Odonatologica22(2): 197-201 June I.1993 Progomphuszephyrus Needham from the Dominican Republic, West Indies: description of adult male (Anisoptera: Gomphidae) J.J.Daigle DepartmentofEnvironmental Regulation,2600 BlairStoneRoad, Tallahassee, Florida32399-2400,United States Received December 16,1992/AcceptedJanuary 27, 1993 The sp.washithertoknown fromthe larva only.Adetailed descriptionandfigsof theadultmalearepresented,and somefieldnotes areprovided. Theadultfemale still remains unknown. INTRODUCTION In 1941,NEEDHAM describedProgomphus zephyrus from larvaehecollected in the DominicanRepublic. No larvaewere reared to adults duringhis tripand he did not collect any adults. Recently, four adult males suspected to be P. zephyrus were collectedthereby Dr S.W. Dunkle and myself. Two adult males identifiedas P. serenus Hagen werekindly sent to me by Dr O.S. Flint, United States NationalMuseumandDrM.J. Westfall, FloridaStateCollectionofArthro- pods. Upon examinationthesespecimens proved identicalto thefour suspected P. zephyrus. Ibelieve the specimens describedhere are P.zephyrus because itis very likely there are only two species of Progomphus on Hispaniola, and P. zephyrus is the bestavailable name. BELLE(1992)describedateneralfemaleand anexuviaefromtheDominican Republic as Progomphus zephyrus. With the permission ofthe collector, R.W. Garrison,Iexaminedthat teneralfemaleandtheexuviae, plus two other teneral femalesandonemale. Allthe materialwas collectedfrom theRioInoa on June 5, 1987. I have determinedthe four adults to be P. serenus. Icompared the Rio Inoa teneralfemales with both a mature and ateneral P. serenus sent to me by Sidney W. Dunklefrom two other DominicanRepublic 198 J.J. Daigle localities.Thethoracicpatterns ofall the examinedfemalesare similiarto each other.They are consistent withthe thoracic pattern ofmaleP. serenus. I believe thefemaleP. zephyrus thoracic pattern willresemble that ofthemale. Also, all the examinedfemales had an elevation or tuberclebetween the lateralocellus and theeye border. Theexuviae was collectedseveral inchesaway fromthe teneralfemale.How- ever, the exuviae is not P. serenus! The shape of the slender third antennae segment resembles thatofP. zephyrus. I have a larva ofP. serenus taken from the wide, shallow Rio Camu in the Dominican Republic. This larva has the unique globose, inflatedthirdantennae segment ofP. serenus. P. serenus adult males were veryabundanton theRioCamu,perching on the sandbars or nearby rocks. However, 1 did not collect any P.zephyrus on the RioCamu. Isuspect thattheemergenceoftheP.zephyrus occurred beforethethreeteneral P. serenus, possibly the day before. No other exuviae were found near them at that RioInoasite. I have collectedboth species together atthe Arroyo Bermejo. Therefore,Ibelievetheteneralfemaleanditssuspected exuviaearenotassociated. Progomphus zephyrus appears toberestricted to theDominicanRepublic and possibly Haiti. P. serenus is also known only from these countries. A closely related species, P.integer Hagen is known only from Cubaand Jamaica. PROGOMPHUS ZEPHYRUS NEEDHAM, 1941 Figures 1-7 Material. — DOMINICAN REPUBLIC, Distrito Nacional, ArroyoBermejo,4 km NNE of Hatillo, 3-VI-I989, J.J.Daigleleg., 2 6,(JJD andSWDcollections); — samelocation, 29-V-I99I, S.W.Dunkle leg.. I 6,(SWDcoll.); — La Vegaprov.,ArroyoAnaMarie, 10.9km SWofAutopista Duarte onroad to Jarabacoa, ongrounds of "Centro Vacational Turisto Racquet Club” about 0.7 kmNofentrance, 9-VI-1989, JJDleg., 1 <J, (JJD coll.); - LaVegaprov.,nrJarabacoa, 4-VI-1969, O.S,Flint. & J.Gomez leg., 1 d,(USNM coll.); — San Cristobalprov,. LaTomaN ofSan Cristobal, 9-VI-I969,OSF & JGleg,. 1 d, (FSCAcoll.). Dimensions (mm). - Total length includingcerci 40-42, abdomen 30-32, and hindwing 23-24. Head. — Eyes in life darkblueabove, grayish blue below;antennae black. Labrumgrayish whitewithblack basalmedianspot widenedbasally; anteclypeus grayish white,postclypeus black,faciallobesextensively white(Fig. 1).Antefrons black,postfrons grayish white,frontalfurrowblackbasally. Vertexblack,grayish or grayish-brown posteriorly; occiput gray margined with black. Occipital ridge black; rear ofheadblack with dark yellow spot belowoccipital ridge. Thorax. — Prothorax black except middle lobe cream-white with black median furrow. Pterothorax black with cream-white stripes; middorsal carina white, antealar crest black. First pale antehumeralstripe much reduced and not connected to pale mesothoracic collar; second