Bioacoustics of Pimoidae

Pimoidae . Hormiga (1993) , type genus by monotypy Pimoa Chamberlin and Ivie. Diagnosis Male palpus with a retrolateral cymbial sclerite, a dorsoectal cymbial process, and cuspules on either the cymbial process ( Pimoa ; Hormiga 1994a : figs 11, 68) or the dorsal surface of the cymbium ( Weintrauboa ; Fig. 1E , 5E ). Conductor and median apophysis present in most species. Embolus continuous with the tegulum (the typical linyphiid embolic division is absent), with an embolic process of varying morphology. The epigynum is protruding, with a dorsal to lateral fold or groove with the copulatory opening at the distal end ( Hormiga, 1994a : figs 14, 414; Fig. 3A ); fertilization ducts are anteriorly ( Pimoa ) or mesally ( Weintrauboa ) orientated. As in linyphiids, pimoids have stridulatory striae on the ectal side of the chelicerae (but the striae are absent in Weintrauboa ), build sheet-webs and exhibit autospasy at the patella-tibia junction. Description See Hormiga (1994a) for family description. Phylogenetics The monophyly of Pimoidae is supported by the following four unambiguous putative synapomorphies: a dorsoectal cymbial process, cymbial cuspules, a retrolateral cymbial sclerite (PCS) and the embolic process (PEP). Composition Two genera, Pimoa Chamberlin & Ivie and Weintrauboa new genus .

Diagnosis: Male pimoids are distinguished form other araneoid spiders by the following combination of characters: palpus with integral paracymbium (intersegmental in Weintrauboa ), a retrolateral cymbial sclerite, a dorsoectal cymbial process, and cuspules (modified macrosetae) on either the cymbial process ( Pimoa ; Hormiga, 1994a : figs 11 and 68; Nanoa , Fig. 1A–B, D ) or the dorsal surface of the cymbium ( Weintrauboa ; Hormiga, 2003 : figs 1e, 5e). Conductor and median apophysis present in most species. Embolus continuous with the tegulum (the typical linyphiid embolic division is absent), with an embolic process of varying morphology (absent in Nanoa ). The epigynum is protruding (except in Nanoa ), with a dorsal to lateral fold or groove with the copulatory opening at the distal end ( Hormiga, 1994a : figs 14, 414; Figs 3C , 5A ); fertilization ducts are anteriorly ( Pimoa ), posteriorly ( Nanoa ) or mesally ( Weintrauboa ) orientated. As in linyphiids, pimoids have stridulatory striae on the ectal side of the chelicerae (but the striae are absent in Weintrauboa and Nanoa ), build sheet-webs and exhibit autospasy at the patellatibia junction. Description: See Hormiga (1994a) for family description. Phylogenetics: The monophyly of Pimoidae is supported by the following four unambiguous putative synapomorphies: a dorsoectal cymbial process; cymbial cuspules (modified macrosetae); a retrolateral cymbial sclerite (pimoid cymbial sclerite, PCS); and the embolic process (pimoid embolic process, PEP, lost in Nanoa ). Composition: Three genera, Pimoa Chamberlin & Ivie , Weintrauboa Hormiga and Nanoa gen. nov.