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146 results for “chafers”
FIGURES 1–12 in A new species and new records of Sericini chafers from the Lower Gangetic Plains in India (Coleoptera: Scarabaeidae: Sericinae )
FIGURES 1–12. (1–4). Maladera kolkataensis Bhunia, Gupta, Sarkar & Ahrens, new species (holotype); (5–8). Gynaecoserica perdita Ahrens, 2004 (Kurseong, West Bengal); (9–12). Maladera affinis (Blanchard, 1850) (Purnea, Bihar); (1, 5, 8) Aedeagus in lateral view (left); (2,6, 10) Aedeagus in dorsal view; (3, 7, 11) Aedeagus in lateral view (right); (4, 8, 12) Habitus, dorsal view. Scale 0.5 mm. Habitus not to scale.
Data from: Allometry of wing twist and camber in a flower chafer during free flight: how do wing deformations scale with body size?
Intraspecific variation in adult body mass can be particularly high in some insect species, mandating adjustment of the wing's structural properties to support the weight of the larger body mass in air. Insect wings elastically deform during flapping, dynamically changing the twist and camber of the relatively thin and flat aerofoil. We examined how wing deformations during free flight scale with body mass within a species of rose chafers (Coleoptera: Protaetia cuprea) in which individuals varied more than threefold in body mass (0.38–1.29 g). Beetles taking off voluntarily were filmed using three high-speed cameras and the instantaneous deformation of their wings during the flapping cycle was analysed. Flapping frequency decreased in larger beetles but, otherwise, flapping kinematics remained similar in both small and large beetles. Deflection of the wing chord-wise varied along the span, with average deflections at the proximal trailing edge higher by 0.2 and 0.197 wing lengths compared to the distal trailing edge in the downstroke and the upstroke, respectively. These deflections scaled with wing chord to the power of 1.0, implying a constant twist and camber despite the variations in wing and body size. This suggests that the allometric growth in wing size includes adjustment of the flexural stiffness of the wing structure to preserve wing twist and camber during flapping.
Bayesian species delimitation in Pleophylla chafers (Coleoptera) – the importance of prior choice and morphology
<p>Input files for the analyses associated with the following study publish in BMC Evolutionary Biology: </p> <p> </p> <p><em>Bayesian species delimitation in Pleophylla chafers (Coleoptera) – the importance of prior choice and morphology</em></p> <p><strong>Background</strong></p> <p>Defining species units can be challenging, especially during the earliest stages of speciation, when phylogenetic inference and delimitation methods may be compromised by incomplete lineage sorting (ILS) or secondary gene flow. Integrative approaches to taxonomy, which combine molecular and morphological evidence, have the potential to be valuable in such cases. In this study we investigated the South African scarab beetle genus <em>Pleophylla</em> using data collected from 110 individuals of eight putative morphospecies. The dataset included four molecular markers (<em>cox1</em>, 16S, <em>rrnL</em>, ITS1) and morphometric data based on male genital morphology. We applied a suite of molecular and morphological approaches to species delimitation, and implemented a novel Bayesian approach in the software iBPP, which enables continuous morphological trait and molecular data to be combined.</p> <p><strong>Results</strong></p> <p>Traditional morphology-based species assignments were supported quantitatively by morphometric analyses of the male genitalia (eigenshape analysis, CVA, LDA). While the ITS1-based delineation was also broadly congruent with the morphospecies, the <em>cox1</em> data resulted in over-splitting (GMYC modelling, haplotype networks, PTP, ABGD). In the most extreme case morphospecies shared identical haplotypes, which may be attributable to ILS based on statistical tests performed using the software JML. We found the strongest support for putative morphospecies based on phylogenetic evidence using the combined approach implemented in iBPP. However, support for putative species was sensitive to the use of alternative guide trees and alternative combinations of priors on the population size (<em>θ</em>) and rootage (<em>τ</em><sub><em>0</em></sub>) parameters, especially when the analysis was based on molecular or morphological data alone.</p> <p><strong>Conclusions</strong></p> <p>We demonstrate that continuous morphological trait data can be extremely valuable in assessing competing hypotheses to species delimitation. In particular, we show that the inclusion of morphological data in an integrative Bayesian framework can improve the resolution of inferred species units. However, we also demonstrate that this approach is extremely sensitive to guide tree and prior parameter choice. These parameters should be chosen with caution – if possible – based on independent empirical evidence, or careful sensitivity analyses should be performed to assess the robustness of results. Young species provide exemplars for investigating the mechanisms of speciation and for assessing the performance of tools used to delimit species on the basis of molecular and/or morphological evidence.</p>
FIGURE 1 in The rose chafers (Coleoptera: Scarabaeidae: Cetoniinae) of Guinea-Bissau: an annotated checklist and new records
FIGURE 1. Guinea-Bissau and its Administrative Regions. Map modified from Nations Online Project.
