j;,/i"j:'/Aeprinted from
PnocEEDrNcsoF TI]! ENrouor,ocrcel SoctETyoF IMAsInNcToNVol. 79, No. l, January 1977
Made in United Statesaf Anerica
A NEW SPECIES OF ERIOPTERINE CRANE
FLY FROM ECUADOR (DIPTERA! TIPUI,IDAE)
CTTARLES P. ALEXANDER

39 Old Torvn Road, Amherst, lvlassachusetts01002
ABSTRACT-Ertoprerc(E optera) alanstonei is described {rom Ecuador.

I am honored in being invited to contdbute an article to the seriesof papers being prepared to commemorate the retirement of Dr, AlanStone. He will long be remembered for his outstanding papers in theorder Diptera and similarlv for the kind advice and assistance extended to many students o{ flies. I express my gratitude to him forassistance on many occasions throughout the years.
For this paper I have selected an interesting species of the genus
Erioptera {rom Ecuadol and have given the rame alnnstonei lo tl:risfly. The t4res of the novelty are placed in the Alexander Collectionof crane flies that will be deposited in the United States National
Museum rvherc Dr. Stone spent much o{ his life while studying tleDiptera.
Efioptera (Eriapterc) alanstonei Alcxander, new species
Ceneral coloration of thorax obscure yellorv, praescutum witb 4 dark brownstripes, intermediate pair united rvith laterals xt theft anterior ends, pleura darkbrown with broad silvery longitudinal stripe; knobs of halteres brorvn; legs yelIorv, fernora with narrow blackened subterninal dng that is about 3 times aslong as pale apex; wings airnost unilormly brownislr orange, variegated by yellow
and slightly more darkened areas; veins pale, diflicult to distinguish against theground; abdomen dark brorvn; nale hypopygium with 2 terminal &stistyles,
outer one deeply forked, inner style simple; phallosome with gonapophyses
appeadng as long narrorv yellorv blades, narrowed gradrrally to acute tips.
Male, length about 5-5.5 mm; wing 5-6 mm; antenna about 0.9-1.0 mm.
Female, length about 6 mm; rving 5 mm.
Rostrum, palpi and antennae black; flagellar vefticils long, head brorvn.
Pronottlm and pretergites yellow. Mesonotal praescutum obscure yeilow with
4 conspicuous dark broum stripes, longer intemlediate pair about 7: broader
than median ground line, united at anterior ends with shortcr lateral stripe;
scutal lobes pale with dark brorvn median and lateral areas; scutellum andpostnotum obscure yellow. Pleura dark brown, rvith broad silvery longitudinalst pe extending frorn behind fore coxa to abdomen, dorsally bro:rdly borderedby brownish black, ventr:rlly with narrower dark brown line that involves dorsal
sternopleudte, meron rnd metapleura, ventnrl stemopleurite light bror,rn,ishgray;dorsopleural region broadly pale. Haltercs with stem whitered, knob brown.
Legs with fore coxae darkened, r'emaining coxae and all trochanters pale; lemora
yellorv rvith single broad blackened subterrninal ring that is about 3 times as
extensive as pale apex; tibiae and tarsi yellow, outer segnrentsof latter slightly
darkened. Wings ({ig. 1) almost uniformly brownish orange, prearcular and11ffi
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