- 1 Family Delphacidae Leach, 1815
- 1.1 Subfamily Delphacinae Leach, 1815
- 1.2 Tribe Delphacini Leach, 1815
Family Delphacidae Leach, 1815
Subfamily Delphacinae Leach, 1815
Tribe Delphacini Leach, 1815
Genus Pareuidella Beamer, 1951
Type species: Pareuidella spatulata Beamer, 1951.
USA: Widespread, also northern Neotropics and Caribbean.
Only five species are described in this genus; I am aware of at least 2 undescribed Mesoamerican species. Despite gaps in the published range, all species, except magnistyla, are probably widely distributed in the gulf coast states. P. magnistyla is mostly Neotropical and Caribbean. P. weedi is the most northerly distributed.
Pareuidella avicephaliforma Beamer, 1951 – USA: AL, FL, GA, LA, MS, TX; Cuba.
Pareuidella spatulata Beamer, 1951 – USA: AR, FL, GA, IL, NC, TN
Pareuidella magnistyla (Crawford, 1914) – USA: AZ, GA, NC?; Costa Rica, Cuba, Dominican Republic, Grenada, Mexico (Guerrero, Sinaloa, Veracruz), Panama, Puerto Rico, St. Thomas, Turks & Caicos, Venezuela) (NC records, and possibly GA also, are likely misidentification errors for P. weedi, which is very similar)
= Megamelus magnistylus Crawford, 1914: 627-628.
= Liburnia magnistylus (Crawford, 1914); comb. by Van Duzee 1916a: 84.
= Liburnia magnistyla (Crawford, 1914); emendation by Van Duzee 1917b: 778.
= Euidella magnistylus (Crawford, 1914); comb. by Muir & Giffard 1924: 10.
= Euidella magnistyla (Crawford); emendation by Metcalf 1943: 246.
= Euides magnistyla (Crawford, 1914); comb. by implication Metcalf 1952: 230-231.
= Pareuidella magnistyla (Crawford, 1914); comb. by Kennedy et al. 2012: 404-405.
Pareuidella triloba (Metcalf, 1923) – USA: AL, FL, LA, MS, NC, SC, TX; Bahamas (Cat, San Salvador); Belize; Bermuda (reported as error: USA: MO – lapsis for MS)
= Liburnia triloba Metcalf, 1923: 208.
= Euidella vanduzeei Muir & Giffard, 1924: 11.
= Euidella triloba (Metcalf, 1923); comb. by Metcalf 1943: 249.
= Euides triloba (Metcalf, 1923); comb. by implication Metcalf 1952: 230-231.
= Euides vanduzeei (Muir & Giffard, 1924); comb. by implication Metcalf 1952: 230-231.
= Euides vanduzeei (Muir & Giffard, 1924); syn. by Kennedy et al. 2012: 404.
= Pareuidella triloba (Metcalf, 1923); comb. by Kennedy et al. 2012: 404-405.
Pareuidella weedi (Van Duzee, 1897) – USA: AZ, CA, DE, FL, GA, IL, KY, LA, MO, MS, NC, NY, OK, SC, TX, WI; Belize, Bermuda, Cayman Islands (Cayman Brac), Cuba, Dominican Republic, Jamaica, Mexico (San Luis Potosí, Sinaloa), Puerto Rico
= Liburnia weedi Van Duzee, 1897: 252.
= Euidella weedi (Van Duzee, 1897); comb. by Muir & Giffard 1924: 10.
= Euides weedi (Crawford, 1914); comb. by implication Metcalf 1952: 230-231.
= Pareuidella weedi (Van Duzee, 1897); comb. by Kennedy et al. 2012: 404-405.
None (none listed in Wilson et al. 1994). Most specimens are recorded from lights (where the genus may be common).
Limited. Does show up on “Lists of intercepted pests” (1967).
