Revision of Milichiella Giglio-Tos (Diptera, Milichiidae) 2188 Brake, Irina Zootaxa 2009 2009-08-06 2188 1 1 166 Brake 2009 [151,275,1234,1260] Insecta Milichiidae Milichiella Animalia Diptera 71 72 Arthropoda species faviformis  Distribution: Washington to Maryland, south to Venezuelaand northern Chile.    Milichiella brevirostrisBrake, sp. n.(Pl. 13B, C, I) Diagnosis. Differs from congeners in the combination of yellow halter, light brown calypter, male T2–5 silvery microtomentose except for shiny black posterior half of T5, and face not protruding. Description. Body length: 1.6–2.3 mm; wing length: 2.0 mm. Male coloration and vestiture: frons subshiny black, ocellar triangle and upper orbital plates shiny black, lunule black, basoflagellomere black, face brown microtomentose, palpus black; thorax with mesonotum shiny black, scutellum microtomentose, sometimes shiny in middle, pleuron mostly shiny black, only dorsally slightly microtomentose, wing hyaline, veins light brown, brown spot at apex of vein R1 absent, calypter light brown, halter yellow, legs black except for yellow mid and hind basitarsus; abdomen with T2–5 silvery microtomentose except for shiny black posterior half of T5. Female coloration and vestiture: halter yellow, abdomen with T1–4 brown microtomentose, T5 shiny. Head: frons with 2 orbital and 2 frontal setae, anterior frontal seta slightly medioreclinate. In males frons 2.2x as wide at posterior margin than at base of antenna, arista about 4.7x as long as basoflagellomere width, pubescence on arista very short, posterior eye margin with narrow notch (3om) and emargination (1–2om). Thorax: 2 dc, 1 prsc, 1 pprn, 1 prs, 2 keps setae, posterior prsc less than 0.8x as long as posterior dc, seta between posterior prsc and posterior dc absent. Wing with veins R 4+5and M convergent (1.8); M-ratio is 2.0. Fore femur normal setulose, tibial organ absent. Male abdomen: posteromedial triangular projection of T1 into T2 weak. Tergal chaetotaxy: T2 anterolateral corner with single line of setae, T2–4 posterior margin with 1 row of scarce setulae, tip of T5 with long setae. S5 1.2x as long as wide,?x as long and 2.7x as wide as S4, posterior margin indented, setulose on posterior half (Pl. 13I). Male genitalia with apical seta on cercus shorter than longest epandrial seta, 1 seta on subepandrial plate, surstylus 0.5x as long as epandrium high, very slightly dilated apically (1.1x), very broad (1.2x as long as wide), structure of lateral surface honeycomb-like, medial surface without setulae (Pl. 13B, C). Special characters: labellum about as long as palpus. Pl. 13: A.  Milichiella virginae, HT, surstylus. B.  M. brevirostris, male genitalia, lateral view. C–F. Surstylus. C.  M. brevirostris; D.  M. zaiziksensis; E.  M. variata. F.  M. faviformis. G.  M. zaiziksensis, male genitalia, lateral view. H–L. Male sternite 4–5. H.  M. virginae, HT; I.  M. brevirostris; J.  M. variata; K.  M. faviformis; L.  M. zaiziksensis. Scale bar: 0.1.   Holotype, ♂: UNITED STATES.  Mississippi: Adams Co., Natchez( 31°33'0"N 91°24'0"W),  20.v.1909, Tucker( USNM, 3216703) in good condition.   Paratypes, same data as HT ( ♂ BMNH, 3216704),   25.v.1909( ♀ USNM, 3216716),   20.vi.1909( ♀ USNM, 3216717); UNITED STATES.  Georgia: Tift Co., Tifton( 31°27'0"N 83°30'0"W),   27.viii.1896( ♂ USNM, 3216718).  Illinois: Macoupin Co., Carlinville(39°16'.12" N 89°52'.12"W),   22.vi.1955, Wheeler( ♂ USNM, 3216707).   Maryland: Prince Georges Co., Bladensburg( 38°55'59.88"N 76°55'59.88"W), 11.viii.19??, Barber( ♂ USNM, 3216705).   Missouri( 38°0'0"N 98°0'0"W),   1–28.ii.1970, Hull( ♂ CNC, 3217763).   Texas: Travis Co., Austin(30°16'.12" N 97°43'59.88"W),   16.x.1950, Wheeler( ♂ USNM, 3216708),   23.x.1951( ♂ USNM, 3216709).  Virginia: Alexandria Co., Maywood( 38°52'49.24"N 77°6'29.74"W),   17.vi.1922, McAtee( ♂ USNM, 3216706). Distribution: Illinoisto Maryland, south to Texasand Georgia. Etymology. The species name,  brevirostrisis derived from the Latin brevis= short and rostrum= proboscis and refers to the short proboscis in comparison to  M. longirostris.    