Procheiridium judsoni Porta, Michalik & Proud, 2020

Porta, Andrés O., Michalik, Peter, Franchi, Ezequiel & Proud, Daniel N., 2020, The first fossil pycnocheiridiine pseudoscorpion (Pseudoscorpiones: Cheiridiidae Procheiridium gen. nov.) from Cretaceous Burmese amber, Zootaxa 4801 (1), pp. 142-150 : 143

Type species Procheiridium judsoni Porta, Michalik & Proud

Diagnosis.

A genus of the subfamily Pycnocheiridiinae with stout palps ( Fig. 4 ), coxae divergent posteriorly ( Fig. 3D ), a fourbladed rallum ( Figs 3C , 5F ), and a carapace with shallow furrows and enlarged anterior setae ( Figs 1A , 3A ).

Figures

FIGURE 1: Procheiridium judsoni n. gen. et n. sp., holotype (MLP 36246): A. Carapace; B. Tergites 1–3 showing details of the surface; C. Right palpus, femur, dorsal view; D. Habitus, dorsal; E. Detail of the lateral setae of the last tergites; F. Right palpus, femur, ventral view, with details of the setae; G. Left chela, ventral view of the hand; H. Same view of the moveable digit; I. Same view of the articulation. Scale bars: A, 0.2 mm; B, 0.05 mm; C, 0.2 mm; D, 0.5 mm; E–G, 0.05 mm; H, 0.1 mm, I, 0.05 mm.

FIGURE 3: Procheiridium judsoni n. sp., holotype (MLP 36246): A. Carapax; B. Right chelicera; C. Rallum; D. Right Coxae, E. Right leg I; legs not belonging to the holotype in the same amber sample: F. Right leg III; G. Right leg IV. Scale bars: A–B, 0.2 mm; C, 0.01 mm; D–G, 0.2 mm.

FIGURE 4: Procheiridium judsoni n. gen. et n. sp., holotype (MLP 36246): A. Right chela, dorsal view; B. Left chela, ventral view; C. Right palpus, trochanter to patella, ventrolateral view. Scale bars: A–C, 0.20 mm.

FIGURE 5: Procheiridium judsoni n. gen. et n. sp., holotype (MLP 36246): A. Right leg I, ventral view; B. Right tarsus III; C. Right tarsus II distal portion; D. Right chelicera and detail of the galea; E. Left chelicera, ventral view, showing rallum (arrow); F. Same, detail of rallum (arrow). Scale bars: A, 0.2 mm; B–D, 0.05 mm; E, 0.1 mm; F, 0.05 mm.