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)

Ilie holotype and allotype ehosen from the W. Sumatra series and are in the Museum at Vienna, Austria. Paratypes are in the U. S. National Museum and in the Kansas University Museum. ISf o t e s. This species is closely related to H. Maidli sp. n. from which it differs in the shape of the terminal segments in both sexes and in having the femora relatively shorter. From H. lineata ESCHSCH. both of these species are easily separated by the shape of the male genital segment as viewed from above (see figures), from H. Greeni KIRK. by having the ventral surface of the last abdominal segment in the male concave, and from //. albolineata SCOTT which has the ventral surface of the last abdominal segment of the male smooth and shiny. Hydrometra Greeni KIRKALDY. (PLATE VII). Hydrometra greeni KIRKALDY, G. W., THE ENTOMOLOGIST, VOL. XXI, P. 2, 1898. Dr. KIRKALDY deseribed this species from a female collected by E. ERNEST GREEN in May 1897 at Punduloya, Ceylon. The remnants of this type are in the U. S. National Museum. The head and five of the legs are gone. We have compared specimens from Peradeniya and Henaratgoda, Ceylon, with the female type (which may be designated the holotype) and f ind them to be the same species. A male taken at Pasumalai, South India by J. LAWSON is also this species. One male of the above series is described and figured as the allotype of H. Greeni and the other males are labeled parallotypes. There are three specimens in the iiungarian National Museum labeled „Chikkaballapura, S. India, T. V. C." Dr. E. BERGROTH (1) 1915, who examined specimens from four dif ferent places in Ceylon, including Punduloya (the original locality) gave some helpful notes of comparison between this species and H. lineata ESCHSCH. He notes that the white longitudinal line of the hemelytra in H. lineata ESCHSCH. is only twice very narrowly interrupted by the black transverse veinlets behind the middle whereas in /7. Greeni KIRK. the white line is four to six times, often broadly interrupted. He also noted that H. lineata ESCHSCH. males could be distinguished by the „tricuspidate" apex of the male genital segment as seen from above and the H. Greeni KIRK. males by the sinuate ventral margin of the last abdominal segment as seen in profile. We may add that the females of H. Greeni KIRK. have the last dorsal abdominal segment broader behind than in front which is not the