Browsing by Author "Jacobus, Luke M."

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    2022 BMC Ecology and Evolution image competition: the winning images
    (Springer Nature, 2022-08-19) Harman, Jennifer; Hipsley, Christy A.; Jacobus, Luke M.; Liberles, David A.; Settele, Josef; Traulsen, Arne; IUPUC Division of Science
    In 2022, researchers from around the world entered the BMC Ecology and Evolution photography competition. The contest produced a spectacular collection of photographs that capture the wonder of the natural world and the growing need to protect it as the human impact on the planet intensifies. This editorial celebrates the winning images selected by the Editor of BMC Ecology and Evolution and senior members of the journal's editorial board.
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    A new species of Notacanthella Jacobus & McCafferty, 2008 (Ephemeroptera, Ephemerellidae) from Yunnan, China
    (Pensoft, 2022) Li, Xian-Fu; Sun, Ye-Kang; Liu, Zi-Ye; Jacobus, Luke M.; Xiao, Wen; IUPUC Division of Science
    Notacanthella jinwu Li & Jacobus, sp. nov. is described based on egg, nymph, and winged stages from Dali Bai Autonomous Prefecture, Yunnan Province, China. The nymph of the new species is closely related to N. commodema (Allen, 1971), whose nymphs share a similar tuberculation of head, pronotum, and mesonotum. However, the nymph of our new species can be distinguished based on the structures of male sternum IX and abdominal tergal tubercles. In addition, the new species is distributed in subtropical high-altitude areas. The description of the male imago of the new species is the first certain one for the genus Notacanthella. Data associated with our new species allow for expanded discussion and diagnosis of Notacanthella and closely related genera. An identification key for nymphs of these groups is provided.
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    A Review of the Genus Serratella Edmunds, 1959 in China with Description of a New Species (Ephemeroptera: Ephemerellidae)
    (MDPI, 2022-11-04) Ding , Manqing; Jacobus, Luke M.; Zhou , Changfa; IUPUC Division of Science
    Species in the genus Serratella Edmunds, 1959 from China have never been compared and photographed systematically. Six valid Chinese Serratella species are recognized and revised in this paper. Among them, the imagos of S. brevicauda Jacobus et al., 2009 are unknown; the nymph of this species has a stout, strong body, with remarkably short caudal filaments and maxillary palpi. In contrast, only the imago stage of Serratella fusongensis (Su and You, 1988) (=Serratella longipennis Zhou et al., 1997, syn. nov.) is known; it has relatively long penes with small dorsal projections. The nymphs of S. setigera Bajkova, 1967 have small abdominal tergal spines but distinct, stout, blunt bristles on the spines, and the apexes of the male penes are round and shallowly divided. The fourth species, S. acutiformis sp. nov., which was collected from Western China, has sharp penial apexes (imagos) and large abdominal spines (nymphs). Unlike the former four species, S. ignita (Poda, 1761) and S. zapekinae Bajkova, 1967 has sub-quadrate penes without prominent dorsal projections. The nymph of S. ignita has lateral hair-like setae on the caudal filaments, while the nymph of S. zapekinae lacks such setae but has pairs of tubercles on the head and pronotum. Some characters used in the generic delineation of the genera Ephemerella Walsh, 1862 and Serratella, such as nymphal maxillary palpi and hair-like setae on caudal filaments as well as features of the imaginal penes and forelegs, are varied in Chinese species. However, all species in this paper have bifurcate ventral lamellae of gill VI. Our work highlights a need for further comparative systematic study of the genera Serratella, Ephemerella, and another related genus Torleya Lestage, 1917.
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    Correction to: Inaugural BMC Ecology and Evolution image competition: the winning images
    (Springer Nature, 2021-09-09) Harman, Jennifer L.; Cuff, Alison L.; Settele, Josef; Jacobus, Luke M.; Liberles, David A.; Traulsen, Arne; IUPUC Division of Science
    Following the publication of the original article [1], we were notified that: The description of Fig. 2 was incorrect: This image shows "an amphipod crustacean of the species E. verrucosus densely covered with an overgrown colony of parasitic ciliates. Ciliates living on weakened crustaceans are capable of forming vast colonies resembling a "fur coat" Should read: This image shows "an amphipod crustacean of the species E. verrucosus densely covered with an overgrown colony of parasitic ciliates and unknown oomycetes or fungi. These organisms on weakened crustaceans are capable of forming vast colonies resembling a "fur coat". The caption of Fig. 2 was changed from “Eulimnogammarus verrucosus, a species of crustacean endemic to the UNESCO World Heritage Site Lake Baikal, suffering from a parasitic ciliate infection. Attribution: Kseniya Vereshchagina” to “Eulimnogammarus verrucosus, a species of crustacean endemic to the UNESCO World Heritage Site Lake Baikal, suffering from a parasitic ciliate and unknown oomycete (water mold) or fungi infection. Attribution: Kseniya Vereshchagina”. The affiliations of the 3rd and 4th authors had been swapped by mistake. The original article has been corrected.
