igo MORPHOLOGY AND TAXONOMY OF ADULT MALES 



Gossyparia salicicola Borchsenius 

 (Text-figs. 50, 51) 



Brachypterous form only known. The males rather robust, with the abdomen slightly 

 broader than the thorax ; comparatively large, with short antennae and short legs. When 

 mounted 1302-1442 (1373) [x long, 322-350 (336) y. wide at mesothorax and 532-980 (644) [z wing 

 expanse. 



Body setae : Antennae with numerous fleshy and a few hair-like setae, about 28 jx long. 

 Body and legs with much shorter hair-like setae only. 



Head : Subtetrahedron ; subtriangular in dorsal view and rather rounded in front view ; 

 ventral preocular depression absent in lateral view. Length from apex to postoccipital ridge 

 131-143 (137) (^ ; from apex to neck 189-204 (195) jx ; width across the genae 223-244 (229)^1. 

 Midcranial ridge cruciform. Postoccipital ridge laterally forked. Preocular 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 18-21 (20) y. in diameter 

 and separated by 134-165 (146) |x, i.e. 6-3-8-5 (7-0) times their corneae apart. Ventral simple 

 eyes 18-21 (19) [x in diameter and 73-95 (82) [x apart. Ocellus vestigial and merely represented 

 by a sclerotized spot, attached to the postocular ridge by means of a slender sclerotization. 

 Cranial apophysis apically bifurcate. Tentorial bridge stout. Mouth tubercle large. Dorsal 

 head setae 10-15 ( I2 '5) on each side ; each gena usually with 3-6 and occasionally 8 (av.) 4-7) 

 genal setae. Ventral head setae : Setae between the ventral eyes absent ; 2-4 (2-8) just 

 anterior to the preocular ridges, forming on both sides a transverse irregular row ; 1-2 (1-5) 

 on each side of the ventral arm of the midcranial ridge. The mouth tubercle with 1-2 (i-6) 

 minute setae. 



A small body of unknown homology (X) occurs dorsally on each side near the apex of the 

 head. 



Antennae : Rather moniliform ; 10-segmented ; 522-583 (549)^1 long, i.e. shorter than half 

 the body length, the ratio being 1 : 2-3-2-6 '2-5), and slightly shorter than the hind legs, the 

 ratio 1 : 1-1-1-2 (1-13). Scape 46-52 (49)(x long and 55-61 (58)jx wide at base ; always with 

 4 h.s. Pedicel 61-67 (64) (x long and 43-46 (45) (x wide ; with 1-2 (i-i) f.s., 2-3 (2-4) h.s. and a 

 sensillum placodeum. Flagellum : Segment III-IX 34-40^ wide and segment X 27-31 (29) jx 

 wide. Segment III club-shaped and longest of all, the ratio its length to the length of segment 

 X 1-7-2-1 (1-9) : 1, and its width to its length 1 : 2-2-2-5 ( 2 '3)- Segments IV to IX barrel- 

 shaped, the ratio width to length of segment IX being 1 : 1-0-1-4 ( I-2 )- Terminal segment 

 pear-shaped. Apically knobbed sensory setae entirely absent on the antennae. 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 (x 



76-92 



46-61 



52-67 



49-64 



49-61 



40-49 



37-46 



43-4< 



(av.) 



(85) 



(50) 



(61) 



(58) 



(52) 



(46) 



(43) 



(45) 



f.s. 



3-8 



3-9 



5-9 



7-12 



8-15 



5-8 



4-8 



2-4 



(av.) 



(5-i) 



(6-2) 



(7"4) 



(9-5) 



(io-8) 



(7-i) 



(6-2) 



(2-8) 



h.s. 



2-6 



2-4 



1-2 



1-2 



i-3 



O-I 



1-2 



O-I 



(av.) 



(3-3) 



(2-9) 



(i-5) 



(i-3) 



(i-8) 



(07) 



(1-2) 



(o-6) 



A ntennal bristles well-defined ; segments VIII and IX each with one ventral bristle. Terminal 

 segment with one dorsal preapical bristle, two lateral ones at a greater distance from the apex 

 and one or two apical small hair-like setae. 



Thorax : 403-464 (433) (x long. The thoracic structures, ridges and plates similar to G. 

 spuria. Prosternum and prosternal ridge 21-27 (24) and 82-95 (89) y- long respectively. 

 Prothoracic setae on each side : Medial pronotal setae 0-3 and occasionally 5 (av. 1 -4) ; lateral 



