BOCAK, REVISION OF DIATRICHALUS FROM NEW GUINEA 19 
Redescription: d. Body medium sized to moderately large, slightly widened 
posteriorly, yellow, only antennae, palpi, tarsi, apical third of elytra and some parts 
of cranium brown. Head small, with rather small eyes, their interocular distance 1.71 
times longer than maximum diameter, antennal tubercles apparent, head surface 
shining, densely pubescent, maxillary palpi with short tubercles at outer margin of 
spical segment, antennae acutely serrate, pronotum considerably transverse, 1.92 
wider than long at midline, lateral tooth present, elytra with stout primary costae, 
costa 3 shortened, secondary costae as strong as transverse ones, transverse costae 
dense, reticulate cells transverse. Male genitalia as in fig. 18. 
Measurements: Length of body 11.1 mm, width at humeri 2.88 mm, length of 
pronotum 1.32 mm, width of pronotum 2.54mm. d: interocular distance 0.66 mm, 
maximum diameter of eyes 0.39 mm. 
Distribution: Southern New Guinea. 
3.14. Diatrichalus metallicus (Kleine, 1935), comb. n. (Figs 2, 22) 
Trichalus metallicus Kleine, 1935 (KLEINE, 1935a: 151) 
Type material: Holotype ?, “Edie Criek, Brit. N. Guinea, 7000 Fuss” (BMNH). 
Other material examined: New Guinea, NE: 2.0mm, Daulo Pass, 2400 m, Asaro- 
Chimbu div., 15. VII. 1955 J. L. Gressrrt, 7. VII. 1963 J. SEDLACER; — 6, Iongai, 10km E of 
Mt. Albert Edward, 1800-1850 m, 8.-10. XI. 1965; — 8,3 2 2, Purosa, 20-26 km SE Okapa, 
1800-2020 m, 28. VIII. 1964, J. & M. SEDLACER; — d, Kegsugl, nr. Mt. Wilhelm, 2500-2820 m, 
1. VII. 1963, J. SEDLACER, 6, Daulo Pass; — 2, Ialibu, Gressrrt-Maa;— d 2, Mt. Kaindi, 
2350 m, 7. V. 1968, J. L. Gressirt; — 2, Wau, 1750 m, 20. IX. 1965; — 2, Morobe distr., Lake 
Trist, 1600 m, 21.-22. XI. 1966; — 2, Wau, Big Wau Ck., 1200m, XII. 1965; — d, Wau, Mt. 
Kaindi, 7. X. 1992, A. RiEDEL; — 6, Mt. Giluwe, 2500 m, 6. VI. 1963, J. SEDLACEK; — d, Main 
Finisterre Range, near Freyberg Pass, 2550 m, 1.-21. X. 1958, W. W. BRANDT; — 2, Papua, S. 
Highlands, Dimifa, SE of Mt. Giluwe, 2200 m, 10. X. 1958, J. L. Gressrrt; — &, S. Highlands, 
N of Mendi, 1800 m, 8. X. 1958. J. L. Gressrrt; — 2, New Guinea, Telefomin, III. 1971; - 2, 
N. SE Guinea, 8km W Menai, 2150 m, 5.-12. XII. 1967, P. Corman; — 2 6d @ Irian Jaya, 
Prov. Jayawijaya, Bommela, 1. IX. 1992, 1750-2100 m, A. Rıeper (BPBM, SMNS, LMBC). 
Redescription: d. Body moderately large, apparently widened posteriorly, 
dark brown to black, with distinct blue or green metallic shine. Head small, eyes 
small, interocular distance 1.35 times longer than maximum eye diameter, antennal 
tubercles apparent, head surface mat, light pubescent, apical segments outer margin 
of maxillary palpi with several robust tubercles, antennae serrate. Pronotum trans- 
verse, 1.64 times wider than long at midline, with distinct tooth on each lateral mar- 
gin, surface shining, pubescent. Elytra broad, distinctly dilated to apical half (Fig. 2), 
costae 2 and 3 strong, costa 2 apparently weaker in apical fourth, reticulate cells 
mostly transverse, often irregular. Male genitalia with slender phallus (Fig. 22). 
Measurements: Length of body 7.2-9.5 mm, width at humeri 1.85-2.25 mm, 
length of pronotum 1.00 mm, width of pronotum 1.64mm. ¢: interocular distance 
0.58mm, maximum diameter of eyes 0.44 mm. 
Distribution: Widely distributed and quite common in high mountains of New 
Guinea. 
3.15. Diatrichalus pallidihumeralis sp. n. (Figs 32, 52) 
Type material: Holotype d, New Guinea: Papua, Brown Range, 20 km N Port Mores- 
by, 27. IV. 1960, leg. C. W. O'BRIEN (BPBM). 
