Figures 18–22 in The one-palped spider genera Tidarren and Echinotheridion in the Old World (Araneae, Theridiidae), with comparative remarks on Tidarren from America

Figures 18–22. Tidarren argo Knoflach and van Harten from Yemen (18–20, 22) and Echinotheridion gibberosum (Kulczynski) from Tenerife (21). (18) Female prosoma in frontal view. (19) Ditto, detail of left chelicera. (20) Male chelicerae separated from carapace, aboral view. Note frontal basal apodemes. (21) Male prosoma in frontal view showing amputation site of male palp. (22) Detail of remaining segments (coxa and trochanter) of amputated male palp. Scale bars: 0.2 mm (18, 20, 21); 0.05 mm (19); 0.02 mm (22).