Keilbachia americana, Kauschke, 2017

Kauschke, Ellen, 2017, New Black Fungus Gnats (Diptera, Sciaridae) of North America. Part IV. Genera Eugnoriste Coquillett and Keilbachia Mohrig, Zootaxa 4319 (1), pp. 53-76 : 67-68

publication ID	https://doi.org/ 10.11646/zootaxa.4319.1.3
publication LSID	lsid:zoobank.org:pub:Bc01A8D7-6Bd7-4409-Bddc-E6Ebfd3C6E64
DOI	https://doi.org/10.5281/zenodo.6003944
persistent identifier	https://treatment.plazi.org/id/03994403-4F11-6D55-388A-FF4EFC885503
treatment provided by	Plazi
scientific name	Keilbachia americana
status	sp. nov.

Treatment

Keilbachia americana View in CoL sp. n.

( FIg. 9 View FIGURE 9 A–C)

Locus typicus: USA, Oregon, Multnomah County, Multnomah FallS . Holotype: Male, 26.vI.1974, leg. P. H. Arnaud ( PWMP).

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 Camp ground, 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).