Pseudonemesia tabiskey, a new species of Pseudonemesia Caporiacco 1955 and new ultramorphological data for the Microstigmatinae (Araneae: Microstigmatidae) Author Rafael Prezzi Indicatti Author Osvaldo Villarreal M. text Journal of Natural History 2016 2016-07-04 50 33 2153 2167 journal article 10.1080/00222933.2016.1196297 19b7e66c-c917-4513-bd06-34dccc9fdd0a 1464-5262 165798 7A2310C6-6CC0-4391-B2AB-5DA0A2AC3574 Genus Pseudonemesia Caporiacco 1955 Pseudonemesia Caporiacco, 1955 : 266 (type species by monotypy, Pseudonemesia parva Caporiacco, 1955 ); Raven and Platnick 1981 : 17, figs 5, 13, 27, 31, 35, 45, 49 – 52; World Spider Catalog 2015 . Diagnosis Males of Pseudonemesia differ from those of Micromygale, Microstigmata Strand, 1932, Ministigmata, Xenonemesia and Envia by the oval palpal bulb and short, blunt embolus, curved to ventral side ( Figures 1 (a – e), 2(a,b), 11(a); Raven and Platnick 1981 , figs 45, 47, 48; Goloboff 1993 , fig. 3); and elevated pars thoracica ( Raven and Platnick 1981, fig. 51 ). Females can be distinguished from the Spelocteniza and above-mentioned genera (except from Microstigmata ) by the wide spermathecal bases and no twisted ducts ( Figure 1 (f)). It can be distinguished from Microstigmata by the absence of labial cuspules ( Figure 6 (d)); presence of corrugated trichobothrial bases ( Figure 5 (c,d); and no encrusting cuticule with dirt or debris ( Figure 6 (a – f)). In addition, Pseudonemesia resembles Envia by the elongated cymbium lacking an anterior notch ( Figure 2 (c – e); Goloboff 1993 , fig. 3); palpal bulb resting in a cymbial cavity ( Figure 1 (a,e); Goloboff 1993 , Figure 3 ); serrula with widely separated teeth and greatly flattened ( Figure 8 (c)); modified comb-shaped setae on prolateral border of the maxilla ( Figure 8 (b, d)); presence of flattened scaly cuticle with highest distal ends, without digitiform pustules ( Figure 4 (c,d); and tarsal organ about two-fifths away from the anterior edge ( Figure 4 (a,c,d)); all also here considered as diagnostic features for the Pseudonemesiini. It can be distinguished from Envia by lacking apical paraembolic apophysis on the palpal bulb ( Figures 1 (a – e), 2(a,b), 11(a)); presence of spines on cymbium ( Figures 1 a,e, 2(c – f); Raven and Platnick 1981 , figs 45, 48); tarsal organ rounded in lateral view and twice as elevated ( Figure 5 (b)); and elevated spermathecal bases ( Figure 1 (f); Raven and Platnick 1981 , fig. 54).