THE SOLDIERLESS TERMITES OF AFRICA 91 



The four series of this species known from the depths of the Congo rain forest 

 appear all to have been found in the nests of other genera at the base of forest trees. 



Astalotermes quietus (Silvestri) comb. n. 

 (Text-figs 165-169, 176, 177 & 196-201; PI. 1, fig. 8) 



Anoplolermes quietus Silvestri, 1914 : 61. LECTOTYPE $, Ghana: Aburi. (Silvestri Coll., 

 Istituto di Entomologia Agraria, Naples), here designated [examined]. 



Imago. Head capsule dark sepia-brown, very dark above ocelli; fontanelle variable, from 

 broad oval near circular, to elongate oval, from distinctly smaller than ocelli to equal in size, 

 slightly raised, flat or slightly depressed, and from yellow-white, conspicuous, to sepia-brown, 

 scarcely paler than head ; commonest form oval, smaller than ocelli, slightly depressed, paler 

 than head; medial spot circular to elongate oval, vestigial to slightly smaller than fontanelle, 

 flat or slightly raised, coloured as head; postclypeus brown to dark sepia-brown, labrum pale 

 brown; antennae brown. Pronotum sepia-brown, meso- and metanota brown, usually with 

 transverse dark sutures; femora brown, tibiae yellow-brown, tarsi yellow. Abdominal tergites 

 and dorsal stigmata sepia-brown, sternites brown, yellow in middle, ventral stigmata brown; 

 cerci yellow-white to pale brown. 



Posterior margin of head capsule undulating, rarely approaching evenly rounded; ocelli 

 medium-sized, distance from compound eyes varies from one-quarter, to slightly less than 

 own least diameter; postclypeus very weakly to moderately inflated, Pcl/\V, 018-0-27, Pc1/Ra. 

 2-06-3-48, posterior margin evenly rounded in most, sometimes bowed, median suture commonly 

 weak or absent, especially in less inflated forms. Apical teeth of mandibles short, La/Li. 

 0-42-0-55, Ra/Ri, 0-55-0-74; subsidiary marginal tooth of left mandible just clear of molar 

 prominence in surface view, complex ratio, La/Li. L m ; first marginal tooth of right mandible 

 slightly behind line of apical to second marginal, its anterior margin distinctly shorter than 

 that of second. Pilosity of head capsule brown, short setae an even pelt with longer scattered 

 emergent setae. Meso- and metanota less narrow, somewhat wider at constriction, M/\Y, 

 0-26-0-34. Fore tibia with third apical spur shorter but distinct. 

 Measurements (34 specimens from 23 localities) in millimetres. 



Range Mean ± S.D. 



Head width across eyes (VV) 0-82-1-06 0917 ± 0061 



Ocellus (O w x Oi) . . 0-06-0-10 x 008-014 0079 ±_ 0008 x 0108 ±0013 



Ocellus to eye (O-E) . . 002-008 0047 ± 0-013 



Postclypeus length (Pel) . 0-16-0-28 0-221 i 0-027 



Antennal article III . . 002-005 °'°33 ± 0008 



Antennal article IV . . 0-03-0-06 0044 ± 0007 



Antennal article V . . 002-006 °°43 ± 0007 



Left mandible, apical to first 



marginal (La) . . oo6-oo<) 0-069 i 0-008 



Left mandible, first to third 



marginal (Li) . . 013-0-17 °'!47 ±o-on 



Left mandible, third mar- 

 ginal to molar (L ra ) . 0-06-0-08 0067 i 0006 

 Right mandible, apical to 



first marginal (Ra) • • 006-009 0073 ± 0-008 



Right mandible, first to 



second marginal (Ri) . 0-10-0-13 0-115 ± 0-008 



Right mandible, second mar- 

 ginal to molar (R m ) • 0-06-0-08 0-067 ± 0-008 

 Mesonotum width (M) . 0-21-0-34 0-269 ± 0-031 

 Metanotum width (N) . 0-23-0-34 0-275 ± 0-029 



