Systaria bifidops, Jäger, 2018

Jäger, Peter, 2018, On the genus Systaria (Araneae: Clubionidae) in Southeast Asia: new species from caves and forests, Zootaxa 4504 (4), pp. 524-544 : 535-537

publication ID

https://doi.org/ 10.11646/zootaxa.4504.4.5

publication LSID

lsid:zoobank.org:pub:08E1A79F-BAA4-4EAB-9636-FE44BF7EB7F3

DOI

https://doi.org/10.5281/zenodo.5988014

persistent identifier

https://treatment.plazi.org/id/03AB87D4-E764-6F6F-12F9-FC52CC0879E5

treatment provided by

Plazi

scientific name

Systaria bifidops
status

sp. nov.

Systaria bifidops spec. nov.

Figs 29–30 View FIGURES 27–32 , 45–46 View FIGURE 45 View FIGURE 46

Type material: MALAYSIA: Malay Peninsula: Holotype: male, Pahang State, Fraser’s Hill , Telekom Loop , close to: 3°43'6.3''N, 101°45'9.86''E, 1300 m elevation, secondary forest, embankments along road, P. Jäger & T. Laufs leg. by hand, by night, 16.2.2015 ( SMF). GoogleMaps

Etymology. The species name is a combined name from the species Systaria bifida Dankittipakul & Singtripop 2011 and the Greek nomen “ops”, meaning “appearance” and referring to the similarity of the copulatory organs of the two species; term in apposition.

Diagnosis. Small spiders with body length of males: 9.0. The new species is similar to Systaria bifida in having a strongly developed proximal tegulum, a similar conformation of the embolus and the RTA ( Figs 29–30 View FIGURES 27–32 ), but may be distinguished by the much smaller bifid process (larger and more pronounced in S. bifida ), the shorter embolus with its tip resting close to the conductor (embolus distinctly longer and extending retrolaterally beyond the cymbial margin and conductor in S. bifida ) and the proximal tegulum stronger projecting proximo-prolaterally (projecting mainly proximally in S. bifida ).

Description. Male (holotype): prosoma length 4.5, prosoma width 3.2, anterior width of prosoma 1.7, opisthosoma length 4.5, opisthosoma width 2.3. Eyes: AME 0.35, ALE 0.22, PME 0.23, PLE 0.25, AME–AME 0.06, AME–ALE 0.02, PME–PME 0.29, PME–PLE 0.20, AME–PME 0.16, ALE–PLE 0.01. Cheliceral furrow with 3 promarginal and 2 retromarginal teeth. Spination: Palp: femur p001, d012, patella–tarsus with bristles, not counted in spination; femur I p0011, d111, r110, II p0101, d111, r111, III p111, d111, r111, IV p111(1111), d111(1111), r111(0122); patella I–IV 000; tibia I–II v220, III p11, d010, r11, v222, IV p11, r1(2)1, v2122 (2212); metatarsus I v200, II v220, III p122, r112, v212, IV p122, r122, v222. Leg formula: 4123. Measurements of palp and legs: Palp 4.8 (2.0, 0.7, 0.6, -, 1.5), I 16.9 (4.6, 1.8, 4.6, 3.8, 2.1), II 14.1 (3.9, 1.6, 3.7, 3.0, 1.9), III 12.1 (3.3, 1.4, 2.7, 3.1, 1.6), IV 17.5 (4.8, 1.7, 4.0, 4.9, 2.1). Palp as in diagnosis ( Figs 29–30 View FIGURES 27–32 ). Cymbium distinctly longer than tibia, tip pointed. RTA arising distally from tibia with its disto-dorsal margin humped. Embolus arising in 8- o’clock-position from tegulum, slightly bent, with broad base, its tip situated in 1-o’clock-position. Broad part of spermophor visible mainly at retrolateral tegulum. Colouration. Light reddish-brown without pattern. Fovea, eye region, chelicerae, labium gnathocoxae and margins of sternum darker. Opisthosoma greyish with light longitudinal stripe in anterior half.

Female: unknown.

Distribution. Known only from the type locality ( Figs 45–46 View FIGURE 45 View FIGURE 46 ).

Natural history. Specimens were found in a secondary forest in the leaf litter at an elevation of 1300 m.

SMF

Forschungsinstitut und Natur-Museum Senckenberg

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Clubionidae

Genus

Systaria

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