LEXIPHANES NORTH OF MEXICO — BALSBAUGH 



675 



Discussion : L. semimilum is not a synonym of L. guerini Perbosc, as 

 indicated in the catalogues of Clavareau (1913), Leng (1920), Leng and 

 Mutchler (1933), Blackwelder (1939, 1946). Theii' synonymization 

 with L. guerini occurred through misinterpretation of Henshaw's 

 checklist (1885) in which L. seminulum is listed last, unnumbered, and 

 spaced apart, under the genus Monachus. It appears that Henshaw 



Figure 5. — Geographic distribution of Lexiphanes seminulum (Suffrian). 



considered L. seminulum a species of uncertain value and position 

 rather than a synonym of L. guerini. The distribution of L. guerini, 

 being west of the Mississippi, (one specimen labled "D.C.," is be- 

 lieved to be a labeling error) further substantiates that these two 

 allopatric species are not synonyms. 



Male genitalia: The length of the aedeagus is 0.69 mm. and its 

 width is 0.60 mm. The effect presented by the aedeagus is that of 

 being long and slim. The dorsal edge of the lateral plates rises from 

 the apex at an angle of about 35°. The ventral apical lobe tapers 

 from its apex, where it is quite truncate. Ten specimens were 

 dissected. 



Female genitalia: The spermatheca is of average size. The free 

 end tapers to a point. It also difTers from L. affinis by behig more 

 acutely angled. Two specimens were dissected. 



