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1. Three new species of the Synapturanus rabus complex (Microhylidae: Otophryninae) in Colombia with a review of the genus Synapturanus.

   Osorno, Mariela; Gutiérrez, Laura; Lynch, John; Keefee, Rachel; Caicedo, José; Chan, Kan; Tonini, João; de_Sá, Rafael O (March 2023, Zootaxa)

   Vences, Miguel (Ed.)

   The Neotropical microhylid genus Synapturanus was represented by only three species for almost five decades and remains poorly known. Recently two new species were described from the Eastern Guyana Shield, one from Peru, and one from Brazil. We describe three new species related to the S. rabus species complex with known distribution only in western Amazonia, Colombia. The S. rabus complex consists of the smallest species in the genus; one of the new species is slightly larger than S. rabus and we describe its full osteology; the other two new species are smaller than S. rabus. Wealso described the call and larvae of one of the new species. We provide an updated diagnosis and review the available molecular and phenotypic data for the genus. 

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2. New species of Furculanurida (Collembola, Neanuridae, Pseudachorutinae) from the Luquillo Mountains, Puerto Rico

   https://doi.org/10.3897/zookeys.917.33020  

   Ospina-Sánchez, Claudia M.; Palacios-Vargas, José G.; González, Grizelle (March 2020, ZooKeys)

   null (Ed.)

   A new species of Furculanurida is described and illustrated. Furculanurida bistribus sp. nov. differs from other species of the genus by the presence of three eyes, three setae on the dens, and the white and purple coloration pattern. A key for identification of the world species of the genus is included. 

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3. The Cephalozygoptera, a new, extinct suborder of Odonata with new taxa from the early Eocene Okanagan Highlands, western North America

   https://doi.org/doi.org/10.11646/zootaxa.4934.1.1  

   Archibald, S. B. (February 2021, Zootaxa)

   Marinov, Milen (Ed.)

   We describe the Cephalozygoptera, a new, extinct suborder of Odonata, composed of the families Dysagrionidae and Sieblosiidae, previously assigned to the Zygoptera, and possibly the Whetwhetaksidae n. fam. The Cephalozygoptera is close to the Zygoptera, but differs most notably by distinctive head morphology. It includes 59 to 64 species in at least 19 genera and one genus-level parataxon. One species is known from the Early Cretaceous (Congqingia rhora Zhang), possibly three from the Paleocene, and the rest from the early Eocene through late Miocene. We describe new taxa from the Ypresian Okanagan Highlands of British Columbia, Canada and Washington, United States of America: 16 new species of Dysagrionidae of the existing genus Dysagrion (D. pruettae); the new genera Okanagrion (O. threadgillae, O. hobani, O. beardi, O. lochmum, O. angustum, O. dorrellae, O. liquetoalatum, O. worleyae, all new species); Okanopteryx (O. jeppesenorum, O. fraseri, O. macabeensis, all new species); Stenodiafanus (S. westersidei, new species); the new genus-level parataxon Dysagrionites (D. delinei new species, D. sp. A, D. sp. B, both new); and one new genus and species of the new family Whetwhetaksidae (Whetwhetaksa millerae). 

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4. New species of the leafhopper genera Kusala Dworakowska and Diomma Motschulsky (Hemiptera: Cicadellidae: Typhlocybinae: Erythroneurini) with description of a new subgenus

   https://doi.org/10.11646/zootaxa.4514.2.9  

   CAO, YANGHUI; DMITRIEV, DMITRY A.; ZHANG, YALIN (November 2018, Zootaxa)

   Generic characteristics of the leafhopper genus Kusala Dworakowska are revised, and a new subgenus Scodela is established. A species checklist of the Kusala is provided and three new species are added: Kusala (Kusala) viraktamathi, K. (Scodela) directa and K. (S.) sinuata spp. nov.. The related genus Diomma Motschulsky is also redescribed and a new species is described: Diomma (Diomma) sangzhiensis sp. nov.. 

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5. Towards the Sato–Tate groups of trinomial hyperelliptic curves

   https://doi.org/10.1142/S1793042121500822  

   Emory, Melissa; Goodson, Heidi; Peyrot, Alexandre (November 2021, International Journal of Number Theory)

   We consider the identity component of the Sato–Tate group of the Jacobian of curves of the form C1 : y2 = x2g+2 + c, C2 : y2 = x2g+1 + cx, C3 : y2 = x2g+1 + c, where g is the genus of the curve and c in Q* is constant. We approach this problem in three ways. First we use a theorem of Kani-Rosen to determine the splitting of Jacobians for C1 curves of genus 4 and 5 and prove what the identity component of the Sato–Tate group is in each case. We then determine the splitting of Jacobians of higher genus C1 curves by finding maps to lower genus curves and then computing pullbacks of differential 1-forms. In using this method, we are able to relate the Jacobians of curves of the form C1, C2 and C3. Finally, we develop a new method for computing the identity component of the Sato–Tate groups of the Jacobians of the three families of curves. We use this method to compute many explicit examples, and find surprising patterns in the shapes of the identity components ST^0(C) for these families of curves. 

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