Medomega

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This page is derived from the original publication listed below, whose author(s) should always be credited. Further contributors may edit and improve the content of this page and, consequently, need to be credited as well (see page history). Any assessment of factual correctness requires a careful review of the original article as well as of subsequent contributions. If you are uncertain whether your planned contribution is correct or not, we suggest that you use the associated discussion page instead of editing the page directly. This page should be cited as follows (rationale): Winterton S, Lambkin C (2012) New Australian stiletto flies: revision of Manestella Metz and description of Medomega gen. n. (Diptera, Therevidae, Agapophytinae). ZooKeys 240 : 1–119, doi. Versioned wiki page: 2012-11-09, version 28557, https://species-id.net/w/index.php?title=Medomega&oldid=28557 , contributors (alphabetical order): Pensoft Publishers. Citation formats to copy and paste BibTeX: @article{Winterton2012ZooKeys240, author = {Winterton, Shaun L. AND Lambkin, Christine L.}, journal = {ZooKeys}, publisher = {Pensoft Publishers}, title = {New Australian stiletto flies: revision of Manestella Metz and description of Medomega gen. n. (Diptera, Therevidae, Agapophytinae)}, year = {2012}, volume = {240}, issue = {}, pages = {1--119}, doi = {10.3897/zookeys.240.2967}, url = {http://www.pensoft.net/journals/zookeys/article/2967/abstract}, note = {Versioned wiki page: 2012-11-09, version 28557, https://species-id.net/w/index.php?title=Medomega&oldid=28557 , contributors (alphabetical order): Pensoft Publishers.} } RIS/ Endnote: TY - JOUR T1 - New Australian stiletto flies: revision of Manestella Metz and description of Medomega gen. n. (Diptera, Therevidae, Agapophytinae) A1 - Winterton S A1 - Lambkin C Y1 - 2012 JF - ZooKeys JA - VL - 240 IS - UR - http://dx.doi.org/10.3897/zookeys.240.2967 SP - 1 EP - 119 PB - Pensoft Publishers M1 - Versioned wiki page: 2012-11-09, version 28557, https://species-id.net/w/index.php?title=Medomega&oldid=28557 , contributors (alphabetical order): Pensoft Publishers. M3 - doi:10.3897/zookeys.240.2967 Wikipedia/ Citizendium: <ref name="Winterton2012ZooKeys240">{{Citation | author = Winterton S, Lambkin C | title = New Australian stiletto flies: revision of Manestella Metz and description of Medomega gen. n. (Diptera, Therevidae, Agapophytinae) | journal = ZooKeys | year = 2012 | volume = 240 | issue = | pages = 1--119 | pmid = | publisher = Pensoft Publishers | doi = 10.3897/zookeys.240.2967 | url = http://www.pensoft.net/journals/zookeys/article/2967/abstract | pmc = | accessdate = 2024-12-23 }} Versioned wiki page: 2012-11-09, version 28557, https://species-id.net/w/index.php?title=Medomega&oldid=28557 , contributors (alphabetical order): Pensoft Publishers.</ref> See also the citation download page at the journal.

Taxonavigation

Ordo: Diptera
Familia: Therevidae

Name

Medomega Winterton & Lambkin, 2012 gen. n. – Wikispecies link – ZooBank link – Pensoft Profile

Type species:

Medomega danielsi sp. n.

Diagnosis

Body length 6.0–9.0 mm. Body usually covered with dense glaucous grey pubescence; head higher to much higher than long, pronounced ventral projection of head; male frons width variable, ranging from narrower than anterior ocellus to slightly wider than ocellar tubercle, eyes not contiguous; ocellar tubercle raised, black with short, dark setae in both sexes; antennae length variable; scape cylindrical, sometimes bulbous with strong setae, length variable but usually not longer than flagellum; flagellum turbinate with apical style; parafacial pile present but never extensive, rarely absent; face not concave, flat, grey pubescent; palpus 2-segmented, apical segment relatively short; prosternal depression without setae; metanepisternum with post-spiracular setae absent; posterior surface of mid coxa usually bare, sometimes pilose; wing vein R2+3 reflexed anteriorly with kink approximately midway; cell m3 open (Fig. 71); femoral velutum patches absent; fore femur sometimes with pd setae; hind femur with one or more subapical av setae; abdominal tergite 2 often with patch of short setae medially; wing infuscate brown and translucent white, mottled to fenestrate; hind coxal knob present; gonocoxite extended posterolaterally; inner gonocoxal process present; dorsal and ventral apodemes of parameral sheath joining along distiphallus, both forked; pubescence sparsely present on gonocoxites; three spermathecae joined to spermathecal sac duct; spermathecal sac present; acanthophorite spines A1 and A2 present, well developed.

