Jacaena lunulata, Dankittipakul & Tavano & Singtripop, 2013
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publication ID |
https://doi.org/ 10.1080/00222933.2012.763059 |
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DOI |
https://doi.org/10.5281/zenodo.5196930 |
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persistent identifier |
https://treatment.plazi.org/id/A676E712-FFCE-FF9C-06FA-F9841095891A |
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treatment provided by |
Felipe |
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scientific name |
Jacaena lunulata |
| status |
sp. nov. |
Jacaena lunulata View in CoL sp. nov.
( Figures 1B, H View Figure 1 , 2B, C View Figure 2 , 3A–C, E View Figure 3 , 4D–F View Figure 4 , 6A–C View Figure 6 , 7C View Figure 7 , 8G View Figure 8 , 9D, E View Figure 9 , 12 View Figure 12 )
Sesieutes erawan Deeleman-Reinhold, 2001: 464 , ♂ from Doi Inthanon. Misidentification.
Sesieutes schwendingeri Deeleman-Reinhold, 2001: 461 , ♂♂ from Doi Inthanon and Doi Suthep. Misidentification.
Type material
Holotype: ♂, Thailand: Chiang Mai Province, Chomthong District, Doi Inthanon NP , Doi Inthanon , evergreen hill forest , 1600–1680 m, extraction of soil sample, 11 January 2006, P. Dankittipakul leg. ( MHNG, PDC 5746).
Paratypes: From type locality, pitfall trap, 25 March–23 April 2000, P. Dankittipakul leg., 1♀ ( MHNG, PDC 5747); litter sample, 10 September 2005, P. Dankittipakul leg., 2♂, 1♀, ( TNHM); evergreen hill forest , 1650 m, litter sample, 9 October 1999, P. Dankittipakul leg., 1♂ ( THNM, PDC 5748). Doi Inthanon , evergreen hill forest , 1750 m, litter sample, 15 January 2000, P. Dankittipakul leg., 1♂ ( THNM, PDC 5749). Doi Inthanon, evergreen hill forest, 1500 m, litter sample, 9 October 1999, P. Dankittipakul leg., 1♂, 2♀ ( THNM, PDC 5750). Doi Inthanon , evergreen hill forest , 1250 m, 6 November 1985, P.J. Schwendinger leg., 1♂ ( MHNG, misidentified as S. erawan ). Chiang Mai Province and District, Doi Suthep-Pui NP , Doi Suthep , 1200 m, 18 June 1987, P.J. Schwendinger leg., 1♀ ( MHNG, misidentified as S. schwendingeri ). Doi Suthep , 960 m, pitfall trap, 31 November 1986 – 2 January 1987, P.J. Schwendinger leg., 1♂ ( RMNH, misidentified as S. schwendingeri ) View Materials .
Diagnosis
Males of J. lunulata sp. nov. are similar to those of J. schwendingeri comb. nov. but differ by having a crescent-shaped conductor that is distinctly broader and strongly curved backward ( Figures 6A View Figure 6 , 9D, E View Figure 9 ), a tegulum that is greatly expanded, and the distal RTA of the male palp that is digitiform ( Figure 6C View Figure 6 ). In comparison, in J. schwendingeri comb. nov. the conductor is narrower and its sharply pointed apex is abruptly bent ( Figure 4A, C View Figure 4 ), the tegulum and the distal RTA are significantly smaller. Females can be distinguished by the rather simple internal genitalia, the ID of which consists of circular proximal ducts, the more convoluted ID, and the poorly defined spermathecae ( Figure 8G View Figure 8 cf. 8F).
Etymology
The specific epithet is derived from Latin adjective (lunulatus = crescent-shaped), referring to the lamina-shaped conductor on the male palp.
Description
Male (holotype). Total length 6.6. Carapace 3.2 long, 2.5 wide. Opisthosoma 3.4 long, 2.0 wide. Eye sizes and interdistances: AME 0.15; ALE 0.13; PME 0.10; PLE 0.13; AME–AME 0.06; AME–ALE 0.05; PME–PME 0.15; PME–PLE 0.16. MOQ 0.33 long; front width 0.33; back width 0.35. Leg formula 4123. Spination. Leg I: femur 1–1pl; tibia 8pl 7rl; metatarsus 4pl 4rl. Leg II: tibia 7pl 6rl; metatarsus 4pl 4rl. Leg III: tibia 1–1v 1pl; metatarsus 1–1v 1pl. Leg IV: tibia 1–2–2v 1–1rl; metatarsus 1–1–1–1v 1pl 1rl. Leg measurements: Leg I 8.1 (2.3, 0.9, 2.2, 1.8, 0.9); II 7.5 (2.1, 0.9, 1.9, 1.7, 0.9); III 6.7 (1.9, 0.9, 1.4, 1.6, 0.9); IV 9.4 (2.6, 1.0, 2.1, 2.5, 1.2).
