BOCAK, REVISION OF DIATRICHALUS FROM NEW GUINEA 3 
Waterhouse, 1879 and Prometaneus Kleine, 1925 than to the remaining genera with 
shortened first primary elytral costa (BocAK, 1998). In the same paper the concept 
of this genus was widened and now both taxa with fully developed and missing sec- 
ondary costae are classified in Diatrichalus. There are many transitional states be- 
tween these two extremes of elytral structure and any trial to divide this very spe- 
ciose group on the basis of the absence of primary elytral costae would be purely ar- 
bitrate. Most species of Diatrichalus until now were classified as Trichalus due to the 
external similarity with the latter. Although there are some minute differences in the 
shape of the pronotum, the robustness of the body, shape of palpi and general colour 
patterns between both genera, it is advisable to dissect either male or female genitalia 
for certain generic classification. 
The aim of this paper is to revise all available Diatrichalus until now classified as 
Trichalus and related genera and to bring descriptions of new species collected re- 
cently in New Guinea and deposited in the State Museum of Natural History in 
Stuttgart and in the State Museum of Natural and Cultural Heritage in Honolulu. 
Acronyms 
The following acronyms indicate depositories for specimens used in this study: 
BMNH = Natural History Museum, London (Mrs. J. BEARD, Mr. M. KERLEy); 
BPBM State Museum of Natural and Cultural History, Honolulu, Hawaii (Dr. 
SAMUELSON); 
KMTC = collection of Mr. KıyosHı Marsupa, Takarazuka City; 
LMBC = author’s collection; 
MHNG = Muséum d’Histoire naturelle, Genéve (Dr. I. Lögr.); 
MSNG = Museo civico di Storia naturale, “Giacomo Doria” Genova (Dr. R. Poca); 
MHNB = Naturhistorisches Museum, Basel (Dr. M. BRANCUCCI); 
MHNP = Muséum National d’Histoire Naturelle, Paris (Dr. J. MENTER); 
MTMB = Magyar Termeszettudomanyi Muzeum, Budapest (Dr. O. MERKt); 
NHMB = Naturhistorisches Museum, Berlin (Dr. F. Heke, Dr. M. Unric); 
SMNS = Staatliches Museum für Naturkunde, Stuttgart (Dr. W. SCHAWALLER); 
ZMPA = Instytut Zoologii PAN, Warszawa (Mr. T. Hurveyjt, Dr. S. A. SLıpinskı). 
Acknowledgements 
The following entomologists are gratefully acknowledged for loans of material and their 
valuable assistance during my visits in their institutions: Mrs. J. BEARD and Mr. M. KErLEY 
(London), Dr. M. Brancuccı (Basel), Dr. B. BRUGGE (Amsterdam), Mr. O. JAGER (Dresden), 
Dr. J. KrIKKEN (Leiden), Dr. I. Lögr (Genéve), Mr. K. Matsupa (Takarazuka City), Dr. J. 
MENIER (Paris), Dr. O. MErkı (Budapest), Dr. G. A. SAMUELSON (Honolulu), Dr. W. 
SCHAWALLER (Stuttgart), Mr. T. HurLejJr and Dr. S. A. Stıpısskı (Warszawa), Dr. M. UHLIG 
and Dr. F. Hırke (Berlin). This study was also made possible through rich material collected 
by Mr. J. SEDLACEK and Mrs. M. SEDLACEK (Brookfield, Australia). lam very obliged to all of 
them. This study was partly supported by the grant 206/98/0539 of the Grant Agency of the 
Czech Republic, whose support is acknowledged. 
2. The genus Diatrichalus Kleine, 1926 
Diatrichalus Kleine, 1926. 
Type species: Diatrichalus xylobanoides Kleine, 1926 (KLEINE, 1926: 167) (by original de- 
signation). 
Mimotrichalus Pic, 1930 (Pic, 1930); BocAk (1998: 193). 
Type species: Mimotrichalus tenimberensis Pic, 1930 (Pic, 1930: 92). 
