Drymeia amnicola (Huckett, 1966)

Savage, Jade & Sorokina, Vera S., 2021, Review of the North American fauna of Drymeia Meigen (Diptera, Muscidae) and evaluation of DNA barcodes for species-level identification in the genus, ZooKeys 1024, pp. 31-89 : 31

Drymeia amnicola (Huckett, 1966) Figs 2B , 4G , 6H, J

Pogonomyia amnicola Huckett, 1966: 291.

Pogonomyia rivalis Huckett, 1966: 293. syn. nov.

Type material examined.

Pogonomyia amnicola - Holotype male labelled "Sardine Crk./ Mono Co. / Elev. 8500/ Cal. VI-28-51"; " J.W. MacSwain / Collector"; " Pogonomyia / Drymeia amnicola / n. sp./ holotype [red]"; " California Academy/ of Sciences/ Type No. 10149" ( CAS). Allotype female labelled "Sardine Crk./ Mono Co. / Elev. 8500/ Cal. VI-28-51"; " J.W. MacSwain / Collector"; " Pogonomyia / Drymeia amnicola / n. sp./ allotype [orange]"; " U.C. Berkeley / EMEC 69,278" ( EMEC) .

Paratypes: all with " Pogonomyia / Drymeia amnicola / n. sp./ paratype [blue]". 2 males, " Sardine Crk. / Mono Co. / Elev. 8500/ Cal. VI-28-51"; " J.W. MacSwain / Collector" ( EMEC) . 5 males, 1 female, same as previous except "CA Downing Collector". 9 females, 3 males, same as previous except " A.T. McClay / Collector" ( UCDC) . 14 females, 7 males, same as previous except "S.M. Kappos/ Collector". 1 male, same as previous except " R.W. Morgan / Collector" . 1 female, same as previous except " D. P. Lawfer / Collector" . 2 males, 1 female, same as previous except VII-11-51; "A.T. McClay/ Collector". 4 females, same as previous except VII-12-51. 14 males and 11 females, same as previous except " Sardine Creek / Mono Co Cal. / VI-28-1951. 1 female, " Hope Valley / Alpine Co/ Calif. VII-9-48"; " S.A. Sher / Collector" ( EMEC) ; 1 female, same as previous except " D. Carter / Collector" . 6 females, " 4 miles north/ Silver Lake Cal./ Amador Co. / VII-25. 1955 "; " E.I. Schlinger / Collector" ( UCDC) . 1 male, same as previous except " J. C.Downey / Collector "; 1 male, Echo Lake Cal./ Eldorado Co. / VII-23-1955 "; " E.I. Schlinger / Collector" ( UCDC) . 1 male, same as previous except " J. C.Downey / Collector" . 1 female, " Winnemucca / Lk. Alpine Co / Cal. VI-30-1959 "; " R.M. Bohart / Collector" ( UCDC) . 1 male, same as previous except " P.M. Maran / Collector. 2 females, " North Lake / Inyo Co. Calif/ VI-30-61"; " J.S. Buckett / Collector" ( UCDC) . 1 female, " 5 miles east/ Weber Lake / Cal. Sierra Co. / VII.29.1955"; " R.W. Bushing / Collector" ( UCDC) . 1 female, same as previous except VII.30.1955; "E. A. Kurta/ Collector". 1 male and 1 female, " 1 mi. 5/ Saddlebag L./ Mono. Co. Cal./ VII.15-1961 "; " D. R. Miller / Collector" ( UCDC) . 1 female, " Luther Pass Cal. / Grass Lake / Eldorado Co. / VII-24-1955 "; " J.C. Downey / Collector" ( UCDC) . 1 female, " Wood Lk. Cal. / Alpine Co. / VII-16 1960 "; " C.G. Moore / Collector" ( UCDC) . 1 male, " Sonora Pass / Cal Elev 9624/ VII.17 1953 "; " R.M. Bohart / Collector" ( UCDC) . 1 male, " Strawberry / Tuolumne Co / Calif. VII.15 51"; " A.T. McClay / Collector" ( UCDC) .

Pogonomyia rivalis - Allotype female labelled "Sardine Crk./ Mono Co. / Elev. 8500/ Cal. VI-28-51"; " S.M. Kappos / Collector"; " Pogonomyia rivalis / n. sp./ Allotype [orange]" ( UCDC) . Paratypes: all with " Pogonomyia / Drymeia rivalis / n. sp./ paratype [blue]". 3 males and 1 female, same as allotype. 1 female, same as previous except " J.W. MacSwain / Collector" . 2 females and 1 male, same as previous except ( EMEC) . 1 male, same as previous except " C.A. Downing / Collector" . 1 female, same as previous except " D. P. Lawfer / Collector" ( UCDC) . 2 males and 1 female, same as previous except " Sardine Creek / Mono Co Cal./ VI.28.1951"; " A.T. McClay / Collector" . 1 female, same as previous except VII-8-51.

Other material examined.

1 male, 7 females: Nearctic: USA: California: Leavitt Mdw, 1 mi. S saddlebag Lake , Sardine Creek ( EMEC, UCDC) .

Distribution.

Nearctic: USA (California).

DNA Barcode.

None available.

Remarks.

In his original descriptions, Huckett (1966) relied on subtle differences in variable characters to separate D. rivalis from D. amnicola . Following the examination of type material from these two taxa we concluded that all features listed in the original descriptions are variable (including the pollinosity of the female parafacial, a feature we found to vary from entirely dusted to mostly glossy in the type series of D. amnicola ), and that D. rivalis is a synonym of D. amnicola .

Furthermore, Huckett (1966, 1975) uses the strength of av bristles on the apical 1/2 of F2 to separate males D. santamonicae (strong and long) from D. amnicola (weak) and junior synonym D. rivalis (weak but slightly stronger). While the male holotypes of these taxa do exhibit a difference in the strength of the F2 av, we have found this feature to be variable. The configuration of the F2 pv row and the pollinosity of the thorax and abdomen appear to be more stable characters to separate the males of D. santamonicae from those of D. amnicola (and the similar D. aldrichi ) (see couplet 21 of male key).

Figures

Figure 2. Male hind tibia, dorsal view A D. ponti B D. aterrima C D. groenlandica D D. setibasis E D. similis F D. vockerothi G D. quadrisetosa H D. glacialis I D. hucketti J D. woodorum. Scale bars: 0.5 mm.

Figure 4. Male head, lateral view A D. pribilofensis B D. neoborealis C D. vockerothi D D. spinitarsis E D. glacialis F D. santamonicae G D. amnicola H D. minor. Scale bars: 0.5 mm.

Figure 6. Male mid femur, anterior view (except G, H, L) A D. cantabrigensis B D. setibasis C D. vockerothi D D. profrontalis E D. glacialis F D. quadrisetosa G D. santamonicae, antero-dorsal view H D. amnicola, postero-dorsal view I D. similis J D. amnicola K D. hucketti L D. aldrichi, ventral view. Scale bars: 0.25 mm.