Heteromeringia macropa, Lonsdale, 2009

Lonsdale, Owen, 2009, The Heteromeringia (Diptera: Clusiidae: Clusiodinae) of Australia, Records of the Australian Museum 61 (3), pp. 229-262 : 250

Heteromeringia macropa n.sp.

Figs 50–53 , 101

Type material. HOLOTYPE: New South Wales: Upp. Kangaroo Riv. Nr. Yeola, 200 m, ex. rotting sticks on rainforest floor, coll. 3–4.iii.1983, Emg. 11.iii.1983 J.F. Lawrence (1♂, ANIC) , PARATYPES: New South Wales: 3km N Lansdowne , 12.xii.1992, G.Williams, ex. Cuttsia viburnea flowers, subtropical rainforest (1♂, AMS) , Upp. Kangaroo Riv. Nr. Yeola, 200 m, ex. rotting sticks on rainforest floor, coll. 3–4.iii.1983, Emg. 11.iii.1983 J.F. Lawrence (2♂♂, ANIC) , Emg. 20–30.iii.1983 (3♂♂ 1♀, ANIC) , Emg. 14.iii.1983 (1♂ 1♀, DEBU; 1♂, USNM, 1♂, ANIC) .

Description

Male. Body length 2.8 mm. Anepisternal disc present. First flagellomere orbicular. Bristles black. Arista closely pubescent.Vibrissa relatively long and curved. Ocellar bristle thin and longer than tubercle. Two dorsocentral bristles with small bristle in front of anterior dorsocentral. Gena shallow and not strongly angled or bent. Face and buccal cavity pilose and meeting at an angle. Frons brown on posterior half and along lateral margins of anterior half; anterior 3 ⁄ 5 of frons tomentose; clypeus brown; occiput, back of head, ventral and posterior margins of gena and palpus dark brown; lateral margin of face with thin brown line; first flagellomere with anterior margin and distal 1 ⁄ 3 of inner face brown; gena pilose. Thorax dark brown. Legs yellow with fore tarsi, fore tibia and apex of fore femur dark brown. Fore tarsi slightly compressed laterally. Abdomen brown. M 1+2 ratio 9.0. Wing dusky. Halter brown with distal surface white.

Female. As described for male except frons entirely dark, gena more darkly pigmented and face and parafacial dark brown.

Male terminalia ( Figs 50–53 ). Epandrium with length shorter than height and slightly more than half width. Surstylus higher than wide with sides parallel, apex pointed and inner face with two or three apical tubercle-like bristles. Cerci setose medially and apically, sides nearly parallel and apex emarginate. Hypandrium+pregonite with two small diverging lobes; posterior lobe truncated and setulose apically; anterior lobe with two stout apical bristles and ventral margin contiguous with single raised row of setulae continuing along lateral surface. Distiphallus with one rib ending medially and one rib trifid on distal half with several lateral spines.

Female terminalia (Fig. 101). Sternite and tergite 8 entirely fused with small posteromedial emargination ventrally. Spermatheca barrel-shaped and invaginated apically.Ventral receptacle curved and with subterminal flagellum straight and long.

Etymology. As several of the types were collected at Kangaroo River, the specific name is derived from the genus name for terrestrial kangaroos ( Macropus ).

Figures

Figures 47–57. Figs 47–49: male terminalia, Heteromeringia laticornis McAlpine; (47) external, left lateral; (48) external, posterior; (49) hypandrial complex, left lateral. Figs 50–53: male terminalia, Heteromeringia macropa n.sp.; (50) external, left lateral; (51) external, posterior; (52) phallapodeme and phallus, anterior; (53) hypandrial complex (distal portion of distiphallus removed), left lateral. Figs 54–57: male terminalia, Heteromeringia magnicauda n.sp.; (54) external, left lateral; (55) external, posterior; (56) phallus, anterior; (57) hypandrial complex (distal portion of distiphallus removed), left lateral. Scale bar = 0.25 mm.