ETHIOPIAN NASUTITERMITINAE in 



Eutermes {Trinervitermes) dispar form zuluensis Holmgren, 1913d : 340. Type locality : 



Republic of South Africa, Zululand, Mfolosi Drift, Mkosi. syn. n. 

 Eutermes {Trinervitermes) dispar form disparioides Holmgren, 1913 : 342. Type locality : 



Republic of South Africa, Zululand. Mhlazinga. 

 Trinervitermes zuluensis (Holmgren) Fuller, 1922 : 113 [including Trinervitermes dispar form 



disparioides Holmgren as a synonym . 

 Trinervitermes pretoriensis Fuller 1022 : 114. Type Locality : Republic of South Africa, 



Pretoria, syn. n. 

 Trinervitermes rapulum (Sjostedt) Sjostedt, 1926 : 348. 



Additions to the previous descriptions (Sands, 19.57) "'' both imago and soldier castes are 

 necessary. 



Imago. Head capsule, central part of irons and vertex yellow-brown to dark chestnut brow n, 

 vertex often with median pale patch, pale yellow to yellow brown ; postclypeus, Labium, 

 antennae, and area surrounding eye, ocellus and antenna! socket paler, pale yellow to yellow- 

 brown. Pronotum yellow to yellow-brown, other thoracic sclerites and legs yellow. Abdominal 

 tergites yellow to brown, often darker round stigmata, sternites pale yellow to yellow, sometimes 

 brown round stigmata. Wings translucent pale brown, subcosta and radius sector, outlined 

 brown at base ; membrane behind radius sector with orange streak ; rest of venation outlined 

 brown. 



Posterior margin oi head capsule behind eyes much less than semi-circular, slightly sinuate 

 immediately behind eyes ; fontanelle rather small, shape varies in J from U- to near Y-shaped, 

 $ from Y-shaped to triangular with concave anterior margin, Lateral arms short, not dilated 

 terminally ; frons usually with two small diverging depressions in front of fontanelle ; eyes 

 prominent in proportion to own diameter but not large relative to head width, W/E index 

 3-0-3-5 ; ocelli separated from eyes by one-fifth t<i more than half own least diameter ; post- 

 clypeus width 1-9-2-2 times length ; molar plate of right mandible with 7 8 ridges : antennae, 

 70% of specimens with 15 segments, 30% with 16. 



Pale coloured " scent " gland on anterior margin of . tilth abdominal sternite small, 056- 

 o-yimm. wide, 015 o-2omm. long ; cerci of f as long as or longer than basal width, slightly 

 mamilliform. 



Pilosity of vertex of uneven length, not forming a " pelt " or " mat ". 



Measurements (38 specimens from 1 1 localities) in millimetres 



Range Mean 



Head width across eyes 1-45-1*3 . . 164 



Greatest diameter of eye 0-47-0-58 . . 0-52 



Ocellus . . . 0-15-0-23 x 0-20-0-30 . . ok; x o 24 



Ocellus to eye . . o-oj-o-io . . 0-06 



Width of pronotum . 1-25-1-70 . . 1-49 



Length of pronotum . 0-78-105 . . 0-93 



Length of hind tibia . 1 -Si -2-20 . . 202 



Length of fore wing . 14-30 2210 . . 17-31 



Soldiers. Major soldier : head capsule yellow to ferruginous orange, nose ferruginous to 

 pitch black with red tip, antennae pale yellow to orange-yellow. Pronotum, meso- and meta- 

 nota yellow to yellow-brown, legs pale yellow to yellow. Abdominal tergites yellow to brown, 

 sternites pale yellow. 



Head capsule in plan view slightly " shouldered " behind antennae, rounded posteriorly, nose 

 cylindrical to weakly conical. In profile distinctly concave, with lowest point above or slightly 

 in front of antennal socket, rising in a weak curve or nearly straight line to highest point near 

 back of head, before downward curve to occiput ; nose shorter than rest of head, measuring 

 from hind margin of antennal socket, angle of nose cone 0-14 degrees. 



Head setae consist of four at nose tip with a few smaller setae behind them, and occasionally 

 scattered sparse minute setae on vertex. Middle abdominal tergites with scattered small setae, 



