S. Mahunka szerk.: Folia Entomologica Hungarica 46/2. (Budapest, 1985)
Single male from Armenia has many deviations, notably the clearly bifid black spot on the eight tergite, the more incurving superior appendages and the completely differently formed inferior appendages. The intermediate appendages have more stout and- not so tapering black dorsal processes. More material is required, however, to decide about the specific nature of these deviations. Halesus digitatus caucasicus ssp. n. (Fig. 2) Male (in alcohol). General appearance is similar to the European specimens but with a much smaller size. Specimens from the Caucasus have a fore wing length-width of 17-6.4 and hind wing length-width of 15-8.2 mm. These figures for the Hungarian specimens are 24.4-8.3 for fore wing and 20.7-11.6 for hind wing. There are differences also in wing venation. Anastomosis differently formed. Apical cell number III. has a footstalk starting from almost middle of the cell base at H. d.caucasicus and from the upper third of cell base at H.d.digitatus . The cell base of cell number IV. is about three times larger than the cell base of cell number V. at H.d.caucasicus and nearly equal at H.d. digitatus . B Fig. 2. A.Halesus digitatus caucasicus ssp. n., B.Hale sus digitatus Schrank, 1. male genitalia;, lateral, 2. dorsal, 3. posterior, 4. phallus,ventral, 5. lateral, 6. anastomosis Male genitalia. Superior appendages much longer and triangular both in dorsal and apical aspects. Intermediate appendages more slender and on apex upwards curving. They are very narrow in apical view in H.d.caucasicus and very robust in H.d.digitatus . Aedeagus and parameres have a completely different arrangement. At the new subspecies the bifurcate apex is not hook-like and the membranous part overlaps the apices. Parameres more slender with three spines at their distal ends. The subspecific features of the Caucasian specimens were presented in comparison with a Hungarian population collected in the Zemplén mountain, 5. X. 1982. The first Halesus report from the Caucasus goes back to KOLENATI (1848) but his H. digitatus Schrank, 1781 was partly H. radiatus Curtis, 1834 (McLACHLAN, 1874-1883). This confusion made it impossible to determine
