@article {529,
	title = {Hierarchical analysis of variation in the mitochondrial 16S rRNA gene among Hymenoptera.},
	journal = {Molecular biology and evolution},
	volume = {15},
	year = {1998},
	pages = {1728-1743},
	abstract = {Nucleotide sequences from a 434-bp region of the 16S rRNA gene were analyzed for 65 taxa of Hymenoptera (ants, bees, wasps, parasitoid wasps, sawflies) to examine the patterns of variation within the gene fragment and the taxonomic levels for which it shows maximum utility in phylogeny estimation. A hierarchical approach was adopted in the study through comparison of levels of sequence variation among taxa at different taxonomic levels. As previously reported for many holometabolous insects, the 16S data reported here for Hymenoptera are highly AT-rich and exhibit strong site-to-site variation in substitution rate. More precise estimates of the shape parameter (alpha) of the gamma distribution and the proportion of invariant sites were obtained in this study by employing a reference phylogeny and utilizing maximum-likelihood estimation. The effectiveness of this approach to recovering expected phylogenies of selected hymenopteran taxa has been tested against the use of maximum parsimony. This study finds that the 16S gene is most informative for phylogenetic analysis at two different levels: among closely related species or populations, and among tribes, subfamilies, and families. Maximization of the phylogenetic signal extracted from the 16S gene at higher taxonomic levels may require consideration of the base composition bias and the site-to-site rate variation in a maximum-likelihood framework.},
	keywords = {16S, 16S: genetics, Animals, Base Sequence, DNA, evolution, Genetic Variation, Hymenoptera, Hymenoptera: classification, Hymenoptera: genetics, Mitochondrial, Mitochondrial: chemistry, Mitochondrial: genetics, Molecular, Molecular Sequence Data, Nucleic Acid Conformation, phylogeny, Ribosomal, Ribosomal: chemistry, Ribosomal: genetics, RNA, Wasps, Wasps: classification, Wasps: genetics},
	author = {Whitfield, J.B. and Cameron, S.A.}
}
@article {446,
	title = {Stable structural color patterns displayed on transparent insect wings.},
	journal = {Proceedings of the National Academy of Sciences of the United States of America},
	volume = {108},
	year = {2011},
	pages = {668-673},
	abstract = {Color patterns play central roles in the behavior of insects, and are important traits for taxonomic studies. Here we report striking and stable structural color patterns--wing interference patterns (WIPs)--in the transparent wings of small Hymenoptera and Diptera, patterns that have been largely overlooked by biologists. These extremely thin wings reflect vivid color patterns caused by thin film interference. The visibility of these patterns is affected by the way the insects display their wings against various backgrounds with different light properties. The specific color sequence displayed lacks pure red and matches the color vision of most insects, strongly suggesting that the biological significance of WIPs lies in visual signaling. Taxon-specific color patterns are formed by uneven membrane thickness, pigmentation, venation, and hair placement. The optically refracted pattern is also stabilized by microstructures of the wing such as membrane corrugations and spherical cell structures that reinforce the pattern and make it essentially noniridescent over a large range of light incidences. WIPs can be applied to map the micromorphology of wings through direct observation and are useful in several fields of biology. We demonstrate their usefulness as identification patterns to solve cases of cryptic species complexes in tiny parasitic wasps, and indicate their potentials for research on the genetic control of wing development through direct links between the transregulatory wing landscape and interference patterns we observe in Drosophila model species. Some species display sexually dimorphic WIPs, suggesting sexual selection as one of the driving forces for their evolution.},
	keywords = {Animal, Animals, biodiversity, Body Patterning, Drosophila, Drosophila: physiology, Electron, Female, Genetic Variation, insects, Male, Microscopy, Pigmentation, Scanning, Sex Factors, Sexual Behavior, Species Specificity, Wing, Wing: metabolism, Wing: physiology},
	author = {Shevtsova, Ekaterina and Hansson, Christer and Janzen, D.H. and Kj{\ae}randsen, Jostein}
}
@article {178,
	title = {Cryptic species as a window on diversity and conservation.},
	journal = {Trends in ecology \& evolution},
	volume = {22},
	year = {2007},
	pages = {148-55},
	abstract = {The taxonomic challenge posed by cryptic species (two or more distinct species classified as a single species) has been recognized for nearly 300 years, but the advent of relatively inexpensive and rapid DNA sequencing has given biologists a new tool for detecting and differentiating morphologically similar species. Here, we synthesize the literature on cryptic and sibling species and discuss trends in their discovery. However, a lack of systematic studies leaves many questions open, such as whether cryptic species are more common in particular habitats, latitudes or taxonomic groups. The discovery of cryptic species is likely to be non-random with regard to taxon and biome and, hence, could have profound implications for evolutionary theory, biogeography and conservation planning.},
	keywords = {Adaptation, Biological, Adaptation, Biological: genetics, Animals, biodiversity, Biological Evolution, Conservation of Natural Resources, Ecology, Ecosystem, Genetic Variation, Geography, phylogeny, RNA Splice Sites, Sequence Analysis, DNA, Species Specificity},
	author = {Bickford, David and Lohman, David J and Sodhi, Navjot S and Ng, P.K.L. and Meier, Rudolf and Winker, Kevin and Ingram, Krista K and Das, Indraneil}
}
