FIGURE 1 in The labidostommatid palpus: a morphological enigma (Acariformes: Prostigmata)

FIGURE 1: Examples of shapes and setations of palpi in Labidostommatidae immatures (A-C) and adults (D-J); arrows point to supposed trochanter or its remnant when present, arrowheads point to areas of arthrodial cuticle at articulations: A — unidentified larva (Field Museum 92-15), ventrolateral view; B — unidentified protonymph (Field Museum 92-14), ventrolateral view; C, D — Eunicolina nova Sellnick sensu Feider & Vasiliu, ventral views (modified from Feider & Vasiliu 1968a, Figs 18, 19); C — tritonymph, D — adult female; E — Labidostomma sp. aff. nepalense Feider & Vasiliu, adult female, ventral view. Note: femoral seta v" is variable: unilaterally present in 1 specimen (Pulchauki, 2440 m a.s.l.) absent in other 4 (Godavari, 2 from 1830 m, 2 from 1525 m a.s.l.), position of tibial seta l" is variable (observed positions shown with dotted circles); F-H — Baltic amber fossils of Labidostomma (Pseudocornutella) electri Sidorchuk & Bertrand, adult females (modified from Sidorchuk & Bertrand 2013, Figs 3E, G): F — MGCP-Ar 294, right palpus, lateral antiaxial view, G — same as F, left palpus, lateral paraxial view, H — MGCP Ar-97, right palpus, ventral view (modified from Sidorchuk & Bertrand 2013, Fig. 3G); I, J — Labidostomma sp. (USA, Virginia), adult female, ventral views of asymmetrically developed palpi: I — right, J — left, asterisk indicates a trace of incomplete femorogenual coalescence.