Figures 7-8 from: Seidel M, Jameson ML, Stone RL (2017) A new cryptic species and review of the east-Andean leaf chafer genus Mesomerodon Ohaus, 1905 (Coleoptera, Scarabaeidae, Rutelinae). ZooKeys 671: 61-85. https://doi.org/10.3897/zookeys.671.11815
Figures 7-8 - Live specimens showing cream coloration of Mesomerodon species. 7 M. spinipenne from Manú National Park, Madre de Dios, Peru [image courtesy of Rich C. Hoyer] 8 M. barclayi sp. n. from Payamino Research Station, Orellana, Ecuador [image courtesy of Conrad Gillett].
Figures 25-27 from: Seidel M, Jameson ML, Stone RL (2017) A new cryptic species and review of the east-Andean leaf chafer genus Mesomerodon Ohaus, 1905 (Coleoptera, Scarabaeidae, Rutelinae). ZooKeys 671: 61-85. https://doi.org/10.3897/zookeys.671.11815
Figures 25-27 - Form of protarsomeres 2 to 4, ventral view, in Mesomerodon species. 25 M. barclayi sp. n., showing protarsomere 2 without stiate region at apex 26 M. gilletti showing protarsomere 2 without striate region at apex 27 M. spinipenne showing protarsomere 2 with striate region apically.
Figure 18 from: Seidel M, Jameson ML, Stone RL (2017) A new cryptic species and review of the east-Andean leaf chafer genus Mesomerodon Ohaus, 1905 (Coleoptera, Scarabaeidae, Rutelinae). ZooKeys 671: 61-85. https://doi.org/10.3897/zookeys.671.11815
Figure 18 - Distribution of Mesomerodon species in South America. Refer to Suppl. material 1 for associated data.
Figures 1-6 from: Seidel M, Jameson ML, Stone RL (2017) A new cryptic species and review of the east-Andean leaf chafer genus Mesomerodon Ohaus, 1905 (Coleoptera, Scarabaeidae, Rutelinae). ZooKeys 671: 61-85. https://doi.org/10.3897/zookeys.671.11815
Figures 1-6 - Dorsal and lateral habitus of Mesomerodon species. 1–3 M. barclayi sp. n., male holotype, dorsal, ventral, and lateral view 4–5 M. gilletti Soula holotype male specimen and female allotype specimen 6 M. spinipenne Ohaus male non-type specimen
Figure 19-21 from: Seidel M, Jameson ML, Stone RL (2017) A new cryptic species and review of the east-Andean leaf chafer genus Mesomerodon Ohaus, 1905 (Coleoptera, Scarabaeidae, Rutelinae). ZooKeys 671: 61-85. https://doi.org/10.3897/zookeys.671.11815
Figure 19-21 - Distributional model for Mesomerodon species in South America. 19 all Mesomerodon species 20 M. barclayi sp. n., M. gilletti and unassociated females 21 M. spinipenne. Refer to Appendix 1 for associated data
Figures 22-24 from: Seidel M, Jameson ML, Stone RL (2017) A new cryptic species and review of the east-Andean leaf chafer genus Mesomerodon Ohaus, 1905 (Coleoptera, Scarabaeidae, Rutelinae). ZooKeys 671: 61-85. https://doi.org/10.3897/zookeys.671.11815
Figures 22-24 - Form of the male genitalia (dorsal [a], lateral [b], ventral [c] views) in Mesomerodon species. 22 M. barclayi sp. n. 23 M. gilletti 24 M. spinipenne
Figures 9-17 from: Seidel M, Jameson ML, Stone RL (2017) A new cryptic species and review of the east-Andean leaf chafer genus Mesomerodon Ohaus, 1905 (Coleoptera, Scarabaeidae, Rutelinae). ZooKeys 671: 61-85. https://doi.org/10.3897/zookeys.671.11815
Figures 9-17 - Generic characters for Mesomerodon. 9 Left mandible of M. gilletti, dorsal view (broadly rounded externally with 2 interior, acute teeth; molar region broad) 10 Maxilla of M. gilletti, ventral view (with 6 teeth; galea not fused) 11 Labrum, dorsal view, of M. gilletti (apex emarginate medially) 12 Mentum, ventral view, of M. gilletti (subrectangular in shape, broadest at middle, apex emarginated) 13 Spiculum gastrale of M. gilletti 14 Wing of M. spinipenne showing venation and inset showing dense, thick setae associated with ScA and setose region anterior to RA3+4 15 Protarsomere 5 of M. barclayi sp. n., male, showing well defined, ventromedial emargination 16 Mesofemur of M. gilletti male, ventral view, showing acute process projecting posteriorly on posterior margin 17 Elytral apex of M. gilletti, lateral view, showing spiniform callus
Data from: Allometry of wing twist and camber in a flower chafer during free flight: how do wing deformations scale with body size?
