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Diskus : Nr. 20.1, 69. Jhg
(2020)
The distribution and biology of the beetles Leptinillus validus (Horn) and L. aplodontiae Ferris are summarized for North America. The beetles are ectoparasitic on rodents; L. validus on the beaver, Castor canadensis Linnaeus (Castoridae) throughout the northern part of its range, and L. aplodontiae on the mountain beaver, Aplodontia rufa (Rafinesque) (Aplodontidae) in the Pacific Northwest.
Megatharsis buckleyi Waterhouse, 1891 is newly recorded from Brazil, extending its distributional range beyond Ecuador and Peru. A further new provincial record from Ecuador is presented in detail, and the species’ distribution and habitat is discussed. Color variation within the species, with a possible geographic correlation, is reported here for the first time.
The small libellulid genus Rhodothemis is restricted to Asia and Australia. Two of the four included species were described relatively recently by Lohmann (1984) but much previously documented material was never re-identified and the distribution of species in the Indospecies in the Indo-Australian Archipelago remained poorly known. All material available in the Naturalis Biodiversity Center (RMNH) from the eastern part of the Indo-Australian Archipelago was studied and is here brought on record. Key characters are illustrated and SEM images of the genital ligula are presented.
Localities are documented for the milliped Abacion texense (Loomis, 1837) (Callipodida: Abacionidae) whose distribution forms both the northern and southern ordinal limits in the Western Hemisphere. The westernmost component of Abacion Rafinesque, 1820, A. texense is the only milliped species whose range spans the Mississippi and Pecos rivers and the Rio Grande. Distribution extremes are in Hennepin County (Co.), Minnesota, in the north; Terrell and Potter cos., Texas, in the west; Alcorn Co., Mississippi, in the east; and southwestern Tamaulipas, Mexico, in the south. Occurrences are projected for southeastern South Dakota, northwestern Alabama, and the southwestern periphery of Tennessee. The type series of A. texense consists solely of the male holotype, so a neotype will be needed if this individual is ever lost, because no paratypes were officially designated.
The southern Appalachian millipeds Boraria stricta (Brölemann, 1896) and B. infesta (Chamberlin, 1918) (Diplopoda: Polydesmida: Xystodesmidae) have become established in Westchester Co., New York, and Hartford Co., Connecticut, respectively. Only three individuals are available for the latter, but B. stricta has established a reproducing population in southern New York state. This species is also recorded from Bland Co., Virginia, in the Ridge and Valley Physiographic Province. Boraria profuga (Causey, 1955) comprises two allopatric populations, one in Montgomery Co., Arkansas, and the other in Ouachita Parish, Louisiana. Distributional records and gonopod drawings are presented for these species plus B. deturkiana (Causey, 1942).
Diverse museum diversities
(2018)
'Diversity' has become a lively key word in contemporary museum discourse and practice, with numerous policies and initiatives being conducted under its banner. Achieving 'diversity' is seen as something to be celebrated - a good thing in itself. But quite what 'diversity' refers to is itself heterogeneous, with this only rarely explicitly articulated or even recognised. As such, what exists is a shifting field of diverse diversities, which variously interlink and reinforce each other but which may also mask critical discrepancies, disconnects, incompatibilities and even contrary ambitions.
Im Sommersemester 2021 habe ich an der Universität Mainz ein Seminar zum Thema "Kanon und Diversität" unterrichtet. Ziel war, meinen eigenen Lektüre-Horizont und denjenigen der Studierenden zu erweitern. Auf das Seminarprogramm setzte ich vor allem Gegenwartsliteratur und auch Neuerscheinungen, die ich gerade gelesen oder noch lesen und diskutieren wollte und von denen ich mir eine Erweiterung des Horizonts erhoffte. Kürzere theoretische Texte und literarische Erzählungen wurden als pdf zur Verfügung gestellt, drei Romane sollten ganz gelesen werden, nämlich Fatma Aydemirs "Ellbogen" (2017), Olivia Wenzels "1000 Serpentinen Angst" (2020) und Sharon Dodua Otoos "Adas Raum" (2021).