Anthomyza pallida
Creators: name: Roháćek, Jindřich
name: Barber, Kevin N.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Anthomyzidae
Anthomyza
Anthomyza pallida

description: Key to identincation of the Nearctic species of the Anthomyza pallida group
1 Male. ........................................................................................................................ 2
– Female. .................................................................................................................... 7
2(1) Gonostylus short, in widest extension (laterocaudal) view suboblong and with 3 distinct teeth on apex (Fig. 263) but in lateral view pointed (Fig. 261); pregonite (in lateral view) with broad trapezoidal anterior tooth-like process (Fig. 262); nlum of distiphallus subterminally (in front of slender curved end) with a distinctive dorsal tooth (Fig. 266). ....................................................................... A. pengellyi sp. nov.
– Gonostylus long and slender, more or less tapered towards apex and with various number of teeth (0–4) (Figs 286, 328, 368); pregonite with anterior tooth-like process more slender, subtriangular and pointed (Figs 282, 324, 364); nlum of distiphallus sometimes with a dorsal lobe subapically, never with a tooth (Figs 284, 322, 362). ......................................................................................................................... 3
3(2) Gonostylus terminally with 4 distinct teeth (Fig. 286) that are also visible in lateral view (Fig. 281); aedeagal part of folding apparatus laterally with a few spine-like excrescences (Fig. 285). ......................................................... A. mcalpinei sp. nov.
– Gonostylus terminally simple (Figs 328, 349) or with teeth reduced (Figs 303, 368); aedeagal part of folding apparatus laterally with a group of small to minute dark tubercles (Figs 304, 326, 348, 367). ........................................................................ 4
4(3) Thorax strikingly bicolourous: mesonotum mostly dark brown with characteristic bluish grey microtomentum, pleura contrastingly yellow (Figs 296, 297). Gonostylus relatively short (Fig. 303), in lateral view curved, with concave anterior side (Fig. 300); postgonite nat, distally broad (Fig. 302); saccus of distiphallus distally voluminous (Fig. 304). ......................................................... A. pullinotum sp. nov.
– Thorax colouration ranging widely from entirely yellow to entirely grey with microtomentum less distinct and pale grey to brownish grey. Gonostylus longer, in lateral view with anterior side convex or slightly concave (Figs 323, 344) or concave but in the latter case long and very slender (Fig. 363); postgonite narrower, not markedly broadened distally (Figs 324, 345, 364); saccus of distiphallus more slender (Figs 326, 348, 367). ......................................................................................................... 5
5(4) Gonostylus apically rather broad, usually not pointed (Fig. 328), rarely acute but always curved medially in distal third (Fig. 321); pregonite with additional smaller angle (Fig. 324) behind anterior tooth; connecting sclerite distally with a few robust spines (Fig. 326); nlum subterminally with a distinctive dark subventral tooth (Fig. 327); upper orbits entirely yellow; femora sometimes brownish. .............................. .................................................................................... A. concolor (Thomson, 1869)
– Gonostylus apically pointed (Figs 349, 368) and slightly curved medially rather regularly along entire length (Figs 343, 361); pregonite lacking additional projection behind anterior tooth (Figs 345, 364); connecting sclerite distally at most with small tubercles (Figs 348, 367); nlum subterminally with a small tooth or short spine (Figs 347, 362); upper orbits yellow, sometimes brownish from occiput past level of dorsomedial corner of eye as far as posterior ors; femora yellow. ............................... 6
6(5) Epandrium broad (Fig. 343); gonostylus shorter and basally wider (Fig. 349), in lateral view with distinctly convex anterior side (Fig. 344); saccus of distiphallus with 4 large spines (Fig. 348); upper orbits entirely yellow. ....... A. occidentalis sp. nov.
– Epandrium narrower (Fig. 361); gonostylus longer and more slender, narrow also basally (Fig. 368), in lateral view with concave anterior side (Fig. 363); saccus of distiphallus with 5 smaller spines (Fig. 367); upper orbits often brownish from occiput past level of dorsomedial corner of eye as far as posterior ors. ................................. ................................................................................................ A. vockerothi sp. nov.
