A new genus and two new species of Tortricidae (Lepidoptera) from the Canary Islands

2013·2.4 MB·English

by  Knud Larsen

A newgenus and two new species ofTortricidae (Lepidoptera) from the
Canary Islands
KnudLarsen
Abstract.InthispaperthenewgenusWillibaldianaisdescribed.Thedescriptionofthenewgenusisbaseduponmaterial
collectedattheIslandFuerteventura,partofthearchipelagooftheCanaryIslands,Spain.Thematerialconsistsoftwospecies
bothofthemnewtoScience.AllthematerialiscollectedfromthesamelighttrapstationedatasummerhouseattheSouthern
tipofFuerteventura-BarrancoEsquinzo,Jandia.Itisratherremarkabletofindtwonewspeciesbelongingtothesamenew
genusatthesamelocality.ItissuggestedthatthesetaxaarebelongingtoveryoldMediterraneantaxathathavesurvivedand
developedinthesemidesertenvironmentofFuerteventura.ThenewgenusisplacedinEucosminiafterClavigestaObraztsov,
1946. The names ofthe two new species are Willibaldianapaasi n. sp. and Willibaldianaschmitzi n. sp. Holotypes and
paratypesaredepositedintheauthor'scollection.
Samenvatting.EennieuwgenusentweenieuwesoortenTortricidae(Lepidoptera)vandeCanarischeEilanden
HetnieuwegenusWillibaldianawordtbeschreven,gebaseerdopmateriaalverzameldopheteilandFuerteventura,deelvande
CanarischeEilanden,enbestaanduittweenieuwesoortenvoordewetenschap.Alhetmateriaalwerdverzameldineenlichtval
dieopgesteldstaatineenbuitenverblijfopdezuidelijketipvanFuerteventura-BarrancoEsquinzo,Jandia.Hetismerkwaardig
dattweenieuwesoortenuiteennieuwgenusopdezelfdeplaatswordengevonden.Erwordtveronderstelddatzebehorentot
deoude Mediterranetaxa diezichaan desemi-woestijnomgevingvan Fuerteventura hebben aangepast. Hetnieuwegenus
wordtindeEucosminigeplaatstnetachterClavigestaObraztsov,1946. Denieuwesoortenzijn: Willibaldianapaasin.sp.en
Willibaldianaschmitzin.sp.Holotypesenparatypesstaanindeverzamelingvandeauteur.
Résumé.UngenrenouveauetdeuxespècesnouvellesdeTortricidae(Lepidoptera)desTlesCanaries
LenouveaugenreWillibaldianaestdécritd'aprèsIematérielrecueillisurl'TledeFuerteventura,quifaitpartiedel'archipeldes
ïlesCanaries.CematérielconsisteendeuxespècesnouvellespourlaScienceetfutprisdansunpiègelumineuxdanslapartie
méridionaledel'TledeFuerteventura-BarrancoEsquinzo,Jandia.IIestremarquablequedeuxespècesnouvellesappartenant
aumêmegenrenouveausoienttrouvéesdanslamêmelocalité.Onsupposequ'ils'agitdedeuxespècesappartenantauxvieux
taxa méditerranéensquisesontadaptéesauxconditionssemi-désertiquesde l'Tlede Fuerteventura. Lenouveaugenreest
placédanslatribudesEucosminijusteaprèsClavigestaObraztsov,1846.Lesdeuxnouvellesespècessont:Willibaldianapaasi
n.sp.etWillibaldianaschmitzin.sp.Lesholotypesetlesparatypessontgardésdanslacollectiondel'auteur.
Keywords.Willebaldianapaasi-schmitzi-Descriptions-Faunistics.
LarsenK.:Rdntoftevej33,DK-2870Dyssegaard,Denmark,[email protected]
Introduction Bothspecieshavebeenfoundatthesamelocalityat
thesouthtipJandia on Fuerteventura.The material has
ThefaunaofMicrolepidoptera oftheCanaryIslands, been given to me for investigation by the well-known
especiallytheTortricidae(Klimesch 1987) butalsomany lepidopterist Willibald Schmitz (Bergisch Gladbach,
other groups, have been studied intensively even from Germany), who has gathered a very large amount of
the middleofthe 19th century.The composition ofthe material from the Canary Islands, especially
fauna is partly endemic and partly influenced by the Fuerteventura.
