Homoneura grandis (Kertész, 1915)

Papp, L. & Gaimari, S. D., 2013, The Holotype Of Homoneura Grandis (Kertész, 1915) With Description Of A New Species From Taiwan (Diptera, Lauxaniidae), Acta Zoologica Academiae Scientiarum Hungaricae 59 (1), pp. 31-39 : 34-35

Homoneura grandis (Kertész, 1915)

(Figs 1–3, 7–8, 11, 13–14, 16–18)

Lauxania (Minettia) grandis Kertész, 1915: 529 , Fig. 15 [malegenitalia, lateral]. Typelocality : Taihorinsho [=DalinTownship, ChiayiCounty, Taiwan] VIII. 1909.

Holotypemale ( HNHM): 1) FormosaSauter; 2) Taihorinsho, 1909. VIII.; 3) [Kertész’s handwriting] “Laux. MinettiagrandisKert.” [red] “typus” det. Kertész; 4) [Kertész’shandwriting] “ L. Min. grandisn. sp. № 9”; 5) [redmargined] Holotypus “ L.(Minettia) grandis Kertész, 1915 [L. Papp’ shandwriting] – [onthereverseside] “labelledbyL. Papp, B.l. 6.95 mm ”. Theholotypeisinagoodstateofpreservation. Itisona 0 sizepin; abdomenwith genitaliahasbeenremovedandprepared, andnowiskeptinamicrovialwithglycerolon thesamepin. Itsrightwingisdamaged: asmallpieceislostfromuppersubapicalmargin. Itsrightforelegwithcoxaeandventralpartsofthoraxbelowhead, aswellasclypeuswith a part of proboscis and lower 1/6 of eye had been eaten by Anthrenus larvae .

Measurements of the holotype in mm: body length 6.95 (vs Kertész’s 6.8), wing length 6.90 (vsKertész’s 6.78), wingwidth 2.70. (Thatis, Kertészwasquitepreciseatmeas- urements.)

Longestaristalrays 0.22–0.23 mm. SubapicalbrownspotsonR 2+3, R4+5 andM1+2 are notconfluent, thoughareasbetweenthemslightlydarkerthanmembraneelsewhere.

Malegenitalia. Cercus (Fig. 2) slightlymoreprotrudingthanin H. pseudograndis (this maybeacharacteristicofthespecimenpreservationonly), someofitssetaelongerthan 0.3 mm. Hypandrium (Figs 7–8) stronglyasymmetrical, itsapodemeshortandrounded; lefthalfwithacomparativelyshortslightlymedio-clinateprocesswithsmalldoublebasal teeth, medialtoothemergesfarfromleftprocess (Fig. 8); rightprocessstraight, strongly mediallydirectedwith 3 basalandsub-basalteeth. Surstyluswithlessbroadbase, cau- dalextensionnarrow; outer (lateral) surface (Fig. 1) withsomelongmarginalsetaeand severalshortandthinneradditionalsetae, inner (medial) surface (Fig. 3) withshorttriangular, mostlysharp, pegsonits ¾ length. Postgonites ( Figs 13–14 ) in 3 processes: direct connectionofphallapodemetothemedialprocessonly ( Fig. 13 ), lateral (double) process connectedtophallapodemethroughmembranes. Innerprocessalmoststraight, shorter thanmedialarmofthelateralprocessesandonlyslightlylongerthanhalfofthatof H. pseudograndis , lateralpairofprocesses ( Fig. 14 ) withabroaderandslightlyshortermedial armandathinnerlongerlateralarm. Phallus (Fig. 11) morecurvedinlateralviewthanin H. pseudograndis , apical 1/3 higher, basesharpenedinlateralview. Phallapodemeshorter andmorecurvedthanin H. pseudograndis .

Additionalspecimens ( HNHM): 1 male 3 females: FormosaSauter – Kankau 1912. V. – „grandisKert.” det. Kertész. Rightwingofoneofthefemalesismissing. Probablythat wasusedtomakeawingspecimenonslide; however, nosuchwingspecimenwasfound inKeRtész’ sbequest .

Figures

Figs 13–15. Homoneura species, malegenitalia. 13 = H. grandis (Kertész, 1915), holotype, phallapodemeandpostgonite, overall, slightlysublateralview. 14–15 = phallapodemeand postgonites, ventral view: 14 = H. grandis (Kertész, 1915), holotype, 15 = H. pseudograndis sp.