Megaselia fayesgadeensis, Henry & Bøggild, 2021

Henry, R. & Bøggild, Esben, 2021, Nineteen new species of Megaselia Rondani (Diptera, Phoridae) from Denmark, Zootaxa 4975 (2), pp. 306-342 : 316

Megaselia fayesgadeensis n. sp., ( Figs 73–81 , 238 )

Diagnosis. In the keys of Lundbeck (1922) it runs to Group VII couplet 9 lead 2 M. virilis (Schmitz), which is immediately distinguished by its 3 notopleural bristles and some anterodorsal bristles on the outer half of the hind tibia. In the key to the males of the British species ( Disney, 1989) it runs to couplet 217 lead 1 M. brevior Schmitz. It belongs to a complex since revised ( Disney, 2006). In its key it runs to couplet 4 lead 2 M. brevissima, but its costal index is only 0.30 and it has only 2 axillary bristles. In this complex M. intersecta Schmitz is only known from the female, but its costal index is only 0.31–0.32. The male of M. exsecta Schmitz is too poorly described to covered by the key, but its hairs of the proctiger are longer than those of the cerci and its costal index is only 0.32. Otherwise it fails to run down in keys for the rest of the world’s fauna and subsequent additions.

Description. Male. Frons as Fig. 73 , largely lacking fine microtrichia. Cheek with 4 bristles and jowl with 2 that are longer and more robust. Postpedicels, with numerous SPS vesicles ( Fig. 75 ), and palps Fig. 74 , the labella with numerous short spinules below. Thorax brown. Two notopleural bristles and no cleft in front of these. Mesopleuron bare. Scutellum with an anterior pair of hairs and a posterior pair of bristles. Abdomen as Fig. 76 , with small hairs which are not longer at rear of T6, and venter gray with hairs on segments 3–6. Hypopygium as Figs 77–79 , the hypandrial lobes being very short. Legs yellowish brown. Fore tarsus ( Fig. 80 ) with posterodorsal hair palisade on segments 1–4. Dorsal hair palisade of mid tibia extends about 0.67 times its length. Hairs below basal half of hind femur longer than those of anteroventral row of outer half ( Fig. 81 ). Hind tibia with about two dozen differentiated posterodorsal hairs that are more robust on outer two thirds, without anterodorsals, and spinules of apical combs simple. Wings (fig 238) about 1.43 mm m long. Costal index about 0.37. Costal ratios 5: 1.1: 1. Costal cilia (of section 3) 0.07 mm long. Vein 3 hair 0.01 mm long. With 3 axillary bristles, the outermost being 0.13 mm long. Sc not reaching R1. Haltere knob yellow

Type material. Holotype male, DENMARK, DK NEJ, Hobro , at window, 8.VII.2018, Esben Bøggild ( UCMZ — 9–24).

Etymology. Named after Fayesgade, Esben Bøggild’s place of residence.

Figures

FIGURE 238. Megaselia fayesgadeensis n.sp., male, right wing, dorsal.

FIGURES 73–81. Megaselia fayesgadeensis sp. n. male. 73, frons; 74, postpedicels and palps; 75, postpedicels; 76 abdomen; 77, left face of hypopygium; 78, left face of epandrium and hypandrium; 79, right face of hypopygium; 80, front tarsus; 81, hind femur.