S. Mahunka szerk.: Folia Entomologica Hungarica 49. (Budapest, 1988)

spine somehow separated from the second'part by a recurving junction. Between the lower, rather complex branch and the triangular upperlobe, there is unsclerotized flexible tissue visible only on the untreated genitalia. Inferior appendage forms a robust finger-like lobe with a heel-like basement. In ventral aspect its apical third regularly toothed with small irregular teeth below this part. The heel-like basement appears as a small inner process in j ventral aspect. Superior appendage triangular with a broad attachement to the tenth segment. Phallic apparatus forms a tube-like phallotheca with a sclerotized unpaired process on the • dorsum. Aedeagus a long rod with dilated apex and accompained with a short dorsal paramere. I According to the hind wing venation, the structure of the fifth and sixth abdominal segments as well as to the structure of genitalia this species belongs to the Synagapetus subgenus, "

rudis" group and "

mitis" subgroup. Similar heel-like formation on the inferior appendage has been found at A. foliatus Kimmins, 1953, A. incurvatus Kimmins, 1953 and A. tamrangensis Kimmins, 1964, but the lower branch of the tenth segment and the superior appendages differ from all species known. I named this species owing to its heel-like character of the inferior appendage. Heel: got giay in Vietnamese. Holotype ê. Tarn Dao, Vietnam, 1400 m, 13. X. 1986, leg. Oláh. Singled along the spring brook of the main stream from shore vegetation situated in a deep, steep valey of the: jungle. Paratypes. 3 6

1 adults and 3 6

1 metamorphotypes

, same data as for holotype. Deposited at the Zoological Department, Hungarian Natural History Museum, Budapest. Right pair of wing of holotype mounted as dry microscopic preparation. Caustic potash-treated abdomen of holotype and the remaining part of its bodv are stored in a single airtight vial filled with 70 % ethanol together with paratypes. Agapetus desom sp. n. (Fig. 3) Male (in alcohol). Animal was almost completely developed and pigmented inside the brown pupal cocoon. Wings were folded within the wingcases and venation was not hardened to its full size and form. The abdomen was, however, completely sclerotized. Fifth abdominal sternite with an unmodified lateral ridge and sixth sternite with a medium-sized, narrow apicomesal process. Fig. 3. Agapetus desom sp. n. - A= male genitalia, lateral, B= dorsal, C= ventral, D= phallic apparatus, lateral, E= fifth and sixth abdominal sternites, lateral Male genitalia. Ninth segment synsclerotized, apicoventrad produced and rounded anteriad. Dorsal lobe of tenth segment forms a long narrow plate with a more sclerotized longitudinal band which produces about midway a large tooth curving down- and outward. The rod-like ventral branch tripartite and back-jcurving. The last part is a movable spine. Superior appendage well developed, digitate, slighthly outcurving in dorsal aspect. Inferior ap-