TIPHIIDAE — KROMBEIN 



Hylomesa tricolor lieftincki, new subspecies 



Figure 4; Plate 1 (fig. 4) 



Females of this Javan race differ from those of typical tricolor in 

 having stronger clypeal teeth, in the stronger clypeal keel terminating 

 below in an inverted U-shaped carina, and in being comparatively 

 more strongly punctate or sculptured in certain features as detailed 

 in the description below. 



The male associated here with tricolor lieftincki females was also 

 taken on Java, though in a different locality. The sex association is 

 believed to be correct because the male also has a strongly developed 

 clypeal keel terminating below in an inverted U-shaped carina; in 

 this feature it differs from any other Hylomesa males known to me. 



Female. — Length 21.5, forewing 14 mm. Color as in typical tricolor 

 except blue reflections on abdomen evanescent. 



Head from above with length (apex of antennal insertions to occiput) 

 0.85 times the width across eyes; clypeal keel stronger than in typical 

 tricolor, terminating below in an inverted U-shaped carina, the arms 

 of which extend to the pair of strong median teeth on the apical 

 margin; punctation as in typical tricolor; ocellocular distance 2.64 

 times the postocellar distance and 0.52 times the ocelloccipital distance. 



Pronotal ridge somewhat stronger than in typical tricolor, and 

 punctures more crowded on anterior half of disk; punctures also 

 more crowded on posterior surface of propodeum. 



Ridge on first tergum stronger than in typical tricolor. 



Male. — Length 15, forewing 11 mm. Color as in female except 

 abdomen with strong blue reflections and forewing less strongly 

 infumated. 



Clypeal keel strong, terminating below in a high, inverted U-shaped 

 carina whose arms form a sharp tooth as viewed from side; distance 

 from apex of frontal platform to occiput 0.88 times the head width 

 across eyes; front with coarse, subcontiguous punctures, the median 

 furrow obsolete; ocellocular distance 2.63 times the postocellar dis- 

 tance and 0.70 times the ocelloccipital distance; occipital carina very 

 weak dorsally; median flagellar segments 1.25 times as long as wide. 



Pronotal disk with a strong ridge anteriorly, immediately behind 

 which on anterior third are several rows of punctures subcontiguous 

 in irregular transverse rows, elsewhere on disk the punctures very 

 sparse and small; scutum with coarse pits on most of disk, slightly 

 separated except posteriorly in middle, where they are contiguous; 

 scutellum with coarse, very crowded, larger pits; mesopleural disk 