WestAfricanfaunaandtheSouthWestEuropeanfauna. The author has studied the Tortricid fauna of the
ThedistancetoCapJubyinMoroccoisonlyabout70km Canary Islands during several decades and has been on
and thus the strong winds from the Sahara frequently sixcollectingtrips, includingtwotripsto Fuerteventura,
cause rather strong migratory activity on the Islands, searchingthesespeciesatthe localityinJandia without
especially the easternmost islands Lanzarote and success. Species living in arid environments are so
Fuerteventura.Alsothelandscapeontheseislandshasa dependent on occasional weather conditions that they
strong affinitywith the landscape ofSouthern Morocco often just fly in short periods and not every year.
and western Sahara consisting of dry rocky or sandy Because ofthe mild climate manyTortricid species can
coastand inland semi-desertand desertcombined with be found around the year at the Canary Islands, which
lowerrockyormountainousareas.Asaconsequenceof also seems to be the fact for the two new species
thesegeographicalfactorsthelevelofendemismonthe presentedhere.
eastern islands is lower than on the western islands The newtaxon Willibaldianagen. n. is suggested to
(Hacker & Schmitz 1996). Altogether more than 600 belong to the Eucosmini tribe although molecular
Lepidoptera are known from the islands and of these examinationcould revealotherpossibleSolutionstothe
about 200 are endemic (Baez 1998). The present paper positionofthegenus.
describes a new genus and two new species from the Terminology for pattern in forewing, venation and
island Fuerteventura. Whether those species are genitalia follows Horak (1999, 2006), Razowski (2002,
endemictotheIslandortheycan befoundelsewhereis 2003) and Komai (1999).All material isdeposited inthe
duetomoreprofoundfieldresearchintheneighbouring privatecollectionofKnudLarsen.
biogeographicallyareas.
Phegea41(3)01.ix.2013:50 ISSN0771-5277
Malegenitalia (Figure4). Uncusveryweek, reduced;
Systematics sociiratherbroad,rounded;tegumenbroadwithslender
pedunculi;valvaverysmallandratherweakwithabigger
Williboldiananewgenus roundedandhairycucullus;atthedorsaledgeofcucullus
Typespecies:Willibaldianapaasinewspecies threelongpointedthornsgrowinginsizetothecornerof
cucullus; aedeagus long, narrow and tipped; it is more
Description. (Figure 1) Labial palptwoand a halfthe stronglysclerotisedtowardsthetip;vinculumstrong.
diameter of the eye, whitish grey; second segment Female genitalia (Figure 6). Papilla analis long and
stronglyscaled, spatula shaped; head rough scaled with hairy; apophyses rather week and short; ostium very
white greyish tipped scales; antenna fasciculate black weekly developed or reduced; ductus bursa long,
and white ringed. Hind tibia whitish with more or less strongly sclerotised from bursa to just before ostium,
stronglyblackishringsnarrowerclosertothetipoftibia; whereitiswithoutsclerotisationandisnarrowing; bursa
two pairs of rather long spurs. In hindwing vein M2 is rounded with two small signa and a central area with
approachingbasallytoCuAlandM3ismissing. strongerwrinkles.
Forewingwith manyfine costal strigula and a costal Abdomen (Figure 8, IV. schmitzin. sp.) has strongly
foldreaching2/5thofthelength;atthetornalareathere sclerotisedspiracles-oneateachsegment.
isa reminiscenceofa speculum wherethe outerline is Etymology.Thegenusisnamedaftermygoodfriend
present but only with a very week line of leaden andproviderofthespecimensWillibaldSchmitz.
glisteningscales.
Figs.1-3.ImaginesofWillibaldianaspecies.1.-Willibaldianapaasin.sp.8Spain:Fuerteventura;2-Willibaldianaschmitzin.sp.8Spain:
Fuerteventura;3.-1/V.schmitzin.sp.8Spain:Fuerteventura.(PhotoK.Larsen).
WillibaldianapaasiKnudLarsennewspecies(Figs.1, one in each segment of abdomen - are much smaller
4,6) thaninthefollowingspecies.
Type material: Holotype male, Spain: Canary Islands, Description. Imago. (Figure 1) Wingspan 9-10 mm.
Fuerteventura, Jandia/ Beo. [Barranco] Esquinzo 25.9- Antenna fasciculate, strongly ringed white and black.
