293 



Subgroup 1.2.: (1) Region L4b between L4-regions L41, L4v, and L4n present (BM: L4b 

 absent) (2) Apodeme swe vestigial or absent (BM: swe present along most of L41) (3) 

 Region L41 in dorsal wall extending far to the right (BM: L41 restricted to left margin of 

 dorsal wall) (4) Region L4d not prominent from outline of region L41 // L4d absent (BM: 

 L4d prominent from outline of L41 // L4d present) (5) Membranous part of pne-wall on 

 right side (BM: Membranous part of pne-wall dorsal or right-dorsal) (6) Distal part of 

 region Llm curving into dorsal wall of pouch Ive (BM: Distal part of Llm not curving 

 into dorsal wall of Ive) (7) Pouch Ive narrow (BM: Ive moderately broad) (8) Sclerite L2 

 ribbon- or plate-like (BM: L2 arch-shaped) (9) Process paa long (BM: paa very short) 

 (10) Sclerotisations of processes pda and paa = regions L41 and L2d separated (BM: L41 

 and L2d connected) (11) Region Rlc divided by stripe 4: sclerites RIA, RIB, or RIA, 

 RIC (BM: Rlc undivided, stripe 4 absent). 



Subgroup 1.2.2.: (12) Region L41 divided by articulation Al: sclerites L4A, L4B (BM: 

 L41 undivided, Al absent) (13) Region L4b as heavily sclerotised as L4-regions L41, L4v, 

 and L4n (SGI. 2.: L4b weaker than L4-regions L41, L4v, and L4n; BM: L4b absent) (14) 

 Region Llm rather broad (BM: Llm very narrow) (15)(? afa) Region Llm occupying 

 process afa (SGI.: afa membranous) (16) Region Llm divided in its posterior part by 

 membranous stripe 2 (BM: Llm completely undivided, stripe 2 absent) (17) Left part of 

 apodeme age abruptly deepened (BM: Left part of age not or gradually deepened). 



Subgroup 2.1.: (18) Pouch Ive: anteroventral part deeply invaginated to the left, 

 posteroventral part receded to the right (BM: anterior or anteroventral part of Ive not 

 deeper invaginated to the left than posterior part, posterior or posteroventral part not 

 receded to the right) (19) Process paa far on the right and far to the right of process pda 

 (BM: paa on the left and immediately to the right of pda) (20) Sclerotisations of processes 

 pda and paa = regions L41 and L2d separated (BM: L41 and L2d connected) (21) Sclerite 

 L4F present (BM: L4F absent) (22) Ventral insertion of muscle 15 far posteriorly and on 

 sclerite L4F // Muscle 15 present, not homologous with 15 of other subgroups (BM: Ventral 

 insertion of 15 far anteriorly // This 15 absent) (23) Left insertion of muscle b4b on top of 

 pouch pne (BM: Left insertion of muscle b4b in dorsal wall outside pouch pne) (24)! 

 Region Lla level (BM: Lla hood-shaped) (25)! Muscle 11 absent (BM: 11 present) (26) 

 Region Rlt rather large, occupying entire dorsal and anterior walls of invagination cbe 

 (BM: Rlt narrow, occupying only part of dorsal wall of cbe). 



Subgroup 2.2.: (27) Region L41 divided by articulation A5 or by a farther separation 

 homologous with A5: sclerites L4K, L4N (BM: L41 undivided, A5 absent) (28) Apodeme 

 swe absent (BM: swe present along most of L41) (29)? Muscle 110 present // Muscle 14 

 divided into anterior and posterior (= 110) bundle and posterior bundle shifted posteriad 

 to common sclerotisation of pda and paa (BM: 110 absent // 14 undivided and inserted on 

 L41 left-anterior to sclerotisation of paa and pda) (30) Region L4d directed anteriad (BM: 

 L4d directed to the right or right-anteriad) (31) Tooth pia absent (BM: pia present) (32) 

 Regions Rid and Rlv broadly connected posterior to membrane 17: sclerite RIJ (BM: 

 Rid and Rlv not or narrowly connected posterior to membrane 17) (33)? Muscle s2 

 extremely reduced (SG2.: s2 moderately reduced; BM: s2 not reduced and as strong as 

 si) (34) Posterior part of sclerite LI forming a ring (BM: LI not forming a ring). 



