FIGURE 2 in The labidostommatid palpus: a morphological enigma (Acariformes: Prostigmata)

FIGURE 2: Labidostommatid palpi, DIC (A-D) and combined incident and brightfield (E), montaged light micrographs. Only some phaneres, depending on the focus, are labeled. Large arrows point to trochanter or its remnant, arrowheads—to areas of arthrodial cuticle at articulations: A — unidentified larva (Field Museum 92-15), combined from 14 focal planes (f.p.-s); B — unidentified PN, Field Museum 92-14, 3 f.p.-s; B' — same as B, other 3 f.p.-s, showing dorsal condylo-cotylar articulation at base of palp (thin arrow) and its two proximal articles (note absence of hinges or condyles between them); C, D — Labidostomma sp. (USA, Virginia), adult female, ventral view of asymmetrically developed palpi: C — left, asterisk indicates a trace of incomplete femorogenual coalescence, 15 f.p.-s, D — right, with that coalescence complete, 15 f.p.-s; D' — same as D, other 3 f.p.-s, showing pliable cuticle at proximal and distal articulations of basifemur; E — Baltic amber fossil of Labidostomma (Pseudocornutella) electri Sidorchuk & Bertrand, MGCP Ar-294, adult female, setal homologies partly reinterpreted, asterisk indicates a trace of incomplete genuotibial coalescence, 62 f.p.-s.Published as part of Lindquist, E.E. & Sidorchuk, E., 2015, The labidostommatid palpus: a morphological enigma (Acariformes: Prostigmata), pp. 337-350 in Acarologia 55 (3) on page 342, DOI: 10.1051/acarologia/20152172, http://zenodo.org/record/539735