New Species Of Paraleptophlebia (Ephemeroptera : Leptophlebiidae) From Idaho And Washington

4 Pages·1999·1.5 MB·English

by  W P Mccafferty

Vol. 110,No.4, September&October. 1999 217
NEW SPECIES OFPARALEPTOPHLEBIA
(EPHEMEROPTERA: LEPTOPHLEBIIDAE)
FROM IDAHO AND WASHINGTON
1
\V. P. McCaffcrt>2, B.C. Kondratieff3
ABSTRACT:Paraleptophlebiajensem.n.sp,isdescribedfrommaleadultsfromKlickitatCounty,
Washington.ThespecieshasalsobeencollectedfromOwyheeCounty,Idaho,andismostclosely
related to P. tra\erae. n. sp.. which isbasedon the male adult from IdahoCounty, Idaho, previ-
ously misidentified as P. nifivenosa. Forewmg pigmentation and morphology ofthe penes are
diagnostic ofthenewspecies.
A much-usedaidtothe identificationandstudyofmayfliesofnorthwestern
NorthAmericahasbeentheunpublished MastersthesisonthemayfliesofIdaho
by S. L. Jensen (1966). Besides providing invaluable keys and figures therein,
Jensen proposed several new taxa from Idaho, including a species of
Paraleptophlebia Lestage. Jensen (1966) ostensibly determined that the new
Paraleptophlebia species, which he knew only as male adults from Owyhee
County, was similartoP. rufivenosaEaton, aspecies known from Oregon [lec-
totype locality (Spieth 1941)], Washington, and California(Eaton 1884); Brit-
ish Columbia(McDunnough 1924); and questionably Idaho(Traver 1935). Al-
though P.rufivenosawasdescribedfrom femaleadultsand femalesubimagos, a
single male adult from Idaho was assigned to the species by Traver (1935).
Female adults ofParaleptophlebia exhibit few reliable specific characteristics
andhavenotbeentreatedcomparatively(Traver 1935,HarperandHarper 1986).
Thus, Traver's (1935) male adult has formed the essential basis ofthe taxo-
nomic concept ofP. rufivenosa(Spieth 1941, McCafferty 1996) and was used
forcomparisonbyJensen(1966),althoughhehadnotexaminedTraver'sspeci-
men.
George Edmunds(whoservedasJensen'sadvisoratthe UniversityofUtah
WPM
duringthe Idaho study)recentlyrequestedthat publishaformal descrip-
tion ofthe new species, but unfortunately none ofJensen's material ofthe new
species could be located, and such a description could not proceed. More re-
cently, Robert L. Newell ofRichland, Washington collected a series ofan un-
knownParaleptophlebiaspeciesfrom KlickitatCounty, Washington, andkindly
made the material available to BCK. Characteristics ofthe male adult speci-
mens from WashingtonareconsistentwithJensen's unpublished descriptionof
anewspeciesfrom Idaho. Wearepleasedat longlasttobeabletodescribethis
species as P.jenseni, n. sp., afterSteveJensen.
1 Received March 19, 1999.AcceptedApril 22, 1999.
2DepartmentofHntomology, PurdueUniversity,West Lafayette, IN47907
3 DepartmentofBioagricultural Sciences and Pest Management, ColoradoState University, Fort
Collins. CO 80523.
ENT NEWS 110(4). 217-220, September&October 1999
218 ENTOMOLOGICALNEWS
We have also compared the new species to the male that Traver (1935)
assigned to P. rufivenosa. Traver never indicated the basis of assigning her
male specimen from Grangeville, Idaho to P. rufivenosa. In fact, "Paralepto-
phlebiarufivenosa?" is the way that Traver labeled the actual preserved speci-
men. Her assignment ofthe specimen to P. rufivenosa appears to have been
based on speculation because the male genitalia were different from those of
any other species known at the time. Certainly the general dark coloration of
the body found in Traver's specimen istypical ofseveral speciesofParalepto-
phlebia and of little use in associating sexes. Significantly, Traver's male is
devoid ofany membrane staining in the forewings, whereas Eaton indicated
that forewings ofthe female adultsofP. rufivenosawere uniformly and lightly
tinted. This alongwith any definitive evidence to link the putatively identified
specimen to P. rufivenosa leads us to conclude that Travels male is not P.
rufivenosa. Below, we consider itasanewspeciesand name it in memoriam to
JayTraver, as P. traverae, n. sp.
Eaton(1884)describedParaleptophlebiavaciva(Eaton)from MountHood,
Oregonbasedon maleadults. Femaleadultshavenotbeendescribed. Basedon
Eaton's (1884) descriptions ofboth the male off. vacivaand the female ofP.
rufivenosa, and the fact that lectotypes ofboth species are from Mount Hood
(Spieth 1941), we maintain that there is a strong possibility that the two will
eventually prove to be conspecific.
NEW SPECIES
Paraleptophlebiajenseni,
Maleadult.Bodylength7.5-9.Omm;forewinglength7.0-8.Omm.Colorgenerallydarkbrown.
Head:Colorationshiningdarkbrowntoblack;antennaebrownbasally,paleapically;ocelliwhite,
eyesmeetingalongmidline,eachdivided,withupperportiontanandlowerportionblack.Thorax:
Notashiningdark brown toblack;pleurabrown todark brown (membranous areas light brown);
sternabrown. Forewings stained brown in apical one-third toone-half, clearoronly very faintly
