scholarly journals The Proteocephalus species-aggregate (Cestoda) in sticklebacks (Gasterosteidae) of the Nearctic Region, including description of a new species from brook stickleback, Culaea inconstans

2020 ◽  
Vol 67 ◽  
Author(s):  
Tomas Scholz ◽  
Anindo Choudhury ◽  
Patrick A. Nelson
Zootaxa ◽  
2006 ◽  
Vol 1126 (1) ◽  
pp. 63 ◽  
Author(s):  
PAULO S.F. FERREIRA ◽  
LÍVIA A. COELHO

The Resthenini genus Opistheurista has been known until now by the single species O. clandestina, which occurs in the Nearctic region. While studying mirids from Rio Grande do Sul, Brazil, we found a female exemplar as a new species. We provide descriptions, diagnoses, illustrations, and a key to distinguish the two species of genus Opistheurista.


Zootaxa ◽  
2004 ◽  
Vol 716 (1) ◽  
pp. 1
Author(s):  
KEVIN M. PITZ

A new species of Epsilogaster recently discovered from Florida, Epsilogaster fullertoni Pitz n. sp., the third species of Epsilogaster described from the Nearctic region is described and the key to species of Epsilogaster is updated to include E. fullertoni.


1998 ◽  
Vol 29 (1) ◽  
pp. 25-28 ◽  
Author(s):  
Yoshihisa Abe

AbstractSynophromorpha Ashmead is a genus of cynipid inquilines associated with Diastrophus galls on Rubus bushes. All described species, except S. tobiasi which doubtfully belongs to the genus, are restricted to the Nearctic Region. Synophromorpha taketanii sp. n., a fifth species of this genus, is described from Japan. This is the first reliable record of the genus from the Palaearctic Region and reveals that Synophromorpha has a disjunct distribution. Adults of S. taketanii emerged from stem galls on Rubus palmatus. Study of Periclistus natalis and P. quinlani showed that Synophromorpha and Periclistus intergrade. It is considered preferable to retain these two as separate genera on the basis of their host associations.


1988 ◽  
Vol 66 (6) ◽  
pp. 1328-1333 ◽  
Author(s):  
Becky A. Lasee ◽  
William F. Font ◽  
Daniel R. Sutherland

Culaeatrema inconstans gen.n., sp.n. is described from the intestine of Culaea inconstans (Kirtland) collected in Wisconsin. Culaeatrema is a small, fusiform, nonspinous trematode resembling both allocreadiins and bunoderins. Culaeatrema is placed in the subfamily Bunoderinae because testes are oblique in position, uterus extends into the posterior region, and vitellaria do not extend beyond the anterior testis. Reproduction in two populations of the new species from Shell and Little Waumandee creeks appears to be parthenogenetic. Parthenogenetic worms exhibited larger phenotypic size, one or both testes lacking in 84% of the examined specimens, lack of spermatozoa, and reduced development of male reproductive structures. A discussion of parthenogenesis in parasitic helminths is included.


1992 ◽  
Vol 23 (3) ◽  
pp. 307-317 ◽  
Author(s):  
Thomas Pape

AbstractThe genera Agria Robineau-Desvoidy, 1830, Angiometopa Brauer & Bergenstamm, 1889, and Toxonagria Shewell, 1987 are diagnosed and their monophyly discussed. Diagnostic character states for the three genera in their present definitions are: Agria: Phallic tube with a pair of lateral sclerotizations slanting antero-ventrally from the apex; acrophallus strongly tapering. Angiometopa: Gonostylus with membranous lobe at base; phallic tube with a pair of armlike processes encompassing base of acrophallus. Toxonagria: Male hind femur thickened and curved; male cercus straight; acrophallus with broad, membranous phallotreme; male gonocoxal lobe with an extra subapical tooth or hook. The name Omocera Lioy, 1864 (an objective senior synonym of Angiometopa) is preoccupied by Omocera Chevrolat, 1835 (Coleoptera: Chrysomelidae). Angiometopa is proposed as a senior synonym of Sarcofahrtia Parker, 1916, syn.n. Agria hikosana (Kurahashi, 1975), comb.n., Agria shinonagai (Kurahashi, 1975), comb.n., and Agria mihalyii (Rohdendorf & Verves, 1978), comb.n. are transferred from their previous position in Angiometopa. Angiometopa bajkalensis Kolomyietz & Artamonov, 1981 is recorded from the Nearctic Region for the first time (Canada: Alberta, British Columbia, Yukon), and Toxonagria arnaudi sp.n. is described from Canada (British Columbia) and USA (California).


1982 ◽  
Vol 114 (2) ◽  
pp. 169-172 ◽  
Author(s):  
Leonard A. Kelton

AbstractPlagiognathus ribesi n. sp. is described from British Columbia and Colorado. Psallus salicellus (Herrich-Schaeffer), an introduced European species earlier reported from Nova Scotia, has also been found to occur in Prince Edward Island and British Columbia.


ZooKeys ◽  
2019 ◽  
Vol 818 ◽  
pp. 35-42
Author(s):  
Stefano Speranza ◽  
Massimo Olmi ◽  
Adalgisa Guglielmino ◽  
Mario Contarini

A new species ofGonatopusLjungh, 1810,G.jaliscanussp. n., from Jalisco, Mexico, is described and illustrated. In the Neotropical region,G.jaliscanusis similar toG.forestalisOlmi, 1998, but it is distinguished by the black mesosoma (except prothorax, mesoscutum, and mesoscutellum that are yellow), and the metapostnotum being granulated and not rugose; inG.forestalisthe mesosoma is completely black and the metapostnotum is granulated and strongly rugose. In the Nearctic region, the new species is morphologically similar toG.currieiKrombein, 1962, but it is distinguished by the dull and granulated metapostonotum; inG.currieithe metapostnotum is shiny and unsculptured. The new species belongs toGonatopusgroup 7. The keys to the females of the Nearctic and Neotropical species of this group are modified to include the new taxon.


Zootaxa ◽  
2021 ◽  
Vol 2291 (1) ◽  
Author(s):  
ANALÍA R. DÍAZ ◽  
ESTELA C. LOPRETTO

Cypriconcha hypsophila n. sp. is described and illustrated from high-altitude freshwater bodies within the Argentine province of Catamarca, which represents the first record of this genus in South America. This paper also presents a taxonomical key for identification of all species within the genus. Some comments concerning how this particular species could have spread from the high mountains from the Nearctic region to those of the northwestern Andes are provided.


1990 ◽  
Vol 122 (3) ◽  
pp. 389-392
Author(s):  
Michael Sanborne

AbstractCymodusopsis townesorum sp.nov. and C. nigricincta novomexicana ssp.nov. (Hymenoptera: Ichneumonidae) are described from the Nearctic region.


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