Notes on the Neotropical species of Synergus(Hymenoptera, Cynipidae), with description of anew species from Colombia

摘要

Notes are given on the five species of Synergus Hartig, 1840 recorded from Central and South America, including a key for their identification. A new species, S. colombianus sp. nov., is described from Colombia. The new species is an inquiline of an unidentified cynipid gall on Quercus humboldtii Bonpl. Fagaceae. Synergus colombianus is the first Synergus species recorded from Colombia and the most southerly record of this genus in the Neotropical region. The new species is closely related to S. cultratus Ritchie et Shorthouse, 1987, S. filicornis Cameron, 1883, and S. nicaraguensis Diaz et Gallardo, 1998, but differs from these species in characters that are discussed in the text.