Allometopon

Owen Lonsdale, 2016, Revision of the genus Allometopon Kertész (Diptera: Clusiidae), Zootaxa 4106 (1), pp. 1-127 : 66-67

publication ID	https://doi.org/ 10.11646/zootaxa.4106.1.1
publication LSID	lsid:zoobank.org:pub:A5ADF236-5219-4014-9DC4-C43F981DD1A4
DOI	https://doi.org/10.5281/zenodo.6057251
persistent identifier	https://treatment.plazi.org/id/6866497B-F156-3436-FF39-A442F636FC2E
treatment provided by	Plazi
scientific name	Allometopon
status

Treatment

Allometopon View in CoL View at ENA female 4

Figs 327, 328

Description. General: (Figs 327, 328) Body length 2.7–3.7mm. Arista short plumose. M1+2 ratio 3.3–3.7. First flagellomere large, subcircular. Clypeus broad, thick. Male unknown.

Chaetotaxy: Three fronto-orbital setae with anterior seta slightly shorter. Ocellar seta twise length of ocellar tubercle. Postvertical seta absent. Interfrontal seta small. First flagellomere along distal margin with hairs as long as width of base of arista. Anterior dorsocentral half length of posterior dorsocentral; closely set posteriorly. Acrostichal seta small. Two lateral scutellar setae with anterior seta smaller.

Colour: Setae brown to dark brown. Head partially yellow, dirty white below antenna; first flagellomere brown; frons dark brown, with posterolateral corner yellow around base of vertical setae, orbital plate with irregular, mottled yellowish stripe, anteromedial region orangish, and with one pair of minute yellowish spots posterolateral to ocellar tubercle; back of head brown with venter yellow; inner margin of parafacial and venter of gena with shining dark brown line; face black to dark brown except for orange region between antennal bases and light yellow spot below antennae; clypeus dark brown; palpus brown with base yellowish; parafacial, gena and postgena silvery tomentose. Thorax dark brown (dorsum darker). Legs dark brown with apices of coxae yellow, trochanters yellow, base and apex of tibiae and femora narrowly yellow, tibiae paler brown, tarsi yellowish-white. Halter yellow. Wing lightly clouded, darker anterodistally. Abdomen dark brown to tergite 7, segment 8 not visible, segment 10 and cercus yellow.

Female terminalia: Not dissected.

Distribution: Papua New Guinea.

Material examined: PAPUA NEW GUINEA. Central Province: Musgrave R. near Pt. Moresby, 950 ft., 8.xii.1963, D.K. McAlpine (1♀, AMSA), East Sepik Province: Imbia, near Maprik, 19.xii.1963, D.K. McAlpine (1♀, AMSA).

Comments: These exceptionally dark females are characterized by an entirely dark thorax, a blackish face, mostly dark legs and a dark brown frons with an orange anteromedial spot and irregular yellow lateral stripe. They are likely related to Allometopon tenebrae ( Fig. 269 View FIGURES 269 – 274 ) or A. lunatum ( Fig. 137 View FIGURES 137 – 142 ) on the basis of similarities in chaetotaxy and the colour of the frons.