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New tropical species of Litoleptis.
Full text link18 pages : illustrations (some color), map ; 26 cm.The genus Litoleptis has consisted of nine described species, seven of them Asian and only two in the New World: L. alaskensis Chillcott, known from two specimens from northwest Alaska, and L. chilensis Hennig, known from a male specimen from near Santiago, Chile. A third New World species is described here, Litoleptis tico, n. sp., based on a single female from Costa Rica. The species is unique for the genus in having a vestigial proboscis and lacking spermathecal accessory ducts and glands. Female terminalia are unknown for the other two New World species. A morphologically based, preliminary phylogeny of spaniines is provided, indicating Litoleptis is recently derived among spaniines and thus Rhagionidae; the Early Cretaceous Litoleptis fossilis is a stem group to the living species. A derived position of the genus, its apparently broad distribution, and an abundance in Japan where Litoleptis has been bred from liverworts (Imada and Kato, 2016a), all indicate that these flies are probably not at all relict, simply vastly undersampled because of a reliance on mass-collecting techniques
How do velocity structure functions trace gas dynamics in simulated molecular clouds?
No full textIn Chira et al. (subm.), we investigate the time evolution of gas dynamics
within simulated molecular clouds, as well as how velocity structure functions
trace the dominating driving sources of turbulence. The molecular clouds are
formed self-consistently within kiloparsec-scale numerical simulations of the
interstellar medium that include self-gravity, magnetic fields, supernovae-
driven turbulence, and radiative heating and cooling.
Here, we provide the underlying data for the analysis and plots presented in
the paper submitted to Astronomy & Astrophysics. The simulations are run using
an implementation of the Flash code. We present data for each of the, in total,
160 timesteps in HDF5 format, the final velocity structure functions as
functions of lag and time.
Note that due to technical problems we are currently able to offer the raw
data for those simulations that resolve the local Jeans length with 4 cells
only. We will upload the higher Jeans-resolved data as soon as possible
Bombus griseocollis.
Full text link17 pages : illustrations ; 26 cm.This paper describes and illustrates the egg, fifth, first, and fourth larval instars, as well as the female pupa of Bombus (Cullumanobombus) griseocollis (DeGeer), all collected from a single nest in June 2017 in Wisconsin. In so doing, attempts are made to understand the biological significance of the anatomical and behavioral features of these various life stages
Supplemental Material for 'A new collared lizard (Tropidurus, Tropiduridae) endemic to the western Bolivian Andes and its implications for seasonally dry tropical forests. (American Museum novitates, no. 3896)'
No full textSupplemental Material for 'A new collared lizard (Tropidurus, Tropiduridae) endemic to the western Bolivian Andes and its implications for seasonally dry tropical forests. (American Museum novitates, no. 3896)
Trapdoor spider genus Actinopus.
Full text link83 pages : illustrations, maps ; 26 cm.The genus Actinopus Perty, 1833, is revised for Argentina, comprising a total of 23 species. The female of A. insignis (Holmberg, 1881) is described for the first time; the species is found in northern Buenos Aires, southern Santa Fe, and Uruguay. The female of A. longipalpis (Koch, 1842), previously known only from the male type from Uruguay, is described for the first time, and the species is newly cited for Argentina (Entre Ríos). Twenty new species are recognized, described and illustrated. Thirteen of the new species are based on males and females (A. reycali, sp. nov., from Jujuy and Salta; A. clavero, sp. nov., from Córdoba; A. szumikae, sp. nov., from Córdoba, southern Buenos Aires, Santa Fe and Corrientes; A. coylei, sp. nov., from Salta and Santiago del Estero, A. argenteus, sp. nov., from Santiago del Estero, Córdoba and Catamarca, A. ramirezi, sp. nov., from Misiones, A. patagonia, sp. nov., from Chubut, La Pampa, Río Negro and southern Buenos Aires, A. gerschiapelliarum, sp. nov., from Córdoba, northern Buenos Aires, southern Santa Fe, northern La Pampa and Canelones in Uruguay, A. pampa, sp. nov., from La Pampa, A. septemtrionalis, sp. nov., from Salta, Tucumán, Catamarca, and Formosa, A. taragui, sp. nov., from Corrientes, Chaco, and Misiones, A. excavatus, sp. nov., from Córdoba, A. casuhati, sp. nov., from southern Buenos Aires). Only one of the new species described is based on females only (A. indiamuerta, sp. nov., from Tucumán); and the remaining six on males (A. puelche, sp. nov., from southern Buenos Aires and Uruguay, A. cordobensis, sp. nov., from San Luis and Córdoba, A. magnus, sp. nov., from Córdoba, A. ariasi, sp. nov., from Formosa, A. palmar, sp. nov., from Entre Ríos, and A. balcarce, sp. nov., from southern Buenos Aires). New morphological characters that can help solve phylogenetic relationships within the genus are described. A dichotomous key for all the species from Argentina is provided, as well as maps of the known geographic distribution for all the species. Three of the species treated here (A. gerschiapelliarum, A. puelche, and A. insignis) are recorded also for Uruguay
Supplemental Data: Effect of the heating rate on the stability of the three-phase interstellar medium
No full textIn Hill et al (2018), we investigated the impact of the far ultraviolet (FUV) heating rate on the stability of the three-phase interstellar medium using three-dimensional simulations of a 1 kpc^2, vertically-extended domain. We found that even absent a variable star formation rate regulating the FUV heating rate, the gas physics keeps the pressure in the regime in which the cold and warm neutral media coexist. Here, we provide the underlying data for the figures presented in the paper in The Astrophysical Journal. The simulations were run using an implementation of the Flash code version 4.2. We present data for one timestep from each of 22 different simulations in HDF5 format
North American Hirtodrosophila.
