Theridiosoma nigrivirgatum sp. nov., male holotype genitalia (NSMT-Ar 21717 A–D) and female paratype genitalia (NSMT-Ar 21718 E–G) A retrolateral view B ventral view C posterior-ventral view D prolateral view E ventral view F ventral view G dorsal view. Abbreviations: C conductor CD copulatory ducts E embolus EA embolic apophysis FD fertilization ducts MA median apophysis PC paracymbium S spermatheca ST subtegulum T tegulum. White and black arrows indicate a ridge that separate the two triangular surfaces and a sharply cornered terminal of the ridge, respectively. Scale bars: 0.1 mm.

 
 
  Part of: Suzuki Y, Hiramatsu T, Tatsuta H (2022) Two new species and a new genus of ray spiders (Araneae, Theridiosomatidae) from the Ryukyu Islands, southwest Japan, with notes on their natural history. ZooKeys 1109: 67-101. https://doi.org/10.3897/zookeys.1109.83807