Gribodia nigra, Nguyen, Lien Thi Phuong & Xu, Zaifu, 2015

Nguyen, Lien Thi Phuong & Xu, Zaifu, 2015, Taxonomic notes on the genus Gribodia Zavattari, 1912 (Hymenoptera: Vespidae: Eumeninae) from Vietnam and China, with description of a new species, Zootaxa 4040 (4), pp. 458-464 : 464

Key to species of genus Gribodia

The characters are applicable to both sexes unless the sex is specified. The characters are taken from Bingham (1894) and Giordani Soika (1974), except G. cupreipennis and G. nigra sp. nov.

1. Body black, with a few yellow spots...................................................................... 2

- Body with many yellow marks.......................................................................... 3

2. Clypeus depressed from the middle to apical margin (frontal view), slightly convex from base to apical margin (lateral view); punctures on the body coarse; propodeum with pronounced edges; T2 1.1× as wide as long. Clypeus yellow except black lateral margins. Myanmar; Thailand; Malaysia; Vietnam.................................. G. cupreipennis (Bingham)

- Clypeus not depressed at the middle (frontal view), distinctly convex from base to apical margin (lateral view); punctures on the body less coarse; propodeum with weak edges; T2 nearly as long as wide. Clypeus black except two small yellow marks near basal margin. China: Hainan.............................................. G. nigra Nguyen & Xu , sp. nov.

3. Male............................................................................................... 4

- Female............................................................................................. 6

4. Vertex without depression behind ocelli. Malaysia: Sabah................................ G. guichardi Giordani Soika

- Vertex with wide and deep depression behind ocelli.......................................................... 5

5. Propodeal lateral carina well developed. S2 with large yellow spots, almost occupy entire sternum; S3–5 with yellow apical band sinuous, more or less widely interrupted medially. Digitus of genitalia see: Giordani Soika, 1974, Fig. 1 . Myanmar; Malaysia (including Sarawak); Indonesia: Sumatra, Java, Kalimantan.......................... G. confluenta (Smith)

- Propodeal lateral carina less developed. S2 with smaller yellow spots, quite separated from each other and at a distant from the apical margin; S3–5 completely black. Digitus of genitalia see: Giordani Soika, 1974, Fig. 2 . Indonesia: Java..................................................................................... G. javana Giordano Soika

6. F1 about 2 × as wide as long............................................................................ 7

- F1 about 1.5 × as wide as long........................................................................... 8

7. Clypeus almost flat, smooth, shiny, with small sparse punctures. T2 (lateral view) moderately convex with a few sparse punctures. S2 with two large yellow spots, S3–4 with yellow apical bands..................... G. guichardi Giordani Soika

- Clypeus slightly convex, with coarse dense punctures. T2 (lateral view) strongly convex with coarse dense punctures. All sterna black. India: Assam; Laos................................................. G. punctatissima Giordani Soika

8. Antenna long and slender: F1–8 longer than wide, rarely F9 or F10 more or less as long as wide. S2 with large yellow spots, almost occupy entire sternum; S3–5 with yellow apical bands sinuous, more or less widely interrupted medially, rarely reduced to lateral spots....................................................................... G. confluenta (Smith)

- Antenna short: F8 as long as wide, F9–10 distinctly wider than long. S2 with small yellow spots, separated from each other and at a distant from the apical margin; S3–6 entirely black................................... G. javana Giordani Soika

Figures

FIGURES 1 – 6. Gribodia cupreipennis, ♀. 1. Head, frontal view, 2. Head, lateral view, 3. Vertex, dorsal view, 4. Left antenna, 5. Propodeum, 6. T 1 – 2, dorsal view.