Milichiella faviformisBrake, sp. n.(Pl. 13F, K) Diagnosis. Differs from congeners in the combination of shiny black mesonotum and middle of scutellum, black halter and black legs, male T2–5 silvery white microtomentose except for shiny posterior extended third of T5, and silvery microtomentum extremely long and in rows. Description. Body length: 2.0 mm; wing length: 1.9 mm. Male coloration and vestiture: frons subshiny black, ocellar triangle and orbital plates shiny black, lunule dark brown, basoflagellomere black, face brown microtomentose, palpus black; thorax with mesonotum shiny black, scutellum shiny in middle and laterally slightly brown microtomentose, pleuron slightly brown microtomentose, wing hyaline, veins light brown, brown spot at apex of vein R1 absent, calypter white, halter black, legs black; abdomen with T2–5 silvery white microtomentose except for brown microtomentose anterolateral corner of T2, and shiny posterior extended third of T5. Female coloration and vestiture: halter yellow, abdomen with T1–4 brown microtomentose except for lateral sides, T5 shiny. Head: frons with 2 orbital and 2 frontal setae, anterior frontal seta medioclinate. In males frons 2.6x as wide at posterior margin than at base of antenna, arista about 3.2x as long as basoflagellomere width, pubescence on arista very short, posterior eye margin with narrow notch (3om) and emargination (1om). Thorax: 2 dc, 1 prsc, 1 pprn, 1+0.5 prs, 2 keps setae, posterior prsc less than 0.8x as long as posterior dc, seta between posterior prsc and posterior dc absent. Wing with veins R 4+5and M convergent (3.3); M-ratio is 2.5. Fore femur normal setulose, tibial organ absent. Male abdomen: posteromedial triangular projection of T1 into T2 present. Tergal chaetotaxy: T2 anterolateral corner with single line of setae, T2–4 posterior margin with one scarce row of setulae, T5 black part with long setae. S5 similar to  M. zaiziksensis. 1.4x as long as wide, 1.8x as long and 2.6x as wide as S4, posterior margin indented, setulose on posterior 2/ 3 inmiddle and near posterior margin. Setae at posterior margin thinner than other setae (Pl. 13K). Male genitalia same as  M. zaiziksensis, 1 seta on subepandrial plate, surstylus same as  M. zaiziksensis, structure of lateral surface honeycomb-like with big honeycomb parcels, medial surface without setulae (Pl. 13F). Special characters: labellum about as long as palpus, silvery microtomentum extremely long and in rows.   Holotype, ♂: UNITED STATES.  California: San Bernardino Co., Morongo( 34°1'59.88"N116°34'.12"W),  26.ix.1944, Melander( USNM, 3216783), in good condition.   Paratypes( USNMunless otherwise indicated), same data as HT ( 4 ♂, 3216784–7),  27.ix.1944( 12 ♂ USNM, BMNH, 3216789, 3216793, 3216796, 3216801–9); MEXICO.  Quintana Roo: Cancun( 21°9'0"N 86°45'0"W),  16.vii.1974, Pletsch ( 1 ♂ 3♀, 3217765–8);  UNITED STATES.  California: Inyo Co., Big Pine,  1219 m( 37°9'0"N 118°16'59.88"W),  9.ix.1965, Mulla( ♂, 3216814); Independence( 36°48'0"N 118°10'59.88"W),  23.viii.1952( ♂, 3216813); Kern Co., Bakersfield(35°22'.12" N 119°1'.12"W),  7.vii.1947, Melander( 14 ♂, 3216817–21, 3216824–5); Riverside Co., Riverside( 33°57'0"N 117°22'58.8"W),  12.v.1949, Melander( 5 ♂, 3216810–1),  23.x.1953( 1 ♂ 1♀, 3216588, 3216812); San Bernardino Co., 29 Palms( 34°7'59.88"N 116°3'0"W),  9.v.1946, Melander( 2 ♂, 3216815).   Oregon: Umatilla Co., Umapine(45°58'.12" N 118°28'59.88"W),  21.vi.1921, Melander( 11 ♂ 3♀, 3216831–8, 3216840–6).   Utah: Cache Co., Logan( 41°43'59.88"N 111°49'59.88"W),  1–31.vii.1956, Bohart( ♂, 3216847).   Washington: Franklin Co., Sacajawea State Park( 46°12'1.08"N 119°2'21.84"W),  12.vii.1988, Mathis& Mathis( 6 ♂, 3216967–72); Grant Co., Columbia Nat. W. L. Ref., Crab Creek,  4.8 kmS O’Sullivan Dam( 46°52'27.84"N 119°42'50.04"W),  3.vii.1976, Woodley( 4 ♂, 3216827–30); Coulee City( 47°36'0"N 119°16'59.88"W),  3.ix.1920, Shannon( ♂, 3216849).  