19.10.[20]02,leg. Paas,genitalslide3857$Knud Larsen, Labial palp two and a half the diameter of the eye,
coll.KL. whitish grey; second segment strongly scaled, spatula
Paratypes: Spain: Canary Islands, Fuerteventura, shaped; head rough scaled with white greyish tipped
Jandia/ Beo. [Barranco] Esquinzo 1(5 83-8.4.[20]01 leg. scales. Hind tibia whitish with more or less strongly
Paas, genital slide 2997(5' Knud Larsen; 1$ 23.7- blackish rings narrower closer to the tip of tibia; two
11.8.[20]02 leg. Paas, genital slide 3859$ Knud Larsen; pairs of rather long spurs. In hindwing vein M2 is
1(5 9.3-10.4.(20]02 leg. Paas; 2(5 12-28.2.[20]03 leg approaching basallyto CuAl and M3 is missing. Ground
Paas;1(54-12.3.[20]04leg.Paas.Paratypesincoll.KL. colour whitish suffused with irregular dark areas and
spots and also powdered with verysmall orange-yellow
Diagnosis. The species differs from the other scales.Thebasalblotchisdarkirregulardefinedfollowed
Willibaldiana species bythe much smaller size and the by a lighter area before some darker areas which are
more whitish/grey ground colour of the forewing. The reminiscent of the median fascia; apical fascia darker
drawingsare lessstretched towardsthetip ofthewing irregularspotted.Thereisa reminiscenceofaspeculum
than in the preceding species. In the malegenitalia the wherejusttheouterlineispresentbutonlywithavery
species differs by having general smaller genitalia with weeklineofleadenglisteningscalesandattheplacefor
smaller thorns and the hairs on the cucullus are much the inner spot there is a bright area. At costa several
less pronounced; aedeagus is more tipped and shorter; strigula darkand lightandfiveofthem are notdivided.
socii are bigger and the following species has a short Cilia are lightgreywith a darkdividing line. Hindwing is
uncus. In the female genitalia the two signa are very light grey unicoloured and the fringes are without a
small and notfunnel shaped.The sclerotised spiracles- dividingline.
Malegenitalia.Seegenusdescription.
ISSN0771-5277 Phegea41(3)01.ix.2013:51
Femalegenitalia.Seegenusdescription. Distribution.Thespeciesisonlyknownfromthetype
Biology.Onlytheflightdataareknown-Februaryto locality.Allthespecimensweretakeninalighttrap.
AprilandagainJulytoAugust. Etymology. The species is named after the kind
collectorDr.Paas,Germany.
V
4 5
Figs.4-5.GenitaliaofWillibaldianaspecies.4.-Willibaldianapaasin.sp.$gen.slide3857KL;5.-W.schmitzin.sp.<$gen.slide3856KL(PhotoT.
Garrevoet).
16.10.
Figs.6-7.GenitaliaofWillibaldianaspecies.6.-Willibaldianapaasin.sp.$ge1n0..1sl0i.de3859KL;7.-W.schmitzin.sp.$gen.slide3858KL.(PhotoT.
Garrevoet).
Fig.8AbdomenofWillibaldianan.genus,slide3856KLWillibaldianaschmitzi<$.(PhotoT.Garrevoet).
WillibaldianaschmitziKnudLarsennewspecies(Figs. [20]00 leg Paas, genital slide 2891(3' Knud Larsen;
2,3,5,7,8) 2<3' 1$ 7-8.2000 leg Paas, genital slide 3858$ Knud
Type material. Holotype Spain: Canary Islands, Larsen; 2$ 10-29.9.[20]01 leg. Paas; 5$ 25.9-
Fuerteventura, Jandia/ Beo. (Barranco) Esquinzo, 25.9- [20]02 leg. Paas; 1$ 1.8-10.9.2005 & 1(3 15-
10.10.[20]02 leg. Paas, genital slide 3856(3' Knud Larsen 31.10.2005leg.Paas.Paratypesincoll.KL.
coll.KL.
Paratypes: Spain: Canary Islands, Fuerteventura, Diagnosis. The species differs from the other
Jandia/ Beo. (Barranco) Esquinzo, 1$ 1$ 1-19.4.[20]00 Willibaldiana species by the much larger size and the
leg. Paas, genital slide 2892$ Knud Larsen; 1$ 3- lightyellowgroundcolouroftheforewing.Thedrawings
Phegea41(3)01.ix.2013:52 ISSN0771-5277
are stretched towards the tip of the wing and the whether they could be assigned to an already known
markings are ochreous to brown. In the male genitalia genusorwhethera newgenusshould beestablished. It
the species differs by having largergenitalia with many was also very extreme to see that the two species
thornsand hairsonthecucullus;aedeagusislongerand obviously belonged to the same genus in spite of the
slightly curved; socii are nearly absent and there is a differences in imagines, which later turned up to be
short uncus. In the female genitalia the two signa are rather slight. It was only last year that I had the
well developed,funnel shaped.Thesclerotized spiracles possibility to make a slide of the female of W. paasi
-oneineachsegmentofabdomen-arepronounced(fig. which convinced me ofthe close relationship between
8). thetwospecies.
