The foraging behavior of the Large-headed Flatbill, Ramphotrigon megacephalum and the Dusky-tailed Flatbill, Ramphotrigon fuscicauda (Aves: Tyrannidae) by Tomaz Nascimento de Melo, Edson Guilherme

“…The objective of this study was to investigate and describe the foraging behavior of the Large-headed Flatbill, Ramphotrigon megacephalum (Swainson, 1835) and the Dusky-tailed Flatbill, Ramphotrigon fuscicauda Chapman, 1925, which occur sympatrically in the region and are considered bamboo specialists. …”
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Three Species of Ectoparasite Mites (Acari: Pterygosomatidae) Infested Geckos in Indonesia by TARUNI SRI PRAWASTI, ACHMAD FARAJALLAH, RIKA RAFFIUDIN

“…Based on our result, the three mites species were spread randomly and live sympatrically. The G. bataviensis mite showed the widest distribution, because it was found in almost all gecko collection sites, hence the most cosmopolitan mites. …”
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Tsidy, Repahaka sy Fotsife: 15 years research on nocturnal lemurs in the Ankarafantsika National Park, Madagascar by Marine Joly

“…They characterised aspects of the morphometry, genetics, communication, ecology, social traits and recently, cognitive abilities of sympatrically living mouse-sized (Microcebus murinus and M. ravelobensis) and cat-sized lemur species (Lepilemur edwardsi and Avahi occidentalis). …”
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New species and records of Quedius rove beetles (Coleoptera, Staphylinidae, Staphylininae) from Middle Asia by Maria Salnitska, Alexey Solodovnikov

“…(Distichalius) sp. aff. gissaricus, known from a single male found sympatrically with Q. (D.) gissaricus sp. nov., remains undescribed because of the possibility of teratology. …”
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Phylogenetic relationships in Pterodroma petrels are obscured by recent secondary contact and hybridization. by Ruth M Brown, William C Jordan, Chris G Faulkes, Carl G Jones, Leandro Bugoni, Vikash Tatayah, Ricardo L Palma, Richard A Nichols

“…P. heraldica and P. neglecta breed sympatrically in the Pacific Ocean, where P. arminjoniana is absent, but no record of hybridization between these two exists and they remain phenotypically distinct. …”
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Novel cooperative antipredator tactics of an ant specialized against a snake by Teppei Jono, Yosuke Kojima, Takafumi Mizuno

“…In Madagascar, a myrmicine ant, Aphaenogaster swammerdami, occurs sympatrically with a large blindsnake, Madatyphlops decorsei. …”
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The butterfly Danaus chrysippus (Lepidoptera: Nymphalidae) in Kenya is variably infected with respect to genotype and body size by a maternally transmitted male-killing endosymbion... by Herren, J, Gordon, I, Holland, P, Smith, D

“…In stark contrast to the extensive geographic range of their host, the Spiroplasma appears to be restricted to East Africa, where four African D. chrysippus subspecies exist sympatrically and form a hybrid zone. In this study, specimens collected at three sample sites within the hybrid zone were screened for Spiroplasma infection. …”

A New Species of the Deep-Sea Sponge-Associated Genus Eiconaxius (Crustacea: Decapoda: Axiidae), With New Insights Into the Distribution, Speciation, and Mitogenomic Phylogeny of A... by Qi Kou, Peng Xu, Gary C. B. Poore, Xinzheng Li, Xinzheng Li, Xinzheng Li, Xinzheng Li, Chunsheng Wang, Chunsheng Wang

“…Our analyses showed that differentiation of the new species occurs both allopatrically and sympatrically, probably resulting from the interaction of geographical isolation and deep water current movement, rather than from adaptation to different hosts. …”
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Challenge of monitoring cohesive movement in homing fish using fine-scale 3D positioning by J Takagi, K Ichikawa, N Arai, J Shoji, H Mitamura

“…Rockfish, which are well known for their site fidelity and homing ability, live sympatrically with many conspecifics. Conspecifics may be external drivers influencing rockfish movement, and rockfish may move cohesively while travelling. …”
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Genetic confirmation of a hybrid between two highly divergent cardinalid species: A rose‐breasted grosbeak (Pheucticus ludovicianus) and a scarlet tanager (Piranga olivacea) by David P. L. Toews, Tessa A. Rhinehart, Robert Mulvihill, Spencer Galen, Stephen M. Gosser, Tom Johnson, Jessie L. Williamson, Andrew W. Wood, Steven C. Latta

