New Black Fungus Gnats (Diptera, Sciaridae) of North America. Part IV. Genera Eugnoriste Coquillett and Keilbachia Mohrig
Kauschke, Ellen
Zootaxa
2017
2017-11-11
4319
1
53
76
8CFTJ
Kauschke, 2017
Kauschke
2017
[151,417,221,247]
Insecta
Sciaridae
Keilbachia
Animalia
Diptera
14
67
Arthropoda
species
americana
sp. nov.
Locustypicus: USA, Oregon, Multnomah County, Multnomah FallS. Holotype: Male, 26.vI.1974, leg. P. H. Arnaud( PWMP). FIGURE 9. Keilbachia americana sp. n.Male. Holotype. A. Gonostylus, ventral vieW. B. Antennal flagellomeres 3–4. C. ApeX of fore tibia. Paratypes: 1 male, 24.vI.1974, USA, Oregon, MarIon County, SIlver FallS State Park, North FallS, SIlver Creek, leg. P. H. Arnaud( PWMP); 1 male, 14.vII.1974, Canada, BrItISh ColombIa, GlacIer NatIonal Park, MountaIn Creek Campground, leg. P. H. Arnaud( CAS). Description. Male. Head. Eye brIdge 3 facetS wIde; antennae brown; 4th flagellomere wIth l/w-IndeX of 2.0, wIth haIrS aS long aS the dIameter; neck rather long. PalpuS 3-Segmented, the fIrSt Segment wIth one brIStle and wIthout SenSory pIt. Thorax. BrownISh, coXae and femora paler; Scutum wIth rather long haIrS; poSterIor pronotum bare. WIngS pale; R1 = 2/3 R; c = 2/3 w; y Shorter X; y wIth 1–2 macrotrIchIa; poSterIor wIng veInS weak, wIthout macrotrIchIa. Haltere Short, knobS brownISh. LegS Somewhat paler than thoraX; tIbIal organ of the fore tIbIae wIth a horSeShoe-lIke patch of brIStleS; SpurS of the mIddle and the hInd tIbIae longer than the apeX of the tIbIa wIde. ClawS wIthout teeth. Abdomen. HypopygIum wIthout an IntergonocoXal lobe or patch of brIStleS; the ventral Inner margIn of gonocoXIteS wIth SparSe and Short haIrS; gonoStyluS concaved at the Inner SIde, wIthout an apIcal tooth, but wIth one hyalIne SpIne and two long whIplaSh-lIke brIStleS; In the mIddle of the Inner SIde wIth a rather Short and Strong SpIne on a large baSe, curved upwardS. Tegmen trapezoId, Shouldered wIth fIne teeth and a rather long aedeaguS. Body length: 2.0 mm.
Comments. The SpecIeS IS characterIzed by the abSence of an apIcal tooth on the gonoStyluS. InStead It bearS SubapIcally one hyalIne SpIne and two long whIplaSh-haIrS aS well aS a rather Short and Strong SpIne at the Inner SIde wIth a large baSe wIthIn the Inner concavIty.
Distribution. USA( Oregon); Canada(BrItISh ColombIa).
1632929412
1974-06-26
PWMP
Male & P. H. Arnaud
United States of America
Multnomah County
Multnomah FallS
Locus
14
67
1
Oregon
holotype
1632929413
1974-06-24
PWMP
State Park & Creek & P. H. Arnaud
United States of America
MarIon County
North FallS
14
67
1
1
Oregon
paratype
1632929416
1974-07-14
CAS
P. H. Arnaud
Canada
MountaIn Creek Camp
14
67
1
1
paratype