Description. Imago. (Figures 2-3) Wingspan 14-15 The next question was to find out a reasonable
mm. Antenna are fasciculate, conical ringed ochreous position of the new genus Willibaldiana. Many of the
andslightlydarkerbrown.Labialpalptwicethediameter charactersinthegenitaliaseemto be lessdevelopedor
of the eye, whitish; second segment strongly scaled, reduced. The basal excavations of the valva and the
spatula shaped; head rough scaled and ochreous. Hind singlescaleringonthesegmentsoftheantenna,define
tibialightochreouswithtwopairsofratherlongspurs.In the genus into the family Olethreutinae. The opinion is
hindwingveinM2isapproachingbasallytoCuAlandM3 thatthecharacterswhichfollowdefinethegenustothe
is missing. Ground colour light ochreous suffused with tribeEucosmini:
irregulardarkerareas.Thebasal blotchisdarker,angled 1. The venation of the hindwing with M2
andwith asubbasal interfascia; a weekand interrupted approachingbasallytoCuAlandM3ismissing.
medianfasciaplusapostmedianfasciaarebothpointing 2. The presence of socii, although "reduced", and
towardsthetipofthewing.Theterminalareairregularly theslenderpedunculi.
brownspottedandthereisareminiscenceofaspeculum 3. Theshapeofthesignainbursa.
wheretheouterlineispresentbutonlywithaveryweek 4. Thegeneraldrawingsontheforewings,especially
lineofleadenglisteningscales;the innerspothasmany withmanycostalstrigula.
scattered blackscales and the inner line ofspeculum is 5. Thepresenceofaspeculumalthoughreduced.
present as a white stretched dot. At costa several
ochreousstriguladarkandlightandfourofthemarenot A character against this opinion is the shape of
divided,butcanconsistofseveralveryfinestrigulaanda aedeaguswhich is more likea Grapholitini, butasthere
costal fold reaching 2/5th of the length. Cilia are light are some Eucosmini species with an aedeagus of this
ochreous with a black dividing line interrupted in the type, e.g. Rhyacionia piniana (Herrich-Schaffer, 1851),
middle of the termen. Hindwing is light ochreous this factor should not dominate the ideas about the
unicolouredandthefringesarewithoutadividingline. taxonomie position. In fact the female genitalia of R.
Malegenitalia(Figure5).Uncussmall,flatandtipped; pinianahavesomecharacterswhichhaveaffinitiestothe
sociiveryweek,nearlynotpresent;tegumen broadwith females of Willibaldiana, especially the reduced
slender pedunculi; valva rather short and weak with a charactersinostium,etc.
roundedandstronglyhairedcucullus;atthedorsaledge
ofcucullusthreeormorelongpointedthornsasapartof Now,thenextquestion istodefinethe relationships
theareawiththornsoncucullus; aedeaguslong,equally inside the tribe Eucosmini. To give a proper answer to
broad,roundedandweeklysclerotised;vinculumstrong. that question a molecular examination of the species
Female genitalia (Figure 7). Papilla analis triangular, wouldbepreferable,butthatisbeyondthescopeofthis
short and hairy; apophyses stronger and rather short; paperandbeyondthescopeofmypossibilities.Thusthe
ostium very weekly developed or reduced; subgenital decision can only be of preliminary character. As there
sternite is weak and excavated around ostium; ductus aresomeaffinitieswiththegenusSalsolicolaKuznetsov,
bursalong,stronglysclerotisedfrombursatojustbefore 1960 both in imagines and male genitalia a relation to
ostium, where it is without sclerotisation and is this genus should be considered, but there are many
narrowing; bursa rounded with two big funnel shaped moredifferences.ThegenusRhyacioniaHübner, 1825 is
signaandsomewrinklesnearthebursa"neck". very diverse in the Mediterranean area with one
Biology. Onlythe flight data are known -April and endemicspecies in the Canary Islands (Rebel 1896) and
againJulytoOctober. the sister group Clavigesta Obraztsov, 1946 (Larsen
Distribution.Thespeciesisonlyknownfromthetype 2010) has its main evolutionary area in the
locality.Allthespecimensweretakeninalighttrap. Mediterranean, and this genus also has reduced
Etymology.Thespeciesisnamedaftermygoodfriend characters(Obraztsov1946) likethenewgenus. I would
andproviderofthespecimensWillibaldSchmitz. not be surprised if a more close investigation would
reveal a common ancestor to these three genera. A
preliminary position of Willibaldiana is proposed to be
SystematicpositionofWillibaldiananew after the genus Clavigesta Obraztsov, 1946 as the last
genus genusinEucosmini.
From thefirstsight, some years ago, it was obvious The number of Tortricidae found on the Canary
that these two species were new to Science, but the Islandsis48(Aarvik2013).Withthetwonewspeciesthe
genital characters made it very difficult to find out numberincreasesto50.
ISSN0771-5277 Phegea41(3)01.ix.2013:53
Acknowledgements input to the discussion about these species. Willy De
Prins (Leefdaal, Belgium) has made the "samenvatting"
Theo Garrevoet (Antwerp, Belgium) has taken the andthe"résumé"and helpedwiththemanuscript. am
I
photographsofthegenitalslides,whichIappreciatevery gratefultoallthementionedpersonsfortheirhelp.
much. Leif Aarvik (Oslo, Norway) has given invaluable
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