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317 results for “Lesser Antilles”
Figure 1 in The beetles of Martinique, Lesser Antilles (Insecta: Coleoptera); diversity and distributions
Figure 1. The islands of the central and eastern West Indies and adjacent continental land masses, showing in the east the main island arc of the Lesser Antilles and the relative position of Martinique in that island chain.
Figure 2 in Spiders (Arachnida: Araneae) of Saba Island, Lesser Antilles: Unusually high species richness indicates the Caribbean Biodiversity Hotspot is woefully undersampled
Figure 2. Spider species richness by island area showing dramatic undersampling of most islands and lack of expected positive species-area relationship. Islands are ordered by size from smaller to larger as follows: Saba, Nevis, St. Kitts, Antigua, Grenada, Turks and Caicos, Barbados. See text for data sources.
Figure 1 in Spiders (Arachnida: Araneae) of Saba Island, Lesser Antilles: Unusually high species richness indicates the Caribbean Biodiversity Hotspot is woefully undersampled
Figure 1. Saba Island (17o38'N, 63o14'W), Lesser Antilles. Thirty-three collection sites mapped using Google Earth. Numbers correspond to sites listed in Table 1.
Figure 1 in The diversity and distributions of the beetles (Insecta: Coleoptera) of the northern Leeward Islands, Lesser Antilles (Anguilla, Antigua, Barbuda, Nevis, Saba, St. Barthélemy, St. Eustatius, St. Kitts, and St. Martin-St. Maarten
Figure 1. The islands of the central and eastern West Indies and adjacent continental land masses, showing in the east the main island arc of the Lesser Antilles.
Figrue 2 in The diversity and distributions of the beetles (Insecta: Coleoptera) of the Guadeloupe Archipelago (Grande-Terre, Basse-Terre, La Désirade, Marie-Galante, Les Saintes, and Petite-Terre), Lesser Antilles
Figrue 2. Outline map of physical relationships of the individual islands of the Guadeloupe Archipelago. Note the -200 isobath lines indicating the extent of the Guadeloupe Bank. This approximately shows the maximum of the increased areas of the islands during Pleistocene glacials, when sea levels were lower than at present, and only three separate islands ("Grand Guadeloupe," and Les Saintes, and Marie-Galante) existed (Clark et al. 2009).
Figure 1 in The diversity and distributions of the beetles (Insecta: Coleoptera) of the Guadeloupe Archipelago (Grande-Terre, Basse-Terre, La Désirade, Marie-Galante, Les Saintes, and Petite-Terre), Lesser Antilles
Figure 1. The islands of the central and eastern West Indies and adjacent continental land masses, showing in the east the main island arc of the Lesser Antilles and the location of the Guadeloupe Archipelago.
Figure 4 in The beetles of the Lesser Antilles (Insecta, Coleoptera): diversity and distributions
Figure 4. General fluctuation of relative sea levels (RSL) in the later part of the Pleistocene, derived from Waelbroeck et al. (2002) and Shackleton (2000) by Lascu (2005). This shows how varying were the sea levels (and thus island shorelines and island areas) through the last quarter of the Pleistocene. The result is that at times of lower sea levels during global glacials the islands of the Lesser Antilles had more exposed land and were closer to each other and overwater dispersal between islands was facilitated. Additionally, over this time span the higher islands of the southern islands were increasing in area and elevation through volcanic activity.
Figure 5 in The beetles of the Lesser Antilles (Insecta, Coleoptera): diversity and distributions
Figure 5. The larger and sometimes connected paleo-islands of the eastern West Indies at times of maximum low sea levels during the last glacial, about 26,000 to 20,000 yBP. Some of the present islands of the Lesser Antilles thus had considerably larger areas and were joined with other islands on their marine bank as continuous land, and the islands were closer to each other. The glacial low sea levels approximated the insular shelf margins. The isobath (depth) line is shown here at -200 m below the present sea level. The evidence for sea level depression in the last glacial is for a decrease of as much as -150 m (Clark et al. 2009). The larger island areas are the exposed submarine banks that represent the true biogeographic islands that were isolated from each other. Note that some of the islands paralleling the north coast of South America were still isolated by seawater and were thus oceanic islands, even though they lie on or near the continental shelf of South America.
Figure 1 in The beetles of the Lesser Antilles (Insecta, Coleoptera): diversity and distributions
Figure 1. The islands of the West Indies and adjacent continental land masses, showing in the east the main north-south island arc of the Lesser Antilles.
Figure 3 in The beetles of the Lesser Antilles (Insecta, Coleoptera): diversity and distributions
Figure 3. Detailed map of the smaller and northern islands of the Leeward Islands, at the northern end of the Lesser Antilles.