Full text link75 pages : illustrations (some color) ; 26 cm.Species concepts are morphologically revised and updated for members of the mycophagous genus Hirtodrosophila Duda that occur in America north of Mexico. Photomicrographs of external features, illustrations of male and female terminalia, and detailed descriptions are provided for 12 species. One species, H. cinerea (Patterson and Wheeler) is known only from the original description; its status is uncertain. Species exclusively from the southwestern United States are H. grisea (Patterson and Wheeler), H. longala (Patterson and Wheeler), and H. orbospiracula (Patterson and Wheeler). Hirtodrosophila alabamensis (Sturtevant) and H. duncani (Sturtevant) are widespread throughout the eastern half of North America; the latter species is morphologically disparate for Hirtodrosophila but provisionally retained in the genus. Hirtodrosophila chagrinensis (Stalker and Spencer) is very rare, known only from two female specimens from the northern United States. Hirtodrosophila ordinaria (Coquillett) is the most widespread species of the genus in North America, occurring throughout the northern half of the continent up to Alaska; H. shaitanensis (Sidorenko) from far eastern Russia may be a junior synonym. A preliminary scheme of relationships in the H. melanderi species group (including H. ordinaria) is presented. Two species from Florida (H. pictiventris (Duda), H. prognatha (Sturtevant)) and one from Florida plus other Gulf states (H. thoracis (Williston)) are widespread throughout the Caribbean, Central America, and portions of South America. Hirtodrosophila mendeli (Mourão et al.), from Brazil, may be a junior synonym of H. prognatha. Two new species are described from southern Florida: H. florida, n. sp., and H. jaenikei n. sp., the latter in the nigrohalterata species complex. A key to the North American species is provided
Biostratigraphy and diversity of Paleogene perissodactyls from the Erlian Basin of Inner Mongolia, China.
Full text link60 pages : illustrations (some color), maps ; 26 cm.Extant perissodactyls (horses, rhinos, and tapirs) comprise a small portion of living mammals, but fossil perissodactyls were more diverse and commonly dominated Paleogene faunas. Unfortunately, the taxonomy and distribution of some Chinese Paleogene perissodactyls remain controversial and unclear, hampering the correlation of Asian paleofaunas with paleofaunas from other continents. Here we clarify the temporal and spatial distribution of Paleogene perissodactyl species from the Erlian Basin based on published specimens, archives, and our recent fieldwork. The strata of the Erlian Basin range nearly continuously from the late Paleocene to the early Oligocene, and almost all Eocene Asian Land Mammal Ages (ALMA) are based on corresponding faunas from the Erlian Basin. We revise the most complete section of deposits at Erden Obo (=Urtyn Obo) that range in age from the late Paleocene to the early Oligocene in the Erlian Basin, and correlate it with other type formations/faunas in the basin based mainly on the perissodactyl biostratigraphy and lithostratigraphy. Furthermore, we discuss perissodactyl faunal components and their diversity from the early Eocene to the early Oligocene in the Erlian Basin, as well as the correlation between middle Eocene ALMAs and North American Land Mammal Ages based on perissodactyl fossils. The general decrease in perissodactyl diversity from the middle Eocene to the late Eocene can probably be attributed to a global climatic cooling trend and related environmental changes. The diversity of perissodactyls declined distinctly during the Eocene-Oligocene Transition, when global average temperatures dropped considerably