Additional material examined (all USNM): UNITED STATES.  New Mexico: Sandoval Co., San Ysidro( 35°33'0"N106°46'.12"W),  10.vi.1977, Hanson, Knowlton( ♂, 3218956).  Washington: Grant Co., Coulee City( 47°36'0"N 119°16'59.88"W),  3.ix.1920, Shannon( ♂, 3216848); Walla Walla Co., Lowden( 46°3'0"N 118°34'59.88"W),  22.vi.1921, Melander( ♂, 3216843). Distribution: Western North America, from Washington south to California and New Mexico, also Mexico( Quintana Roo). Etymology. The species name,  faviformis, is derived from the Latin words favus= honeycomb and forma= shape and refers to the honeycomb-like structure of the male surstylus.    Milichiella longirostrisBrake, sp. n.(Pl. 14E, J) Diagnosis. Differs from congeners in the combination of yellow halter, white wing, long proboscis and protruding face. Description. Body length: 2.1–2.4 mm; wing length: 2.3 mm. Male coloration and vestiture: frons subshiny black, ocellar triangle and upper orbital plates shiny black, lunule black, basoflagellomere basomedially brown, face brown microtomentose, palpus black; thorax with mesonotum shiny black, scutellum brown microtomentose, pleuron slightly microtomentose except for shiny spot on an- and katepisternum, wing white, veins white, brown spot at apex of vein R1 absent, calypter white, halter yellow, legs black except for yellow mid and hind basitarsus; abdomen with T2–5 silvery microtomentose except for shiny black posterior half of T5. Female coloration and vestiture: halter yellow, abdomen with T1–4 brown microtomentose, T5 shiny. Head: frons with 2 orbital and 2 frontal setae, anterior frontal seta?slightly medioreclinate. In males frons 2.7x as wide at posterior margin than at base of antenna, arista about 4.6x as long as basoflagellomere width, pubescence on arista very short, posterior eye margin with notch (4–5om) and narrow emargination. Female posterior eye margin with notch (4–5om) and emargination. Thorax: 2 dc, 1 prsc, 1 pprn, 1 prs, 2 keps setae, posterior prsc as long as posterior dc, seta between posterior prsc and posterior dc absent. Wing with veins R 4+5and M convergent (~2.0); M-ratio is 3.0. Fore femur normal setulose, tibial organ absent. Male abdomen: posteromedial triangular projection of T1 into T2 present. Tergal chaetotaxy: T2 anterolateral corner with single line of setae, T2–4 posterior margin with 1 row of scarce setulae, tip of T5 with long setae. S5 1.5x as long as wide, 1.8x as long and 1.9x as wide as S4, posterior margin indented, relatively strongly setulose on posterior 3/4 and up to lateral margins (Pl. 14J). Male genitalia similar to  M. brevirostris, 1 seta on subepandrial plate, surstylus similar to  M. brevirostris, structure of lateral surface honeycomb-like, medial surface without setulae (Pl. 14E). Pl. 14: A–B.  Milichiella mojingae, HT. A.Male genitalia, lateral view; B. Surstylus. C–D.  M. cochiseae. C. Male genitalia, lateral view; D. Surstylus. E–F. Surstylus. E.  M. longirostris; F. M.sp. H. G. M.sp. H., male genitalia, lateral view. H–K. Male sternite 4–5. H.  M. mojingae, HT; I.  M. cochiseae; J.  M. longirostris; K. M.sp. H. Scale bar: 0.1. Puparium: Empty puparium yellow brown, shiny to subshiny, Posterior spiracles borne on protuberances, which are closer together than in  M. tiefiiand  M. asiatica. Special characters: labellum and palpus elongate, labellum about 1.6x as long as palpus and slightly longer than vertical eye diameter, face protruding.   Holotype, ♂: UNITED STATES.  Florida: Putnam Co., Hollister(29°37'.12" N 81°48'0"W),  20.viii.1985, Milstrey(& puparium USNM, 3216719), ad.  11.ix.1985, in good condition.   Paratypes, same data as HT but ad.  12.ix.1985( ♂ USNM, 3216720),  12.xii.1984( 1 ♂ 1♀ USNM, 3216721, 3216725); UNITED STATES.  Florida: Hernando Co., Withlacoochee State Forest, Croom Reservation( 28°34'59.88"N82°13'.12"W),  13.iv.1989, Barber( ♂ DEBU, 3217764); Highlands Co., Archbold Biological Station( 27°16'59.88"N 81°21'0"W),  13–19.iv.1970, Wirth( ♀ USNM, 3216726). Distribution: Florida. Etymology. The species name,  longirostris, is derived from the Latin longus= long and rostrum= proboscis and refers to the long proboscis. Remarks.  