In a paper published in Genetics today (https://www.genetics.org/content/215/4/1027) Entomology graduate student Katie Reding (Pick lab) used CRISPR/Cas9 to make a genomic deletion of the white gene in the milkweed bug Oncopeltus fasciatus. The white gene was one of the first genes identified in Drosophila, over 100 years ago, where it is necessary for the red eye color of flies. Interesting, in Oncopeltus, white is necessary for pigmentation throughout the body but it is also necessary for organismal survival, as animals homozygous for the white mutations do not survive to adulthood.  This is the first demonstration that CRISPR is effective in Oncopeltus. Methods Katie developed will be useful for researchers to test the function of other genes in this and related species. ​

Interested in seeing bess beetles, some of mother nature's champion recyclers, at work? Now is a great time, blogs Bug of the Week's Professor Raupp. Bess beetles can be spotted scurrying across the forest floor recycling wood of fallen trees.

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​http://bugoftheweek.com/blog/2020/6/15/recyclers-in-the-circle-of-life-bess-beetles-odontotaenius-disjunctus?fbclid=IwAR3nMOEDl6zPU85efeIeIHbY71LpzDztE39PkoYLgQ0kppdWpnXDRYZjhwc

Moths and butterflies play a vital role in pollinating plants on wild and manged lands. So how vital are they? Associate Professor and Extension Specialist, Cerruti Hooks, and Assistant Professor, Anahi Espindola pair up to respond. The two blog in Maryland Agronomy News about the efficiency of moths and butterflies as pollinators and advocate for the conservation of these important insects.

http://blog.umd.edu/agronomynews/2020/06/05/moths-butterflies-and-pollination/?fbclid=IwAR38RrfISP3NMTRxjMpvZcEtyzgb0eny3ToMotZNc4Fi1EwD-W0nCtQ2PY4

Trio from Pick Lab, Faculty Assistant Jessica Hernandez, Prof and Chair Leslie Pick and Grad Student Katie Reding, look into using a new study organism to discover novel genes and mechanisms. Their findings conclude that harlequin bugs are a versatile insect model, effective for examining gene expression. The Pick Lab takes us through their discovery, from rearing harlequin bugs in the lab to where they see molecular genetic analysis of harlequin bugs leading. Learn more in their latest paper out this month in EvoDevo "Oncopeltus-like gene expression patterns in Murgantia histrionica, a new hemipteran model system, suggest ancient regulatory network divergence."  
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https://evodevojournal.biomedcentral.com/articles/10.1186/s13227-020-00154-x

Grad Student Darsy Smith and Professor Bill Lamp have an article out in a special edition of University of Maryland Extension's Agronomy News entitled, "Unexpected Outbreak of Cowpea Aphid in Alfalfa." Although outbreaks have been observed in the past, they warn that this outbreak, discovered by Terry Patton (Dively Lab), is considerable in size and extent. Follow link to see their guidance on identifying, monitoring and reporting this crop damaging pest.
https://extension.umd.edu/…/a…/2020%20April_Pest%20Alert.pdf

Postdoc Alina Avanesyan and Professor Bill Lamp have another publication out on the invasive lanternfly. The paper entitled, "Use of Molecular Gut Content Analysis to Decipher the Range of Food Plants of the Invasive Spotted Lanternfly, Lycorma delicatula" was published in Insects special issue "Molecular Gut Content Analysis: Deciphering Trophic Interactions of Insects.” Their study is the first to show that host plant DNA can be identified within the gut contents of the spotted lanternfly. Molecular gut content analysis provides insight into the feeding behavior of lanternflies at all developmental stages and can be helpful in predicting host plant range. This research could improve the monitoring and management of this invasive species.

https://www.mdpi.com/2075-4450/11/4/215

Krisztina Christmon (PhD student, vanEngelsdorp Lab), who is studying the host-parasite-pathogen interaction of honeybees, is co-author of a paper published in Viruses special issue: Advances in Honey Bee Virus Research. Follow link to read Krisztina’s first ever publication titled, “Development of a Honeybee RNA Virus Vector Based on the Genome of a Deformed Wing Virus.” Krisztina and her fellow researchers are hopeful that the development of these vectors could lead to the further understanding of viruses like deformed wing virus including similar viruses affecting different bee species.

https://doi.org/10.3390/v12040374

Congratulations on reaching this milestone Krisztina!

Congratulations to Gussie MacCracken (PhD Student, Shultz Lab) whose paper is out in Biology Letters today!  Her research extends the history of plant–mite mutualisms back another 25 million years.  

Publication: "Late Cretaceous domatia reveal the antiquity of plant–mite mutualisms in flowering plants."   https://doi.org/10.1098/rsbl.2019.0657

Gussie Maccracken (PhD student, Shultz Lab) co-authors paper published in Science looking at the recovery of ecosystems after the Cretaceous-Paleogene extinction. The publication was featured in The NY Times and a corresponding NOVA special. 

https://www.nytimes.com/2019/10/24/science/fossils-mammals-dinosaurs-colorado.html

https://www.pbs.org/wgbh/nova/video/rise-of-the-mammals/

​Postdoc Torsten Schoneberg and Assistant Professor Kelly Hamby work with MSU & USDA to explore the use of microbial sterilants as a management tool for Spotted-Wing Drosophila infestations. Check out recently published paper on their research, “Exploring the Efficacy andMechanisms of a Crop Sterilant for Reducing Infestation by Spotted-Wing Drosophila (Diptera: Drosophilidae)”

Study led by Professor Emerita Barbara Thorne looks into the origins of conehead termites in Florida. Publication featured in Entomology Today.  

