Megaselia hojerensis, Henry & Bøggild, 2021

Henry, R. & Bøggild, Esben, 2021, Nineteen new species of Megaselia Rondani (Diptera, Phoridae) from Denmark, Zootaxa 4975 (2), pp. 306-342 : 319-321

Megaselia hojerensis n. sp.,

( Figs 97–107 ).

Diagnosis. In the keys of Lundbeck (1922) it runs to Group VI couplet 32 lead 2 M. impolluta (Schmitz), a synonym of M. sylvatica (Wood) , but its hypopygium is clearly different. In the key to the males of the British species ( Disney, 1989) it runs to couplet 232, but its hypopgium fits neither option. In Borgmeier’s (1966) key to Nearctic Group VII it runs to couplet 21 lead 2 M. postcrinata Borgmeier, but its costal index is only about 0.44.

Description. Male. Frons as Fig. 97 , with dense but very fine microtrichia. Cheek with 3 bristles and jowl with 2 that are longer and more robust. Postpedicels, without SPS vesicles, palps and proboscis as Fig. 98 , the labella lacking short spinules below. Thorax with 3 notopleural bristles and no cleft in front of these, and mesopleuron bare ( Fig. 99 ). Scutellum with an anterior pair of small hairs and a posterior pair of bristles. Abdomen as Fig. 100 , the gray venter with small hairs on segments 3–6. Hypopygium as Figs 101–103 , the hypandrium with a pale left lobe but no right lobe, and the epandrium has a bristle each side that is longer than the subequal hairs on the rest and those of the cerci, proctiger and at the rear of tergite 6. Legs yellow. Fore tarsus with posterodorsal hair palisade on segments 1–5 ( Figs 104 and 105 ). Dorsal hair palisade of mid tibia extends about 0.8 times its length. Hairs below basal half of hind femur longer than those of anteroventral row of outer half ( Fig. 106 ). Hind tibia with about a dozen differentiated posterodorsal hairs, without anterodorsals, and spinules of apical combs simple. Wings ( Fig. 107 ) 1.85 mm long. Costal index 0.47. Costal ratios 3.5: 1.8: 1. Costal cilia (of section 3) 0.12 mm long. Vein 3 hair 0.02 mm long. 4 axillary bristles, the outermost being 0.12 mm long. Sc not reaching R1. Haltere knob pale.

Type material. Holotype male, DENMARK, DK, SJ, Højer Sluse , 4–17.V.2017, Esben Bøggild ( UCMZ —9– 27).

Etymology. Named after the type locality

Figures

FIGURES 97–107. Megaselia hojerensis n. sp., 97, frons; 98, postpedicels, palps and prpboscis; 99, side of thorax; 100, left side of thorax and abdomen; 101, left view of hypopygium; 102, left hypandrium; 103, right view of hypopygium; 104, front tarsus; 105, segments 3–5 of front tarsus; 106, hind femur; 107, wing.