Telson, Pearse, 1952

Soleglad, Michael E., Fet, Victor, Graham, Matthew R. & Ayrey, Richard F., 2016, Graemeloweus, a new scorpion genus from northern California, USA (Scorpiones: Vaejovidae), Euscorpius 227, pp. 1-38 : 10

Telson

The telson of genus Graemeloweus (see Figure 6) is formed as in most vaejovids, lacking the vesicular ridges which are diagnostic of genus Kovarikia (see Soleglad, Fet & Graham (2014: 6–8: fig. 5)). The subaculear setal pair is located on vesicle/aculeus juncture, not on the aculeus base as in Kovarikia . Also, the vesicular linear patch found on dorsal surface of adult Kovarikia males is not found on male Graemeloweus specimens (see Soleglad, Fet & Graham (2014: 8, fig. 5)).

Laterobasal Aculear Serrations (LAS) are absent in genus Graemeloweus . Fet, Soleglad & Brewer (2006: tab. 1) examined 80 species in family Vaejovidae stating whether a LAS is present and if so, the number of spines present (note, 33 of these were verified with SEM microscopy). Interestingly, most of the species in their study that lacked a LAS were contained in subfamily Vaejovinae (ten out of twelve), and a majority of these were in genera Pseudouroctonus and Uroctonites . Also of note, three species in Pseudouroctonus that exhibited a LAS were three closely related species, P. andreas , P. castaneus , and P. thompsoni .