Wirada, Keyserling, 1886

Campuzano, Emmanuel F. & Ibarra-Núñez, Guillermo, 2018, A new species of the spider genus Wirada (Araneae, Theridiidae) from Mexico, with taxonomic notes on the genus and a key to the species, Zootaxa 4457 (3), pp. 495-500 : 500

Key to Wirada species

In this key Fig. refers to figures in this paper and fig. refers to figures from other authors as noted.

1 Males ............................................................................................................................................................................................. 2

- Females.......................................................................................................................................................................................... 7

2(1) Embolus straight, its length about three and a half times as its base width ( Figs 7–9, 11–13 ) ......................... W. mexicana n. sp.

- Embolus coiled, its length more than five times as its base width................................................................................................ 3

3(2) Embolus tip tubular ( Levi 1967, fig. 30; Lise et al. 2009, figs 30–32)......................................................................................... 4

- Embolus tip flattened ( Levi 1963, figs 14,19–20; Lise et al. 2009, figs 9–12)............................................................................. 5

4(3) TTA narrowed at the middle of its length ( Lise et al. 2009, fig. 30) ......................................................................... W. araucaria

- TTA almost straight ( Levi 1967, fig. 31) .......................................................................................................................... W. tijuca

5(3) Embolus tip grooved longitudinally ( Lise et al. 2009, figs 10–11)............................................................................... W. sigillata

- Embolus tip not grooved ( Levi 1963, figs 14,19–20) ................................................................................................................... 6

6(5) TTA almost straight; prolateral process of median apophysis small ( Levi 1963, fig. 14) ........................................... W. punctata

- TTA curved; prolateral process of median apophysis enlarged ( Levi 1963, fig. 19) ................................................. W. tovarensis

7(1) CO separated from labium of epigynum by about two diameters ( Figs 19, 21 ) ............................................... W. mexicana n. sp.

- CO separated from labium of epigynum by one diameter or less ( Levi, 1963, figs 16, 22; Lise et al. 2009, figs 24, 42) ........... 8

8(7) Spermathecae oblong (longer than wide) ( Lise et al. 2009, figs. 18, 38) ..................................................................................... 9

- Spermathecae almost as wide as long ( Levi, 1963, figs 15, 21) ................................................................................................. 10

9(8) Spermathecae separated by more than its width ( Lise et al. 2009, fig. 38), base of septum between CO wide (about one third of maximum atrium width) ( Lise et al. 2009, fig. 42) .................................................................................................... W. araucaria

- Spermathecae separated by less than its wide ( Lise et al. 2009, fig. 18), base of septum between CO narrow (about one eighth of maximum atrium width) ( Lise et al. 2009, fig. 24) ................................................................................................... W. sigillata

10(8) Labium of the posterior border of the atrium curved anteriorly at its sides ( Levi, 1963, fig. 16) .............................. W. punctata .

- Labium of the posterior border of the atrium straight all its length ( Levi, 1963, fig. 22).......................................... W. tovarensis

Figures

FIGURES 1–15. Wirada mexicana n. sp., male. 1, Opisthosoma, lateral-ventral. 2, Prosoma, dorsal. 3, Opisthosoma, dorsal. 4, Opisthosoma, stridulatory nubbins and pedicel. 5, Left palpus, apical. 6, Prosoma, stridulatory ridges. 7–9, Left palpus, prolateral, ventral and retrolateral. 10, Habitus, dorsal. 11–13, Left palpus, prolateral, ventral and retrolateral. 14–15, Habitus, lateral and ventral.

FIGURES 16–21. Wirada mexicana n. sp., female. 16–18, Habitus, dorsal, lateral and ventral. 19–21, Epigynum, 19, 21, ventral, 20, dorsal.