247 

 Mesosternum basal width = 2.5 x mesocoxal line length; 



coxal lines straight; base evenly convex. Metasternum coxal 



lines not meeting at middle, continuous around coxa, not 



extending onto metasternum; sternum with medial punctures 



fine, few coarse lateral punctures. 



First visible abdominal sternite with coxal lines 

 continuous around coxa; broadly rounded between metacoxae; 

 coarse punctures laterally, fine punctures medially. 



Male genitalia with median lobe straight, short, 

 apically truncate; internal sac without noticeable 

 sclerotized structures; flagellum narrow, length = 1.8 x 

 median lobe length (Fig. 124a); base of flagellum straight 

 and swollen, sclerite at base parallel-sided and fang-like 

 (Fig. 124b-d) (1 dissected) . 



Female genitalia with spermathecal head ball-like; tail 

 swollen, recurved on itself (Fig. 124e) (1 dissected) . 



Presence of stridulatory files on occipital region of 

 head unknown (heads retracted) . No external sexual 

 dimorphism observed. 



Variation . The specimens studied differ in the central 

 pronotal stripe. The female, from Oaxaca, Mexico, has the 

 stripe solid. The male, from Campeche, Mexico, has the 

 stripe medially divided by an elongate yellow spot. This 

 difference could be sexual, geographic, or simply normal 

 variation within the population. 



Specimens examined . Only 2 specimens, representing 2 

 collection records, were studied. Label data: Mexico, 



