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1 September 2001 Arboreal Beetles of Neotropical Forests: Agra Fabricius, Larval Descriptions with Notes on Natural History and Behaviour (Coleoptera, Carabidae, Lebiini, Agrina)
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Abstract

Using a mobile crane system covering a canopy area of about 1.4 ha in a rain forest in southern Venezuela, adults of several species of Agra Fabricius were observed and captured. Adults of 17 species were kept in the laboratory. Movements and foraging behaviour in the forest canopy and in the laboratory are reported. Larvae of four Agra species are described. Larvae of all four species are highly modified. Short antennae, multiple setae FR8/9, elongate head capsule with enlarged frontale, trochanter and femoral spines or spin-like tubercles, absence of a lacinia, markedly long, multisetose and multisegmented urogomphi, a pygopod with two groups of hooks, as well as bifid-toothed tarsal claws are larval apomorphies of Agra. The enlarged pulvillus is shared with larvae of other genera in Lebiini that are regarded as related to Agra based on adult characters. Amongst themselves studied larvae show a number of differences. The larva of the Agra cajennensis-group has small abdominal egg bursters on terga I–VIII that were previously known only from coleopteran suborder Polyphaga; these are not present in the other first instars studied. From larval attributes, it is hypothesized that Agra larvae live under bark and are predatory.

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Erik Arndt, Susan Kirmse, and Terry L. Erwin "Arboreal Beetles of Neotropical Forests: Agra Fabricius, Larval Descriptions with Notes on Natural History and Behaviour (Coleoptera, Carabidae, Lebiini, Agrina)," The Coleopterists Bulletin 55(3), (1 September 2001). https://doi.org/10.1649/0010-065X(2001)055[0297:ABONFA]2.0.CO;2
Received: 28 November 2000; Accepted: 1 May 2001; Published: 1 September 2001
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