Genus Euryburnia Emeljanov, 2019

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Family Delphacidae Leach, 1815

Subfamily Delphacinae Leach, 1815

Tribe Delphacini Leach, 1815

Genus Euryburnia Emeljanov, 2019

Type species (in original combination): Megamelus magnifrons Crawford, 1914.

Distribution: Western Nearctic

Recognized species

Note: Emeljanov, 2019 segregated Euryburnia (as a new genus) from the Palearctic  Eurybregma. These  taxa were moved from Eurysa into Eurybregma by Hamilton (2002).

Euryburnia eurytion (Hamilton 2002: 19) – USA: ID, MT: CAN: BC
= Eurybregma eurytion Hamilton 2002: 19
= Euryburnia eurytion (Hamilton 2002: 19); comb. by Emeljaonov 2019: 372.

Euryburnia magnifrons (Crawford, 1914) – SA: AK, CA, CO, ID, MT, NM, UT, WA, WY; CAN: AB, BC, NT, SK, YK.
= Megamelus magnifrons Crawford, 1914: 614.
= Liburnia magnifrons (Crawford, 1914); comb. by Van Duzee 1916a: 84.
= Eurysa magnifrons (Crawford, 1914); comb. by Muir & Giffard 1924: 8.
= Chilodelphax magnifrons (Crawford, 1914); comb. by Wilson 1988: 337-338.
= Eurybregma magnifrons (Crawford, 1914); comb. by Hamilton 2002a: 19.
= Euryburnia magnifrons (Crawford, 1914)

Euryburnia montana (Beamer, 1952) – USA: WY; CAN: AB
= Eurysa montana Beamer, 1952b: 54-55.
= Eurybregma montana (Beamer, 1952b); comb. by by Hamilton 2002a: 19.
= Euryburnia montana (Beamer, 1952); comb. by Emeljaonov 2019: 372.

Euryburnia obesa (Beamer, 1952) – USA: MT, NV, OR, UT, WA, WY; CAN: BC.
= Eurysa obesa Beamer, 1952b: 52-54.
= Eurybregma obesa (Beamer, 1952b); comb. by by Hamilton 2002a: 19.
= Euryburnia obesa (Beamer, 1952); comb. by Emeljaonov 2019: 372.

Plant Associations

Apparently grasses

Euryburnia magnifrons – Agropyron sp. (Poales, Poaceae)

From Hamilton 2002a,b; Nickel 2003; See FLOW for possible additional plant associations.

Economic Importance

Probably limited, infrequently encountered.

Recognition

Robust species, vertex wider than long, carinae relatively obscure; frons broad, widest near fastigium, carinae obscure near fastigium.

According to Emeljanov 2019: 372

“The new genus [Euryburnia  differs from Eurybregma by narrower eumetope [frons] with a single median carina and from closely related Unkanodes Fennah, Chilodelphax Vilbaste, Kwonianella Anufriev, and Ribautodelphax Wagner by male pygofer with ventrolateral lobe of rigid margin with distinct angles, phragma without processes or teeth, and by distinct beak-shaped basal lobes of first valvifers.

 

Key to species of Euryburnia  and Eurysa (modified from Beamer, 1952 – as Eurysa)  (Line art from Beamer 1952)

1 Male styles with fingerlike projection on inner margin … Eurysa kormusi
1- Male style without such a projection … 2

2 Pygofer in lateral view with angular foot-like process on ventrocaudal margin … Euryburnia  magnifrons
2- Pygofer without such a process … 3

3 Anal segment with processes extending straight out from segment … Euryburnia obesa
3- Anal segment with processes curved … Euryburnia montana

 

Euryburnia  magnifrons

 

Euryburnia montana

Eurybregma obesa (dorsal and lateral view are of female)

Molecular resources

At this time, Genbank or Bold have limited data for this genus, relevant  Euryburnia species are currently listed under both Eurybregma and Eurysa.  Euryburnia magnifrons (as Eurybregma) was sequenced for 18S, 28S, CO1, WG in Urban et al. (2010).

Selected References

Bartlett, C. R., L. B. O’Brien and S. W. Wilson. 2014. A review of the planthoppers (Hemiptera: Fulgoroidea) of the United States. Memoirs of the American Entomological Society 50: 1-287.

Beamer, R. H. 1952. The genus Eurysa in America North of Mexico. Pan-Pacific Entomologist 28: 51-55.

Crawford, D. L. 1914a. A contribution toward a monograph of the homopterous insects of the family Delphacidae of North and South America. Proceedings of the United States National Museum 46: 557-640, plus 6 plates.

Emeljanov, A. F. 2019. New genus of the family Delphacidae (Homoptera: Cicadina) from North America. Труды Зоологического института РАН, [Proceedings of the Zoological Institute RAS] 323(3): 369-372. https://doi.org/10.31610/trudyzin/2019.323.3.369 

Hamilton, K.G.A. 2002a. Homoptera (Insecta) in Pacific Northwest grasslands. Part 1 – New and revised taxa of leafhoppers and planthoppers (Cicadellidae and Delphacidae). Journal of the Entomological Society of British Columbia 99: 3-31.

Hamilton, K.G.A. 2002b. Homoptera (Insecta) in Pacific Northwest grasslands. Part 2 – Pleistocene refugia and postglacial dispersal of Cicadellidae, Delphacidae and Caliscelidae. Journal of the Entomological Society of British Columbia. 99: 33-80.

Leach, W. E. 1815a. Entomology. The Edinburg encyclopedia; conducted by David Brewster 9: 57-172. (family Delphacidae here)

Maw, H.E.L., R. G. Foottit and K.G.A. Hamilton. 2000. Checklist of the Hemiptera of Canada and Alaska, NRC Research Press, Ottawa, Canada.

Metcalf, Z. P. 1943. General Catalogue of the Hemiptera. Fascicle IV, Fulgoroidea, Part 3, Araeopidae (Delphacidae). Smith College, Northhampton, Massachusetts. 552 pp.

Muir, F.A.G. and W. M. Giffard. 1924a. Studies in North American Delphacidae. Bulletin of the Experiment Station of the Hawaiian Sugar Planters’ Association, Entomological series no. 15: 1-53.

Scott, J. 1875. On certain British Hemiptera-Homoptera. (Description of a new genus and species of the family Delphacidae). Entomologist’s Monthly Magazine 12: 92-93.

Van Duzee, E. P. 1916a. Check list of Hemiptera (excepting the Aphididae, Aleurodidae and Coccidae) of America North of Mexico. New York Entomological Society, New York. 111 pp.

Van Duzee, E. P. 1917b. Catalogue of the Hemiptera of America North of Mexico (excepting the Aphididae, Coccidae and Aleurodidae). University of California Publications, Technical Bulletins, vol. 2. University of California Press, Berkeley, pp. i-xiv, 1-902. [see p. 716 onward]

Wilson, S. W. 1988. Delphacidae of Alaska (Homoptera: Fulgoroidea). Great Basin Naturalist Memoirs 12: 335-343.

Wilson, S. W. 1992. The Delphacidae of Yukon Territory, Canada (Homoptera: Fulgoroidea). Insecta Mundi 6(2): 79-100. pdf

Wilson, S. W., C. Mitter, R. F. Denno and M. R. Wilson. 1994. Evolutionary patterns of host plant use by delphacid planthoppers and their relatives. In: R. F. Denno and T. J. Perfect, (eds.). Planthoppers: Their Ecology and Management. Chapman and Hall, New York. Pp. 7-45 & Appendix [host information in the appendix].