Onomastus pethiyagodai, Benjamin, 2010

Benjamin, Suresh P., 2010, Revision and cladistic analysis of the jumping spider genus Onomastus (Araneae: Salticidae), Zoological Journal of the Linnean Society 159 (3), pp. 711-745 : 734-739

ONOMASTUS PETHIYAGODAI SP. NOV.

( FIGS 18A–F , 19A–F , 20A–E , 21A–D , 22A–B )

Holotype: 1♂, Sri Lanka: Central Province, Nuwara Eliya District, Agrapathana, Agrabopath forest , 1100 m, 08.iii.2000. Deposited in MHNG.

Paratype: 3♀, label data as above. Deposited in MHNG.

Diagnosis: Males of O. pethiyagodai are readily separated from that of O. patellari s and O. indra by the absence of TA2. Separated from O. complexipalpis , O. kanoi , O. kaharian , and O. nigrimaculatus by the presence of a filiform conductor. O. pethiyagodai is most closely related to O. quinquenotatus , and may be separated by the shape of the conductor and MA ( Figs 19E , 20D , 22A ). Females are difficult to diagnose, but may be separated by details of internal genitalia.

REVISION AND CLADISTICS OF ONOMASTUS 735

Male holotype: Total length: 2.9; prosoma length: 1.5, width: 1.1. Leg I: femur 1.4, patella 0.2, tibia 1.2, metatarsus 1.0, tarsus 0.4. The spiders are green in nature. They turn whitish to pale yellow in alcohol. Prosoma oval, longer than wide. Opisthosoma longer than wide, lighter in colour. Leg I yellowish brown, leg II–IV light yellow. Legs are laterally marked with dark black blobs. All eyes except AME surrounded by dark rings. Chelicerae with pro- and retromarginal teeth, number not examined. Leg formula 4132. Leg spination: metatarsus V 4-2-2; tibia P 1-0-0, V 2-4-2, R 1-0-0; patella V 2-0-0; femur D 0-1-1, P 0-0-1, R 0-0-1. Palp as in Figures 19A–F , 20A–E , 22A–B .

Female paratype: Total length: 2.9; prosoma length: 1.2, width: 1.1. Leg 1: femur 1.0, patella 0.3, tibia 1.0, metatarsus 0.8, tarsus 0.4. Morphology similar to the male except for the following. Prosoma and opisthosoma lighter in colour. Legs with lateral black blobs. Leg spination: metatarsus V 2-2-2; tibia P 1-0-0, V 2-4-4, R 1-0-0; patella P 1-0-0, R 1-0-0; femur D 0-2-1, P 0-0-1, R 0-0-1. Epigynum and vulva as in Figure 21A–D .

Distribution: Endemic to the central highlands of Sri Lanka. Known from Agrapathana, Agrabopath forest and Horton Plains National Park.

Other material examined: SRI LANKA: Central Province, Nuwara Eliya District, Agrapathana, Agrabopath forest, 1100 m, 07.iii.2000, 1♂ 2♀; 1–30.vi.2003, 7♂ 7♀ (a single left palp on a sputter-coated SEM stub), all leg. Suresh P. Benjamin. Same locality, 08.iii.2000, 1♂ leg. Sudath Nanayakkara. Same local-

CO CD FD

ity, 18–21.ii.2007, 3♂ 2♀, leg. Suresh P. Benjamin and Ziyard Jaleel. Central Province, Nuwara Eliya District, Horton Plains National Park, c. 2000 m, 20–21.ii.2007, 15♂ 5♀, leg. Suresh P. Benjamin and Ziyard Jaleel. Deposited in MHNG.

ONOMASTUS QUINQUENOTATUS SIMON, 1900

( FIGS 23A–D , 24A–D , 25A–H )

Onomastus quinquenotatus Simon, 1900: 29 . 2♀ from Sri Lanka in MNHN 20771, examined.

O. quinquenotatus Wanless, 1980: 183 , fig. 2a–e. Designation of lectotype and paralectotype.

Diagnosis: Males are readily separated from O. patellari s and O. indra by the absence of TA2. Separated from O. complexipalpis , O. kanoi , O. kaharian , and O. nigrimaculatus by the filiform conductor. Separated from O. pethiyagodai and O. nigricauda by the shape of the MA ( Fig. 23B ). Onomastus quinquenotatus is most closely related to O. pethiyagodai and they may be separated from each other by the shape of the conductor and MA ( Fig. 23A–D ). Females are difficult to diagnose, but may be separated by details of the internal genitalia.

