Chrysilla lauta Thorell, 1887

Kanesharatnam, Nilani & P. Benjamin, Suresh, 2019, Multilocus genetic and morphological phylogenetic analysis reveals a radiation of shiny South Asian jumping spiders (Araneae, Salticidae), ZooKeys 839, pp. 1-81 : 1

Chrysilla lauta Thorell, 1887 Figs 19 A–E, 20A, B

Material examined.

1♂ (IFS_SAL_699), Sri Lanka, Western Province, Panadura, Mahabellana, along Bolgoda south lake, 9 m, 06°42'48"N, 79°54'09"E, beating, -XII-2008, leg. SP Benjamin and SK Dayananda.

Diagnosis.

This species is closely related to C. volupe and C. deelemani Prószynski, Deeleman-Reinhold, 2010 in the general form of palpal structure and is distinguishable from them by the abdominal scutum (Fig. 19A, B) and absence of “M” -shaped orange scales on the dorsal abdomen, round shape of PLT, and comparably stouter RTA (Figs 19D, E, 20A, B).

Description.

Male. Prosoma arranged with iridescent blue and reddish orange scales (Fig. 19A, B). Edges of prosoma covered with thin line of iridescent blue scales. AME and ALE black in colour, enclosed with reddish orange scales. Clypeus with blackish blue iridescent scales. Reddish brown chelicerae with two promarginal and one retromarginal teeth, sternum oval-shaped covered with iridescent scales. First pair of legs blackish blue, long and larger than other pairs. Other legs beige in colour.

Narrow abdomen tapers to the iridescent blackish blue spinnerets. Dorsum of abdomen covered with iridescent blackish blue scutum decorated with silvery markings (Fig. 19A). Ventrum blackish grey in colour.

Palp metallic blue, except for golden yellow cymbium. Cymbium elongated, narrower at the distal end (Figs 19 C–E, 20A, B). Embolus medium sized, bent at the tip. Sperm duct clearly visible at the shoulder of tegulum. Posterior lobe of tegulum is rounded, extended diagonally. Apical portion of bulbus narrow extending beyond the distal end of tegulum (Figs 19D, E, 20A, B). RTA with broad based, with a bulge at the dorsal edge, sharply pointed, bent forward at the tip (Figs 19D, E, 20A, B).

Measurements.TL 5.00, PL 2.10, PW at PLE 1.65, AL 2.80, AW 3.08. Eye field: diameter of AME 0.42, PLE 0.31, ALE 0.25, PME 0.09, PME-PME 1.16, PLE-PLE 1.22, ALE-PME 0.41, ALE-PLE 0.51. Leg I: TR 0.32, FM 1.45, PT 0.59, TB 1.24, MT 0.81, TA 0.54; Leg II: TR 0.31, FM 1.23, PT 0.54, TB 0.78, MT 0.65, TA 0.56; Leg III: TR 0.27, FM 1.32, PT 0.42, TB 0.63, MT 0.75, TA 0.54; Leg IV: TR 0.29, FM 1.23, PT 0.34, TB 1.20, MT 1.21, TA 0.66.

Female. Unknown.