Megaselia anniduedahlae, Henry & Bøggild, 2019

Henry, R. & Bøggild, Esben, 2019, Fourteen new species of scuttle flies (Diptera, Phoridae) from Denmark, Zootaxa 4543 (1), pp. 63-89 : 63-65

Megaselia anniduedahlae sp. n.

( Figs 1–10 )

Material examined. Holotype male, DENMARK, Dk EJ, Nørre Onsild mose (= bog), 7–24.vi.2017, Esben Bøggild (CUMZ-8-183).

Description. Male. Frons brown as Fig. 1 , with dense but very fine microtrichia. Cheek with 4 bristles and jowl with 1 that is longer. Postpedicels, which lack SPS vesicles, palps and proboscis as Fig. 2 . Proboscis from below as Fig.3 . Thorax brown. Three notopleural bristles and no cleft in front of these. Mesopleuron bare. Scutellum with an anterior pair of small hairs and a posterior pair of bristles. Abdominal tergites brown with numerous hairs that are longest at rear of T6 ( Fig. 4 ). Venter brownish gray, and with hairs on segments 3–6. Hypopygium as Figs 4–5 . Legs brown. Fore tarsus with posterodorsal hair palisade on segments 1–4 ( Figs 6–7 ). Dorsal hair palisade of mid tibia extends about 0.79 times its length ( Fig. 8 ). Hind femur as Fig. 9 . Hind tibia with 15–16 differentiated posterodorsal hairs of which half are more robust and strongly differentiated, without anterodorsals, and spinules of apical combs simple. Wings ( Fig. 10 ) 1.69 mm long. Costal index 0.50. Costal ratios 3.15: 2.40: 1. Costal cilia (of section 3) 0.08 mm long. No hair at base of vein 3. With 2 unequal axillary bristles, the outer being 0.11 mm long. Sc raching R1. Haltere brown.

Recognition. In the key of Lundbeck (1922) it runs to Group VI couplet 5 lead 2 M. merochaeta (Lundbeck), a synonym of M. prodroma (Lundbeck) , which differs in having only 2 bristles on the notopleuron plus a notopleural cleft. In the key to the males of the British species ( Disney, 1989) it runs to couplet 193 lead 1, which sends one back to couplet190, lead 1 M. flava (Fallén) but its hypopygium is very different. Etymology. Named after Anni Duedahl the owner of the type locality.

Figures

FIGURES 1–10. Megaselia anniduedahlae sp. n. male (Figs 1-10). 1. Frons. 2. Postpedicels, palps and proboscis. 3, proboscis from below. 4, left face of hypopygium. 5. Right face of hypopygium. 6. Front leg. 7. segments 4 and 5 of front tarsus. 8. mid tibia. 9. Hind femur. 10. Wing.