Bioacoustics of Austrohahnia

Description. Female. Total length 3.10–4.90 (n = 27). Chelicerae with distinct lateral condyle and stridulatory files laterally. Three promarginal and three to five retromarginal teeth. Sternum slightly wider than long or as long as wide. Venter of abdomen with a patch of thick, short setae posteriorly ( Fig. 2I ). Leg formula: 4123. Carapace brown; cephalic region elevated. Sternum brown, lighter in the middle. Abdomen blackish brown, dorsally with a pale yellow chevrons or a stripe along the abdomen; ventrally brown with irregular spots. Legs pale yellow with brown rings and/or spots. Tracheal spiracle located closer to the spinnerets than to the epigastrium. Epigyne ( Fig. 3 ) with two large copulatory opening, spherical or flared, located in an atrium close to epigastric furrow. Copulatory duct well sclerotized, lead to spherical spermatheca; distinct middle stretch of copulatory duct. Small secondary receptacle located directly on copulatory duct. Male. Total length 2.40–4.40 (n = 8). Chelicerae as in female; three promarginal and three to four retromarginal teeth. Sternum slightly wider than long. Abdomen as in female ( Fig. 1G ). Leg formula: 4123. Other characters as in female, except for the leg femora can be uniformly dark brown. Palp ( Figs 1C–E , 2E–G ): patella globose, with a strong patellar apophysis with apical tapering; tibia with two retrolateral tibial apophyses, one of them (most dorsal) strong and thick, similar shape to patellar apophysis, the other retrolateral tibial apophysis slender and strongly sclerotized, tip pointed, hook-shaped. Embolus originating retro-apically (at 1 o’clock), curved clockwise around the tegulum and ending near the membranous median apophysis. Composition. Four species: Austrohahnia praestans Mello-Leitão, 1942 , Austrohahnia melloleitaoi ( Schiapelli & Gerschman, 1942 ) new combination , Austrohahnia catleyi new species , and Austrohahnia isophthalma ( Mello-Leitão, 1941 ) new combination , nomen dubium .