Megaselia utsjokiensis, DISNEY & WINQVIST, 2018

DISNEY, R. Henry L. & WINQVIST, Kaj, 2018, New records including new species of Megaselia Rondani and Triphleba Rondani (Diptera: Phoridae) from Finland, Fragmenta Faunistica 61 (1), pp. 11-33 : 27-28

Megaselia utsjokiensis n. sp.

( Figs 71–80 )

Dia gno s is (male). In the keys to British species ( Disney 1989) it runs to couplet 275, lead 1 to M. cinerea Schmitz. It is immediately distinguished by having 3, not 2, bristles on the notopleuron, numerous SPS vesicles in the postpedicel and a much longer labrum.

Male. Frons as Fig. 71 and with dense but very fine microtrichia. Cheek with 4 bristles and jowl with two that are much longer and more robust. Postpedicels with SPS vesicles ( Fig. 73 ). Palps and proboscis as Fig. 72 . Thorax brown. Three notopleural bristles, the middle one being shorter that the other two ( Fig. 74 ). Mesopleuron bare ( Fig. 74 ). Scutellum with an anterior pair of hairs and a posterior pair of bristles. Abdominal tergites brown with numerous hairs that are longest at the rear of T6. Venter gray, and with hairs on segments 3–6. Hypopygium as Figs 75– 77 . Legs brown but parts of front legs yellowish brown or paler. Fore tarsus as Fig. 78 . Dorsal hair palisade of mid tibia extends about 0.5–0.6 times its length. Hind femur as Fig. 79 . Hind tibia with about two dozen weakly differentiated posterodorsal hairs, without anterodorsals, and spinules of apical combs simple. Wings ( Fig. 80 ) 2.43 mm long. Costal index 0.52. Costal ratios 3.2: 1.5–1.6: 1. Costal cilia (of section 3) 0.17 mm long. Hair at base of vein 3 minute. With 5 axillary bristles, the outer being 0.19 mm long. Sc reaching R1. Haltere brown.

Mat eria l e xa mi ned. Holotype male, Finland, LI: Utsjoki, Galddasjohka, 7764156: 3536707, 13 Jul–25 Aug 2016, J. Salmela leg. (Malaise trap) (5/16, ( UCMZ, 39-83).

E t y m o l o g y. From the type locality of the holotype.

Figures

Figs 71–74. Megaselia utsjokiensis n. sp. male: 71 – frons and postpedicels; 72 – postpedicelds, palps and proboscis; 73 – postpedicel showing SPS vesicles; 74 – left face of thorax.

Figs 75–80. Megaselia utsjokiensis n. sp. male: 75–77 – hypopygium; 78 – front tarsus; 79 – hind femur; 80 – wing.