35 

 (Fig. 15a); not recurved meeting in a straight line (Fig. 



15b) ; meeting with a series of punctures or undulations 



(Fig. 15c); meeting as a single tooth (Fig. 15e) ; meeting 



with two widespread teeth (Fig. 15d) ; or meeting with many 



teeth (Fig. 15f) . 



The mesosternal line behind the mesocoxa is variable 



in its structure from species to species. It can be a 



simple line (Fig. 16a) which is single-sided, a groove 



(Fig. 16b) which is double-sided, or a groove which is 



notably deeper on one end and leads into a large pit (Fig. 



16c) . This pit is most often present at the medial end of 



this line, but the groove can be deepened at the lateral 



end (for example, I. n. sp . 13) . 



First Visible Abdominal Sternite 



The coxal lines on the first visible abdominal 



sternite extend posteriorly from the medial side of the 



metacoxa. They are variable in length from specimen to 



specimen and are of little use in determining species. 



This first visible abdominal sternite can be rounded, 



broadly rounded or truncate between the metacoxa at the 



junction with the metasternum. 



Male Genitalia 



The internal sac of the male genitalia is held 



inverted within the median lobe (Fig. 17a) . During 



copulation, the internal sac is everted, exposing any 



microstructure and extending the flagellum (Fig. 17b). The 



median lobe, internal sac, and flagellum are the true 



