Revision Of The Nearctic Species Of The Genus Amiota Loew (Diptera: Drosophilidae) Author Jones, Lance E. Author Grimaldi, David A. text Bulletin of the American Museum of Natural History 2022 2022-09-15 2022 458 1 181 https://bioone.org/journals/bulletin-of-the-american-museum-of-natural-history/volume-458/issue-1/0003-0090.458.1.1/Revision-of-the-Nearctic-Species-of-the-Genus-Amiota-Loew/10.1206/0003-0090.458.1.1.full journal article 218234 10.1206/0003-0090.458.1.1 9aaee2d0-a89e-47d4-8578-cdd525f7ebfb 0003-0090 7400026 Amiota tibialis , sp. nov. Figures 47C–D , 48B , 50 , 90C DIAGNOSIS: Large fly (ThL 1.63–1.79 mm ), black; cheek very deep; middle tibia with comb of ~12 setae; hind tibia with comb of ~8 setae; male genitalia distinctive, heavily sclerotized and complex: aedeagal apodeme deeply lobed with lateral pockets; subepandrial sclerite with large, curved appendage having 2 distal valves, each valve bearing a serrated distal edge with a proximal large spine; similar to Amiota byersi but significantly differing in the subepandrial appendage. DESCRIPTION: Large fly (ThL 1.63–1.79 mm ), black, legs yellowish. Frons dark, slightly lighter ventrally, pollinose. Cheek deep (EL/CW 0.07– 0.09mm ), whitish-gray. Middle tibia with comb composed of ~12 setae (length of longest setae ~0.7× width of tibia). Hind tibia with comb composed of ~8 setae (length of longest setae ~0.7× width of tibia). Tergites 1 and 2 lightly colored. Arista: Short, plumose; longest branch D3; A.R. 0.30; 5 long dorsal, 3 shorter ventral branches, none pointed medially/laterally; arista trunk with short microtrichia, bare on apical half. Male genitalia: Epandrium dorsally incomplete in middle. Cercus distinct from surrounding membrane, each crescentic. Surstylus with lateral thumblike projection, 9 prensisetae, apices blunt, comblike, becoming slightly smaller medially. Subepandrial sclerite complex, forming a semicircle, each half with ostium and 4 anteriorly facing lobes; an elaborate heavily sclerotized appendage present, heavily sclerotized, arching ventrally and the apex directed posteriorly; apex with pair of serrated valves, in lateral view with 2 prominent spines, flanked above and below with smaller serrations; each subepandrial appendage in ventral view flanked by a faintly striated membranous sac. Outer paraphysis long and acuminate, no visible sensilla, oriented posteroventrally, bent ~ 90° at base. Inner paraphysis slightly sinuous and pointed anterolaterally. Aedeagal apodeme very distinctive, length and width nearly equal, scalloped, deeply lobed and bent in lateral; prominent lateral lobes forming scoop, constricted on all 4 sides and concave in dorsal view; no obvious flanges. Hypandrium thick, heavily sclerotized; lateral arms thick coming to a very wide gonopod, nearly triangular; apex a strong mucronate point ventral to aedeagal apodeme. Ejaculatory apodeme long, length slightly shorter than depth of epandrium; bent near middle of shaft, heavily sclerotized. Head and thorax measurements: (n = 5; Am 7, 470, 482, 489, 556) FL/FW 0.65 (0.55–0.72), EL/EW 1.46 (1.37–1.54), EL/ CW 10.30 (8.77–11.71), FML/FMW 0.39 (0.35– 0.43), PR /RR 0.54 (0.50–0.72), ThL 1.73 ( 1.63– 1.79 mm ). FIG. 45. Male terminalia, A. leucostoma Loew. A –B, F–G. A. Ventral view. B. Ejaculatory apodeme. F. Lateral view. G. Surstylus. (Am 379). Male terminalia, A. mcalpinei , sp. nov. C–E, H. C. Ejaculatory apodeme. D. Inner paraphyses. E. Ventral view. H. Hypandrium and gonopod, lateral. (Am 1315, holotype). FIG. 46. Male terminalia, A. tessae . A. Epandrium and cerci. B. Ejaculatory apodeme. C. Lateral view. D. Aedeagal apodeme. E. Sternite 6 (shaded) + 7. F. Ventral view. G. Surstylus. (Am 721). TYPE MATERIAL : Holotype : male: UTAH , Cache Co , Logan Cyn [canyon], Turner CG [campground], [ 41.883204 , -111.572736 ], 10–20 Jun 85, W.J. Hanson , Am 470, [reglued directly pin, dissected]. Deposited in the American Museum of Natural History ( AMNH ) . Paratypes : UTAH , Cache Co , Logan Cyn [canyon], Turner CG [campground], 5–17 Jul 85, W.J. Hanson , 3♂ ( Am 472, 481, 482*, LACM ) ; 20–27 Jun 85, W.J. Hanson , 1♀ ( Am 483) ; 27 Jun –5 July 85, W.J. Hanson , 3♂ ( Am 475, 478, 489*, LACM ) . OTHER MATERIAL EXAMINED : Canada : Ontario : Low Bush , Lake Abitibi , 1925-08-08 , leg. N.K. Bigelow , 3♂ ( Am 1352*, 1353, 1354*, CNC ) ; Petawawa Reservation , 1935-06-26 , leg. D. Gray , 1♂ ( Am 556*, DEBU ) . Saskatchewan : Mankota , 1952- 01-30 , [collector unknown], Prob ex. Tort. In apple fungus ( Daldinia grandis ), 1♂ and 1♀ ( Am 1350, 1351*, CNC ) . USA : Utah : Cache Co. , W. Hodges Canyon , 1978-08-15 through 1978-08-21 , leg. Knowlton and W.J. Hanson , 1♂ ( Am 495*, LACM ) ; 1985-07-18 through 1985-07-23 , leg. W.J. Hanson , 2♂ ( Am 485*, 486, LACM ) ; 1985-07-23 through 1985-08-03 , leg. W.J. Hanson , 1♂ ( Am 488, LACM ) ; 1985-08-16 through 1985-08-30 , leg. W.J. Hanson , 1♂ ( Am 473, LACM ) ; 12 mi W Long Junction , Dixie N. For. Ut. , 1953-08-18 , leg. W.B. Heed , 1♂ and 1♀ ( Am 1*, 6*, AMNH ) ; 1953-08, leg. W.B. Heed and F.A. Cowan , 2356.4, 1♂ ( Am 7*, AMNH ) . ETYMOLOGY: From tibia , Latin for “leg,” in reference to the tibial comb on the hind leg. DISTRIBUTION: Amiota tibialis is known from Utah, specifically the Wasatch and Uinta Montane Forests which stretch from north to south in the state, as well as eastern and central Canada . COMMENTS: Of note are the two specimens from Saskatchewan (CNC) found to be associated with apple fungus, Daldinia grandis Child. Amiota alboguttata (Wahlberg) has been reared from Daldinia concentrica ( Bolton ) Ces. and De Not. in the United Kingdom ( Buxton, 1960 ; Hingley, 1971 ).