Megaselia jenshjerrildi, Henry & Bøggild, 2021

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

Megaselia jenshjerrildi n. sp.,

( Figs 108–120 )

Diagnosis. In the keys of Lundbeck (1922) it runs to Group IV couplets 36, or 45 lead 2 or 46 lead 2, but the hypopygia are all different. In the key to the males of the British species ( Disney, 1989) it runs to couplet 62, where likewise the hypopygia are different. In the key of Schmitz & Beyer (1965) for Abteilung IV Zweite Reihe it runs to couplet 20, where hypopygia differ, especially in having a long bristle as well as hairs on each side of the epandrium. In Borgmeier’s (1964) key to Nearctic Group IV it runs to couplet 17 lead 1 M. difficilis (Malloch) but it’s hypopygium and hind femur are different.

Description. Male. Frons as Fig. 108 , with microtrichia restricted to margins. Cheek with 5 bristles and jowl with 2 that are much longer and more robust. Postpedicels, without SPS vesicles ( Fig. 110 ), palps and proboscis as Fig. 109 , the labella with numerous short spinules below ( Fig. 111 ). Thorax brown with 3 notopleural bristles and no cleft in front of these, and mesopleuron with hairs ( Fig. 112 ). Scutellum ( Fig. 113 ) with an anterior pair of small hairs and a posterior pair of bristles. Abdomen as Fig. 114 , the venter with a few small hairs on segments 3–5 but several long hairs on 6. Hypopygium as Figs 115 & 116 . Legs brown to yellowish brown. Fore tarsus ( Fig. 117 ) with posterodorsal hair palisades on segments 1–4 and 5 dilated and broader than 4. Dorsal hair palisade of mid tibia extends about 0.64 times its length. Hind femur ( Fig. 118 ) with blunt spines in basal third ( Fig. 119 )marginally shorter than hairs of anteroventral row of outer half. Hind tibia with about 20 moderately differentiated posterodorsal hairs, without anterodorsals, and spinules of apical combs simple. Wings ( Fig. 120 ) 2.3 mm long. Costal index 0.49. Costal ratios 3.5: 2.1: 1. Costal cilia (of section 3) 0.15 mm long. Vein 3 hair 0.05 mm long. 6 axillary bristles, the outermost being 0.18 mm long. Sc not reaching R1. Haltere knob yellow ( Fig. 114 ).

Type material. Holotype male, DENMARK, DK, EJ, Onsild Mose , 21.V.–5.VI.2017, Esben Bøggild ( UCMZ — 9–19).

Etymology. Named after Jens Hjerrild, who works for the Government’s Nature Agency and suggested valuable sites for Esben’s malaise traps.

Figures

FIGURES 108–120. Megaselia jenshjerrildi n. sp. male, 108, frons; 109, postpedicels (110), palps and proboscis; 111, Proboscis from below; 112, side of thorax; 113, scutellum; 114, abdomen and Haltere; 115, left face of hypopygium; 116, right face of hypopyium without anal tube; 117, front tarsus; 118, hind femur; 119, base of hind femur; 120, wing.