184 



MORPHOLOGY AND TAXONOMY OF ADULT MALES 



(244) [i. Midcranial ridge well developed and cruciform ; dorsal arm short, joining the lateral 

 and the ventral arms at the apex of the head. Postoccipital ridge laterally bending posteriorly 

 and giving off short, heavily sclerotized extensions anteriorly. Pre- and postocular ridges well 

 separated ; preoral ridge slender. Eyes : Dorsal simple eyes slightly projecting beyond the 

 outer margins of the head in dorsal view ; their corneae 24-27 (26) \l in diameter and separated 

 by 128-137 (134) (x, i.e. 5-0-5-6 (5-3) times their diameter apart. Ventral simple eyes equal to 

 the dorsal in diameter and 37-40 (39) u. apart. Lateral ocelli large, closely attached to post- 

 ocular ridge. Cranial apophysis apically bifurcate. Anterior tentorial arms join the cranial 

 apophysis separately ; tentorial bridge stout. Dorsal head setae 10-14 (11 -8) on each side ; 

 each gena with 4-6 (5-0) genal setae. Ventral head setae : Setae between the ventral eyes 

 absent ; 3-5 (4-1) just anterior to the preocular ridges, forming on both sides a transverse 

 irregular row ; 2-3 (2-5) on each side of the ventral arm of the midcranial ridge. 



One and sometimes two (av. 1-2) small bodies of unknown homology (X) occur dorsally on 

 each side of the dorsal arm of the midcranial ridge, near the apex of the head. 



Antennae : Rather moniliform ; 10-segmented ; 625-677 (653)^ long, i.e. somewhat 

 shorter than half the length of the body, the ratio being 1 : 2-2-2-4 ( 2- 3). ar *d equal or slightly 

 shorter than the hind legs, the ratio 1 : 1-0-1-2 (it). Scape 52-55 (54)^ long and 55-58 (57)[i 

 wide at base ; with 4-5 (4-5) h.s. Pedicel 67-70 (69) (j. long and 49^ wide ; with 3-5 (4-0) f.s., 

 2— 4 (3-0) h.s. and a sensillum placodenm. Flagellum : Flagellar segments IV to VII 31-37 (34) \x 

 wide ; segments III and X slightly narrower and segments VIII and IX slightly wider. Segment 

 III club-shaped and longest of all, the ratio its length to the length of segment X being 1-7- 

 1-9 (i-8) : 1, and its width to its length 1 : 3-1-3-6 (3-4). Segments IV to IX barrel-shaped, 

 the ratio width to length of segment IX 1 : 1-2-1-5 (1-4). Terminal segment pear-shaped. 

 Segments V to X and sometimes IV also, with a few apically knobbed, capitate sensory setae. 

 The following table shows the lengths of the flagellar segments and the number of setae on each : 



III 



IV 



V 



VI 



VII 



VIII 



IX 



X 



length in y. 



95-98 



82-85 



61-67 



61-70 



58-64 



49-55 



49-55 



52-58 



(av.) 



(97) 



(84) 



(64) 



(66) 



(61) 



(52) 



(52) 



(55) 



f.s. 



4 -8 



I5-J9 



7-10 



8-12 



10-13 



10-14 



9-12 



8-1 1 



(av.) 



(6-o) 



(17-0) 



(8-5) 



(io-o) 



("•5) 



(12-0) 



(io-5) 



(9-5) 



h.s. 



3-4 



3-5 



2-3 



i-3 



1-2 



1-2 



1-2 



1-2 



(av.) 



(3-5) 



(4-o) 



(2-5) 



(2-0) 



(i-5) 



(i"5) 



(i-5) 



(i-5) 



Set. ca. 







O-I 



3-4 



2-4 



3-4 



2-4 



3-4 



3-4 



(av.) 







(o-5) 



(3-5) 



(3-o) 



(3-5) 



(3-o) 



(3-5) 



(3-5) 



200-^ 



Fig. 48. Gossyparia spuria (Mod.), macropterous form, lateral view. 