7(1) 7th abdominal segment with S7 separate (Figs 270, 289, 374). .............................. 8
– 7th abdominal segment with S7 anteriorly fused to T7 forming with it tergosternum T7+S7 (Figs 308, 331, 352 and 377)......................................................................10
8(7) T7 very narrow, elongate (Figs 370, 379), laterally without microtomentum and strikingly glossy and with distinctive posterolateral lobes (Fig. 379); also S7 and S8 (Fig. 374) and T8 strikingly elongate, the latter anteromedially deeply incised (Fig. 370); upper orbits often brownish from occiput past level of dorsomedial corner of eye as far as posterior ors. ................................................................ A. vockerothi sp. nov.
– T7 broader (Figs 268, 287), laterally distinctly microtomentose and posterolaterally simple (Figs 269, 380); S7 and S8 (Figs 270, 289) and T8 shorter, the latter without deep anteromedial incision (Figs 268, 287); upper orbits entirely yellow. ............. 9
9(8) T7 dorsally shortened because of deep anteromedial incision (Fig. 287), and its anteroventral corners projecting as pigmented lobes far onto ventral side almost meeting medially (Fig. 289); 7th spiracle situated in membranous emargination at margin of T7 (Figs 289, 380). T8 broad and pale (Fig. 287); T10 pale and with 2–3 pairs of setae (1 long) (Fig. 287); spermatheca with deep terminal invagination and distinct blunt spines around duct insertion (Fig. 293). ........................ A. mcalpinei sp. nov.
– T7 dorsally longer, with a shallow anteromedial emargination (Fig. 268), and its anteroventral corners less projecting onto ventral side (Fig. 270); 7th spiracle embedded in T7 (Figs 269, 270). T8 narrow and dark (Fig. 268); T10 also dark and with single pair of long setae (Fig. 268); spermatheca with shallow terminal invagination and minute spinulae around duct insertion (Fig. 267). ............ A. pengellyi sp. nov.
10(7) Mesonotum dark brown with characteristic bluish grey microtomentum, pleura contrastingly yellow (Fig. 297). Tergosternum T7+S7 shorter (Fig. 378), with relatively small, narrow and nat part formed by original S7, the latter narrower anteriorly and narrowly connected with enlarged T7 (Fig. 308); spermatheca with terminal invagination wider and shorter, base with spines larger and more numerous (Fig. 310). .... ............................................................................................... A. pullinotum sp. nov.
– Thorax colouration different, with microtomentum less distinct and pale grey to brownish grey. Tergosternum T7+S7 longer (Figs 376, 377), with large, broad and ventrally convex part formed by original S7, the latter wider anteriorly and broadly connected with T7 (Figs 331, 352); spermatheca with terminal invagination narrow and deep, base with small and fewer spinulae (Figs 333, 350). ............................ 11
11(10) T6 short and more transverse (Fig. 330); ventral part of T7+S7 with original S7 distinctly convex and separated laterally from T7 by very narrow membranous slit and 7th spiracle embedded in T7 far from this slit (Figs 331, 376); dorsal part of T7+S7 with short thick setae (Fig. 330); ventral internal sclerites in female genital chamber close to each other (Fig. 332); spermatheca with nne pointed spinulae on base (Fig. 329); femora sometimes brownish. ........................... A. concolor (Thomson, 1869)
– T6 long, slightly transverse (Fig. 351); T7+S7 ventrally less convex and separated from T7 by wider membranous slit almost reaching to anterior margin of synsclerite and 7th spiracle embedded close to this slit (Figs 352, 377); dorsal part of T7+S7 with longer and nner setae (Fig. 351); ventral internal sclerites in female genital chamber more distant from each other (Fig. 353); spermatheca with blunt spinulae on base (Fig. 350); femora entirely yellow. ......................... A. occidentalis sp. nov.
description: Published as part of Roháćek, Jindřich & Barber, Kevin N., 2016, Nearctic Anthomyzidae: a monograph of Anthomyza and allied genera (Diptera), pp. 1-412 in Acta Entomologica Musei Nationalis Pragae (suppl.) (suppl.) 56 on pages 142-144, DOI: 10.5281/zenodo.4272829