Acomoptera crispa
| Notice: | 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):
Citation formats to copy and paste
BibTeX: @article{Kerr2011ZooKeys137, RIS/ Endnote: TY - JOUR Wikipedia/ Citizendium: <ref name="Kerr2011ZooKeys137">{{Citation See also the citation download page at the journal. |
Ordo: Diptera
Familia: Mycetophilidae
Genus: Acomoptera
Name
Acomoptera crispa Kerr, 2011 sp. n. – Wikispecies link – ZooBank link – Pensoft Profile
Type Material
Holotype: ♂, “B.C., Hixon, 21.v.1966, E.D.A. Dyer" [53.420°, –122.595°] / “HOLOTYPE 11G483 ♂ Acomoptera crispa Kerr 2011" [red label]. Deposited in CNC, specimen glued directly to the pin, missing ultimate two right palpomeres, missing ultimate 10 (left) and 9 (right) antennal flagellomeres, missing all legs except mid left, both wings partially torn but complete; otherwise in fair condition. Specimen dissected, male genitalia preserved in DMHF, on card marked “11G483" pinned below specimen.
Diagnosis
This species is most similar to Acomoptera vockerothi in having similarly-shaped gonostyli that feature a line of long, curved setae near the dorsal margin. Acomoptera crispa may be separated from Acomoptera vockerothi by the gonocoxites lacking a posteromedial denticulate ridge ventrally (Figs 2B, 3B). It is also distinguished by having a longer, narrower ventromedial gonostylus lobe, which is usually forked (Fig. 3E) and the outer dorsal lobe is broadly attached laterally (Figs 2D, 3D–E).
Description
Male. Body length: 6.0 mm. Wing length: 5.8 mm.
Coloration (Fig. 1). Head light brown; palpomeres yellow to yellowish brown. Antennal scape and pedicel yellow to yellowish brown, flagellomeres yellowish increasingly yellowish brown toward tip. Thorax yellowish brown; area of scutum bearing acrostichal and dorsocentral setae defined by darker coloration, scutum setae gold- or golden brown-colored. Mid leg becoming increasingly brown towards tarsi; coxae yellowish or cream-colored; femur yellowish, tibia yellowish brown, tarsi brown (other legs missing, but likely having similar coloration). Wing hyaline without markings, wing veins yellowish brown; haltere stem and knob yellow to light yellowish brown. Abdominal segments concolorous, yellowish brown, with scattered yellow and brown setae. Terminalia yellowish brown.
Head. Ocelli slightly raised; middle ocellus approx. same size as lateral ocelli; lateral ocellus located approx. width of ocellus or less from eye margin, separated from median ocellus by approx. twice its own diameter. Eyes with sparse, inconspicuous microsetae, which are approximately as long as width of facet. Antennal length probably approx. 4.0 mm (approx. 0.8× length of abdomen). Palpus approx. 1.0–1.25× width of head (anterior view); length of palpomeres 2 and 3 subequal; palpomere 4 approx. 4.5× longer than wide; palpomere 5 approx. 10× longer than wide, subequal to or longer than combined length of palpomeres 3 and 4.
Thorax. Antepronotum bearing setae; remaining thoracic sclerites bare. Wing venation similar to others in the genus (e.g., Acomoptera digitata sp. n., Fig. 8); costal vein extends beyond R5, approx. 0.25× distance between R5 and M1; R1, R5, and M1, with at least some setae on lower surface.
Male Genitalia (Figs 2–3). Epandrium approx. 3× wider than long (Fig. 3F). Gonocoxites with dorsomedial comb (Figs 3A, 3C). Gonostylus complex, as shown in Figs 2, 3A–B, 3D–E.
Female unknown.
Etymology
The species epithet “crispa" is an adjective meaning curly in Latin, and refers to the long curved setae of the gonostylus.
Original Description
- Kerr, P; 2011: Six new species of Acomoptera from North America (Diptera, Mycetophilidae) ZooKeys, 137: 41-76. doi
Images
|
![Figure 1. Acomoptera crispa sp. n., habitus, lateral view [691239]. Scale line = 1 mm.](/wiki/File:ZooKeys-137-041-g001.jpg)
![Figure 2. Acomoptera crispa sp. n., male genitalia, images: A dorsal view [691235] B ventral view [691236] C lateral view [691237] D posterior view [691237]. Scale line = 0.1 mm. Abbreviations: cerc cercus epandepandrium gcx comb gonocoxal comb goncx gonocoxites gonst gonostylus v m gonst proc ventromedial gonostylus process.](/wiki/File:ZooKeys-137-041-g002.jpg)
![Figure 3. Acomoptera crispa sp. n., male genitalia, illustrated: A gonopods, dorsal view [691241] B gonopods, ventral view [691242] C gonocoxites, with gonostyli removed, posterior view [691244] D gonostyli, posterior view [691244] E gonopods, lateral view [691243] F epandrium, dorsal view [691240]. Scale line = 0.1 mm. Abbreviations: cerc cercus epand epandrium gcx comb gonocoxal comb goncx gonocoxites gonst gonostylus v m gonst proc ventromedial gonostylus process.](/wiki/File:ZooKeys-137-041-g003.jpg)
![' Figure 8.' Acomoptera digitata sp. n., wing, dorsal view [692360]. Scale line = 1 mm.](/wiki/File:ZooKeys-137-041-g008.jpg)
