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