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    Current contributions to the systematics of Thraulodes Ulmer 1920 (Ephemeroptera: Leptophlebiidae)
    (Magnolia Press, 2021-12) Jacobus, Luke M.; IUPUC Division of Science
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    Ephemeroptera of Canada
    (ARPHA, 2019-01-24) Jacobus, Luke M.; IUPUIC Division of Science
    Thus far, 335 currently valid species in 82 genera and 21 families of mayflies (Ephemeroptera) have been documented from Canada, remarkably representing a little more than half of the combined species richness of Canada, Mexico and the USA. The current known species richness for Canada represents an increase of 11.3% as compared to that reported in 1979. Species richness is greatest in the families Heptageniidae (83), Baetidae (76) and Ephemerellidae (45). A total of 328 DNA Barcode Index Numbers (BINs) are available for Canadian mayfly species. The greatest net gains anticipated for future species tallies are for Baetidae (25), Heptageniidae (10) and Leptophlebiidae (10). A total of 66 more species overall is anticipated for Canada, with greatest gains potentially coming from lentic habitats across Canada and from far eastern and far western areas in general. However, even metropolitan areas should not be overlooked for the potential of discovery.
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    Inaugural BMC Ecology and Evolution image competition: the winning images
    (Springer Nature, 2021-08-13) Harman, Jennifer L.; Cuff, Alison L.; Settele, Josef; Jacobus, Luke M.; Liberles, David A.; Traulse, Arne; IUPUC Division of Science
    The inaugural BMC Ecology and Evolution image competition attracted entries from talented ecologists and evolutionary biologists worldwide. Together, these photos beautifully capture biodiversity, how it arose and why we should conserve it. This editorial celebrates the winning images as selected by the Editor of BMC Ecology and Evolution and senior members of the journal's editorial board.
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    Mayflies (Ephemeroptera) and Their Contributions to Ecosystem Services
    (MDPI, 2019-06-14) Jacobus, Luke M.; Macadam, Craig R.; Sartori, Michel; Division of Science, IUPUI Columbus
    This work is intended as a general and concise overview of Ephemeroptera biology, diversity, and services provided to humans and other parts of our global array of freshwater and terrestrial ecosystems. The Ephemeroptera, or mayflies, are a small but diverse order of amphinotic insects associated with liquid freshwater worldwide. They are nearly cosmopolitan, except for Antarctica and some very remote islands. The existence of the subimago stage is unique among extant insects. Though the winged stages do not have functional mouthparts or digestive systems, the larval, or nymphal, stages have a variety of feeding approaches-including, but not limited to, collector-gatherers, filterers, scrapers, and active predators-with each supported by a diversity of morphological and behavioral adaptations. Mayflies provide direct and indirect services to humans and other parts of both freshwater and terrestrial ecosystems. In terms of cultural services, they have provided inspiration to musicians, poets, and other writers, as well as being the namesakes of various water- and aircraft. They are commemorated by festivals worldwide. Mayflies are especially important to fishing. Mayflies contribute to the provisioning services of ecosystems in that they are utilized as food by human cultures worldwide (having one of the highest protein contents of any edible insect), as laboratory organisms, and as a potential source of antitumor molecules. They provide regulatory services through their cleaning of freshwater. They provide many essential supporting services for ecosystems such as bioturbation, bioirrigation, decomposition, nutrition for many kinds of non-human animals, nutrient cycling and spiraling in freshwaters, nutrient cycling between aquatic and terrestrial systems, habitat for other organisms, and serving as indicators of ecosystem health. About 20% of mayfly species worldwide might have a threatened conservation status due to influences from pollution, invasive alien species, habitat loss and degradation, and climate change. Even mitigation of negative influences has benefits and tradeoffs, as, in several cases, sustainable energy production negatively impacts mayflies.