Male from Kandaela: Total length: 3.1; prosoma length: 1.6, width: 1.3. Legs I: femur 1.6, patella 0.5, tibia 1.5, metatarsus 1.3, tarsus 0.6. Prosoma round to oval, longer than wide, pale amber to light yellow. Eyes with black surrounds except for AME. Opisthosoma oval, longer than wide, lighter in colour, no markings. Living specimens green in colour. Leg 1 posterior laterally black along its length, all other legs uniformly yellow. Chelicerae light yellow, with seven retromarginal and three promarginal teeth. Spider ventrally light yellow. Leg formula 4132. Leg spination: metatarsus V 4-2-2; tibia D 2-0-0, V 2-4-4; patella D 1-0-0; femur D 0-2-2. Palp as in Figures 23A–D , 25A–H .

Female from Kandaela: Total length: 2.2; prosoma length: 1.8, width: 1.3. Leg 1: femur 1.4, patella 0.5,

CO

FD

tibia 1.6, metatarsus 1.3, tarsus 0.5. Morphology similar to the male except for the following: prosoma and opisthosoma lighter in colour; legs with lateral black blobs. Leg spination: metatarsus V 4-2-2; tibia V 2-2-2; femur D 0-1-2. Epigynum and vulva as in Figure 24A–D .

Distribution: Known from two localities, Kandaela and Hakgala, in the central highlands of Sri Lanka. The type locality in the labels is given as Sri Lanka ( Simon, 1900). The exact locality of the lectotypes in Sri Lanka is unclear. Onomastus quinquenotatus is endemic to Sri Lanka.

Other material examined: SRI LANKA: Central province, north-east district, Kandaela reservoir, 5.6 miles south-west of Nuwara Eliya, 2000 m 10–21.ii.1970, 1♂ 1♀, leg. Davis and Rowe, deposited in USNM; Hakgala, Hakgala forest, 27.vii.1996, 1600 m, ♂, leg. Suresh P. Benjamin. Deposited in MHNG.

Figures

Figure 18. Photographs of live Onomastus pethiyagodai sp. nov. from Agrapathana, Sri Lanka (MHNG). A–C, male. D–F, female.

Figure 19. Scanning electron micrographs of Onomastus pethiyagodai sp. nov. from Agrapathana, Sri Lanka (MHNG). A, D, left male palp, prolateral view. B, E, ditto, ventral view. C, F, ditto, retrolateral view. Abbreviations: C, conductor; E, embolus; MA, median apophysis; MAP, mesal branch of MA; PA, patella apophysis; TA1, tegular apophysis 1; TA3, tegular apophysis 3. Scale bars = 20 Mm (A, D, E, F), 30 Mm (B, C).

Figure 20. Scanning electron micrographs of Onomastus pethiyagodai sp. nov. from Agrapathana, Sri Lanka (MHNG). A, MA, prolateral view. B, PA, retrolateral view. C, ditto, ventral view. D, MA, ventral view. E, C and E prolateral view. Scale bars = 10 Mm (B, C, D), 20 Mm (A, E).

Figure 21. Onomastus pethiyagodai sp. nov. from Agrapathana, Sri Lanka. A, D, epigynum, ventral view. B, vulva, ventral view. C, ditto, dorsal view. Abbreviations: CD, copulatory duct; CO, copulatory opening; FD, fertilization duct. Scale bars = 0.2 mm.

Figure 22. Onomastus pethiyagodai sp. nov. from Agrapathana, Sri Lanka (MHNG). A, left male palp, ventral view. B, ditto, retrolateral view. Scale bar = 0.2 mm.

Figure 23. Onomastus quinquenotatus, male from Hakgala, Sri Lanka (MHNG). A, left male palp, ventral view. B, profile of MA. C, profile of C. D, left male palp, retrolateral view. Abbreviations: C, conductor; E, embolus; MA, median apophysis; PA, patella apophysis; TA1, tegular apophysis 1; TA3, tegular apophysis 3. Scale bars = 0.1 mm (B, C), 0.2 mm (A, D).

Figure 24. Onomastus quinquenotatus. A, female lectotype (MNHN 20771), epigynum, ventral view. B, female from Kandaela, Sri Lanka (USNM), epigynum, ventral view. C, vulva, ventral view. D, ditto, ventral view. Abbreviations: CO, copulatory opening; FD, fertilization duct. Scale bars = 0.2 mm.

Figure 25. Scanning electron micrographs of Onomastus quinquenotatus male from Hakgala, Sri Lanka (MHNG). A, D, G, prolateral view. B, E, H, ventral view. C, F, retrolateral view. Abbreviations: C, conductor; E, embolus; MA, median apophysis; PA, patella apophysis; TA1, tegular apophysis 1; TA3, tegular apophysis 3. Scale bars = 10 Mm (F, H), 30 Mm (B–E, G), 100 Mm (A).