Bioacoustics of Anansus debakkeri

Male ( holotype ). Total length 1.20, carapace width 0.50. Leg 1: 4.30 (1.10 + 0.20 + 1.13 + 1.30 + 0.57), tibia 2: 0.77, tibia 3: 0.57, tibia 4: 0.90. Tibia 1 L/d: 21. Habitus as in A. ewe (cf. Figs. 6–8 ); carapace ochregray, mottled with black, sternum with distinctive pattern of black lines on each side (cf. Fig. 8 ), legs ochreyellow, abdomen gray with distinct black line dorsally reaching the spinnerets; distance PME–PME 20 µm; diameter PME ~80 µm (slightly oval shape); distance PME–ALE 15 µm; AME missing. Sternum wider than long (0.38/0.34), unmodified. Clypeus with tiny median projection on ventral rim (cf. Fig. 43 ); chelicerae with pair of simple frontal apophyses similar to A. aowin (cf. Fig. 34), with proximal apophyses directed backwards, without stridulatory ridges. Palps as in Figs. 57, 58 ; coxa unmodified, trochanter with distinct ventral apophysis, femur small, with prominent prolateral projection, tibia very large, procursus ( Fig. 59 ) consisting of proximal part with ventral pointed projection and distinctive sclerite set with brush of hairs, and large distal part, the latter complex and hinged towards proximal part; bulb simple, consisting of globular part and weakly sclerotized curved embolus ( Fig. 57 ); palpal tarsal organ capsulate. Legs without spines and curved hairs, few vertical hairs; retrolateral trichobothrium of tibia 1 at 25%, prolateral trichobothrium absent on tibia 1, present on other legs; tarsus 1 with about 10 pseudosegments, only distally fairly distinct. Variation. Tibia 1 in 7 other males: 0.93–1.13 (mean: 1.07). No other variation seen. Female. In general similar to male but clypeus unmodified. Tibia 1 in 8 females : 0.93–1.10 (mean: 1.03). Epigynum a simple dark frontal plate with pair of small pockets close together near posterior rim, and narrow posterior plate ( Fig. 60 ); externally similar to A. ewe (cf. Fig. 9 ); internally with conspicuous dark structures of unknown significance and pair of small pore plates ( Fig. 61 ).