Two Remarkable New Species of Plusiotis (Coleoptera: Scarabaeidae: Rutelinae) from Mexico and Central America
نویسندگان
چکیده
Affinities, diagnoses, and descriptions are provided for two new species of Plusiotis: P. spectabilis from an unknown locality in Central America and P. dianae from Veracruz state in Mexico. Plusiotis spectabilis is described from a single female and is the largest species in the genus (41 mm in length). THAT GLPITERS IS NOT GOLD. Common Proverb l ntroduction The recent treatment of the genus Plusiotis by Mokn (1990) provided a much needed and beautifully illustrated synopsis of the genus. It has also enabled questionable species to be determined with a fair amount of reliability and to assess whether species have been described previously. There will, no doubt, be a brief rush now to describe new species (e.g., Warner et al. 1992) in this popular group that are not found in Mokn's book. Mokn is now working on a scientific revision of the genus that will provide a key and phylogeny (Monjn, personal communication, 1991), and we hope this influx of new species will add to the robustness of his studies. We describe here two new species of Plusiotis. One is distinctive because of its immense size and elytral sculpturing, and the other is characterized by unique genitalia while appearing externally similar to other known species. As with many other species in the genus, these two new species appear to be extremely localized in distribution. One, in fact, already may be extinct, while a t least one population of the other occupies a forest remnant so small as to cause grave concern over i ts future survival. The new species are easily distinguished because of unique character states. They are not placed in a key because, surprisingly, one does not yet exist for the majority of the species.
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