scholarly journals The mitochondrial genomes of five spring and groundwater amphipods of the family Crangonyctidae (Crustacea: Amphipoda) from eastern North America

2021 ◽  
Vol 6 (6) ◽  
pp. 1662-1667
Author(s):  
Joseph B. Benito ◽  
Megan L. Porter ◽  
Matthew L. Niemiller
Author(s):  
D. W. Minter

Abstract This article describes the morphology, morphometrics, and geographical distribution of the parasite Glugea weissenbergi infecting largely freshwater fish of the family Gasterosteidae (sticklebacks) in temperate eastern North America. This parasite is only endemic in Maryland, USA.


Zootaxa ◽  
2007 ◽  
Vol 1423 (1) ◽  
pp. 27-38 ◽  
Author(s):  
CHRISTOPHER G. MAJKA ◽  
MIKAEL SÖRENSSON

The Ptiliidae of the Maritime Provinces of Canada is surveyed. Twenty-nine new provincial records from the Maritime Provinces of Canada are reported including the first records of the family from Prince Edward Island. Fourteen species are recorded for the first time for the Maritime Provinces as a whole. Acrotrichis josephi (Matthews) is recorded for the first time in eastern North America and Acrotrichis haldemani (LeConte) is recorded for the first time in Canada. The genus Pteryx is reported for the first time in Canada. At least 29 species of Ptiliidae are now known to occur in the region. The fauna is briefly discussed in terms of its overall composition, introduced species, and species associated with particular habitats. Saproxylic species found in mature forests are discussed and attention is drawn to their possible relationship to undisturbed forest conditions and the scarcity of old-growth habitats in the region.


PeerJ ◽  
2015 ◽  
Vol 3 ◽  
pp. e1509 ◽  
Author(s):  
Nicholas J. Czaplewski ◽  
Gary S. Morgan

A new species of Apatemyidae,Sinclairella simplicidens, is based on four isolated teeth that were screenwashed from fissure fillings at the late Oligocene Buda locality, Alachua County, Florida. Compared to its only congenerSinclairella dakotensis, the new species is characterized by upper molars with more simplified crowns, with the near absence of labial shelves and stylar cusps except for a strong parastyle on M1, loss of paracrista and paraconule on M2 (paraconule retained but weak on M1), lack of anterior cingulum on M1–M3, straighter centrocristae, smaller hypocone on M1 and M2, larger hypocone on M3, distal edge of M2 continuous from hypocone to postmetacrista supporting a large posterior basin, and with different tooth proportions in which M2 is the smallest rather than the largest molar in the toothrow. The relatively rare and poorly-known family Apatemyidae has a long temporal range in North America from the late Paleocene (early Tiffanian) to early Oligocene (early Arikareean). The new species from Florida significantly extends this temporal range by roughly 5 Ma to the end of the Paleogene near the Oligocene-Miocene boundary (from early Arikareean, Ar1, to late Arikareean, Ar3), and greatly extends the geographic range of the family into eastern North America some 10° of latitude farther south and 20° of longitude farther east (about 2,200 km farther southeast) than previously known. This late occurrence probably represents a retreat of this subtropically adapted family into the Gulf Coastal Plain subtropical province at the end of the Paleogene and perhaps the end of the apatemyid lineage in North America.


1971 ◽  
Vol 103 (11) ◽  
pp. 1557-1590 ◽  
Author(s):  
E. E. Lindquist ◽  
P. H. Vercammen-Grandjean

AbstractThe trombidiid subfamily Neotrombidiinae Feider is re-established and redefined, based primarily on larval characters but also on adult characters. It is closely related to the trombidiid Trombellinae on the one hand and to the Leeuwenhoekidae on the other. It consists of two genera, namely Monunguis Wharton, which is monobasic and known only from the larva, and Neotrombidium Leonardi, with 13 described species of which 7 are known from the larva and 8 from the adult (the larva and adult of 2 species are correlated by rearings).The history of the family-level placement of this group, and the controversy over whether or not to recognize two genera, are reviewed. The characters that justify the separate recognition of Monunguis and Neotrombidium are enumerated.The larva of each of the following species of Neotrombidiinae is described, illustrated and keyed: Monunguis streblida Wharton from the Caribbean area, Neotrombidium barringunense Hirst from Australia, N. tricuspidum Borland from North America, N. tenuipes (Womersley) from Malaya, N. samsinaki (Daniel) new combination from central Europe, N. anuroporum new species from Central America, N. bengalense new species from India, and N. tenebrione new species from eastern North America. Six other species of this group, known only from the adult, are listed separately but are not treated taxonomically here.The larvae of Neotrombidiinae parasitize adult insects: those of Monunguis are hyperparasites on streblid flies whereas those of Neotrombidium are ectoparasites of cerambycid, clerid, elaterid, and tenebrionid beetles that pass part of their life history under the bark of trees.In the Microtrombidiinae, Camerotrombidium Thor is noted as the valid replacement name for the preoccupied Ottonia Kramer.


EDIS ◽  
2018 ◽  
Vol 2018 (1) ◽  
Author(s):  
Ummat Somjee ◽  
Andrea Lucky

The forked fungus beetle, Bolitotherus cornutus (Panzer), is a cryptic horned beetle in the family Tenebrionidae that is found throughout much of eastern North America. The most distinctive feature of the forked fungus beetle is a pair of forward-facing horns that emerge from the thorax of the adult male (Figure 1). Males use these horns in competitions with rivals for access to reproductive opportunities with females. These beetles spend most of their lives on or within shelf fungi that grow on decaying logs. The fascinating life history of the forked fungus beetle makes this insect an excellent model for studying behavior, population dynamics, and sexual selection.


Zootaxa ◽  
2011 ◽  
Vol 3009 (1) ◽  
pp. 67
Author(s):  
ROBERT L. BLINN

The Microphysidae is one of the smallest heteropteran families, comprised of 30 species and 10 extinct species in 5 genera (Henry 2009, Vinokurov et al. 2010). Only six species are known from Canada and the continental United States (Henry 1988, Schwartz 1989, Schwartz et al. 1991). Of these six species, only two, Chinaola quercicola Blatchley and Mallochiola gagates (McAtee and Malloch, 1924), are considered native to North America. The remaining four species are Palearctic in origin. Schuh and Slater (1995) presented an excellent review of the classification, morphology and natural history for the family. Microphysids are recognized by the presence of ocelli, a distinct cuneus, a single closed cell on the hemelytral membrane, and two-segmented tarsi.


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