tinted basally; longitudinal veins light brown; crossveins pale, those in stigmatic area anasto-
mosed. Hindwings clear throughout, with pale venation. Legs light brown to dark brown, mid-
and hindlegs lighter; femora and foretibiae darker; apex offemora and base oftibiae with dark
brown markings.Abdomen:Colorationgenerallybrownwith paleposteriormarginsonsegments
dorsally and pale markings on segments ventrally; segments 1-7 with dark spiracular markings
Terga 1-2 dark brown; terga 3-7 lighter brown and translucent, with darker paired submcdian
dashes anteriorly; terga8-10brown, opaque. Sterna2-8 lighttomedium brown with paired sub-
median spots anteriorly; sternum 9 often with conspicuoulsy lighter postertnedial area bordered
bydarkbrownishblackanteriorareaextendingposterolaterally. Genitaliabrown; forcepswithout
dorsal enlargement at base; penes (Fig. I) with deep, narrow, U- to V-shaped furcation; penal
lobesproducedapicolaterallyintonarrow-acutespine-likeprojections.Caudal filamentsbrownto
graybasally, lighterapically.
Female adult Unknown.
Materialexamined. Holotype:maleadult,Washington,KlickitatCounty,RockCreek,above
Hwybridge,V-31-1998, R. L. Newell. Paratypes: eightmaleadults,samecollectingdataasholo-
type. The holotype is deposited in the Purdue Entomological Research Collection (PERC),West
Lafayette, Indiana. Paratypesaredeposited in PERC and theC. P. Gillette MuseumofArthropod
Diversity, Fort Collins, Colorado (CSU). Other material examined consisted ofone male adult.
Vol. 110,No.4,September&October, 1999 219
Washington,KlickitatCounty, BadgerGulchCreekHwybridge.V-31-1998,R.Newell; fivemale
adults, Washington, KlickitatCounty, HollerGulchCreek, upperstation, V-16-1998, R, Newell;
and 14maleadultswiththesamedataasholotype.
Discussion. ParaleptophlebiajenseniandP.traveraehavepenal lobesthat
are expanded somewhat laterally at their apices, but otherwise do not possess
any recurved processes or incisions as many species do, but neither are they
narrow and attenuated as those ofP. brunneipennis (McDunnough). This par-
ticularpenestypeshouldallowthesetwospeciestobedistinguished fromother
species ofParaleptophlebia in North America. Male adults ofthe two species
can also readily be distinguished from each other. Those ofP.jensenihave the
forewings shaded with brown stain in the apical one-third to one-half, and the
lateral aspect ofthe apices ofthe penal lobes are much more sharply pointed
and elongate. For comparative figures of Paraleptophlebia spp. genitalia in
general see Traver(1935) and Harperand Harper (1986).
Paraleptophlebiajenseni is known from Washington as indicated above.
Based on Jensen (1966), it has also been taken from Marys Creek, six miles
southeast ofGrasmere in Owyhee County, Idaho. Because Klickitat County in
Washington and Owyhee County in Idaho both adjoin the state ofOregon, it is
reasonabletoassumethat P.jenseniwill eventually be found in Oregon.
Paraleptophlebia traverae, NEW SPECIES
Paraleptophlebia rufivenosa, Traver, 1935:528. (misidentification).
Maleadult. [Thebodyofthe singleknown specimenofthisspecies ispreserved in alcohol
and is deteriorated and fragmented; however, adescription ofthe colorpattern was provided by
Traver(1935), underP. rufivenosa, and thewingsandgenitaliaare slidemounted and remain in
goodcondition.] Wingscompletelyhyaline, withnostaining. Penes (Fig. 2)with lobesseparated
bybroad U-shapedemargination, with apices broadlybeak-like laterally, but notnarrowlyacute
orspine-like.
1 2
Figs. 1-2. Paraleptophlebiapenes(ventral view). 1. P.jenseni. 2. P. truverae.
220 ENTOMOLOGICALNEWS
Female adult Unknown.
Material examined. Holotype male adult, Grangeville, Idaho, VI-27-1907, J. M. Aldrich
(genitalia [in balsam] andonesetofwings [drymounted] on twoslides). Theholotype is depos-
ited intheCornell University InsectCollection, Ithaca,NewYork.
Discussion. Paraleptophlebia traverae, P.jenseni, and P. brunneipennis
may form a closely related group ofspecies within Paraleptophlebiabasedon
their relatively simple penes lobes. Paraleptophlebia traverae is most similar
to P.jenseni\ however, the two are easily distinguished based on wing mem-
branestainingandpenesapicesdifferencesasdiscussedabove,underP.Jenseni.
ACKNOWLEDGMENTS
Wethank R. L. Newell (Riehland, Washington) forthedonationofmaterial,E. R. Hoebecke
(Cornell University) fortheloanofmaterial,andA. V. Provonsha(PurdueUniversity)forfigures.
This paperhas been assigned PurdueAgricultural Research Program Journal No. 15969.
LITERATURECITED
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scriptionofanewspecies. Can. J. Zool. 64: 1460-1468.
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Utah, Salt LakeCity. 367pp.
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