S. Mahunka szerk.: Folia Entomologica Hungarica 43/1. (Budapest, 1982)

tow small colonies, always on sand in very dry places, were found. Alatiformity seems to be very rare in this species. I have seen only one specimen with normal scelrotic pattern, no trace of ocelli, but with secondary rhinaria on joints III and IV numbering 10-14 and 0-1, respectively. Type-material: Holotype (apt. viv. fern., slide no. 5615/apt. 1): Poland, steppe reservation Skowronno at Pinczów, 6. IX.

1976, coll. H. SZELEGIEWIC Z; Paratypes: 1) same data as holotype, 29 apt. viv. fern, and 20 ovip. fern., 2) steppe reservation Skorocice at Busko, 8.IX. 1976, 15 apt. viv. and 23 ovip. fern., 3) Warszawa-Bielany, 21. IX.

1965, 6 apt. viv., 5 ovip. fern, and one immature apterous male. The holotype and part of the paratypes in the Institute of Zoology i Polish Academy of Science, Warsaw; the paratypes also in the Hungarian Natural History Museum, Budapest, in the Entomological Institute, Czechoslovak Academy of Science, Prague, and in the coll. of Dr. H.L.G. STROYAN, Harpenden (England). Taxonomic notes: The specimens from Warsaw were shortly described and illustrated but not named in a previous paper (SZELEGIEWICZ 1966: 439, figs. 2-9). Apterae of the new species run to D. apiifolia petroselini (Börn.) in the key given by STROYAN (1963), but are much paler and without wax powdering, have the arms of the mesothoracic furca united, extremely short and blunt hairs on body and the appendages and a different chaetotaxy of cauda (6 or 7 hairs in 60% of specimens) and much shorter subsidiary hairs on the ultimate rostral segment. From the Hungarian D. peucedani sp.if., which lives also on Peucedanum oreoselinum, it differs by having much shorter siphunculi, united arms of the mesothoracic furca, shorter hairs on body and appendages and the much less extensive sclerotic pattern of dorsum. D. uralensis Shap., which was also described from Peucedanum, differs from the new species by having secondary rhinaria on joints III and IV, and separated arms of mesothoracic furca in apterae. Dysaphis peucedani sp.n. Alate viviparous female (one specimen) Morphological characters: Very similar to apterous vivipara, apart from sclerotization of head and thorax and the more extensive sclerotic pattern of abdominal dorsum which consists of a very extensive dorsal macula on abdominal segments 3-6 inclusive, small interrupted transverse bars on tergites 1 and 2, entire bands on tergites 7 and 8, and broad marginal sclerites on segments 2-4 inclusive which sometimes tend to fuse with central macula. Small, paired spinal tubercles present on head and tergite 8, a single one also on tergite 7. Very large, paired marginal tubercles on pronotum and much smaller ones on abdominal tergites 1-5, on tergites 6 and 7 only a single tubercle present. Antennae 6-jointed, about 0.75 of body length; processus terminális 4.3 times as long as basal part of joint VI. Secondary rhinaria rather tuberculate, present on joints III-V inclusive; III with 73-82, IV with 21-23, and V with 3-7. Ultimate rostral segment with 5 rather short subsidiary hairs. Colour in life as in apterous vivipare, but much darker. Measurements in mm: body 2.33, antenna 1.83, flagellar joints III-VI 0.59, 0.39, 0.20, 0.11+0.48, siphunculus 0.30, ultimate rostral segment 0.16, hind tarsal segment II 0.13. Host plant: Peucedanum oreoselinum (L.) Moench. Bionomy: The whole cycle and morphs other than viviparous not known. The aphids live on the roots of its umbelliferous host with ants attendance, Typ e - m a te r i a 1 : Holotype (one apt. viv. fem., slide no. 5707/apt. 1): Hungária, Lóhegy in the Csikihegyek at Budaörs near Budapest, 5.VI. 1977, coll. H. SZELEGIEWICZ; Paratypes: same data, 7 apt. and one al. viv. fern. The holotype and part of the paratypes in the Institute of Zoology, Polish Academy of Sciences, Warsaw, paratypes also in the Hungarian Natural History Museum, Budapest. Taxonomic notes: The apterae would key to Dysaphis bonomii (H.R.L.) in the key of STROYAN (1963), mainly because of the long siphunculi, but differs from this species in having no secondary rhinaria, longer hairs on body and antennae, a shorter rostrum with a comparatively longer ultimate segment (up to 1.3 times hind tarsal segment II in D. bonomii) and smaller tubercles in apterae, and by a different dorsal sclerotic pattern and more numerous secondary rhinaria in alate. The differences against D. oreoselini sp.n. are given under this species. Apparently this species was already recorded from Hungary by ANDRÂSFALVY (1978) under the name Dysaphis uralensis Shap. from Peucedanum alsaticum. The latter species, however, differs from D. peucedani sp.n. in having secondary rhinaria and shorter siphunculi in the apterae, and the lack of the solid dorsal macula, and fewer, not tuberculate secondary rhinaria in the alatae.