tension threads. After copulation, gravid females deposit their eggs in communal silk egg sacs (cocoons) of cottony texture and yellowish or ocher coloration, which are firmly attached near the bivouac or in cracks in the bark of nearby trees. Each egg sac can contain between 200 and 500 eggs. Adult females die shortly after oviposition, cementing an annual life cycle. The spiderlings emerge in late winter or early spring and remain together in the communal nest, showing mutual social tolerance before dispersing via ballooning or founding new subcolonies.

Conservation status: This species is currently not evaluated (NE) by the International Union for Conservation of Nature (IUCN). However, it is a common and abundant taxon throughout most of its distribution range. Its main local threats stem from habitat loss due to deforestation, the fragmentation of native forests by agricultural expansion, and the indiscriminate use of broad-spectrum insecticides in agricultural fields adjacent to its natural colonies, which drastically reduces its food sources.