Milichiella longirostrishas been reared from a gopher tortoise burrow.    Milichiella mojingaeBrake, sp. n.(Pl. 14A, B, H) Diagnosis. Differs from congeners in the combination of subshiny to shiny black mesonotum and male abdomen with T2 brown microtomentose except for silvery anterior margin and lateral sides, T3–4 silvery except for posteromedial margin, T5 anteriorly silvery and middle brown microtomentose, posterior half shiny black. Description. Body length: 1.7 mm; wing length: 1.9 mm. Male coloration and vestiture: frons black, ocellar triangle and orbital plates shiny black, lunule?, basoflagellomere black, face brown microtomentose, palpus black; thorax with mesonotum subshiny to shiny black, scutellum brown microtomentose, pleuron partly shiny, partly brown microtomentose, wing hyaline, veins light brown, brown spot at apex of vein R1 absent, calypter hyaline with brown margin, halter black, legs black except for mid and hind basitarsus; abdomen with T2 brown microtomentose except for silvery anterior margin and lateral sides, T3–4 silvery except for posteromedial margin, T5 anteriorly silvery and middle brown microtomentose, posterior half shiny black. Head: frons with? orbital and? frontal setae, anterior frontal seta?. In males frons?x as wide at posterior margin than at base of antenna, arista about 5.0x as long as basoflagellomere width, pubescence on arista short, about as long as base of arista wide, posterior eye margin with?. Thorax:? dc,? prsc,? pprn,? prs,? keps setae, posterior prsc?x as long as posterior dc, seta between posterior prsc and posterior dc?. Wing with veins R 4+5and M weakly convergent (1.4); M-ratio is 2.8. Fore femur normal setulose, tibial organ?. Male abdomen: posteromedial triangular projection of T1 into T2?. Tergal chaetotaxy: T2 anterolateral corner with single line of setae. S5 1.1x as long as wide, 1.3x as long and 2.5x as wide as S4, setulose, posterior margin strongly indented (Pl. 14H). Male genitalia without strong setae on cercus, 1 seta on subepandrial plate, surstylus 0.7x as long as epandrium high, not bent, not dilated, about 3.0x as long as wide, structure of lateral surface honeycomb-like, medial surface without setulae (Pl. 14A, B).   Holotype, ♂: PANAMA.  Colon: Fort Sherman, Mojinga Swamp( 9°18'0"N79°58'.12"W),  7.v.1952, Blanton( USNM, 3218637), in suboptimal condition, abdomen dissected.   Paratype, same data as HT ( ♂ USNM, 3218638). Distribution. Panama. Etymology. The species name,  mojingae, is a genitive noun derived from the typelocality.    Milichiella variataBrake, sp. n.(Pl. 13E, J) Diagnosis. Differs from congeners in the combination of shiny black mesonotum, yellow halter, thorax with numerous acrostichal setae, labellum about as long as palpus, black legs, male T2–5 silvery microtomentose, except for shiny tip of T5. Description. Body length: 1.6–1.9 mm; wing length: 1.5–1.8 mm. Male coloration and vestiture: frons subshiny black, ocellar triangle and upper orbital plates shiny black, lunule dark brown, basoflagellomere basomedially brown, face grey brown microtomentose, palpus black; thorax with mesonotum shiny black, scutellum brown microtomentose, pleuron slightly brown microtomentose except for shiny spots on an- and katepisternum, wing hyaline, veins yellow, brown spot at apex of vein R1 absent, calypter white, halter yellow, legs black, fore and hind tarsus with dark yellow brush; abdomen with T2–5 silvery microtomentose, except for shiny tip of T5. Female coloration and vestiture: halter yellow, abdomen with T1–4 brown microtomentose, T5 shiny. Head: frons with 2 or 2+0.4 orbital and 2 frontal setae, anterior frontal seta medioclinate. In males frons 2.0x as wide at posterior margin than at base of antenna, arista about 4.8x as long as basoflagellomere width, pubescence on arista