Insecta Mundi
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557
Conognatha iris iris Olivier (Coleoptera: Buprestidae) is recorded for the fi rst time for Venezuela. The record is based on a single female specimen from Caicet hill, Amazonas state. A map of the known distribution of the taxon is provided
878
Nocturnal multi-species roosts of Cicindelidae (Coleoptera) in a Neotropical lowland rainforest
(2021)
Tiger beetles (Coleoptera: Cicindelidae) are frequent predators on the forest floor of the Amazon rainforest. We report on five diurnal sympatric tiger beetle species belonging to the genera Odontocheila Laporte de Castelnau and Poecilochila Rivalier in a terra firme rainforest in South Venezuela. We observed adult beetles for a full year and monitored their nocturnal roosts along two forest paths during the rainy season in 1998. We found up to four species communally roosting on low vegetation along the paths during the night. Multi-species roosts were more often observed than conspecific communal roosts. Although the individual composition of the nocturnal roosts changed frequently, distinct plants were used for several days to weeks. The most individual-rich roosts comprised 10 or 11 adult tiger beetles roosting on one leaf. Observed nocturnal roosts were dominated by O. angulipenis W. Horn and O. margineguttata (Dejean). Most mixed roosts included O. confusa (Dejean), O. angulipenis and O. margineguttata. Low abundances and size differences possibly facilitate the coexistence of these five tiger beetle species. The advantage of communal roosting during the rainy season is probably the reinforcement of their chemical defense.
493
Fifteen species of longhorn beetles (Coleoptera, Cerambycidae) are reported for the fi rst time for Venezuela:
Ambonus electus (Gaham, 1903), Eusapia guyanensis Huedepohl, 1988, Acyphoderes abdominalis (Olivier, 1795), Isthmiade ichneumoniformis Bates, 1870, Drychateres bilineatus (Olivier, 1795), Polyschisis rufi tarsalis Waterhouse, 1880, Carphina petulans (Kirsch, 1875), Lepturges zonula Monné, 1976, Oreodera albata Villiers, 1971, Psapharochrus chrysopus (Bates, 1861), Estola fratercula Galileo y Martins, 1999, Oncideres cephalotes Bates, 1865, Polyrhaphis spinosa (Drury, 1773), Nicias alurnoides (Thomson, 1857) and Ialyssus tuberculatus (Olivier, 1795). The known prior distributions for each species, collecting methods and additional information on the collection sites of each specimen are also provided.