Heteromeringia digitula, Lonsdale, 2009

Lonsdale, Owen, 2009, The Heteromeringia (Diptera: Clusiidae: Clusiodinae) of Australia, Records of the Australian Museum 61 (3), pp. 229-262 : 241

Heteromeringia digitula n.sp.

Figs 13 , 41–43

Type material. HOLOTYPE Queensland: 12.44S 143.14E, 3km ENE Mt. Tozer , 28.vi–4.vii.1986, D.H.Colless (1♂, ANIC) . PARATYPES Queensland: 12.44S 143.14E, 3km ENE Mt. Tozer , 28.vi–4.vii.1986, D.H. Colless (1♀, ANIC), Malaise trap, ethanol (1♀, DEBU) .

Description

Male. Body length 3.3–4.3 mm. Anepisternal disc present. First flagellomere orbicular. Bristles brown. Arista pubescent. Vibrissa relatively long and curved. Ocellar bristle minute. Two dorsocentral bristles. Gena shallow and not sharply angled. Head yellow with first flagellomere infuscated on distal half of inner face, ocellar tubercle brown, gena with small medial rusty spot, anterior half of occiput and upper half of gena light yellow and silvery tomentose, upperposterior half of occiput dark brown, back of head with one pair of dorsolateral spots and base of palpus whitish; frons tomentose. Thorax yellow with two very thin postsutural stripes (along dorsocentral rows, continuing onto scutellum), faint posterolateral spots, orange tint in posterolateral corner of scutum, thin sub-scutellar stripe on laterotergites and orange mottling on pleuron. Legs yellow with fore tibia and tarsi dark brown (knee yellow), coxae light yellow to white, and fore femur with oblique dark brown inner-distal spot. Fore tarsi strongly compressed laterally.Abdomen dark brown with segments 1 and 2 yellow. Wing dusky along anterodistal margin at R 2+3 and R 4+5. Halter white.

Female. As described for male except as follows: first flagellomere entirely yellow; spots on back of head only present near margins; tergites 1–4 yellow with dark medial stripe and tergite 4 also with posterolateral spot; tergite 8 (infuscated anterodorsally) and terminalia yellow; wing clear around R 4+5 and lightly clouded around M 1 past r-m.

Male terminalia ( Figs 41–43 ). Epandrium width nearly twice length and height. Sides of cerci nearly parallel; with deep medial emargination. Surstylus subquadrate with length and height approximately 2 ⁄ 3 that of epandrium; inner-distal margin lined with tubercle-like bristles. Phallapodeme nearly as long as hypandrium. Hypandrium+pregonite divided into thin anterior lobe with one stout bristle and wider posterior lobe with numerous setulae. Basiphallus with thin posterobasal lobe. Ribs of phallus nearly equal in length with one rib bifid apically and one rib pointed and sharply recurved medially.

Figures

Figures 9–16.Eggs.(9) Heteromeringia trisetosa n.sp.; (10) H.hardyi McAlpine; (11) H. spinulosa McAlpine; (12) H.bisetosa n.sp.; (13) H. digitula n.sp.; (14) H. laticornis McAlpine; (15) H. australiae Malloch; and (16) H. hypoleuca McAlpine.

Figures 38–46. Figs 38–40: male terminalia, Heteromeringia hypobrunnea n.sp.; (38) external, left lateral; (39) external, posterior; (40) hypandrial complex, left lateral. Figs 41–42: male terminalia, H. digitula n.sp.; (41) external, left lateral; (42) external, posterior; (43) hypandrial complex, left lateral. Figs 44–46: male terminalia, H. hypoleuca McAlpine; (44) external, left lateral; (45) external, posterior; (46) hypandrial complex, left lateral. Scale bar = 0.25 mm.