| Title | Author | Publication Year | PDF File |
|---|---|---|---|
| Hymenoptera of Costa Rica. | 1995-05-01 | ||
| A new species of Disholcaspis Dalla Torre and Kieffer oak gallwasp from Costa Rica (Hymenoptera: Cynipidae: Cynipini). | 2011-04-01 |
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| A new genus of oak gallwasp, Coffeikokkos Pujade-Villar & Melika, gen. n., with a description of a new species from Costa Rica (Hymenoptera, Cynipidae). | 2012-04-01 |
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