Utivarachna

Key to Utivarachna species from China

1. Male................................................................................................ 2

- Female.............................................................................................. 3

2. Bulb as long as wide (Song, Zhu & Chen, 1999: fig. 258G)................................................ U. gui

- Bulb distinctly longer than wide (Figs. 1 D, 2B)...................................................... U. arcuata

3. Copulatory opening located anteriorly (Figs. 3 B, 4A, 7B, 8A).................................................. 4

- Copulatory opening located medially or posteriorly........................................................... 5

4. Connecting ducts located on the lateral areas of copulatory openings (Figs. 3 C, 4B)......................... U. arcuata

- Connecting ducts located on the area between copulatory openings (Figs. 7 C, 8B).................... U. gongshanensis

5. Copulatory opening located medially (Figs. 5 B, 6A, Song, Zhu & Chen, 1999: fig. 256D)............................ 6

- Copulatory opening located posteriorly (Song, Zhu & Chen, 1999: fig. 255Q).................................. U. gui

6. Spermathecae almost touching each other (Figs. 5 C, 6B)............................................... U. fabaria

- Interdistance between spermathecae wider than 1.5 times their diameter (Song, Zhu & Chen, 1999: fig. 256D)... U. taiwanica