Walkerella Westwood

Peng, Yun-Cui Ma Yan- Qiong & Yang, Da-Rong, 2013, Description of two new species of Walkerella (Pteromalidae, Otitesellinae) from China with a key to species of the genus, Zootaxa 3702 (5), pp. 473-482 : 474-475

Key to species of Walkerella Westwood from figs

( Figs 1 B, 3E, 4C, 5A–G, 6A–G, 7 A–G)

1 Female.............................................................................................. 2

- Male................................................................................................ 8

2 POL (distance between posterior ocelli) <3× OOL (distance between posterior ocellus and eye margin)................. 3

- POL> 3× length of OOL............................................................................... 5

3 Marginal vein> 2× length of postmarginal vein. Fore leg tarsal length> 0.7× tibial length..................................................................................................... W. curtipedis Ma & Yang sp. nov. ♀

- Marginal vein 2× as long as postmarginal vein. Fore leg tarsal length <0.7× tibial length............................. 4

4 Stigmal vein subequal in length to postmarginal vein. Antennal club 2× as long as its maximum width W. benjamini Joseph ♀

- Stigmal vein shorter than postmarginal vein. Antennal club 2.4× as long as its maximum width....... W. jacobsoni Grandi ♀

5 Eye elongate, clearly <0.7× as wide as long. Basitarsus of mid leg longer than length of three following tarsomeres combined................................................................................ W. temereria Westwood ♀

- Eye more rounded,> 0.7× as wide as long. Basitarsus of mid leg shorter than length of three following tarsomeres combined 6

6 POL 4.8× as long as OOL. Scape> 8× as long as broad....................... W. nigrabdomina Ma & Yang sp. nov. ♀

- POL <4× as long as OOL. Scape about 6× as long as broad................................................... 7

7 Eye> 0.75× as long as wide. POL 3.67× as long as OOL. Metasoma as long as mesosoma...... W. kuruandensis Bouček ♀

- Eye 0.75× as long as wide. POL 3.5× as long as OOL. Metasoma slightly longer than mesosoma... W. microcarpae Bouček ♀

8 Antennae inserted far apart, distance between toruli much greater than diameter of a torulus. Pronotum wider than long.... 9

- Antennae inserted close together, distance between toruli less than diameter of a torulus. Pronotum longer than wide...... 12

9 Head oval, much wider than high........................................................................ 10

- Head subquadrate.................................................................................... 11

10 Distance between toruli less than between torulus and eye................................. W. temereria Westwood ♂

- Distance between toruli greater than between torulus and eye................................. W. benjamini Joseph ♂

11 Head with posterior transverse groove. Toruli with posterior margins not connected by a groove. Mandible falcate with both teeth pointed........................................................................ W. jacobsoni Grandi ♂

- Head without posterior transverse groove. Toruli with posterior margins connected by a groove. Mandible large and massive, with ventral tooth massive and obtuse......................................... W. curtipedis Ma & Yang sp. nov. ♂

12 Head with posterior transverse groove not produced forward to the eye margins................ W. microcarpae Bouček ♂

- Head with posterior transverse groove deepened and widened towards dorsal margins of eyes........................ 13

13 area raised anteriorly into a round smooth tubercle, and on either side with a strong lobe-like elevation, the elevations parallel to each other. Metasoma yellow..................................................... W. kuruandensis Bouček ♂

- Supraclypeal area raised into a sharp longitudinal carina, and on either side with a low but distinct ridge that diverges laterall. towards the mandibular base. Metasoma black............................... W. nigrabdomina Ma & Yang sp. nov. ♂

Figures

FIGURE 1. Walkerella nigrabdomina sp. nov., SEM, FEMALE. A, head. B, antenna. C, mandible. D, maxillary palpus and labial palpus. E, fore leg. F, mid leg. G, hind leg.