S. Mahunka szerk.: Folia Entomologica Hungarica 32/1. (Budapest, 1979)

A thorough examination of the holotype of O. monticola Szépl. , a comparision of it with O. instabilis Wesm. (3 o_, det. Fischer) and O. subsimilis (q holotype and 1 g paratype) led me to the conclusion that the name O. monticola represents but a valid species, i. e. it is not identical with O. instabilis. The three species are distinguished by the following features: Q. instabilis Wesm. 1. Mandible below at its base with a subtooth. 2. First tergite 1.2-1.3 times as long as wide at hind; its hind width at most 1.5 times greater than its fore one, i.e. its sides normally diverging posteriorly. 3. Temple (inlateral view) less wide than eye 4. Ovipositor sheath (in lateral view) at most as long as hind half tibia. 5. Abdomen blackish brown; tergites 2-3 usually brownish yellow. O. monticola Szépl. 1. Mandible below at its base without any subtooth. 2. First tergite as long as wide at hind; its hind width twice greater than its fore one, i. e. its sides strongly diverging posteriorly. 3. Temple as wide as eye. 4. Ovipositor sheath as long as hind tibia. 5. Abdomen, together with tergites 2-3, blackish brown. O. subsimilis Fi. 1. Mandible as in O. mon ticola. 2. First tergite at most 1.1-1.2 times as long as wide at hind; its hind width less than twice as great as its fore one, i.e. its sides normally diverging posteriorly. 3. Temple less wide than eye. 4. Ovipositor sheath at most as long as hind half tibia. 5. Abdomen as in O. monticola. Remarks. - 1. The female holotype of O. monticola Szépl. is deposited in the Hungarian Natural History Museum, Budapest; Hym. Typ. No. 2428, its data: Budapest, Sashegy, 17 June 1896. - 2. The female holotype and one female paratype of O. subsimilis Fi. were kindly loaned to me for examination by M. FISCHER (Wien). Opius (Pendopius) moravicus Fischer, 1960 Very similar to O. (P. ) exilis Hal. , the main difference between the two species is that n. rec. interstitial in O. moravicus and postfurcal in O. exilis. My male specimen was compared with the holotype kindly lent to me by Mr. P. MIKULA (Narodni Muzeum, Praha). Ground colour of abdomen yellowish brown, hind half of tergites 3-7 with brown streaks. Distribution: Czechoslovakia, new to the fauna of Hungary. The new record is the second specimen and locality of this species. Locality: Börzsöny Mts., Gál-rét (Diósjenő), 1 6, - LX. Opius (Nosopoea) mundus Förster, 1862 A conspicuous feature of this species is the dense, long and golden hairs of face. Antenna 28 jointed. According to the description (FISCHER, 1973) first tergite 1.5 times as long as broad at hind, that of the single Hungarian specimen, on the other hand, as long as wide, its sides strongly widening behind. - Distribution: sporadically in England, Germany, Czechoslovakia. New to the fauna of Hungary. Locality: Németbánya, Jágervölgy, 1 g. - VII. Opius (Misophthora) nigrithorax Fischer, 1958 First tergite hardly one-fifth longer than wide at hind (20:17, xlOO), its two keels gradually merging into the uneven surface. r3 twice longer than r2 (60-65:30, xlOO), Cu2 elongated. Very characteristic for the species-group of O. basirufus Fi.

, O. bulgaricus Fi. , O. nowakowskii Fi. and O. similis Szépl. within the subgenus Misophthora that their mandible gradually broadening basally except O. nigrithorax having a subtooth at lower base of mandible. Antenna 25 jointed. Ovipositor sheath as long as or somewhat longer than first tergite. Body 1.7-1.9 mm long. Head, thorax and first tergite black, abdomen yellow or brownish yellow. Face almost entirely yellow (1 p, Olaszfalu). - Distribution: up to now known only its female holotype described from Hungary. The above new Hungarian localities were recorded recently, outside Hungary unknown. Localities: Hárskút, 1 p. Olaszfalu, Alsópere, 2 p. Omassa, Lonci rét, 1 p. Velem, Vid-hegy, 1 p_. - VIVII. H4