Allometopon

Owen Lonsdale, 2016, Revision of the genus Allometopon Kertész (Diptera: Clusiidae), Zootaxa 4106 (1), pp. 1-127 : 65-66

Allometopon female 2

Figs 323, 324

Description. General: (Figs 323, 324) Body length 3.3–3.9mm. Arista short plumose. M1+2 ratio 3.7–4.4. First flagellomere subcircular. Male unknown.

Chaetotaxy: Three fronto-orbital setae, anterior seta 2/3 length. Ocellar seta approximately 1.5 times length of ocellar tubercle. Postvertical seta minute. Interfrontal seta minute. First flagellomere with longer hairs along distal margin. Anterior dorsocentral half length of posterior dorsocentral; closely set posteriorly. Acrostichal seta small, thin. One lateral scutellar seta.

Colour: Setae light brown to brown, yellow below anepisternal seta. Head yellow, yellowish-white below antenna excluding face and mouthparts; first flagellomere light yellow with dorsal half dark brown; ocellar tubercle dark brown; parafacial, gena and postgena silvery tomentose. Scutum yellow with long pointed medial stripe nearly attaining anterior margin; lateral margin with brown stripe from postpronotum to supra-alar region, excluding venter of postpronotum and sometimes anterolateral suture of notopleuron. Scutellum brown with corner yellowish to distinctly yellow. Metanotum yellow with mediotergite and posterodorsal corner of anatergite light brown. Pleuron and legs light yellow. Halter yellow. Wing lightly clouded with posterior margin and sometimes small subapical gap in cell R2+3 clear. Most of tergite 2 and tergites 3–6 with wide dorsal stripe, tergite 7 with narrower stripe; abdomen yellow past tergite 5 if basal half of arista white.

Female terminalia: Not dissected.

Distribution: Papua New Guinea.

Material examined: PAPUA NEW GUINEA. Central Province: nr Eiloga, 31.v.1981, rainforest, J.W. Ismay (1♀, AMSA), Morobe Province: Bubia, near Lae, 27.xii.1963, D.K. McAlpine (1♀, AMSA), Oro Province: Ongaho, Popondetta subdist., 28.x.1963, D.K. McAlpine (1♀, AMSA).

Comments: These females are superficially similar to Allometopon cavernosium ( Fig. 29 ), which has similar notal colouration and similar chaetotaxy, but the males of that species are otherwise dissimilar in colouration and may not be related. Allometopon cheiris ( Fig. 35 ) is also superficially similar, and also has no pigment on the back of the head, but confident associations with this species cannot currently be made.

Figures

FIGURES 29 – 34. Allometopon cavernosium spec. nov., holotype; 29: photo, dorsal; 30: photo, lateral; 31: external genitalia, left lateral; 32: same, posterior; 33: internal genitalia ventral; 34: same, left lateral.

FIGURES 35 – 39. Allometopon cheiris spec. nov., holotype; 35: photo, dorsal; 36: photo, lateral; 37: external genitalia, left lateral; 38: same, posterior; 39: internal genitalia, left lateral.