Lychas jakli Kovařík 2023, sp. n.
Creators: name: Kovařík, FrantIšek
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Scorpiones
Buthidae
Lychas
Lychas jakli

description: Lychas jakli sp. n.
(Figures 1–42, Table 1)
http://zoobank.org/urn:lsId:zoobank.org:act:546F094D- 7C39-41A3-B1DC-33813FADDD98
TYPE LOCALITY AND TYPE DEPOSITORY. Indonesia, Maluku Province, Aru Islands, Wokam Island, 10-15 km NEE Waigua, 5°51'S 134°36'E; FKCP.
TYPE MATERIAL EXAMINED. Indonesia, Maluku Province, Aru Islands, Wokam Island, 10-15 km NEE Waigua, 5°51'S 134°36'E, February 2022, 1♂ 1♀ (holotype and paratype), leg. local collectors (Jakl and Häckel eXpedition), FKCP.
ETYMOLOGY. The specific epithet is a patronym honoring Stanislav Jakl (Czech Republic), an entomologist who helped to obtain the material.
DIAGNOSIS (♂ ♀). Total length 28–34 mm. In contrast to female, male has slightly narrower metasomal and pedipalps segments. Fingers of pedipalps not twisted proXimally. SiXth row of granules on movable fingers of pedipalps with one eXternal and no internal granules. Metasoma I–III with 10 carinae, of which two lateral on metasoma II–III are vestigial or absent in male, metasoma IV with 8 carinae. Dorsolateral carinae of second and third metasomal segments terminate in a tooth which is particularly conspicuous, but it is not enlarged. Subaculear tooth large, wide and pointed, with granules. Nearly entire body spotted, fingers and manus of pedipalps of uniform color. Patella of pedipalps dorsally darker than femur. Fifth sternite bears conspicuous eXpanded glossy zones in posterior part. Pectinal teeth number 11–12 in male and 11 in female. Pectines with fulcra inconspicuous to absent.
DESCRIPTION. Total length of adults 28–34 mm. Measurements of the carapace, telson, segments of the metasoma and segments of the pedipalps are given in Table 1. For habitus, see Figures 1–4. Sexual dimorphism: male has slightly narrower metasomal and pedipalps segments than female; fingers of pedipalps not twisted proXimally in both seXes.
ColoratIon (Figs. 1–4). Base color orange with dark spots; chelicera reticulated; fingers of chelicerae with black spots; carapace, tergites and sternites dominantly orange, with a pattern of black spots; pedipalps dorsally and laterally yellow with several dark spots, identical on manus and fingers of chela; ventral side of pedipalps yellow, without spots; patella of pedipalps dorsally darker than femur; legs have the same color and pattern as femur and patella of pedipalps; metasomal segments yellowish to reddish with brown spots mainly in posterior parts, metasoma V more dark; telson is orange with spots.
Carapace and mesosoma (Figs. 5–8). Carapace granulated, without carinae; mesosoma with one median carina and is granulated; sternite VII with four carinae and is granulated; sternite V with conspicuous eXpanded glossy zones in posterior part; pectines eXtending to around half of sternite IV in male and around end of sternite III in female; pectinal fulcra are inconspicuous to absent; pectinal teeth number 11–12 in male and 11 in female.
Metasoma and telson (Figs. 35–42). Entire metasoma and telson glabrous; metasoma I–III with 10 carinae, from which two lateral on metasoma II–III are vestigial or absent in male, metasoma IV with 8 carinae, metasoma V with 5 carinae; dorsolateral carinae of second and third metasomal segments terminate in a tooth which is particularly conspicuous but it is not enlarged; telson is elongate, with subaculear tooth wide, pointed, dorsally with one pair of granules and with one granule at the tip.
Pedipalps (Figs. 13–34). Femur with five granulated carinae; patella has seven smooth carinae, and chela has smooth carinae which may be discernible throughout the length of the fiXed finger; femur and patella finely irregularly are granulated; entire pedipalps are glabrous, with several short setae only; siXth row of denticles on the movable and fiXed fingers of pedipalps has one eXternal and no internal granules.
Legs (Figs. 9–12). Tibial spur is reduced on leg III and moderate on leg IV; femur with four partly granulated carinae; patella with five rather smooth carinae; tibia smooth; patella and tibia with only a few setae; tarsomeres of all legs internal bearing two rather irregular rows of setae.
Measurements. See Table 1.
AFFINITIES. The described features distinguish L. jakli sp. n. from all other species of the genus. Morphologically the closest species are L. variatus (Thorell, 1876), from Australia, Melanesia, and New Guinea, and L. armasi Kovařík, 2013 from Papua New Guinea. These two species can be distinguished from L. jakli sp. n. by having a strongly enlarged terminal tooth on dorsolateral carinae on metasoma II–III especially in males.
description: Published as part of Kovařík, FrantIšek, 2023, Lychas jakli sp n (Scorpiones: Buthidae) from Indonesia, pp. 1-8 in Euscorpius 367 on pages 3-7, DOI: 10.5281/zenodo.7616702