Comments

Medomega gen. n. is a distinctive genus differentiated from other agapophytine therevids based on the absence of velutum on the femora, cell m3 open, head typically higher than long, and mottled wings with vein R2+3 reflexed (Fig. 71). In the key to genera by Winterton (2011) Medomega gen. n. can be identified by modifying the existing couplets as follows:

Comments — S. Winterton , C. Lambkin

20		Body usually large to medium sized, robust, glossy dark metallic blue or orange; abdomen abruptly tapered; small patch of postspiracular setae present on thorax; wing extensively black (sometimes hyaline basally) or orange infuscate    21.
–		Body size variable, usually relatively slender, never glossy metallic blue or orange; abdomen elongate, evenly tapered; thoracic postspiracular setae absent; wing infuscation variable, usually banded or hyaline, never uniform orange or black    22a.
21		Lead statement missing!    Scape short, setae on antennae and head relatively short; two pairs of scutellar setae; wing with uniform orange infuscation…Eupsilocephala Kröber.
–		Scape elongate with numerous enlarged setae; single pair of scutellar setae; wing either with uniform black infuscation or hyaline basally    Johnmannia Irwin & Lyneborg.
22a		Body distinctly covered with glaucous grey and brown pubescence; head higher than long; wing usually mottled, wing vein R2+3 reflexed anteriorly    Medomega gen. n.
–		Body pubescence variable, but usually not densely grey and brown; head not distinctly higher than long, usually longer than high; wing vein R2+3 with gentle curve or straight, not with abrupt kink    22.
22		Male and female occiput convex, variously overlain with bronze, matte black, silver and gold pubescence; multiple rows of postocular setae in male; abdomen of equal diameter along length; distiphallus broad, cylindrical; medium to large individuals    Taenogera Kröber.
–		Male occiput typically flat to concave, not distinctly convex, rarely overlain with bronze, matte black, silver and gold pubescence; usually single row of postocular setae in male; abdomen tapered; distiphallus usually narrow; size variable    23.

Etymology

The genus name is derived from the Greek, medos, counsel, plan and mega, very great; referring to the aristocratic shape of the head.

Included species

Medomega averyi sp. n.; Medomega bailmeup sp. n.; Medomega chlamydos sp. n.; Medomega danielsi sp. n.; Medomega gigasathe sp. n.; Medomega nebrias sp. n.;

