Bioacoustics of Mallinella annulipes

Description. Male (here designated, MHNG, MAL–04/14). Total length 5.60; prosoma 3.44 long, 2.25 wide. Eye sizes and interdistances: AME 0.20, ALE 0.18, PME 0.16, PLE 0.18, AME–AME 0.10, AME–ALE 0.16, PME–PME 0.16, PME–PLE 0.30; MOQ: 0.46 long, 0.40 anterior width, 0.38 posterior width. Leg measurements: I 14.62 (3.41, 4.29, 4.18, 2.72), II 13.74 (3.20, 3.64, 3.56, 3.22), III 12.46 (3.00, 3.42, 3.52, 2.44), IV 16.90 (3.48, 4.64, 5.80, 2.94). Coloration ( Figs 712 , 719–722 .). Carapace dark reddish brown. Sternum brown. Chelicerae dark brown. Legs yellowish, except coxae pale yellow; femora and tibiae with dark brown distal and proximal annulations. Opisthosoma sepia. Dorsal pattern: first and second pairs represented by pale round spots obliquely arranged; third and fourth pairs by transverse pale spots distinctly smaller than anterior pairs; fifth pair situated far apart, larger than third and fourth pairs, interspersed with a small triangular patch. Legs modified: femora I–III dorsally with elevated hump and stridulating files. Palp ( Figs 730 , 739–742 ). RTA flange-like, broad at base, gradually tapering towards bluntly pointed apex. TA rostrated, without distinct ridge; apico-prolateral fold elongated, sharply pointed, directed mesad. Tegular spine broad, terminally blunt. Embolic base with parallel margins, anterior membranous area almost indistinct. Embolus broad, with deep longitudinal groove running from proximal part to apex; mesal flange subterminally divided into two sharply pointed rami. Female ( Singapore , MHNG). Total length 5.26; prosoma 3.23 long, 2.10 wide. Eye sizes and interdistances: AME 0.18, ALE 0.16, PME 0.16, PLE 0.16, AME–AME 0.08, AME–ALE 0.16, PME–PME 0.16, PME–PLE 0.26; MOQ: 0.42 long, 0.38 anterior width, 0.3368 posterior width. Leg measurements: I 13.72 (3.20, 4.02, 3.92, 2.56), II 12.71 (3.00, 3.42, 3.35, 2.39), III 11.66 (2.86, 3.22, 3.32, 2.28), IV 11.58 (3.26, 4.36, 5.44, 2.76). Coloration ( Fig. 713 ). Carapace dark brown. Sternum brown. Chelicerae dark brown. Legs yellowish, except coxae pale yellow; femora and tibiae with dark brown distal annulations. Opisthosoma dark sepia. Dorsal pattern: first and second pairs represented by pale round spots obliquely arranged; third and fourth pairs by transverse pale spots distinctly smaller than anterior pairs; fifth pair situated far apart, larger than third and fourth pairs, interspersed with a small triangular patch. Genitalia ( Figs 733–734, 737–738 , 744–747 ). Epigynal plate narrowed, V-shaped. Lateral borders digitiform, terminally blunt. Insemination ducts slightly less than spermathecal length. Spermathecae short and truncated, provided with small apical hump in anterior view. Natural history. Mallinella annulipes nom. nov. inhabits the forest floor of tropical lowland rainforests.