very short, posterior eye margin with narrow notch (3om) and emargination (2om). Thorax: 2 dc, 1 prsc, 1 pprn, 1 prs, 2 keps setae, posterior prsc less than 0.8x as long as posterior dc, seta between posterior prsc and posterior dc absent. Wing with veins R 4+5and M convergent (2.4); M-ratio is 3.2. Fore femur normal setulose, tibial organ absent. Male abdomen: posteromedial triangular projection of T1 into T2 weak. Tergal chaetotaxy: T2 anterolateral corner with single line of setae, T2–4 posterior margin with 1 row of setulae. S5 1.3x as long as wide, 1.8x as long and 2.0x as wide as S4, rectangular, posterior margin indented, setulose on posterior 3/4 and nearly up to lateral margins (Pl. 13J). Male genitalia same as  M. brevirostris, 1 seta on subepandrial plate, surstylus same as  M. brevirostris, structure of lateral surface weak honeycomb-like, more like longitudinal creases, medial surface without setulae (Pl. 13E). Special characters: labellum about as long as palpus, thorax 0.8–0.9x as long as wide, numerous acrostichal setae, silvery microtomentum long.   Holotype, ♂: UNITED STATES.  Texas: Travis Co., Austin(30°16'.12" N 97°43'59.88"W),  23.xi.1958, Wheeler[?] ( USNM, 3217224), in good condition.   Paratypes, same data as HT ( ♂ USNM, 3217225),  9.xi.1958( 1 ♂ 2♀ USNM, BMNH, 3217226–8),  13.xi.1958( ♂ USNM, 3217223).   Milichiella variata var.: MEXICO.  Nayarit: Jalisco( 21°27'0"N 104°54'0"W),  1–30.ix.1965, Krauss( 6 ♂ USNM, BMNH, 3216710–5).  Sonora:  25.8 kmNE Ciudad Obregon(27°28'.12" N 109°58'59.88"W),  15.v.1961, Howden& Martin( ♂ CNC, 3217229). Distribution: Texas, variety from Mexico( Nayarit, Sonora). Etymology. The species name,  variata, is an adjective derived from the Latin word variatus= marked with contrasting colours, referring to the contrast between the shiny black thorax and silvery abdomen. Remarks. Variety or separate species from Mexicowith brown calypter margin, brown mid basitarsus, surstylus narrower at base and shape of sternite intermediate between  M. brevirostrisand  M. longirostris.    Milichiella virginaeBrake, sp. n.(Pl. 13A, H) Diagnosis. Differs from congeners in the combination of shiny black mesonotum, anteriorly brown microtomentose scutellum, but shiny in middle and laterally, wing with veins R 4+5and M convergent (2.5), halter black and male T2–5 silvery white microtomentose except for shiny posterior extended third of T5. Description. Body length:? mm; wing length: 2.2 mm. Male coloration and vestiture: frons subshiny black, ocellar triangle and orbital plates shiny black, lunule dark brown, basoflagellomere black, face brown microtomentose, palpus black; thorax with mesonotum shiny black except for microtomentose anterior and posterior margin (posterior of dc), scutellum shiny in middle and laterally and anteriorly brown microtomentose, pleuron not visible, wing hyaline, veins light brown, brown spot at apex of vein R1 absent, calypter hyaline, halter black, legs black except for yellow basitarsi; abdomen with T2–5 silvery white microtomentose except for brown microtomentose anterolateral corner of T2, and shiny posterior extended third of T5. Head: frons with 2 orbital and 2 frontal setae, anterior frontal seta medioreclinate. In males frons 2.1x as wide at posterior margin than at base of antenna, arista about 3.3x as long as basoflagellomere width, pubescence on arista very short, posterior eye margin with notch (4om) and emargination (1om). Thorax: 2 dc, 1 prsc, 1 pprn, 1+0.5 prs, 2 keps setae, posterior prsc about as long as posterior dc, seta between posterior prsc and posterior dc present. Wing with veins R 4+5and M convergent (2.5); M-ratio is 2.6. Fore femur normal setulose, tibial organ absent. Male abdomen: posteromedial triangular projection of T1 into T2 present. Tergal chaetotaxy: T2 anterolateral corner with single line of setae, T2–4 posterior margin with one scarce row of setulae, T5 black part with long setae. S5 1.2x as long as wide, 2.2x as long and 3.4x as wide as S4, posterior margin indented, setulose on posterior 2/ 3 inmiddle and near posterior margin (Pl. 13H). Male genitalia with apical seta on cercus slightly longer than epandrial setae, 1 seta on subepandrial plate, surstylus 0.5x as long as epandrium high, slightly dilated apically (1.3x), 1.7x as long as wide, structure of lateral surface weak honeycomb-like, with big parcels, medial surface without setulae (Pl. 13A). Special characters: labellum about as long as palpus.   