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

remained in the original position situated well before the tenth segment and seemingly freely suspending on the phallic apparatus. In untreated condition it must be fixed by musculature. According to the hind wing venation, the structure of 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. Its tenth segment and inferior appendages well differentiate it from all known species of the subgroup. I gave its name referring to the whiplike process on the tenth segment. Whip: danh bang roi in Vietnamese. Holotype 6

1

. 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. Deposited at the Zoological Department, Hungarian Natural History Museum, Budapest. Right pair of wings mounted as dry microscopic preparation. Caustic potash-treated abdomen and the remaining part of the body are stored in a single airtight vial filled with 70 % ethanol. Male (in alcohol). General colour brown. Wing membrane brown, hairs darker. On fore wing small whitish hyaline area along the costal tip of Sc, along the upper half of cross vein r-m, below the distal half of stem M and at the costal tip of Cu

2

. On hind wing R^ ending on Sc at around anastomosis position, cross-vein r linking Rj and R2+3 present. Sc long, ending on C well beyond anastomosis, fork 1 absent. Length and largest width of fore wings 3-1.1, those of hind wings 2.4-0.7 mm. Fifth abdominal sternite with an unmodified lateral ridge and sixth sternite with a moderately long, narrow apicomesal process. Fig. 5. Agapetus kongcanxing sp. n. - A = male genitalia, lateral, B= dorsal, C= ventral, D= phallic apparatus, lateral, E= fifth and sixth abdominal sternites, lateral Male genitalia. Ninth abdominal segment forms a complete ring even on the dorsum. Laterally subtriangular without a narrow anterior apodeme. The upper body of tenth segment produces a well-chitinized downcurving process or ridge ending and an underimposed plate upcurving basad. The basal part of the tenth tergite less sclerotized beyond the upcurving plate even empty. The ventral branch of the tenth segment forms a caudad directed straight rod which continues with a visible suture in an up- and anteriorly curving flattened process. This process is small on the left and very large on the right side. Inferior appendages subrectangular in lateral aspect. Superior appendages well developed up- and outcurving. Phallic apparatus consists of a well-developed tube-like phallotheca with a more sclerotized long dorsal process. Inside starting from phallobase there is a short unpaired dorsal paramere and the long rod-like aedeagus with a subclavate tip. Female. Distinctly widened and flattened tibiae and tarsi on midlegs present. Fifth abAgapetus kongcanxing sp. n. (Fig. 5) D