Figure 2 in The beetles of the Lesser Antilles (Insecta, Coleoptera): diversity and distributions
Figure 2. Areconstruction of a possible configuration of land in the Eocene-early Oligocene, 35-33 myBP. The eastward moving West Indies seafloor plate overrides the westward moving American plate that descends into a trench east of the Lesser Antilles. The subducted rocks are the source of the volcanic eruptions that have formed the present islands of the Lesser Antilles. The indicated emergent land is hypothetical and no clear evidence exists to indicate that beetles existed on this land and persisted to the present. The outlines show the present Lesser Antilles, but they did not exist at the time shown for the reconstruction. Modified from Iturralde-Vinent and MacPhee (2006) and Genaro (2008).
Figure 6 in The beetles of the Lesser Antilles (Insecta, Coleoptera): diversity and distributions
Figure 6. Darlington (1957) proposed, as a "rule of thumb", that there exists, within a given region of relatively uniform climate, an orderly relation between the size of a sample area and the number of species found in that area, that there is a doubling of species numbers with each 10 times increase in island area. This was generalized as: (S = CAz) where C = 170. 5 andz = 0. 301 (MacArthur & Wilson, 1967) whichis shown as the regression line. Montserrat is the key reference datum point for anchoring this species-area regression line (Ivie et al, 2008a). This represents the hypothetical saturation number of species that might be expected to occur on an island of a designated area. Data points are for present day islands and island areas. The position of the data points for all the islands other than Montserrat fall under this line, which shows that more species would be expected on each island if it has the expected natural saturation number of species. The difference between the regression line and each data points suggests how many additional species might be expected with a complete knowledge of each island's fauna. These "undiscovered species" numbers are given in Table 2.
Figure 2 in The beetles of the island of St. Vincent, Lesser Antilles (Insecta: Coleoptera); diversity and distributions
Figure 2. Outline map of St. Vincent showing the main mountain ridges and valley drainages. Adapted from Harrison and Rankin (1976).
Figure 1 in The beetles of the island of St. Vincent, Lesser Antilles (Insecta: Coleoptera); diversity and distributions
Figure 1. The islands of the central and eastern West Indies and adjacent continental land masses, showing in the east the main island arc of the Lesser Antilles and the location of St. Vincent.
Figure 27-32. Pronotal detail, Lathropus spp. 27 in A review of Lathropus Erichson (Coleoptera: Laemophloeidae) in Florida and the West Indies, excluding the Lesser Antilles
Figure 27-32. Pronotal detail, Lathropus spp. 27) L. parvulus Grouvelle (Panama). 28) L. robustulus Casey. 29) L. vernalis Casey. 30) L. chickcharnie Thomas, n. sp. 31) L. rhabdophloeoides Thomas, n. sp. 32) L. jamaicensis Thomas, n. sp.
Figure 51-56. 51 in A review of Lathropus Erichson (Coleoptera: Laemophloeidae) in Florida and the West Indies, excluding the Lesser Antilles
Figure 51-56. 51) Lathropus chickcharnie Thomas, n. sp., elytral cell. 52) N. gen, n. sp., elytral cell. 53) Lathropus jamaicensis Thomas, n. sp., antennal club. 54) N. gen, n. sp., antennal club. 55) Rhabdophloeus sp., Brazil, pronotum. 56) Rhabdophloeus sp., Brazil, antennal club.
Figure 47-50. Lathropus rhabdophloeoides Thomas, n in A review of Lathropus Erichson (Coleoptera: Laemophloeidae) in Florida and the West Indies, excluding the Lesser Antilles
Figure 47-50. Lathropus rhabdophloeoides Thomas, n. sp., mouthparts. 47) Labrum. 48) Maxilla. 49) Labium. 50) Mandible.
Figure 5-8. Habitus, Lathropus spp. 5 in A review of Lathropus Erichson (Coleoptera: Laemophloeidae) in Florida and the West Indies, excluding the Lesser Antilles
Figure 5-8. Habitus, Lathropus spp. 5) L. parvulus Crouvelle (Panama). 6) L.parvulus Grouvelle (Cayman Islands). 7) L. jamaicensis Thomas, n. sp. 8) L. rhabdophloeoides Thomas, n. sp.
Figure 9-12. Habitus, Lathropus spp. 9 in A review of Lathropus Erichson (Coleoptera: Laemophloeidae) in Florida and the West Indies, excluding the Lesser Antilles
Figure 9-12. Habitus, Lathropus spp. 9) L. pictus Schwarz. 10) L. chickcharnie Thomas, n. sp. 11) L. robustulus Casey. 12) L. vernalis Casey.
Figure 57-61. 57 in A review of Lathropus Erichson (Coleoptera: Laemophloeidae) in Florida and the West Indies, excluding the Lesser Antilles
Figure 57-61. 57) Carinophloeus raffrayi (Grouvelle), elytral cell. 58) C. raffrayi (Grouvelle), antennal club. 59) N. gen, n. sp., pronotal detail. 60) Lathropus rhabdophloeoides Thomas, n. sp., procoxal cavity. 61) Lathropus rhabdophloeoides Thomas, n. sp., mesocoxa and surrounding sclerites. 62) Lathropus chickcharnie Thomas, n. sp., bifurcate setae of head.
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