Species in this genus are externally very similar, a uniform pale brown, sometimes with weak markings in the wing. Males can be identified by male terminalia (I am not sure if they can be identified by external features), females can not be separated at this time, except by association with males. Macropters are the most common and adults of all species readily come to lights. At lights, Pareuidella is among our larger Delphacini. Brachypters are uncommon, but probably occur for all species.
The male terminalia are distinctive in having complex parameres (gonostyli) that are the best indicators of species. Pareuidella weedi has the most northerly distribution, but all 5 species occur in the southeast. Pareuidella magnistyla is quite similar to weedi, separated most readily by the projections on the anal tube (large and widely separated in magnistyla and small and more closely approximated – but not close – in weedi). Pareuidella magnistyla is the least common species in the US – it may be adventive from more southern localities – and some US records are misidentified weedi.
The genus Pareuidella is characterized by being relatively large and uniformly colored; the parameres are complexly branched and the armature of the genital diaphragm is large and avicephalaform (and usually bifid).
Pareuidella is similar to Nilaparvata except it lacks the lateral teeth on the basitarsus (that are present in Nilaparvata).
Species of Pareuidella are best separated by the features of male genitalia. Useful external features have not yet been elucidated.
Pareuidella magnistylus (very similar to weedi but more southern; note large processes on segment 10 [the anal tube])
Barringer, L. E. and C. R. Bartlett. 2018. Pennsylvania planthoppers (Hemiptera: Auchenorrhyncha: Fulgoroidea): relative abundance and incidental catch using novel trapping methods. Insecta Mundi 0661: 1–31.
Bartlett, C. R. and G. Kunz. 2015. A new genus and species of delphacid planthopper (Hemiptera: Fulgoroidea: Delphacidae) from Central America with a preliminary regional species list. Zootaxa 3946(4): 510–518 (Erratum 3963(4): 598-600).
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.
Caldwell, J. S. and L. F. Martorell. 1951 [dated 1950]. Review of the Auchenorynchous [sic] Homoptera of Puerto Rico. Part II. The Fulgoroidea except Kinnaridae. Journal of Agriculture of the University of Puerto Rico 34(2): 133-269.
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.
Beamer, R. H. 1951. A new genus and two new species of Delphacine fulgorids. Annals of the Entomological Society of America 44(2): 198-200.
Kennedy, A. C., C. R. Bartlett and S. W. Wilson. 2012. An annotated checklist of the delphacid planthoppers (Hemiptera: Delphacidae) of Florida with the description of three new species and the new genus, Meristopsis. Florida Entomologist 95(2): 395-421.
Metcalf, Z. P. 1923a. A key to the Fulgoridae of Eastern North America with descriptions of new species. Journal of the Elisha Mitchell Scientific Society 38(3): 139-230, plus 32 plates. [from http://www.lib.unc.edu/dc/jncas/]
Metcalf, Z. P. 1943. General catalogue of the Hemiptera. Fasc. IV. Fulgoroidea, Part 3. Araeopidae (Delphacidae), Smith College, Northampton, Massachusetts. 552 pp. [at the time species were in Euidella, see beginning p. 245]
Metcalf, Z. P. 1952. New names in the Homoptera. Journal of the Washington Academy of Sciences 42(7): 226-231. pdf
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.
Van Duzee, E. P. 1897a. A Preliminary Review of the North American Delphacidae. Bulletin of the Buffalo Society of Natural Sciences 5(5): 225-261.
Van Duzee, E. P. 1916. Suborder Homoptera Latr. 1810. Section Auchenorhyncha A. & S. 1843. In Check list of Hemiptera (excepting the Aphididae, Aleurodidae and Coccidae) of America north of Mexico. New York Entomological Society, New York. pp.: i-xi, 1-111.
Van Duzee, E. P. 1917a. Report upon a collection of Hemiptera made by Walter M. Giffard in 1916 and 1917, chiefly in California. Proceedings of the California Academy of Sciences (4) 7: 249-318.
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.