BOCAK, REVISION OF DIATRICHALUS FROM NEW GUINEA das) 
pearance. D. bipunctatus from which it differs not only in the coloration but also in 
the more slender phallus. 
Description: d. Body medium sized, very slightly widened posteriorly, dark 
brown to black, only humeral third and transverse band before elytral apex light 
ochre yellow. Head small, with smaller, but prominent eyes, interocular distance 
1.71 times longer than maximum eye diameter, surface of cranium shining with quite 
dense short, light brownish pubescence. Maxillary palpi robust, apical segment with 
two tubercles only. Pronotum transverse, 1.50 times wider that long at midline, flat, 
lateral margins only slightly elevated, posterior angles acute, with short lateral pro- 
jections (Fig. 4). Elytra with apparently shortened third primary costa, secondary 
costae very weak, weaker than transverse ones, sometimes missing or inconspicuous, 
elytral cells quadrate in average. Male genitalia as in fig. 29. 2: unknown. 
Measurements: Length of body 8.95 mm, width at humeri 2.06 mm, length of 
pronotum 1.08 mm, width of pronotum 1.60mm. d: interocular distance 0.66 mm, 
maximum diameter of eyes 0.39 mm. 
Distribution: New Guinea; known only from the type locality. 
3.10. Diatrichalus fenestratus sp.n. (Figs 10, 55) 
Type material: Holotype 4, Irian Jaya: Jayawijaya, between Theila and Lake Habbema, 
2800-2950 m, 22. X. 1993, leg. A. RrepEL (SMNS). 
Name derivation: D. fenestratus is named according to the prevalent rectangular shape 
of elytral cells. 
Differential diagnosis: D. fenestratus is resembles D. aeneus by the body 
shape but it is mat dark brown, without any metallic shine and has mostly quadrate 
elytral cells. 
Description: d. Body medium sized, slender, dark brown to black, without 
metallic shine. Head small, antennal tubercles flat, eyes hemispherically prominent, 
interocular distance 1.27 times longer than the maximum eye diameter. Antennae 
serrate, apparently compressed, segment three nearly parallel-sided, following seg- 
ments gradually more acutely serrate (Fig. 55). Pronotum small, widest at base, flat, 
considerably narrowed anteriorly, 1.5 times wider than long at midline. Elytra flat, 
slightly widened posteriorly, primary costa 1 shorter than one tenth of elytral length, 
primary costa 3 considerably shortened, reaching three quarters of elytral length, 
secondary costae irregular, often interrupted and missing in some parts of elytral in- 
tervals, transverse costae irregular, elytral cells variable in shape, mostly quadrate. 
Male genitalia with tubular base and ventral process (Fig. 10). 2: unknown. 
Measurements: Length of body 9.0mm, width at humeri 1.64 mm, length of 
pronotum 0,85 mm, width of pronotum 1.27 mm. d: interocular distance 0.52 mm, 
maximum diameter of eyes 0.41 mm. 
Distribution: New Guinea, known only from the type locality. 
3.11. Diatrichalus habbema sp. n. (Figs 9, 49) 
Type material: Holotype d, Irian Jaya: Jayawijaya, Pass Lake Habbema/Wamena Val- 
ley, 19.-20. X. 1993, leg. A. RrepEL, 3450m (SMNS). — Paratype: d, same locality data 
(SMNS). 
Name derivation: Named according to the type locality. 
