serrana group

Species included. Tullgrenella serrana Galiano, 1970, T. legalissima Marta & Hagopián sp. nov. (only female), T. aisenbergae Marta sp. nov., T. sciosciae Marta & Bustamante sp. nov., T. galianoae Marta sp. nov. and T. gertschi Galiano, 1981 .

Diagnosis. Males can be recognized by the pointed cymbium, the embolus of left palp originating at about 9 o’clock position, the tegulum with a middle-central C-shaped constriction, and the shorter and sclerotized embolus, usually without globose tegular membranous process (Figs 4D, 6G–I, 33C, 36C, 40C). Females have posterior-ventral border between the copulatory opening and posteriorly-opening coupling pocket, and the second loop of copulatory ducts in medial-dorsal epigynum (Figs 5B–D, 7K–O, 34C, 35C, 37C, 39C, 41C, 42C).

Distribution. Brazil (Bahia, São Paulo, Minas Gerais, Santa Catarina, and Rio Grande do Sul), Uruguay (Cerro Largo, Durazno, Maldonado, Montevideo, Río Negro, Rocha, Salto, Treinta y Tres) and Argentina (Buenos Aires, Córdoba, Salta and Santiago del Estero) (Figs 53A–B).

Natural history. These species are associated with soil, under rocks. This species group is associated with the Chacoan subregion, including formations of Mixed Ombrophilous Forest, and few records in the South American Transitional Zone, but not exceeding it (Figs 53A–B). At least in the Chacoan subregion, the species live in sympatry, and only T. gertschi occurs more expansively, toward the Northeast of Brazil (Figs 53A–B). The variation in altitudinal occurrence of this species group is 8–1013 m a. s. l. (Figs 53A–B) .