Oxyopes, Latreille, 1804

Lo, Ying-Yuan, Cheng, Ren-Chung & Lin, Chung-Ping, 2021, Species delimitation and taxonomic revision of Oxyopes (Araneae: Oxyopidae) of Taiwan, with description of two new species, Zootaxa 4927 (1), pp. 58-86 : 65

Key to Oxyopes species of Taiwan

1 R atio of female abdomen length to width greater than 2.5 ( Fig. 11a ); apex of male cymbium longer than two-thirds the total cymbium length ( Fig. 6 c–e)............................................................................ 2

- Ratio of female abdomen length to width smaller than 2.5 ( Fig. 11c ); apex of male cymbium shorter than two-thirds the total cymbium length ( Fig. 7 c–e)............................................................................ 5

2 Posterior edge of epigyne with a median protrusion ( Figs 6a , 8a ); male palp with two separate retrolateral tibial apophyses ( Figs 6e , 8e )............................................................................................. 3

- Posterior edge of epigyne without a median protrusion ( Fig. 3a ); male palp with four or two adjacent retrolateral tibial apophyses ( Fig. 3d )......................................................................................... 4

3 Median protrusion of epigyne acuminate; cymbium of male palp laterally extended at the base ( Figs 6a, 6d )...................................................................................................... O. macilentus

- Median protrusion of epigyne column-shaped; cymbium of male palp without lateral extension at the base ( Figs 8a, 8d ).............................................................................................. O. striagatus

4 Epigyne shield-like in shape; base of cymbium with a hamulus-like process (see Lo & Lin 2016: figs 5–7)..... O. shushilae

- Posterior edge of epigyne semi-ring shaped; basse of cymbium without lateral extension ( Figs 3a, 3d )........ O. fujianicus

5 Distal portion of copulatory ducts distinctly separated; dorsal retrolateral tibial apophysis spearhead-shaped and adjacent to ventral retrolateral tibial apophysis ( Fig. 5 d–e)........................................................ O. hasta

- Copulatory ducts close distally; dorsal and ventral retrolateral tibial apophyses distinctly separated ( Figs 7e , 10 d–e)....... 6

6 Copulatory ducts with distal transversal twist; dorsal retrolateral tibial apophysis incisor tooth-shaped ( Figs 9 b-e).................................................................................................. O. taiwanensis

- Copulatory ducts question mark-shaped and without distal transversal twist; dorsal retrolateral tibial apophysis ridge-shaped ( Figs 7 b-e).................................................................................. O. sertatus

Figures

FIGURE 3. Oxyopes fujianicus Song & Zhu, 1993. (a–b) Epigyne (TESRI Ar1357): (a) ventral; (b) dorsal. (c–e) Palp (TESRI C04009): (c) prolateral; (d) ventral; (e) retrolateral. Scale bars: 0.2 mm.

FIGURE 5. Oxyopes hasta sp. nov. (a–b) Epigyne (TESRI Ar0532): (a) ventral; (b) dorsal. (c–e) Palp (TESRI Ar2822): (c) prolateral; (d) ventral; (e) retrolateral. C: conductor; CD: copulatory duct; dRTA: dorsal retrolateral tibial apophysis; Em: embolus; MA: median apophysis; FD: fertilization duct; S: spermatheca; SE: sclerotized edge; vRTA: ventral retrolateral tibial apophysis. Scale bars: 0.2 mm.

FIGURE 6. Oxyopes macilentus L. Koch, 1878. (a–b) Epigyne (TESRI CS041): (a) ventral; (b) dorsal. (c–e) Palp (TESRI Ar2762): (c) prolateral; (d) ventral; (e) retrolateral. Scale bars: 0.2 mm.

FIGURE 7. Oxyopes sertatus L. Koch, 1878. (a–b) Epigyne (TESRI Ar0440): (a) ventral; (b) dorsal. (c–e) Palp (TESRI CS- 061): (c) prolateral; (d) ventral; (e) retrolateral. Scale bars: 0.2 mm.

FIGURE 8. Oxyopes striagatus Song, 1991. (a–b) Epigyne (TESRI CX018): (a) ventral; (b) dorsal. (c–e) Palp (TESRIAr1758): (c) prolateral; (d) ventral; (e) retrolateral. Scale bars: 0.2 mm.

FIGURE 9. Oxyopes taiwanensis sp. nov. (a–b) Epigyne (TESRI Ar1776): (a) ventral; (b) dorsal. (c–e) Palp (TESRI Ar1313): (c) prolateral; (d) ventral; (e) retrolateral. Scale bars: 0.2 mm.

FIGURE 10. Oxyopes taiwanensis sp. nov. (a–b) Epigyne (TESRI Ar1776): (a) ventral; (b) dorsal. (c–e) Palp (TESRI Ar1313): (c) prolateral; (d) ventral; (e) retrolateral. C: conductor; CD: copulatory duct; CO: copulatory opening; dRTA: dorsal retrolateral tibial apophysis; Em: embolus; MA: median apophysis; FD: fertilization duct; S: spermatheca; SE: sclerotized edge; vRTA: ventral retrolateral tibial apophysis. Scale bars: 0.2 mm.

FIGURE 11. Habitus of Oxyopes jujianicus Song & Zhu, 1993 and Oxyopes hasta sp. nov. (a) O. fujianicus, female; (b) O. hasta, female; (c) O. hasta, female (TESRI Ar2824); (d) O. hasta, male (TESRI Ar2822). Scale bars (c–d): 2 mm.