“…These two species occur sympatrically throughout much of eastern North America, although were not previously known to interbreed. …”
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Winter temperature correlates with mtDNA genetic structure of yellow-necked mouse population in NE Poland. by Sylwia D Czarnomska, Magdalena Niedziałkowska, Tomasz Borowik, Bogumiła Jędrzejewska

“…We found out that three European haplogroups occurred sympatrically in north-eastern Poland. Inferences based on mtDNA haplotype distribution and frequency defined five subpopulations. …”
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Spatial Isolation and Temporal Variation in Fitness and Condition Facilitate Divergence in a Migratory Divide. by Claudia Hermes, Raeann Mettler, Diego Santiago-Alarcon, Gernot Segelbacher, H Martin Schaefer

“…A novel migratory polymorphism evolved within the last 60 years in blackcaps (Sylvia atricapilla) breeding sympatrically in southwestern Germany. While most individuals winter in the traditional areas in the Mediterranean, a growing number of blackcaps started migrating to Britain instead. …”
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Lethal coalitionary attacks of chimpanzees (Pan troglodytes troglodytes) on gorillas (Gorilla gorilla gorilla) in the wild by Lara M. Southern, Tobias Deschner, Simone Pika

“…Here, we provide the first information of two lethal coalitionary attacks of chimpanzees (Pan troglodytes troglodytes) on another hominid species, western lowland gorillas (Gorilla gorilla gorilla), that occur sympatrically in the Loango National Park in Gabon. In both events, the chimpanzees significantly outnumbered the gorillas and victims were infant gorillas. …”
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Occurrence of hybrids and laboratory evidence of fertility among three species of the Phyllosoma complex (Hemiptera: Reduviidae) in Mexico by José Alejandro Martínez-Ibarra, Paz María Salazar-Schettino, Benjamín Nogueda-Torres, Mauro Omar Vences, José María Tapia-González, Bertha Espinoza-Gutiérrez

“…In seven studied communities of Western Mexico, triatomine specimens were sympatrically collected, some with atypical morphological characteristics in contrast to pure specimens, which were presumed to be hybrids. …”
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Morphological variations and sexual dimorphism in Chelonoidis carbonaria (Spix, 1824) and Chelonoidis denticulata (Linnaeus, 1766) (Testudinidae) by MS Barros, LC Resende, AG Silva, PD Ferreira Junior

“…Although they occur sympatrically in different areas, C. carbonaria prefers open areas, while C. denticulata chooses forest areas. …”
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Karyotype reinvestigation does not confirm the presence of two cryptic species and interspecific hybridization in the Polyommatus (Agrodiaetus) damocles complex in the Crimea (Lepi... by Vladimir A. Lukhtanov, Konstantin A. Efetov, Alexander V. Dantchenko

“…(A.) damocles krymaeus, occur sympatrically in the Crimea and (2) there is hybridization between these taxa on the Angarskiy Pass. …”
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The coexistence of hermaphroditic and dioecious plants is associated with polyploidy and gender dimorphism in Dasiphora fruticosa by Lin-Lin Wang, Zhi-Qiang Zhang, Yong-Ping Yang, Yuan-Wen Duan

“…Dasiphora fruticosa comprises male, female and hermaphrodite plants, which are distributed sympatrically in some populations on the Qinghai-Tibet Plateau. …”
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DNA probes for distinguishing Psychodopygus wellcomei from Psychodopygus complexus (Diptera: Psychodidae) by P. D. Ready, R. Lainson, J. J. Shaw, A. A. Souza

“…These two members of the Ps. squamiventris series are found sympatrically in foci of cutaneous leishmaniasis in the hill forests of southern Pará State. …”
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Distribution pattern and phylogeography of tree rats Chiromyscus (Rodentia, Muridae) in eastern Indochina by Alexander E. Balakirev, Alexei V. Abramov, Viatcheslav V. Rozhnov

“…The Northern and Southern phylogroups of C. thomasi appear to be distributed sympatrically with northern phylogroups of C. langbianis in most parts of eastern Indochina. …”
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Phylogeny and evolution of Müllerian mimicry in aposematic Dilophotes: evidence for advergence and size-constraints in evolution of mimetic sexual dimorphism by Michal Motyka, Lucie Kampova, Ladislav Bocak

“…Although mimetic sexual dimorphism has frequently evolved in Dilophotes, a single pattern has been maintained by both sexes in multiple closely related, sympatrically occurring species. Some patterns may be suboptimal because they are rare, crudely resemble co-mimics, or are newly evolved, but they persist in Müllerian communities for a long time. …”
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