277 



region), the dorsal (and possibly part of the ventral) wall of fda (Rld-region), and the 

 dorsal and ventral walls of pia (Rlv-region). The regions Rlc and Rlt form a distinct 

 angle along the edge 16. Along its posterior margin Rlt has a posteriad-directed ridge 

 pva. At and near the posterior right edge of the right phallomere there is a membranous 

 area 17. The dorsal and ventral parts of Rl are (probably) connected anterior to this area 

 but separated (or only narrowly connected) posterior to it. 



The presence of sclerite R2 and of its articulations A6 and A7 is questionable. The 

 membranous stripe 4 and probably the articulations A8 and A9 and the tre-tendon are 

 missing. 



Musculature 



Muscles certainly present in the ground-plan (all shown in fig.3211-p) 



11: from the dorsal wall of the pne-pouch to the L4d-region (6.1.1., 6.3.4.). 



12: from sclerite LI in the left wall of the pne-pouch to the swe-apodeme on the L41- 



region (6.1.1., 6.3.1.). 



13: from sclerite LI in the posterior ventral wall of the pne-pouch to the L2a-region in 

 the anterior dorsal wall of the Ive-pouch (6.1.1., 6.2.1.). 



14: from the L2a-region anteriorly in the Ive-pouch to the swe-apodeme on the L41-region 

 (insertion on swe ventral to 12) (6.2.1., 6.3.1.). 



15: from the anterior ventral wall of the left complex to the left(-anterior) edge of the Ive- 

 pouch (6.2.1.). 



16a: from the anterior ventral wall of the left complex to the right(-anterior) edge of the 

 Ive-pouch (6.2.1.). 



16b: from the ventral wall of the left complex to the membranous ventral wall of the Ive- 

 pouch at or near the genital opening (ventral insertion posterior to 16a) (6.2.1.). 

 19: transversely within the dorsal wall of the left complex (6.5.). 



b4a, b4b: connect the dorsal parts of the left complex and of the right phallomere: left 

 insertions in the right marginal area of the Ive-pouch (b4a) or in the dorsal wall dorsal to 

 the pne-pouch (b4b); right insertions on the dorsal anterior margin of the fda-lobe (on 

 the tre-tendon, if it is present in the ground-plan) (6.7.1.). 



rl: from the right margin of sclerite R3 (to the right of keel 3) to the Rld-region in the 

 dorsal wall of the fda-lobe (6.7.1.). 



r2: from sclerite R3 to the cbe-invagination and the Rlt-region (and to sclerite R2, if it 

 is present in the ground-plan) (6.7.1.). 



r3: from the Rlc-region to the Rlv-region in the dorsal wall of the pia-tooth (6.7.1.). 

 si: from the left median anterior margin of the subgenital plate to the lateral ventral basal 

 line of the left complex (on the L41-region) (6.9.). 



s2: from the right median anterior margin of the subgenital plate to the lateral ventral basal 

 Hne of the right phallomere (on sclerite R3, to the left of keel 3) (6.9.). 

 s3: from the left median anterior part of the subgenital plate (posterior to si) to the median 

 ventral basal line of the left complex (on membrane) (6.9.). 



s4: from the right median anterior part of the subgenital plate (posterior to s2) to the 

 median ventral basal line of the right phallomere (on sclerite R3) (6.9.). 



