BOCAK, REVISION OF DIATRICHALUS FROM NEW GUINEA / 
3. Species list 
3.1. Diatrichalus aeneus sp.n. (Figs 3, 39, 48) 
Type material: Holotype d, New Guinea NE, Mt. Kaindi, 2400 m, 27. I. 1963, light trap, 
leg. J. SEDLACEK (BPBM).— Paratypes: 2, New Guinea: NE: Mt. Kaindi, 2350 m, 15. VI. 1971, 
2, 30. VII. 1971; — 2, Mt. Missim, 2400 m, 21. IV. 1968, leg. J. & M. SEDLACER; - d, S. 
Garaina, 2000-2800 m, leg. J. SEpLAcEK; — 6, 30km S of Garaina, 2000 m, 9. I. 1968, leg. J. & 
M. SEDLACEK; — 6, Wau, Edie Ck, 2050-2300 m, leg. J. & M. Sepiacek, 18. VIII. 1965, d, I. 
1970; — 3, N slope Mt. Strong, 2600-2800 m, 8.-10. I. 1968, leg. J. & M. SEDLACER; — 6, Bull- 
dog Ra, 14km S Edie Ck, 2400 m, 4.-10. VII. 1966, leg. O. R. Witkes; - d, W. Highlands, Yai- 
bos, 2150-2200 m, 10. VI. 1963, leg. J. SEDLACER; — d, Tomba, slopes of Mt. Hagen, 2450 m, 
23. V. 1963, leg. J. SEDLACEK; —2 2 2, SE Mt. Giluwe, N side, Malgi, 2500 m, 25.-30. V. 1961, 
3, 6. VI. 1963 (BPBM, LMBC). 
Name derivation: The species is named according to the metallic shine of its elytra. 
Differential diagnosis: It differs from D. metallicus by more slender elytra 
(compare figs 2 and 3), the shape of aedeagus (Fig. 39) and by the metallic colour. 
The similar D. fenestratus has mat brown to black elytra and quadrate elytral cells. 
Description: Body moderately big, slender, dark brown to black, elytra with 
bronze shine. Head small, with big eyes and prominent antennal tubercles, including 
eyes considerably wider than the frontal part of pronotum, apical maxillary segment 
broad, antennae slender, serrate (Fig. 48). Interocular distance 1.10-1.25 times 
longer than maximum eye diameter. Pronotum small, shining, covered with dence 
short pubescence, widest at base, 1.67 times wider than long at midline, tooth on 
each margin inconspicuous. Elytra slightly dilated posteriorly to parallel-sided 
(Fig. 3). Primary costae very robust, costa 2 and 4 reaching apex, costa 1 very short, 
costa 3 slightly shortened. Secondary costae weak. Male genitalia short, quite robust 
(Fig. 39). 
Measurements: Length of body 7.6-10.6 mm, width at humeri 1.75-2.40 mm, 
length of pronotum 0.92 mm, width of pronotum 1.54mm. ¢: interocular distance 
0.58mm, maximum diameter of eyes 0.51 mm. 
Distribution: New Guinea, the locality data show the mountainous distribu- 
tion of this species. 
3.2. Diatrichalus bipunctatus sp. n. (Fig. 27) 
Type material: Holotype 4, Irian Jaya: Prov. Jayawijaya, Wamena, Pronggoli, 17.-19. 
IX. 1991, 2000-2400 m, leg. A. Rırper (SMNS). 
Name derivation: D. bipunctatus is named according to two rounded yellowish white 
patches on dark elytra. 
Differential diagnosis: It differs from other species of the genus in the 
unique elytra colour pattern. D. aeneus, similar in body shape, differs in coloration 
and in the shape of the male genitalia. 
Description: d. Body medium sized, slender, slightly widened posteriorly, 
dark brown to black, on every elytron a yellowish white rounded patch. Head small, 
with quite small but hemispherically prominent eyes. Interocular distance 1.59 times 
longer than maximum eye diameter. Antennal tubercles apparent, followed by trans- 
verse depression, apical maxillary palpi segment broad, without apparent tubercles, 
antennae acutely serrate, longer than two thirds of elytral length. Pronotum small, 
widest at base, pronotum 1.62 wider than long at midline, posterior angles acutely 