Colouration and pattern ( Figure 1B View Figure 1 ): Carapace dark chestnut-brown; integument coarsely granulated. Chelicerae, sternum, labium and gnathocoxae dark reddishbrown. Coxae, trochanters and femora dark brown; patellae and tibiae brown, distal part of tibiae orange; metatarsi I–II brown, III–IV orange; tarsi orange. Opisthosoma ovoid; dorsum of opisthosoma dark grey, with pattern consisting of one pair of pale patches, followed by four transverse chevrons and pale area above spinnerets. Dorsal scutum occupying approximately one-third of opisthosoma length, posterior margin rounded, with oval extensions fusing with dorsal muscle apodemes.
Palp ( Figures 6A–C View Figure 6 , 9D, E View Figure 9 , 12A–C View Figure 12 ): Proximal RTA triangular in ventral view ( Figure 12A View Figure 12 ); apical surface partially membranous, slightly excavated, forming shallow concavity ( Figure 9D, E View Figure 9 ). Distal RTA digitiform, its apex blunt ( Figures 6C View Figure 6 , 12A, C View Figure 12 ). Conductor ( Figures 6A View Figure 6 , 9D, E View Figure 9 , 12A–C View Figure 12 ) crescent-shaped, enlarged and broad, semi-transparent, with heavily pigmented outer margin, sharply pointed apex curving backwards. Tegular apophysis hyaline, lanceolate, originating behind base of conductor, aligning with tip of embolus ( Figures 6A View Figure 6 , 9D View Figure 9 ).
Female (paratype, NHML, PDC 5747). Total length 8.1. Carapace 3.3 long, 2.5 wide. Opisthosoma 4.5 long, 2.7 wide. Eye sizes and interdistances: AME 0.11; ALE 0.13; PME 0.08; PLE 0.13; AME–AME 0.08; AME–ALE 0.05; PME–PME 0.15; PME– PLE 0.16. MOQ 0.38 long; front width 0.31; back width 0.35. Leg formula 1423. Spination. Leg I: femur 1–1pl; tibia 8pl 7rl; metatarsus 4pl 4rl. Leg II: tibia 7pl 6rl; metatarsus 4pl 4rl. Leg III: tibia 2–1v 1pl; metatarsus 1–1v 1pl. Leg IV: tibia 1–1–2v 1rl; metatarsus 1–1–1–1v 1pl 1rl. Leg measurements: Leg I 8.6 (2.3, 1.0, 2.3, 2.0, 1.0); II 7.9 (2.2, 1.0, 1.9, 1.8, 1.0); III 6.6 (1.8, 2.8, 1.5, 1.5, 1.0); IV 8.3 (2.3, 0.8, 2.0, 2.2, 1.0).
Colouration and pattern ( Figure 2B View Figure 2 ): Carapace dark chestnut-brown; integument coarsely granulated. Chelicerae, sternum, labium and gnathocoxae dark reddishbrown. Legs I–II brown, femora slightly darker than other segments, tibiae orangebrown distally; legs III–IV orange-brown except femora dark brown. Opisthosoma elongate-ovoid; dorsum grey, with pair of pale patches connected anteriorly, followed by four chevrons and pale area above spinnerets (first pair very faint and narrowed, disconnected medially).
Copulatory organ ( Figures 7C View Figure 7 , 8F View Figure 8 , 12D, E View Figure 12 ): Copulatory orifices situated medially on heavily sclerotized epigynal region ( Figures 7C View Figure 7 , 12D View Figure 12 ). Proximal half of insemination ducts forming two loops encircling copulatory ducts ( Figures 8G View Figure 8 , 12E View Figure 12 ); inner loop distinctly enlarged, filled with dark substance ( Figure 8G View Figure 8 ); distal half of ducts ascending anteriorly then traversing and descending to connect with poorly defined spermathecae ( Figures 8G View Figure 8 , 12E View Figure 12 ); glandular pores situated at anterior margin of spermathecae ( Figure 12E View Figure 12 , GF).
Natural history
Types of this new species were collected in evergreen hill forests of Doi Suthep and Doi Inthanon between 1250 and 1750 m.
Distribution
Chiang Mai Province, northern Thailand.
| MHNG |
Switzerland, Geneva, Museum d'Histoire Naturelle |
| RMNH |
Netherlands, Leiden, Nationaal Natuurhistorische Museum ("Naturalis") [formerly Rijksmuseum van Natuurlijke Historie] |
| TNHM |
University of Texas |
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Genus |
Jacaena lunulata
| Dankittipakul, Pakawin, Tavano, Maria & Singtripop, Tippawan 2013 |
Sesieutes erawan
| Deeleman-Reinhold CL 2001: 464 |
Sesieutes schwendingeri
| Deeleman-Reinhold CL 2001: 461 |