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Figure 1 in Biology and management of the masked chafer Cyclocephala disticcta Burmeister &Melolonthidae, Dynastinae, Cyclocephalini)
Figure 1. Male Cyclocephala disticcta exhibiting thanatosis behavior. Adult mean size: 10 mm.
FIGURE 5 in The rose chafers (Coleoptera: Scarabaeidae: Cetoniinae) of Angola: a descriptive checklist with new records and synonymic notes
FIGURE 5. Cetoniinae species of Angola. a, Pachnoda orphanula nachtigali (dorsal view), male, MZUC; b, Pachnoda picturata (dorsal view), female, MZUC; c, Pachnoda poggei, parameres (frontal view), Dundo, LNO, IICT; d and e, Pachnoda rubriventris rubrocinctoides, male (dorsal view) and parameres (lateral view), respectively, Carima, MAL, ASC; f and g, Pachnoda rubrocincta (dorsal views), male and female, respectively, MZUC; h and i, Pachnoda rufovirens, male (dorsal view) and parameres (frontal view), respectively, Kakande, BIE, ASC.
FIGURE 1. a in The rose chafers (Coleoptera: Scarabaeidae: Cetoniinae) of Angola: a descriptive checklist with new records and synonymic notes
FIGURE 1. a, butterfly trap baited with banana and pineapple, Satschijamba, BIE; b, yellow chromotropic trap baited with banana, Satschijamba, BIE; c, light trapping, Satschijamba, BIE; d, rotten logs (direct observation), Somakwanza, BIE; e, secondary open forest, Satschijamba, BIE; f, secondary moist forest, Calulo, CUS.
FIGURE 2 in The rose chafers (Coleoptera: Scarabaeidae: Cetoniinae) of Angola: a descriptive checklist with new records and synonymic notes
FIGURE 2. Cetoniinae species of Angola. a, Anelaphinis dominula (dorsal view), MZUC; b and c, Atrichelaphinis (Atrichelaphinis) nigropunctulata (dorsal and ventral views, respectively), female, MZUC; d, Dischista cincta cincta (dorsal view), Humbe, CNN, MZUC; e–g, Dischista lizleri, female (dorsal view), head and pronotum (dorsal view) and female (ventral view), respectively, Humbe, CNN, MZUC; h, Dischista rufa (dorsal view), and associated labels, MZUC; i, Dolichosthetus angolensis (dorsal view), male, Mussulo, LUA, ASC.
FIGURE 164 in Three new synonyms within the flower chafer genus Goliathopsis Janson, 1881 (Coleoptera: Scarabaeidae: Cetoniinae) from China
FIGURE 164. Known distribution of Goliathopsis Janson, 1881 species. Syncretic markers indicate identical or very close localities; type localities of the known species are marked, that of G. despectus (Westwood, 1873), G. cervus Janson, 1881, and G. esquiroli Pouillaude, 1913 are missing because the precise type localities are unknown.
FIGURES 73–76 in Three new synonyms within the flower chafer genus Goliathopsis Janson, 1881 (Coleoptera: Scarabaeidae: Cetoniinae) from China
FIGURES 73–76. Habitus of Goliathopsis ferreroi Antoine, 1991 (dorsal and ventral view). 73–74, male; 75–76, female.
FIGURES 62–65 in Three new synonyms within the flower chafer genus Goliathopsis Janson, 1881 (Coleoptera: Scarabaeidae: Cetoniinae) from China
FIGURES 62–65. Habitus of Goliathopsis esquiroli Pouillaude, 1913 (dorsal and ventral view). 62–63, male; 64–65, female.
FIGURES 58–61 in Three new synonyms within the flower chafer genus Goliathopsis Janson, 1881 (Coleoptera: Scarabaeidae: Cetoniinae) from China
FIGURES 58–61. Habitus of Goliathopsis duponti Antoine, 1991 (dorsal and ventral view). 58–59, male; 60–61, female.
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OpenNeuro
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