Key to species of Medomega gen. n

Key to species of Medomega gen. n — S. Winterton , C. Lambkin

1		Mid coxa with pale setae on posterior surface    2
–		Mid coxa without setae on posterior surface    3
2	(1)	Postocular and scutal macrosetae white in male, mostly dark in female; frons without dark spots along eye margin; male abdomen with extensive covering of elongate white setae (Fig. 73); wing mostly white translucent, with slight infuscation along wing veins (Figs 73, 74, 75, 76) (Western Australia)    Medomega averyi sp. n.
–		Postocular and scutal macrosetae uniform black in both sexes; large dark spots on frons along to eye margin (Fig. 78); male abdomen without extensive covering of elongate white setae (Fig. 77); wing dark infuscate with white stellate fenestration (Figs 79, 80, 81) (Northern Territory)    Medomega bailmeup sp. n.
3	(1)	Scutum tan with dark setal bases (Fig. 90); male terminalia very large relative to abdomen length (1/3 total length) (Figs 89, 91, 92) (Western Australia)    Medomega gigasathe sp. n.
–		Scutum grey with extensive dark markings not restricted to setal bases (Figs 83, 85, 86); male terminalia rarely unusually large relative to abdomen length    4
4	(3)	All setae on head, thorax and abdomen white (Figs 82, 83); abdomen with extensive covering of elongate white setae laterally (Fig. 82); wing mostly white translucent, with slight infuscation along wing veins (Fig. 82, 83) (male only) (Western Australia)    Medomega chlamydos sp. n.
–		At least scutal macrosetae dark, usually more extensive dark setae on head (Figs 86, 94); abdomen either with silver velutum pubescence in male only or completely absent, never as white elongate setae; wing extensively infuscate, often as dappled fenestration (Figs 86, 94)    5
5	(4)	Scape slightly shorter than flagellum (Fig. 85); male with dense silver pubescence on abdomen, especially laterally; male terminalia orange, relatively large compared with abdomen length (Figs 72F-J, 85) (Queensland)    Medomega danielsi sp. n.
–		Scape equal in length to flagellum (Fig. 93); male abdomen with sparse silver velutum covering; male terminalia dark, not large compared to abdomen length (Figs. 93, 94, 98) (New South Wales)    Medomega nebrias sp. n.

Original Description

• Winterton, S; Lambkin, C; 2012: New Australian stiletto flies: revision of Manestella Metz and description of Medomega gen. n. (Diptera, Therevidae, Agapophytinae) ZooKeys, 240: 1-119. doi

Images

Figure 71. Medomega danielsi sp. n., wing. Scale line = 0.2 mm.  Figure 72. Medomega spp., male genitalia. Medomega bailmeup sp. n.: A epandrium, dorsal B gonocoxites, lateral C gonocoxites, ventral D aedeagus, dorsal E aedeagus, lateral. Medomega danielsi sp. n.: F epandrium, dorsal G gonocoxites, lateral H gonocoxites, ventral I aedeagus, dorsal J aedeagus, lateral. Scale line = 0.2 mm.  Figure 73. Medomega averyi sp. n., male, lateral view. Body length = 6.2 mm.  Figure 74. Medomega averyi sp. n., male, oblique view. Body length = 6.2 mm.  Figure 75. Medomega averyi sp. n., female, oblique view. Body length = 7.2 mm.  Figure 76. Medomega averyi sp. n., male genitalia A epandrium B gonocoxites with aedeagus in situ, ventral view. Scale line = 0.2 mm.  Figure 77. Medomega bailmeup sp. n., male, lateral view. Body length = 5.5 mm.  Figure 78. Medomega bailmeup sp. n., male, anterior view. Body length = 5.5 mm.  Figure 79. Medomega bailmeup sp. n., male, lateral view. Body length = 5.5 mm.  Figure 80. Medomega bailmeup sp. n., female, lateral view. Body length = 6.0 mm.  Figure 81. Medomega bailmeup sp. n., female, oblique view. Body length = 6.0 mm.  Figure 82. Medomega chlamydos sp. n., male, lateral view. Body length = 6.0 mm.  Figure 83. Medomega chlamydos sp. n., male, oblique view. Body length = 6.0 mm.  Figure 85. Medomega danielsi sp. n., male, lateral view. Body length = 6.0 mm.  Figure 86. Medomega danielsi sp. n., male, oblique view. Body length = 6.0 mm.  Figure 89. Medomega gigasathe sp. n., male, lateral view. Body length = 7.5 mm.  Figure 90. Medomega gigasathe sp. n., male, oblique view. Body length = 7.5 mm.  Figure 91. Medomega gigasathe sp. n., male genitalia, lateral view. Scale line = 0.2 mm.  Figure 92. Medomega gigasathe sp. n., male genitalia, ventral view. Scale line = 0.2 mm.  Figure 93. Medomega nebrias sp. n., male, lateral view. Body length = 7.0 mm.  Figure 94. Medomega nebrias sp. n., male, oblique view. Body length = 7.0 mm.  Figure 98. Medomega nebrias sp. n., male genitalia A epandrium B gonocoxites with aedeagus in situ, ventral view. Scale line = 0.2 mm.