S. Mahunka szerk.: Folia Entomologica Hungarica 30/2. (Budapest, 1977)
Vertex slightly produced In the middle, rounded anteriorly. Upper side of face, vertex and anterior margin of pronotum, testaceous. Lower part of face, centre and centre of hind part of pronotum testaceous-ochre. Sides of pronotum testaceous with whitish areas. Two fuscous points on sides of vertex, each of them accompanied with a semilunar whitish patch in front of. Basal triangles and apical part of scutellum greyish. Centre of scutum and anterior part of scutellum Ivory. Eyes dark brown. Fore wing semitransparent, greyish. Clavus, a part of cu cell and subcostal part of corium, greyishochre (the clavus much darker); veins ochreous. Male genital apparatus resembles that of A. hachijonis Mats. (Figs. 21, 22) but anal tube appendage bifurcated at tip (Figs. 23, 25) and penis stem in side view quite differenc (Fig. 27). Length â 3.4 mm. Holotype male, Prov. Lao-cai, Sa-pa, 1650 m., grassy place, atlight, Sep. 23, 1963, coll. T. Pócs . Jacobiasca Dworakowska, 1972 Jacobiasca Dwor. has been described as a subgenus of Austroasca Lower (Dworakowska, 1972 b). The comparative studies show however greater differences between Austroasca Lowerand Jacobiasca Dwor. than between Jacobiasca Dwor. and Afroccidens Ghauri (Ghauri, 1969) or Kyboasca Zachv. The most characteristical features for these three genera are: structure of base of abdomen, the paramere and the anal tube. Jacobiasca boninensis (Mats., 1931) 1 a, Prov. Nghe-An, semideciduous tropical forest Quy-chau, 200 m., atlight, Aug. 25, 1963, coll. T. P 6cs . Jacobiasca prosta sp.n. (Figs. 31-40) Body more robust in comparison with J. boninensis (Mats.). Face brownish-testaceous. Vertex ochre-testaceous with whitish-testaceous bordering of coronal suture and two oblique streaks at sides. Pronotum and hind part of scutellum dark testaceous. Basal triangles light grey. Whitish pattern consists of a narrow longitudinal streak In the midline of frontoclypeus, borderlngs of lateralfrontal sutures, two patches just behind eyes on pronotum, very broad streak in the centre of scutum and transverse stripe in anterior part of scutellum. Ocelli brownish. Eyes dark brown. Fore wing light testaceous, semitransparent; apical part slightly smoked, veins light. The most distinctive feautre in male genital apparatus is long and simple pygophore appendage (Figs. 36, 37). The appendage is serrated at apex. Subgenital plate (Fig. 32) broad. Penis stem in side view (Fig. 33) narrowing apically; expanded laterad (Fig. 34). Central tooth in connective not visible (Fig. 38). There are two macrosetae on 9th abdominal sternite of a male (Fig. 40). Length o" 3.0 mm . Holotype male, Prov. Nghe-An, semideciduous tropical forest Quy-chau, 200 m., atlight, Aug. 25, 1963, coll. T. Pócs. A m r as ca Ghauri, 1967 Amrasca blguttula (Ishida, 1913) 2^ç, Hanoi, atlight, Aug. 7; lcf, lç, same locality, Aug. 9; lcf, l<j>, Aug. 10; 4^, Sep. 11; Id, ^Sep. 13; 2£ü Oct. 2; 1«?, lç, Oct. 3; 1?, Oct. 4; Id 1 , lo, Oct. 30; lç, Nov. 1: lo, Prov. Ha-Tinh, tropical forest Hüöng-sön, 150 m., atlight, Aug. 19; lg, Ha-long bay, Hong-gal, 0-10 m., atlight, Sep. 8. All collected In 1963 by T. Pócs. Some specimens are not fully coloured and without distinct black patches on vertex. Amrasca splendens Ghauri, 1967 Id", Hanoi, atlight, Aug. 30; lcf, Prov. Lao-cai, Sa-pa, 1650 m., grassy place, at light, Sep. 23; 1 o, Prov. Ha-Tinh, tropical forest Hüöng-sön, 150 m., at light, Aug. 18. All collected by T. Pócs in 1963.