Holotype, ♂: BRITISH VIRGIN IS.  Virgin Gorda: Prickly Pear I.( 18°30'0"N64°22'.12"W),  6.iv.1958, Clarke ( USNM, 3216850), in suboptimal condition, abdomen dissected. Material of questionable identity:  JAMAICA.  Cornwall: Trelawny, Duncans( 18°27'0"N 77°31'59.88"W),  23.viii.1966, Howden& Becker( ♀ CNC, 3218257);  UNITED STATES.  Florida: Monroe Co., Sugarloaf Key, Sec25 SE 1/4 Kitchings Hammock( 24°37'59.88"N 81°30'0"W),  10–19.viii.1992, Peck& Peck( ♂ DEBU, 3217779);  VENEZUELA.  Aragua: Puerto de Cata( 10°27'46.08"N 67°44'8.16"W),  10–11.vi.1976, Menke& Vincent( ♀ USNM, 3218111). Distribution. Virgin Islands,?Florida,? Jamaica,? Venezuela. Etymology. The species name,  virginae, is derived from the typelocality. Remarks.  Milichiella virginaewas collected at light.    Milichiella zaiziksensisBrake, sp. n.(Pl. 13D, G, L) Diagnosis. Differs from congeners in the combination of shiny black mesonotum and scutellum, yellow halter, hyaline wings, medium or long proboscis and protruding face, male abdomen with T2–5 silvery microtomentose, except for shiny tip of T5. Description. Body length: 2.5–2.6 mm; wing length: 1.9–2.3 mm. Male coloration and vestiture: frons subshiny black, ocellar triangle and upper orbital plates shiny black, lunule dark brown, basoflagellomere black, sometimes basomedially reddish, face brown microtomentose, palpus black; thorax with mesonotum shiny black, scutellum shiny, pleuron slightly brown microtomentose, wing hyaline, veins light brown, brown spot at apex of vein R1 absent, calypter white, margin yellow, halter yellow, legs black except for yellowish mid and hind basitarsus (var.: all basitarsi yellowish); abdomen with T2–5 silvery microtomentose, except for shiny tip of T5. Female coloration and vestiture: halter yellow, abdomen with T1–4 brown microtomentose, T5 shiny. Head: frons with 2 orbital and 2 frontal setae, anterior frontal seta slightly medioreclinate. In males frons 2.1x as wide at posterior margin than at base of antenna, arista about 3.6x as long as basoflagellomere width, pubescence on arista very short, posterior eye margin with narrow notch (3om) and emargination (1–2om). Thorax: 2 dc, 1 prsc, 1 pprn, 1 prs, 2 keps setae, posterior prsc less than 0.8x as long as posterior dc, seta between posterior prsc and posterior dc absent. Wing with veins R 4+5and M convergent (2.6); M-ratio is 2.7. Fore femur slightly more densely setulose, tibial organ absent. Male abdomen: posteromedial triangular projection of T1 into T2 present. Tergal chaetotaxy: T2 anterolateral corner with single line of setae, T2–4 posterior margin with 1 row of setulae. S5 1.4x as long as wide, 2.0x as long and 1.7x as wide as S4, posterior margin indented, setulose on posterior 3/4, even more so near posterior margin, setae at posterior margin thinner than other setae (Pl. 13L). Male genitalia with long seta on cercus, 1 seta on subepandrial plate, surstylus 0.5x as long as epandrium high, dilated apically (1.4x), very broad, structure of lateral surface medium size honeycomb-like, medial surface without setulae (Pl. 13D, G). Special characters: labellum 1.0–1.4x as long as palpus and up to same length as vertical eye diameter, face protruding.   Holotype, ♂: UNITED STATES.  California: San Bernardino Co., ZZYZX Spring( 35°8.6'N, 116°6.3'W),  29.iv.2002, Mathis& Mathis( USNM, 3216724; Ent 00191400), in good condition.   Paratypes( USNMunless otherwise indicated), same data as HT ( 2 ♂, 3216722–3); UNITED STATES.  