A new genus of Stenetriidae Hansen, 1905 (Asellota: Isopoda: Crustacea) from the Great Barrier Reef, Australia and the southwestern Pacific

Onychatrium gen. nov. is described, with five included species: Onychatrium forceps sp. nov., the type species and Onychatrium torosus sp. nov., both from the Great Barrier Reef; Onychatrium entale (Nordenstam, 1946) comb. nov., from Tapateuen (= Tabiteue Island), Gilbert Islands; Onychatrium thomasi (Bolstad & Kensley, 1999) comb. nov., from Madang, Papua New Guinea; and Onychatrium echiurum (Nobili, 1906) comb. nov., and species inquirenda from the Tumaotu Islands, Eastern French Polynesia. The primary distinguishing characters for Onychatrium gen. nov. are a trapezoid pseudosrostrum, the male pereopod 1 with elongate dactylus (4.7-7.3 as long as proximal width), propodus with strongly produced and acute lobe, carpus with a distally acute, flat, ventrally directed process (except O. torosus sp. nov., which has a short and truncate process) and the merus with a distally directed inferodistal lobe. The genus is known only from the southern Pacific, from the Tuamotus (eastern French Polynesia) to the Great Barrier Reef and northern Papua New Guinea

A new deep-water species of Myopiarolis Bruce, 2009 (Crustacea: Isopoda: Serolidae) from New Zealand waters

Myopiarolis tona sp. nov. is described from the Challenger Plateau, southern Lord Howe Rise and the west coast of the North Island, New Zealand at depths of 634–1250 m. M. tona sp. nov. can be identified by the prominent posteriorly directed dorsal nodule on fused pereonites 5–7. There are nine species in four genera of the cold-water, epibenthic family Serolidae recorded from New Zealand waters, three species of Myopiarolis Bruce, 2009, one undescribed species of Acutiserolis Brandt, 1988, four of Brucerolis Poore and Storey, 2009 and the monotypic Spinoserolis Brandt, 1988

A new genus of Stenetriidae Hansen, 1905 (Asellota: Isopoda: Crustacea) from the Great Barrier Reef, Australia and the southwestern Pacific

Onychatrium gen. nov. is described, with five included species: Onychatrium forceps sp. nov., the type species and Onychatrium torosus sp. nov., both from the Great Barrier Reef; Onychatrium entale (Nordenstam, 1946) comb. nov., from Tapateuen (= Tabiteue Island), Gilbert Islands; Onychatrium thomasi (Bolstad & Kensley, 1999) comb. nov., from Madang, Papua New Guinea; and Onychatrium echiurum (Nobili, 1906) comb. nov., and species inquirenda from the Tumaotu Islands, Eastern French Polynesia. The primary distinguishing characters for Onychatrium gen. nov. are a trapezoid pseudosrostrum, the male pereopod 1 with elongate dactylus (4.7-7.3 as long as proximal width), propodus with strongly produced and acute lobe, carpus with a distally acute, flat, ventrally directed process (except O. torosus sp. nov., which has a short and truncate process) and the merus with a distally directed inferodistal lobe. The genus is known only from the southern Pacific, from the Tuamotus (eastern French Polynesia) to the Great Barrier Reef and northern Papua New Guinea

Potential Crop Evapotranspiration and Surface Evaporation Estimates via a Gridded Weather Forcing Dataset

Absent local weather stations, a gridded weather dataset can provide information useful for water management in irrigated areas including potential crop evapotranspiration calculations. In estimating crop irrigation requirements and surface evaporation in Utah, United States of America, methodology and software were developed using the ASCE Standardized Penman-Monteith Reference Evapotranspiration equation with input climate drivers from the North American Land Data Assimilation System (NLDAS) gridded weather forcing dataset and a digital elevation model. A simple procedure was devised to correct bias in NLDAS relative humidity and air temperature data based on comparison to weather data from ground stations. Potential evapotranspiration was calculated for 18 crops (including turfgrass), wetlands (large and narrow), and open water evaporation (deep and shallow) by multiplying crop coefficient curves to reference evapotranspiration with annual curve dates set by summation of Hargreaves evapotranspiration, cumulative growing degree days, or number of days. Net potential evapotranspiration was calculated by subtracting effective precipitation estimates from the Daymet gridded precipitation dataset. Analysis of the results showed that daily estimated potential crop evapotranspiration from the model compared well with estimates from electronic weather stations (1980–2014) and with independently calculated potential crop evapotranspiration in adjacent states. Designed for this study but open sourced for other applications, software entitled GridET encapsulated the GIS-based model that provided data download and management, calculation of reference and potential crop evapotranspiration, and viewing and analysis tools. Flexible features in GridET allows a user to specify grid resolution, evapotranspiration equations, cropping information, and additional datasets with the output being transferable to other GIS software

