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A collection of Coleoptera Tenebrionidae from Central America has been studied and new species described and figured. The interest of this material principally consist in the method of sampling in the canopy and in the fact that for the first time the plant in which each specimen has been found was noted. Some systematic changes in the current classification of some genera, after Doyen and Tschinkel (1982) and Doyen et al. (1989) are introduced as results of morphological comparative study. Rhypasma Pascoe, 1871 is transferred to the tribe Stenosini from the Belopini. A total of 16 new species and one new genus from Panama are described and figured. Phymatestes agnei sp. nov., Rhypasma livae sp. nov., Lenkous ibisca sp. nov., Iccius monoceros sp. nov., Othryoneus triplehorni sp. nov., Paniasis kulzeri sp. nov., Gonospa similis sp. nov., Apsida simulatrix sp. nov., Brosimapsida gonospoides gen. and sp. nov., Epicalla elongata sp. nov., E. pygmaea sp. nov., E. aeneipes sp. nov., Strongylium vikenae sp. nov., Otocerus delicatus sp. nov. and O. angelicae sp. nov. The genus Paniasis Champion, 1886 is found to be identical to Pseudapsida Kulzer, 1961, created by monotypy for a species from Brazil: Paniasis brasiliensis (Kulzer, 1961) comb. nov. The systematic position of the genera Paratenetus Spinola, 1844, Rhypasma Pascoe, 1871, Calydonella Doyen, 1995, Othryoneus Champion, 1886, and Otocerus Mäklin, 1884 is commented.
Mathevotaenia panamaensis sp. nov. (Cestoda, Anoplocephalidae, Linstowiinae) from a green spiny lizard, Sceloporus malachiticus, collected in Panama is described. This is the first species of Mathevotaenia reported from a lizard host. The new species is most similar to Mathevotaenia bivittata in that mature eggs are concentrated along the lateral margins of the proglottids. Major differences between the two species include oval cirrus sac in M. bivittata, a spherical cirrus sac in M. panamaensis; ovary compact consisting of 10–15 short lobules in M. bivittata, ovary bilobed with each lobe consisting of 3–4 lobules in M. panamaensis.
To assess the influence of habitat fragmentation on small bats, we determined home range size and mobility of the frugivorousArtibeus watsoni Thomas, 1901 and the gleaning insectivorousMicronycteris microtis Miller, 1898 by radiotracking on different-sized islands (2.7–17 ha) in Lake Gatún, Panamá. The two species differed in their response to fragmentation. Home range size was highly variable in the five trackedA. watsoni, ranging from 1.8 to 17.9 ha with a mean of about 9 ha. Some individuals flew regularly between islands and/or the mainland, thereby traversing up to 180 m of open water. In comparison, home ranges of threeM. microtis were with about 3.8 ha only half as large. All ofM. microtis exhibited sedentary foraging behaviour and did not cross open water, suggesting that they might persist at least on some of the islands as resident populations. Our findings are consistent with radiotracking data from a previous study and indicate that small habitat patches are still used by small bats, provided the degree of isolation is low and that sufficient resources and larger habitat patches exist in close vicinity, potentially acting as additional feeding grounds and source populations.
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