California: San Bernardino Co., Morongo( 34°1'59.88"N116°34'.12"W),  26.ix.1944, Melander( 2 ♂, 3216752); Imperial Co.,  19.3 kmE Heber(32°43'.12" N 115°31'.12"W),  11.v.1956, Haig( ♂, 3216773); Inyo Co., Nevares Springs( 36°30.7'N, 116°49.3'W),  1.iv.2005, Mathis& Mathis( ♀, 3216780); Panamint Springs( 36°20'23"N, 117°28'1"W),  15.viii.1953, Schlinger( 1 ♂ 1♀, 3216771–2); Lake Co., Saratoga Springs(39°10'.12" N 122°58'.12"W),  30.v.1953, Belkin( 10 ♂ 4♀, 3216754–65, 3216767–8); Orange Co., Corona del Mar( 33°34'59.88"N117°52'.12"W),  16.ix.1949( 2 ♂, 3216753); Riverside Co., Anza Borrego Desert State Park, Mt. Palm Springs( 32°51'0"N116°13'.12"W),  5.iv.1967, Wood( 5 ♂ CNC, 3217195–9); Hot Mineral( 33°43'59.88"N 116°3'0"W),  30.iv.1952, Belkin( ♂, 3216733); Palm Canyon( 33°33'0"N 116°33'0"W),  12.i.1953, Arnaud( 6 ♂, 3216749–51); Palm Desert, Boyd Deep Canyon, Desert Research Center(33°43'.12" N 116°22'.12"W),  4.xi.1999, Arnaud& Arnaud( ♀, 3216781); Thermal( 33°37'59.88"N 116°7'59.88"W),  8.iv.1955, Richards( ♀ CNC, 3217204); Thousand Palms( 33°48'38.3"N 116°22'34.42"W),  19.iii.1951, Tinkham( 4 ♂, 3216747–8),  25.iii.1955, Mason( 2 ♂ CNC, 3217200–1),  3.iv.1955( ♀ CNC, 3217202),  17.iv.1955, Richards( ♀ CNC, 3217203),  12.iii.1960, Melander( 10 ♂, 3216741–6); Thousand Palms, Willis Palm Oasis( 33°48'38.3"N 116°22'34.42"W),  3.iv.1955, Mason( 39 ♂ 3♀ CNC, BMNH, 3217151–92),  9.iv.1955( ♀ CNC, 3217194),  17.iv.1955( ♀ CNC, 3217193).  Additional material examined: CHILE.  Tacna: Tacna( 18°0'20.16"S 70°14'53.88"W),  22.x.1902, Schnuse( ♂ ZMHU, 3217778), paralectotypeof  Eccoptomma montanum;  MEXICO.  Puebla: Tehuacán( 18°30'0"N 97°25'59.88"W),  23.vi.1951, Hurd( 2 ♂ USNM, 3218743–4);  PERU.  Lima: Lima, Lagunas de Villa( 12°3'0"S 77°3'0"W),  14.ii.1984, Mathis( ♂ USNM, 3217776).   Piura: Piura( 5°12'0"S 80°37'59.88"W),  25.vi.1911, Townsend( 7 ♂ USNM, 3217769–75);  UNITED STATES.  California: San Bernardino Co., 29 Palms( 34°7'59.88"N 116°3'0"W),  9.v.1946, Melander( ♂ USNM, 3216587).   Florida: Monroe Co., Key West(24°34'.12" N 81°48'0"W),  1–30.xi.1950, Krauss( ♂ USNM, 3217777);  VENEZUELA.  Aragua: Puerto de Cata( 10°27'46.08"N 67°44'8.16"W),  10–11.vi.1976, Menke& Vincent( ♂ USNM, 3217268).   Milichiella zaiziksensis var. (all USNM): UNITED STATES.  Arizona: Yuma Co.,  16.1 kmNE Ehrenberg( 33°36'0"N114°31'.12"W),  16.iv.1969, Pinger ( 4 ♂, 3216776–9); Yuma (32°43'.12" N 114°37'.12"W),  6.vii.1953, Haga( ♂, 3216775),  16.vii.1953( ♂, 3216774).  California: Imperial Co., Hot Mineral( 33°25'32.16"N 115°41'6"W),  25.iv.1953, Belkin( ♂, 3216736); Riverside Co., 6th Ave. CountyPark,  9.7 kmNE Blythe( 33°36'0"N 114°34'59.88"W),  16.iv.1969, Pinger( 3 ♂, 3216738–40); Coachella Valley, Oasis(33°55'.12" N 116°33'0"W), Tinkham( ♂, 3216737); Hot Mineral( 33°43'59.88"N 116°3'0"W),  30.iv.1952, Belkin( 8 ♂, 3216727–35). Distribution: California and Florida, south to Venezuelaand northern Chile, variety fromArizona and California. Etymology. The species name,  zaiziksensis, is derived from the pronunciation of the typelocality, the Zzyzx Springs. Remarks.  Milichiella zaiziksensishas been collected in an Arnauld Flight Trap, on yucca ( Agavaceae), and flying in small swarms in the sun, mating. Specimens of the variety werecollected on cotton ( Malvaceae). 1909-05-20 USNM United States of America Adams Co. 31.55 Tucker 20 -91.4 Natchez 73 74 1 1 Mississippi holotype [198,838,231,258] BMNH United States of America 73 74 1 1 Georgia paratype [855,1248,231,258] 1909-05-25 USNM United States of America 73 74 1 1 Georgia paratype 1909-06-20 USNM United States of America Tift Co. 31.45 Tifton 20 -83.5 73 74 1 1 Georgia paratype 1896-08-27 USNM United States of America Macoupin Co. 89.86667 Carlinville 73 74 1 1 Illinois paratype 1955-06-22 USNM Wheeler United States of America 73 74 1 1 Illinois paratype USNM Bladensburg & Barber United States of America Prince Georges Co. 38.9333 Prince Georges Co. 1 -76.9333 73 74 1 1 Maryland paratype [687,1066,391,418] United States of America 38.0 Missouri 19 -98.0 73 