Ábrahám Levente (szerk.): Válogatott tanulmányok III. - Natura Somogyiensis 12. (Kaposvár, 2008)
Ábrahám Levente: Ascalaphid Studies VII. On the ascalaphid fauna of Taiwan (Neuroptera: Ascalaphidae)
Fig. 4: Lectotype of Hybris kolthoffi Navás, 1927 syn. nov. 555m 27-28.05.1997. leg. Cs. Szabóky; 20* Prov. Taitung; 4 km N of Tupau 390m 31.05.1997. 120°52'E;22°28'N leg. Cs. Szabóky; lO" Prov. Taitung; 3 km W of Hungyeh village 120°52 , E;22°28' N 350m 01.06.1997. leg. Cs. Szabóky; lO" Prov. Nantou; Uirsun Forest camping 17 km E of Kuoshing 560m 0607.06.1997. 121°00'E;24°05'N leg. Cs. Szabóky; 140" Prov. Nantou; Huisun Forest Area 500m 15 km N of Puli 07-08.06.1997. leg. B. Herczig & L. Ronkay; 40" Prov. Hsinchu; Nei Wan Mts. Litung-Scharf 1721.05.2004. leg. Jar. Dalihod & Jana Dalihodová Bastová Acheron trux is a widespread species in SE Asia. WALKER (1853) described four species {Ascalaphus trux Walker, 1853, Ascalaphus loquax Walker, 1853, Ascalaphus anticus Walker, 1853 and Ascalaphus longus Walker, 1853) which were combined with Acheron by MCLACHLAN (1873). Later, WEELE (1909) synonymised them with Ascalaphus trux. GHOSH (1988) re-examined the populations, revised the species from SE India and divided them into two taxa namely A. trux trux and A. trux loquax based on wing coloration. Since the wing-coloration is very variable from light brown to dark furthermore it depends on the age of specimens (as older as darker) additionally sexual dimorphism is significant in this species therefore the 2 subspecies needs revision. Ascalohybris kolthoffi (Navás, 1927) (original combination Hybris kolthoffi Navás, 1927) was known only from China (NAVÁS 1927) recently SZIRÁKI (2000) reported it from Taiwan. I checked the type material preserved in the Swedish Museum of Natural History (Stockholm) and found that Hybris kolthoffi Navás, 1927 is a junior synonym of Acheron trux (Walker, 1853). (Lectotype designation see above.) I asked Dr. Wang Xinli (China) to reidentify the specimens from China which were originally identified as Ascalohybris kolthoffi (Navás, 1927). She found that all specimens belong to Ascalohybris subjacens (Dr. Wang Xinli pers. comm.). It flies from May to October. Known from Bangladesh, Bhutan, Burma, Cambodia,
