Moesz Gusztáv - Soós Lajos (szerk.): A Magyar Természettudományi Múzeum évkönyve 28. (Budapest 1934)

Hungerford, H. B. ; Evans, N. E.: The Hydrometridae of the Hungarian National Museum and other studies in the family. (Hemiptera)

26. Venter of sixth abdominal segment of male straight at least not definitely transversely concave (27) Venter of sixth abdominal segment of male fransversely concave (31). 27. Caudolateral angles of genital segment of male as viewed from above prominent II. lineata ESCHSCH. Caudolateral angles of genital segment of male not proniinent (28). 28. Venter of sixth abdominal segment of male with two well defined liair patches H. Maidli sp. n. ^ enter of sixth abdominal segment of male more or less hairy but not as above (29). 29. First antennal segment surpassing jugae by more than half its length II. albolineata SCOTT. First antennal segment not surpassing the jugae by more than half its length (30). 30. Clypeus bluntly rounded. Caudal process of female near one-third length of its segment H. strigosa SKUSE. Clypeus pointed. Caudal process of female near one-half the length of the segment //. insularis sp. n. 31. Caudal process more than one-fourth the length of its segment in the male (32). Caudal process less than one-fourth the length of its segment in the male (55). 32. Transverse depression of sixth ventral of male deep ... (33). Transverse depression of sixth ventral of male shallow (34). 33. Clypeus pointed H. Greeni sp. n. Clypeus blunt H. Isaka sp. n. 34. Transverse depression of sixth ventral of male shallow H. aegyptia sp. n. 35. Caudal process less than one-fourth the length of last segment of male H. Maindroni sp. n. 36. Two ..chitinized" tubercles on theanterior margin of sixth ventral segment of male. The sixth abdominal and first genital segments curved as.seen from the side H. longicapitis BUENO. Four ,,chitinized" tubercles on the anterior margin of sixth ventral segment of male H. madagascarensis sp. n.