74 1 Missouri paratype 1970-02-01 1970-02-28 1970-02-01 CNC Hull United States of America 73 74 1 1 Missouri paratype [287,999,431,458] United States of America Travis Co. 97.7333 Austin 73 74 1 Texas paratype 1950-10-16 USNM Wheeler United States of America 73 74 1 1 Texas paratype 1951-10-23 USNM United States of America Alexandria Co. 38.880344 Maywood 1 -77.10826 73 74 1 1 Virginia paratype [342,845,511,538] 1922-06-17 USNM McAtee United States of America 73 74 1 1 Virginia paratype 1944-09-26 USNM United States of America San Bernardino Co. 34.0333 Melander Morongo 73 74 1 1 California holotype 1944-09-27 1974-07-16 1944-09-27 USNM, BMNH Mexico 74 75 21.15 Cancun 21 -86.75 73 74 20 3 17 Quintana Roo paratype 1946-05-09 1965-09-09 1946-05-09 Mulla & Independence & Bakersfield & Melander & Riverside & Palms United States of America Inyo Co. 1219 34.133297 Kern Co. 12 -116.05 Big Pine 74 75 25 1 24 California paratype 1921-06-21 Melander United States of America Umatilla Co. 118.4833 Umapine 74 75 14 3 11 Oregon paratype 1956-07-01 1956-07-31 1956-07-01 Bohart United States of America Cache Co. 41.7333 Logan 1 -111.8333 74 75 1 1 Utah paratype 1920-09-03 1988-07-12 1920-09-03 Mathis & Columbia Nat. W. L. Ref. & Woodley & Coulee City & Shannon United States of America Franklin Co. 47.6 Grant Co. 15 -119.2833 Sacajawea State Park 74 75 11 11 Washington paratype 1920-09-03 1977-06-10 1920-09-03 USNM United States of America Sandoval Co. 46.05 Hanson 15 -118.5833 San Ysidro 74 75 3 3 New Mexico 1985-08-20 1985-09-11 1985-08-20 USNM United States of America Putnam Co. 81.8 Milstrey Hollister 75 76 1 1 Florida holotype 1970-04-13 1989-04-13 1970-04-13 USNM, DEBU United States of America Hernando Co. 27.2833 Croom Reservation 13 -81.35 Withlacoochee State Forest 75 76 5 2 3 Florida paratype 1952-05-07 USNM Panama Fort Sherman 9.3 Blanton Mojinga Swamp 76 77 1 1 Colon holotype [198,779,1184,1210] USNM 76 77 1 1 paratype 1958-11-23 USNM United States of America Travis Co. 97.7333 Wheeler Austin 77 78 1 1 Texas holotype 1958-11-09 1958-11-13 1958-11-09 USNM, BMNH 77 78 5 2 3 paratype 1961-05-15 1965-09-30 1961-05-15 USNM, BMNH, CNC Howden & Martin Mexico 109.9833 Krauss 5 -104.9 77 78 7 7 Nayarit 1958-04-06 USNM Prickly Pear I. British Virgin Islands 18.5 Virgin Gorda 78 79 1 1 holotype 1966-08-23 CNC Howden & Becker Jamaica 18.45 Duncans 15 -77.5333 Cornwall 78 79 1 1 Trelawny 1992-08-10 1992-08-19 1992-08-10 DEBU Peck United States of America Monroe Co. 24.6333 Sec 14 -81.5 Sugarloaf Key 78 79 1 1 Florida 1976-06-10 1976-06-11 1976-06-10 USNM de Cata & Menke & Vincent Venezuela 10.4628 Puerto de Cata 1 -67.735596 78 79 1 1 Aragua 2002-04-29 USNM Mathis United States of America San Bernardino Co. 35.143333 Spring 119 -116.105 78 79 1 1 California holotype 1944-09-26 2005-04-01 1944-09-26 USNM, CNC, BMNH Melander & Haig & Nevares Springs & Mathis & Panamint Springs & Schlinger & Saratoga Springs & Belkin & Wood & Hot Mineral & Palm Canyon & Arnaud & Palm Desert & Boyd Deep Canyon & Desert Research Center & Thermal & Richards & Thousand Palms & Tinkham & Mason United States of America San Bernardino Co. 33.81064 Imperial Co. 1 -116.37623 Morongo 79 80 100 15 85 California paratype 1902-10-22 ZMHU Schnuse Chile -18.0056 Tacna 1 -70.2483 79 80 1 1 Tacna paralectotype 1951-06-23 USNM Hurd Mexico 18.5 Tehuacan 15 -97.4333 79 80 2 2 Puebla 1984-02-14 USNM Mathis Peru -12.05 Lagunas de Villa 21 -77.05 Lima 79 80 1 1 Lima 1911-06-25 USNM Townsend Peru -5.2 Piura 15 -80.6333 79 80 7 7 Piura 1946-05-09 USNM Melander United States of America San Bernardino Co. 34.133297 Palms 12 -116.05 79 80 1 1 California 1950-11-01 1950-11-30 1950-11-01 USNM Krauss United States of America Monroe Co. 81.8 Key West 79 80 1 1 Florida 1976-06-10 1976-06-11 1976-06-10 USNM Menke & Vincent Venezuela 10.4628 Puerto de Cata 1 -67.735596 79 80 1 1 Aragua 1952-04-30 1969-04-16 1952-04-30 USNM United States of America Yuma Co. 33.7333 Imperial Co. 12 -116.05 Haga 79 80 19 19 Arizona