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    Mayfly taxonomy (Arthropoda: Hexapoda: Ephemeroptera) during the first two decades of the twenty-first century and the concentration of taxonomic publishing
    (Magnolia Press, 2021) Jacobus, Luke M.; Salles, Frederico F.; Price, Ben; Pereira-Da-Conceicoa, Lyndall; Dominguez, Eduardo; Suter, P. J.; Molineri, Carlos; Tiunova, Tatyana M.; Sartori, M.; IUPUC Division of Science
    The twentieth anniversary of the first issue of Zootaxa (De Moraes & Freire, 2001) provides an appropriate opportunity to reflect on some trends in global Ephemeroptera taxonomy publishing over the last two decades, with a focus on the description of new species and the outsized role of the journals Zootaxa and ZooKeys, in particular. Detailed reviews of world Ephemeroptera knowledge up to about 2000 were collected in a series of nine papers from a symposium on the subject, published together in the proceedings of the ninth International Conference on Ephemeroptera (Domínguez 2001). Domínguez & Dos Santos (2014) provided updates and analysis for South America up to the year 2012. More recent detailed accounts of regional and taxonomic diversity, and other aspects of mayfly biology and ecology, were reviewed by Jacobus et al. (2019), while Ogden et al. (2019) discussed current issues involving higher classification.
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    New Ohio and Indiana Records of Aquatic Insects (Ephemeroptera, Plecoptera, Trichoptera, Coleoptera: Elmidae, Diptera: Chironomidae)
    (2019) Bolton, Michael J.; Macy, Sarah K.; DeWalt, R. Edward; Jacobus, Luke M.; IUPUC Division of Science
    New state records and additional locations for rarely collected species are reported for Ephemeroptera (mayflies), Plecoptera (stoneflies), Trichoptera (caddisflies), Coleoptera: Elmidae (riffle beetles), and Diptera: Chironomidae (chironomids, non-biting midges, midges). These specimen records result primarily from Ohio Environmental Protection Agency biomonitoring of Ohio streams and from records found in the Purdue University Entomological Research Collection and the Illinois Natural History Survey Insect Collection; a few records were derived from material housed in two other collections. New state records for Ohio consist of the mayflies Acentrella rallatoma Burian & Myers, Acerpenna pygmaea (Hagen), Anafroptilum album (McDunnough), Anafroptilum minor group species 1, Anafroptilum minor group species 2, Anafroptilum victoriae (McDunnough), Heterocloeon (Jubilatum) species B McCafferty et al., Heterocloeon (Jubilatum) species D McCafferty et al., Labiobaetis longipalpus (Morihara & McCafferty), Plauditus punctiventris (McDunnough), Ephemera guttulata Pictet, Habrophlebia vibrans Needham, and Anthopotamus verticis (Say); the stonefly Isoperla frisoni Illies; the caddisflies Brachycentrus nigrosoma (Banks), Homoplectra doringa (Milne), Ceraclea nepha (Ross), and Fabria inornata (Banks); the riffle beetle Oulimnius nitidulus (LeConte); and the chironomids Cricotopus (Isocladius) sp. “Ozarks” Epler, Cricotopus (Isocladius) sp. “Santa Fe” Epler, Fittkauimyia sp. [probably F. serta (Roback)], Parakiefferiella sp. F Epler, and Saetheria hirta Sæther. A previous report of the mayfly Macdunnoa persimplex (McDunnough) from the Ohio River, adjacent to Ohio, is substantiated with record data. The caddisfly Goerita betteni Ross is confirmed in Ohio. New state records for Indiana consist of the mayflies Heterocloeon (Jubilatum) species D McCafferty et al. and Leucrocuta walshi (McDunnough) and the chironomids Cricotopus (Isocladius) sp. “Ozarks” and Fittkauimyia sp. [probably F. serta (Roback)]. Recent Indiana records of the mayflies Homoeoneuria ammophila (Spieth) and Pentagenia vittigera (Walsh) are also included because these species are rarely collected and most existing records are old. These records represent significant range extensions north for Cricotopus (Isocladius) sp. “Santa Fe” Epler, Fittkauimyia sp. [probably F. serta (Roback)], Parakiefferiella sp. F Epler, and Saetheria hirta Sæther.