The Termites of South Africa 97 



termite material was obtamed. The measurements for soldiers 

 and workers have been amplified from collections in other Natal 

 localities. 



Microtermes havilandi Holmgren (1913) s.str. 

 = Termes incertus Hag. Haviland (1898). 

 = Termes mcerf us Hag. Sjostedt (1900). - 

 =- Termes ir^certus Hag. Fuller (1915). 



Tmago. Mainly characterized by the erratic jointing of the 

 antennae, these organs being XVII, XVI, or XV according to the 

 final condition of the basal series of the flagellum. Brownish 

 insects, head insignificantly darker than pronotum with con- 

 trasting black eyes. Wings slightly opaque tinged with brown and 

 yellow ; C. and R. yellowish brown to wing tip ; without any 

 decided yellow streak between R. and M. 



Head above, warm brown, often paler in middle of vertex; 

 eyes black; frons pale yellow from side to side; clypeus yellow; 

 antenn£e pallid, very faintly fuliginous. Pronotum, anterior and 

 posterior region almost as dark as head with a pale indefinite 

 flare from side to side across the middle also with pale cross 

 and pale spots towards anterior lateral corners. Meso- and 

 metanotum pallid in anterior areas, posterior quarter of both 

 brownish. Tergites of abdomen concolorous with head and usually 

 almost as dark; sternites laterally brown each with a pallid 

 median area subtended by yellow, the sixth sternite of female 

 with a large median yellow area. Legs almost uniformly pale 

 yellow-brown, tibitp below darker and often with a dark spot 

 near femora. 



Vertex of head depressed a little, with an insignificant but 

 plainly raised and distinct fontanelle point. (In cleared prepar- 

 ations, with an oval yellow fontanelle area as in all other 

 Microtermes). Antennae usually XVI jointed with IV a little 

 smaller than III, or III may be decidedly longer and noticeably 

 compound when antenna is pseudo XVII jointed ; or with XVII 

 segments when III is very small and half the length of IV; or 

 with XV segments when IV is always noticeably long and often 

 plainly compound. Ocelli roundly oval, short diameter to long 

 as 4 : 5, removed from eyes by half of short diameter. Clypeus 

 almost twice as wide as long. Pronotum with short anterior lobe 

 slightly elevated in the middle and there distinctly emarginate. 

 notch incurvate ; corners well rounded, sides tapering in a 

 somewhat flat curve into rather wide hind margin which is 

 plainly bilobed ; almost or quite as wide as head across eyes ; 

 length to width (about) as 5:7. Meso- and metanotum both 

 somewhat equally shallowly and angularly emarginate; processes 

 broadly triangular, apices rounded. 



Body with head fully extended 8 to 10, body with wings 17 to 

 19; forewing with stump 15 to 16, span 30 to 33; headwidth 

 across eyes 1*31 to 1*37 (usually 1-37) diameter of eye from 

 above • 30 to • 33, 



