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)

A b d o m e n : The posterior half of the sixth abdominal segment is swollen; on the ventral side of the sixth segment, about midway between the median longitudinal line and the lateral margin, is a small brush of stiff hairs close to the posterior margin; the seventh segment is provided with a hairy, broad, ventral keel extending the length of the segment; a large depression on each side of the keel; a heavy ledge above each depression with a tuft of long spinelike hairs near the anterior margin and a similar tuft of much longer hairs near the posterior margin; on the dorsal posterior margin of the sixth segment there is a fringe of short stiff hairs; the ierminal dorsal process is stout and sharp, about one-third the length of the segment. Tn the female the dorsal process is one-third the length of the segment. Described from two males bearing the following label: „Transvaal. Makapan, E. Simon, Coll. Noualhier, 1898", (One of these is the holotype in the Paris Museum), and specimens from Cape Province, Transvaal, N. Rhodesia, and S. Rhodesia collected by G. E. HUTCHINSON. These belong to the British Museum. An allotype is chosen from the paratypes of this series. N o t e s : This species is related to H. ambulator STAL and II. albolineolata REUTER from which it may be distinguished as indicated in the key. Hydrometra africana* sp. n. (Plate 11). Size and Color. Length, 11.4 mm (male holotype) 12.3 mm (allotype); the general color of the body is a dark brown; indeed the color and pattern essentially as in H. transvaalensis except that the white line on the hemelytra is broader and broken into four disconnected segments. in which regard it resembles H. albolineolata REUTER. Structural Characteristics. H e a d : Length, 90 units (holotype); the ratio of the anteocular part of the head to the postocular part is given by the formula AO:PO: :53:27; dorsal interocular groove shallow; the ventral interocular groove marked and longer than the diameter of an eye; the clypeus is truncate. The rostrum surpasses the middle of the postocular distance; beginning with the basal one the ratio of the lengths of the antennal segments is expressed by the formula: 17:33: :83:48. Pronotum: Length, 52 units; the usual encircling row of pits parallel to the anterior margin; the median groove pitted on the posterior lobe; the posterior lobe with scattered pits.