Revision of the cirolanid isopod genus Odysseylana Malyutina, 1995 (Crustacea) with description of two new species from Singapore

The genus Odysseylana Malyutina, 1995 is revised and a new diagnosis presented; two new species from Singapore are described: Odysseylana sakijang sp. nov. and Odysseylana temasek sp. nov. The monotypic genus Parilcirolana Yu & Li, 2001, is placed in synonymy, bringing total number of species in Odysseylana to four including the type species Odysseylana sirenkoi Malyutina, 1995 and Odysseylana setosa (Yu & Li, 2001) comb. nov. The genus is known only from coastal waters from Singapore to off Macau, western Pacific. The principal distinguishing character of Odysseylana are an elongate body shape (2.9–3.5 long as greatest width), head without a rostral point, pentagonal and flat frontal lamina; antenna peduncle articles 1–3 short, 4 and 5 subequal in length and longest; and pleopod 1 peduncle quadrate, and a slender pleopod 1 endopod

Redescription of three cirolanid isopods (Crustacea: Peracarida) from Indonesia

Three species of Cirolanidae described by Nierstrasz in 1931 are redescribed from the type material: Cirolana indica Nierstrasz, 1931, with new material from Singapore and Lombok Island, Indonesia; C. vanhoeffeni Nierstrasz, 1931; and C. stebbingi Nierstrasz, 1931, which is here transferred to the genus Politolana Bruce, 1981 based on the elongate body, long peduncle of pleopod 1, narrow and slender frontal lamina, flat and robust carpus of pereopod 7, long and acute robust setae on merus–propodus pereopod 1, secondary unguis on dactylus, and antenna peduncle articles 1–2 shorter than the subequal articles 3–5

Simple Sprinkler Performance Testing for Weber County

This fact sheet describes how to perform a site inspection and a sprinkler test so you can irrigate your landscape more efficiently, and provides an irigation schedule for Weber County

Vegetable Irrigation: Sweet Pepper and Tomato

This fact sheet discusses basic principles that will help ensure proper irrigation of sweet pepper and tomato

Review of Mothocya Costa in Hope 1851 (Crustacea: Isopoda: Cymothoidae) from southern Africa with the description of a new species

Three species of Mothocya are reported from the east coast of southern Africa: Mothocya plagulophora (Haller, 1880) from Maputo, Mozambique, from the gills of Hemiramphus far (Forsskål, 1775); Mothocya renardi (Bleeker, 1857) from diverse localities in South Africa and Mozambique, from the hosts Strongylura leiura (Bleeker, 1850) and Tylosurus choram (Rüppell, 1837); and Mothocya affinis sp. nov. from Sodwana Bay, South Africa, from the gills of Hyporamphus affinis (Günther, 1866). Mothocya affinis sp. nov. is characterised by relatively small size (maximum 16 mm); large, wide coxae on pereonite 7 that overlap the pleon; uropods that do not extend past the pleotelson posterior margin; produced anterolateral margins on pereonite 1; and a twisted pleon and pleotelson. Mothocya katoi Nunomura, 1992 and Mothocya toyamaensis Nunomura, 1993 are both transferred to the genus Ceratothoa, with M. katoi being placed into junior synonymy with Ceratothoa guttata (Richardson, 1910). Irona ogcocephalus Avdeev & Avdeev, 1974 and I. callionymus Avdeev & Avdeev, 1974 are both transferred to Elthusa, and Irona trillesi Rokicki, 1986 is synonymised with Mothocya longicopa Bruce, 1986. A key to the south-western Indian Ocean species of Mothocya is given, and a table summarising recent and new nomenclatural acts in the genus is provided