FIGURES 4–18 in Identity of the oribatid mite Oribata curva and transfer to Trichogalumna (Acari, Oribatida, Galumnidae), with discussion of nomenclatural and biogeographical issues in the ' curva ' species-group

FIGURES 4–18. Trichogalumna curva (Ewing, 1907). Permanently slide-mounted historical adult specimens (see text). Photomicrographs (except 4) with transmitted, differential interference contrast illumination: 4—cotype slide of Oribata curva Ewing, 1907; 5—dorsal habitus of cotype, with egg on right side; 6—distal part of right bothridial seta of cotype; 7—distal part of left bothridial seta of cotype; 8—left notogastral seta p 3 of cotype; 9—left porose area Aa of cotype at surface focus, with insert below at deep focus; 10—right porose area A1 of cotype (surface focus); 11—right porose area A2 of cotype (surface focus); 12—left porose area Aa of Ewing specimen from Missouri at surface (top, with base of seta lm) and deep (bottom insert) focus; 13—porose area A1 (surface focus) of Ewing specimen from Arcola, Illinois, showing absence of slits; 14— porose area A1 of Ewing specimen from Missouri at surface focus (and lyrifissure im), with insert at deep focus; 15—right porose area Aa of Jacot specimen from North Carolina at surface (top) and deep (bottom insert) focus; 16—same, but different specimen from North Carolina, showing absence of slits; 17—partial right pteromorph of Jacot specimen from North Carolina (anterior to top); pteromorph of Ewing specimen from Urbana, Illinois (deteriorated glycerin medium, anterior to right), showing accentuated striae. Scale bars: 100 µm (5), 10 µm (6–18); 6–16 to same scale