Kelawakaju mulu Maddison & Ruiz, 2022

Maddison, Wayne P., Ruiz, Gustavo R. S., Ng, Paul Y. C., Vishnudas, Ettukandathil Haridas & Sudhikumar, Ambalaparambil V., 2022, Kelawakaju gen. nov., a new Asian lineage of marpissine jumping spiders (Araneae, Salticidae, Marpissina), ZooKeys 1130, pp. 79-102 : 79

Kelawakaju mulu Maddison & Ruiz sp. nov.

Figs 2 , 5 , 10 , 16-20 , 23-28

Type material.

Holotype: male (SWK12-2610) in UBCZ from Malaysia: Sarawak: Mulu Nat. Pk., Summit Trail near Camp 1, 4.0486°N, 114.8610°E to 4.0483°N, 114.8614°E, 270 m elev., 21 March 2012, Maddison/Piascik/Ang WPM#12-072. Paratype: female (SWK12-2639) in UBCZ from Malaysia: Sarawak: Mulu Nat. Pk., Summit Trail near Camp 1, 4.0480°N, 114.8626°E to 4.0478°N, 114.8630°E, 290-320 m elev., 22 March 2012, Piascik/Ang/Andyson WPM#12-077.

Etymology.

From the name of the type locality (a noun in apposition).

Diagnosis.

Dark with only a dusting of golden scales, unlike the similar but more thoroughly scale-covered K. intexta (Figs 23-28 vs. 29-34). Embolus shorter than that of K. intexta , arising at 11 o’clock (Figs 16 vs. 22).

Description.

Male (based on holotype). Carapace length 2.85; abdomen length 3.05. Carapace dark brown, with white scales around cephalic region, between AME and sparse on thoracic region. Clypeus very narrow. Chelicera dark brown, elongate and projected, with a line of white scales on the prolateral face. Retromarginal tooth with two cusps, the more lateral long and curved (Fig. 5 ). Palp with elongate RTA. Embolus narrow and curved, but short, arising distally on the tegulum. Endite subrectangular, with no projection, dark brown. Labium dark brown and sternum light brown, with depressions along coxae I. Leg I light brown, with mid patella, mid tibia, proximal area of metatarsus and entire tarsus yellow. Legs II-IV yellow. Length of femur I 2.10, II 1.70, III 1.40, IV 1.65; patella + tibia I 3.10, II 2.40, III 1.65, IV 2.35; metatarsus + tarsus I 1.85, II 1.75, III 1.50, IV 1.70. Leg spination reduced: femur I d0, p0-0-1-0 (or p0-0-2-0), II d1-1-0, p0-0-1-0, III 0, IV d1-1-0, r0-0-1-0; patella I-IV 0; tibia I v2-2-2 (asymmetrical), II v1r-1r-1p, III-IV 0; metatarsus I-II v2-2, III 0, IV v0-0-1p. Abdomen dorsally dark brown, with two transverse wide light stripes, and a third over anal tubercle; ventrally gray.

Female (based on paratype SWK 12-2639). Carapace length 2.7; abdomen length 3.55. Color as in male, except when mentioned. Chelicera light brown. Retromarginal tooth with two cusps, the distal one almost twice the size of the other, both acute. Legs II-IV with narrow stripes of white scales. Length of femur I 1.90, II 1.50, III 1.45, IV 1.85; patella + tibia I 2.60, II 1.90, III 1.75, IV 2.60; metatarsus + tarsus I 1.40, II 1.30, III 1.60, IV 1.90. Leg spines as in male, except for femur III, as in II. Abdomen as in male, except for stripes, medially interrupted; ventrally white, with two longitudinal dark brown stripes extending from booklungs to spinnerets. Epigyne with a pair of small copulatory openings distant from the posterior border, which has a medial excavation; internally, copulatory ducts fuse with glandular portions, spiral backwards and enter the large spermathecae, from which fertilization ducts emerge.

Natural history.

Both specimens were collected on tree trunks on a forested slope.

Figures

Figures 2 - 9. Chelicerae of Kelawakaju species 2 - 4 oblique view with carapace 5 - 9 ventral view 2 K. mulu male holotype 3 K. intexta male holotype 4 K. frenata male from Guangxi 5 K. mulu male holotype 6 K. intexta male holotype 7 K. singapura male holotype 8 K. frenata male from Guangxi 9 K. frenata female from Guangxi. Scale bars: 1.0 mm.

Figures 10 - 15. Carapaces of Kelawakaju males 10 K. mulu holotype 11 K. intexta holotype 12 K. singapura holotype 13 K. frenata from Guangxi, Dongxing 14 K. leucomelas holotype 15 K. sahyadri holotype. Scale bars: 1.0 mm.

Figures 16 - 22. Kelawakaju mulu species group, genitalia 16 - 20 K. mulu 16 holotype male palp, ventral 17 same, retrolateral 18 paratype female SWK 12 - 2639 epigyne, ventral 19 same, vulva, dorsal 20 same, ventral 21, 22 K. intexta holotype male palp 21 retrolateral 22 ventral. Scale bars: 0.1 mm.

Figures 23 - 28. Kelawakaju mulu 23 - 25 holotype male SWK 12 - 2610 26 - 28 paratype female SWK 12 - 2639. Scale bars: 1.0 mm.