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)

Abdomen: No processes on the sixth segment; in dorsal view the general appearance of the seventh segment of the male is quite pointed, the sides of the segment being somewhat concave; on the ventral side of the seventh abdominal segment of the male, on each side of the median longitudinal line, is a hairy elevation near the posterior margin; the terminal dorsal spine of the male is long, stout, and sharp. about one-fourth as long as the segment; the terminal spine of the female is very sharp and prominent, about one-half as long as the segment. The holotype bears the following label: „Kortwright, Sierra Leone, W. Africa, 1100 ft„ 20, II. 1904, Major F. Smith, R. A. M. C." The allotype bears the label „C6te d'Afrique or. angl., Tiwi, Alluaud et Jeannel, Nov. 1911." There are also two other paratypes labeled „Sierra Leone, Njali, X, 26, E. Hargreaves." One in British Musenm and one in the Kansas University Collection. Holotype in the British Museum: allotype in the Paris Museum. Hydrometra Illingworthi* sp. n. (Plate IV). Size and Color. Length, 15 mm (male holotype); the general color light brown, darker on head between and in front of the eyes; the pronotum with a narrow, median longitudinal, frosted line bordered on each side by a dark band; a frosted stripe extending on the lateral margins of the body from near the anterior margin of the thorax to the posterior margin of the sixth abdominal segment, plainer on the abdomen than in H. Horuathi which shows only faint band connecting marked spots near anterior margins of the segments; abdominal tergites are dark brown polished except last abdominal which is dull; connexiva and ventral parts of body light brown, slightly frosted. Structural Characteristics. Head : Length, 135 units; the ratio of the anteocular part of the head to the postocular part is given in the formula AO : PO : : 87 :38; the dorsal interocular groove is short but nearly as long as the diameter of an eye; the ventral interocular groove is about like dorsal one but broader; the clypeus is truncate, about twice as broad as long; the rostrum surpasses the eyes by about one-third the postocular distance; the antennae are missing. Pronotum: Length, 80 units; the pits very indistinct, even the encircling row parallel to the anterior margin difficult to discern above.