. British journal of entomology and natural history. Natural history; Entomology. BR. J. ENT. NAT. HIST., 5: 1992. Figs 22-23. Male genitalia of Mycomya frequens Johannsen. 22, ventral view; 23a, tergite 9 and cerci; 23b, posterior view of tergal lateral appendage. Mycomya (Mycomyopsis) permixta Vaisanen, 1984 A new record for this Scottish species: Inverness, Grantown, birch and aspen woods on south bank of Spey, , 2 males (P. J. Chandler). Mycomya (Lycomya) pectinifera Edwards, 1924 The south western distribution (Cornwall and Somerset) (Chandler, 1987a) has been filled out by new
. British journal of entomology and natural history. Natural history; Entomology. BR. J. ENT. NAT. HIST., 5: 1992. Figs 22-23. Male genitalia of Mycomya frequens Johannsen. 22, ventral view; 23a, tergite 9 and cerci; 23b, posterior view of tergal lateral appendage. Mycomya (Mycomyopsis) permixta Vaisanen, 1984 A new record for this Scottish species: Inverness, Grantown, birch and aspen woods on south bank of Spey, , 2 males (P. J. Chandler). Mycomya (Lycomya) pectinifera Edwards, 1924 The south western distribution (Cornwall and Somerset) (Chandler, 1987a) has been filled out by new records from 15 wooded sites in north Devon in and (several collectors), where it was often frequent by streams, and Dorset, Woolcombe, (C. M. Drake). It remains unknown in Britain outside the four south western counties. Polylepta boreal is Lundstrom, 1912 New to Britain. This is very similar to P. guttiventris, differing most obviously in the entirely dark grey dusted abdomen (small basal yellow markings on tergites 2-5 in guttiventris). Both species have the thorax mainly grey dusted, with humeri, anterior spiracles, pedicel and basal part of first flagellar segment (more broadly in guttiventris), palpi, halteres and legs yellow (only hind coxae darkened externally); fore metatarsus sUghtly longer than fore tibia and a swollen (? sensory or glandular) area near the base of the male middle tibia. The similar tibial swelhng in guttiventris was figured by Chandler (1977). This swelling is proportionately longer in borealis, occupying almost the basal third of the tibia (Figure 25) while it includes only about the basal quarter in guttiventris. There are also differences in the male genitalia (Figure 24). The specimen examined has a wing length of Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resembl
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