Ischnothyreus narutomii (Nakatsudi, 1942)

Tong, Yanfeng & Li, Shuqiang, 2008, The Oonopid Spiders (Araneae: Oonopidae) From Hainan Island, China, Raffles Bulletin of Zoology 56 (1), pp. 55-66 : 60-61

publication ID

https://doi.org/ 10.5281/zenodo.5341255

persistent identifier

https://treatment.plazi.org/id/03C77C60-1C1B-FFB7-FC11-0638FBAFFF45

treatment provided by

Diego

scientific name

Ischnothyreus narutomii (Nakatsudi, 1942)
status

 

Ischnothyreus narutomii (Nakatsudi, 1942) View in CoL

( Fig. 5A–D View Fig )

Material examined. – 2 males ( IZCAS), Baoyou Cave (19 ° 06'N 109 ° 01'E), Baoyou Village , Qicha Town, Changjiang County, Hainan Island, China, coll. Y. Song, X. Han, G. Deng and Y. Tong, 3 Apr.2005 GoogleMaps .

Diagnosis. – The male of this species (female unexamined) can be distinguished from the other congeners by the distinctly lobes on apical part of embolus, connected by developed membranous outgrowths.

Redescription. – Male. Body length 1.88; carapace 0.97 length, 0.74 width; abdomen 0.89 length, 0.52 width. Sides of carapace yellowish brown to gray, dorsally yellow, chelicerae, sternum, legs, dorsal and ventral scutum light yellow. Carapace with pair of dark brown, egg-shaped patches behind eyes; dorsally with three rows of short hairs. Eyes six in two rows, quite compactly arranged; ALE separated only by a line; posterior eyes in a straight row, touching each other. Base of cheliceral fang unmodified. Labium wider than long; endites with pointed tip. Leg I: femur with 2 prolateral and 1 small retrolateral spine, patella spineless, tibia with 4 pairs, metatarsus with 2 pairs of very long ventral spines. Leg II is similar to leg I except femur with only one prolateral spine. Measurements of legs: I 2.97 (0.85, 0.37, 0.83, 0.64, 0.28); II 3.19 (0.91, 0.39, 0.82, 0.74, 0.33); III 2.65 (0.79, 0.35, 0.56, 0.67, 0.28); IV 3.73 (1.07, 0.50, 0.87, 0.93, 0.36). Leg formula: 4> 2> 1> 3. Abdomen oval-shaped, dorsal scutum about three-fourths abdominal length. Bulbus of palp elongated, gradually tapering apically, obtusely bent before apex. Embolic part divided into distinct lobes, connected by some membranous outgrowths.

Female. Unexamined.

Distribution. – China (new to Hainan, Taiwan), Japan.

THE RAFFLES BULLETIN OF ZOOLOGY 2008

IZCAS

Institute of Zoology, Chinese Academy of Sciences

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Oonopidae

Genus

Ischnothyreus

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