Quote: 
“Our results show that human transport of infested materials is a significant risk for spreading populations of invasive conehead termites,” Thorne says. “The operational application of this result is that, beginning immediately upon discovery of invasive coneheads (or any species in the genus Nasutitermes), alerts and precautions must be implemented to prevent movement of potentially infested materials to a new location.”

​Read full article here>>
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Publications
Cato A, ^ Afful E, Nayak MK and Phillips TW. Evaluation of Knockdown Bioassay Methods to Assess Phosphine Resistance in the Red Flour Beetle, Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae). Insects. 2019.
https://dx.doi.org/10.3390%2Finsects10050140

Dively GP, Huang F, Oyediran I, Burd T and Morsello S. Evaluation of gene flow in structured and seed blend refuge systems of non-Bt and Bt corn. Journal of Pest Science. 2019. https://link.springer.com/article/10.1007/s10340-019-01126-4

Thompson BM, Bodart J and Gruner DS. Community resistance to an invasive forest insect–fungus mutualism. Ecosphere. 2019. DOI: https://doi.org/10.1002/ecs2.2609

^Lewis MT, and Hamby K.A. Differential impacts of yeasts on feeding behavior and development in larval Drosophila suzukii (Diptera:Drosophilidae).  Scientific Reports. 2019. (manuscript accepted)

Serrano-Brañas CI, Espinosa-Chávez B and ^MacCracken SA. Teredolites trace fossils in log-grounds from the Cerro del Pueblo Formation (Upper Cretaceous) of the state of Coahuila, Mexico. Journal of South American Earth Sciences. 2019.  https://doi.org/10.1016/j.jsames.2019.102316

Niu K, Xiang L, Jin Y…[& 10 others including Wang J]. Identification of LARK as a novel and conserved G-quadruplex binding protein in invertebrates and vertebrates. Nucleic Acids Research. 2019. DOI:  DOI: https://doi.org/10.1093/nar/gkz484

Shen C, Zhang Y, Xia D, Wang J and Tang Q. Sensilla on the Antennal Funiculus of the Maize Weevil, Sitophilus zeamais (Motschulsky) (Coleoptera: Curculionidae): A Morphological Investigation. The Coleopterists Bulletin. 2019. DOI: https://doi.org/10.1649/0010-065X-73.2.443

Talks and Presentations
^Abell KJ,  ^Andrade RB,  Duan JJ, Gruner DS and Shrewsbury PM. “Do treated ash trees confer a protective ‘silhouette’ from emerald ash borer for neighboring trees? Joint meeting of IUFRO Working Parties: Population dynamics and integrated management of forest insects, Quebec City, Canada. 2019.

Gruner DS, Rankin EEW,  Knowlton JL, Flaspohler DJ, Giardina CP, and Fukami T. “Does forest fragment size mediate the impacts of introduced rodent predators? Foraging behavior of Hawaiian birds and their arthropod resources.” 56th Annual Meeting of the Association for Tropical Biology and Conservation, Antananarivo, Madagascar.2019.

^Jayd K, R MacKenzie, M Apwong and DS Gruner. “Mangrove herbivory across a salinity gradient.” Annual Meeting of the Entomological Society of America, St. Louis, MO.2019.

Pick L. "What is RNA interference, and how will it affect the future of food?" Tech Talk. USDA, Washington DC. 2019

^Tielens EK and Gruner DS. "Insect communities across a space for time chronosequence converge over time: analyzing patterns and drivers of beta-diversity on Hawai‘i." Annual Meeting of the Ecological Society of America, Louisville, KY.2019.

Bold ENTM Faculty; ^ENTM current/former graduate student or post-doc; *ENTM research staff

New paper, co-authored by UMD Entomology Lecturer Bretton Kent, describes the dental transition between megalodon ancestor, Carcharocles chubutensis, and Carcharocles megalodon. The study titled, "The transition between Carcharocles chubutensis and Carcharocles megalodon (Otodontidae, Chondrichthyes): lateral cusplet loss through time", was published this week in the Journal of Vertebrate Paleontology.

Patricia L. Graham, Research Assistant Scientist and Entomology colleagues W. Ray Anderson, Elizabeth A. Brandt, JieXiang (PhD 17’, UMD MOCB, Pick Lab) and Leslie Pick, have a new paper out in Developmental Biology. Check out “Dynamic expression of Drosophila segmental cell surface-encoding genes and their pair-rule regulators” here: https://doi.org/10.1016/j.ydbio.2019.01.015

​UMD Scientists, Postdoctoral Research Associate Alina Avanesyan and Professor William Lamp, assessed native Hawaiian plant responses to leafhopper injury. Read findings in their recent paper titled, "Short-Term Physiological Response of a Native Hawaiian Plant, Hibiscus arnottianus, to Injury by the Exotic Leafhopper, Sophonia orientalis (Hemiptera: Cicadellidae)", published in Environmental Entomology.