Eulonchus marialiciae
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Ordo: Diptera
Familia: Acroceridae
Genus: Eulonchus
Name
Eulonchus marialiciae Brimley, 1925 – Wikispecies link – Pensoft Profile
- Eulonchus marialiciae Brimley, 1925: 77
References
Brimley 1938[1]: 335 (North Carolina); Sabrosky 1948[2]: 388 (key ref.); Schlinger 1965[3]: 404 (catalogue); Coyle 1971[4]: 281 (host Antrodiaetus unicolor, distr.); Poole 1996[5]: 36 (checklist); Adler et al. 1997[6]: 190 (biology, abundance).
Common name
Mary-Alice’s Emerald.
Diagnosis
Antennal flagellum elongate, basally broad and flattened laterally; proboscis straight, relatively short (~half body length); ocellar tubercle trifurcate; legs yellow; calypter margin brown; body colour metallic green.
Redescription
Body length: 9.9–12.0 mm, Wing length: 9.1–10.2 mm. Head. Flagellum dark brown, male flagellum laterally compressed and variable in amount of distal tapering, longer than head height (pendulous in pinned specimen); scape and pedicel light brown to yellow; clypeus elongate, extending beyond oral cavity, rounded with raised ridge dorsally, surface black-brown, glossy with sparse pubescence; labial palp brown or yellow, length not extending beyond proboscis at point of attachment; margin of oral cavity (parafacial) glabrous or pilose, admixed with pubescence; proboscis straight, shorter than thorax or reaching middle of abdomen; ocellar tubercle trifurcate with processes relatively short and subequal (posterolateral processes often rounded), tubercle height shorter than width; median ocellus present; occiput metallic green-blue or blue, pile densely white or yellow. Thorax. Metallic green, blue or purple, setal pile yellow; coxae black with metallic blue and/or green sheen; femora yellow; tibiae dark yellow; tarsi dark yellow; calypter margin brown, membrane translucent, with suffused brown marginally; haltere stem dark brown, knob lighter brown. Abdomen. Metallic green or blue-violet, vestiture yellow, dominant setae erect. Male genitalia (Figs 17C, 18C, 19C). Epandrium ovate, thinned at the apex, with posterior margin straight; gonocoxite taller than wide, with broad fenestrae; aedeagus broad at the apex, bilobate in posterior view, not heavily sclerotized laterally.
Type material examined
Holotype male, USNM, “Andrews Bald/ IVIT.5 700ft/ Swain Co N.C./ VI.26.23” [white]; “JC Crawford/ Coll” [white]; “Type No./ 55797/ U.S.N.M.” [red]; “Eulonchus/ marialiciae/ TYPE Brimley” [pink]; specimen condition: poor, all legs missing except left front and right mid leg, right wing missing, abdomen and a leg glued to a paper triangle on pin. Body length: ~12.0, (this is an approximation due to the disarticulation of the specimen), wing length: 10.2 mm.
Other material examined
Listed in Table 3 (Suppl. material 1).
Distribution
(Fig. 20). Nearctic: North Carolina: Great Smoky Mountains: Macon, Swain and Hayward Counties (USA).
Ecology
Flowers visited: Rosaceae: Rubus canadensis L., Rubus sp. (Table 2).
Biology
Host: Antrodiaetus unicolor (Antrodiaetidae) (Schlinger 1987[7]).
Comments
Eulonchus marialiciae is the only disjunct species in the genus, with a relatively small distribution in the Great Smoky Mountains of North Carolina (USA); all other species are found in contiguous distributions in the far western part of the continent. This species is the sister species to the north-western Eulonchus sapphirinus and both have characteristic bright green metallic colouration, short proboscis, yellow legs and similarities in the male genitalia shape. Eulonchus marialiciae has the shortest proboscis of any species in the genus, as well as a much more elongated and laterally compressed flagellum.
Taxon Treatment
- Borkent, C; Gillung, J; Winterton, S; 2016: Jewelled spider flies of North America: a revision and phylogeny of Eulonchus Gerstaecker (Diptera, Acroceridae) ZooKeys, (619): 103-146. doi
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Other References
- ↑ Brimley C (1938) The Insects of North Carolina, being a list of the Insects of North Carolina and their close relatives. The North Carolina Department of Agriculture and Consumer Services, Division of Entomology, Raleigh, 560 pp.
- ↑ Sabrosky C (1948) A further contribution to the classification of the North American spider parasites of the Acroceratidae (Diptera). The American Midland Naturalist Journal 39: 382–430. doi: 10.2307/2421592
- ↑ Schlinger E (1965) Acroceridae. A Catalog of the Diptera of America North of Mexico, 403–407.
- ↑ Coyle F (1971) Systematics and natural history of the mygalomorph spider genus Antrodiaetus and related genera (Araneae Antrodiaetidae). Bulletin of the Museum of Comparative Zoology 141: 269–402.
- ↑ Poole R (1996) Diptera, Lepidoptera, Siphonaptera. Nomina Insecta Nearctica. A checklist of the insects of North America. Vol. 3. Entomological Information Service, Rockville, 1143 pp.
- ↑ Adler P, Reitz S, Watson C (1997) Distribution and abundance of Eulonchus marialiciae (Diptera: Acroceridae). Entomological News 108: 190–192
- ↑ Schlinger E (1987) The biology of Acroceridae (Diptera): True endoparasitoids of spiders. In: Nentwig W (Ed.) Ecophysiology of Spiders. Springer-Verlag, Berlin, 319–327. doi: 10.1007/978-3-642-71552-5_24