pale antehumeral stripe nearly AdultmaleofProgomphuszephyrus 199 Figs 1-7. ProgomphuszephyrusNeedham, 6:(I)face, frontal view; — (2)thoracic pattern; — (3) posterior hamules, ventralview; — (4) posteriorhamule, lateral view; — (5) appendages,dorsal view; — (6) appendages,lateral view; — (7)appendages,ventral view. full-length andnotjoined withother pale stripes (Fig. 2). First pale lateralstripe very thin anteriorly, thenwideneddorsally. Widesecondpale lateralstripe inter- rupted dorsally, third pale lateral stripecomplete; sternum light brown. Legs. — Femorabrownwith pale flexorarea, kneesblack. Tibiae,tarsi, and claws black. Wings. — Hyaline, some brown in extreme base; costa blackish-brown. Forewing with 14-16antenodalcrossveins, 9-12postnodals; hindwing with 10- 200 J.J. Daigle -12 antenodals, 10-13 postnodals. Basal subcostal crossvein present (rarely 2). Triangles 3-celled(rarely 2), subtriangles 2-celled in all wings. Blackish-brown pterostigma surmounting 5-7 cells. Abdomen. — Black withthin, whitebasal rings. Segment 1 with afinger- -like ventral projection, tergite blackish brown with mid-apical brown spot and dull yellow ventral areas basally. Segment 2 blackish-brown with pale dorsal stripe; auricleandposterior lateralspotobscure yellow,genital foldwhite.Poste- riorhamulesstoutwith 5-6black basoventral tubercles, darkbrown basally, pale mid-ventrally, then black with hook glossy black (figs 3-4). Anterior hamules brown,aboutas high as shoulderofposterior hamules.Hoodofpenis darkbrown, cupped anteriorlytoreceive penisflagellae. Segment 3black withthin, interrupted dorsal stripe; small whitebasaltriangle laterally. Segments 4-6 black with thin, whitebasal rings, occasional white mid-dorsaldot and lateroventralwhite dot. Segment 7black withthinwhitebasalringwidening laterally,pale mid-lateroven- tralspot.Segment 8 withlarge yellowish mid-lateroventralspot.Segment 9black with smallmid-lateralbrown spot. Segment 10black. Appendages. — Superior appendages black, occasionally pale at apical third with sharp acuminatepoint (Figs 5-6). Inferiorappendages curved inward when viewed ventrally (Fig. 7), tips bluntly bilobed without any sharp teeth; supero-extemal tooth broadly blunt with two rounded tubercles. FIELD NOTES Inthefield, thedarkermaleProgomphus zephyrus canbe separated from the palerP. serenus bythereducedfirstpale antehumeralstripe whichdoesnotreach the pale stripe onthe collar. The anterior portion ofthe first pale lateral stripe is very thin,almost invisibleinP.zephyrus. In contrast, thisstripe is muchwider throughout itslength inP. serenus. Theblack postclypeus areas are morereduced in P. zephyrus and donot resemble the black ”goggle-eyes” look ofP. serenus. P. integer hasa white-spotted thoracicpattern insteadofthepale striped pattern foundinP. serenus andP.zephyrus. Also,P. integerhasa distinctivepale crescent onthe metepimeron. NEEDHAM’s (1941) description of P. integer larvae from the Dominican Republic is sosimiliarto P. zephyrus larvae, Ibelieve them tobe the same; so only serenus and zephyrus occur on Hispaniola. The habitatappears to be theheadwatersofsmall, forested montane streams. All theobserved males perched inconspicuously onstreamside shrubs or rocks back in theshade, never onrocks in themiddleofsunny, openstreams orrivers like P. serenus. Companion odonateswere Hypolestes trinitatisGundlach,Proto- neura viridis Westfall, Telebasis vulnerata Hagen, and an occasional Aeshna psilus Calvert and ProtoneuradunkleiDaigle at theArroyo Ana Marie site. A femaleProgomphus was observed ovipositing over a shallow gravel riffle Adultmale ofPrngomphuszephyrus 201 area in the Arroyo Ana Marie before escaping into the trees. No larvae were founddespite extensive sifting thereand elsewhere in the seepagestream. The P. zephyrus exuviae site (BELLE, 1992)was a 50-60foot wide shallow stream at 480 meters elevation, according to the collector. Dr R.W. Garrison (pers. comm.).Furthercollecting inthe hillsofHispaniola shouldreveal moreexuviae, larvae andadults ofthis elusive Caribbeangomphid. ACKNOWLEDGEMENTS Iwish tothank DrSIDNEYW.DUNKLE,DrROSSERW.GARRISON,Dr KENJ.TENNESSEN, and Dr MINTER J.WESTFALLforreview and comments. REFERENCES BELLE, J., 1992.Studies onultimateinstar larvae ofneotropicalGomphidae,with the description ofTibiagomphusgen.nov.(Anisoptera).Odonalologica21(1): 1-24. NEEDHAM, J.G.,1941. Life historystudiesonProgomphusanditsnearest allies(Odonata:Aeshni- dae). Trans. Am. ent.Soc.67: 221-245.