August, 1944 



Ross: Caddis Flies of Illinois 



169 



Fig. 590. — Eubasilissa pardalis, male geni- 

 talia. J, lateral aspect; B, ventral aspect; C, 

 dorsal aspect. (After Betten & Mosely.) 



there are several closely related species 

 which are larger and more strikingly col- 

 ored. 



Banksiola Martynov 



Banksiola Martynov (1924, p. 216). Geno- 

 type, by original designation: Neuronic con- 

 catenata Wall^er. 



This genus is distinguished by the sinuate 

 apex of R^ in both wings, the spiny tibiae, 

 the reticulate and spotted wings, and in par- 

 ticular the quadrate brown spots on the 

 otherwise clear hind wings. At the present 

 time five species are recognized in the Ne- 

 arctic region. One of these, canadensis, was 

 placed in OUgostomis by Milne (1934); it 

 seems better placed in Banksiola on the basis 

 of the venation and spiny legs. The geni- 

 talia, however, are extremely aberrent. Un- 

 questionably a review of the world fauna 



will necessitate changes in some of these 

 generic groupings. 



Only one species has been taken in Illinois. 



Banksiola selina Betten, new species 



Larva.— Fig. 562. Length 20 mm. Head, 

 pronotum and legs yellow; head with a 

 mesal and two lateral lines, the latter con- 

 verging toward the back of the head but 

 not actually meeting; pronotum with pos- 

 terior margin black, and with the disk hav- 

 ing a pair of black lines which usually touch 

 on the meson. Mesonotum and metanotum 

 entirely membranous, with irregular pur- 

 plish blotches. 



Adults. — Fig. 591. Length of male 12- 

 15 mm.; of female 16-20 mm. Head mostly 

 yellow; ocelli yellow, sometimes greenish 

 yellow, with their bases dark brown, the 

 area between lateral ocelli with some round, 

 dark brown spots each with a stout bristle; 

 posterior warts brown, covered with yel- 

 lowish bristles; in some specimens the brown 

 color of the head predominant; antennae 

 with alternate dark brown and yellowish 

 bands, the basal part of each segment dark; 

 palpi brownish yellow and covered with 

 darker bristles. Thorax various shades of 

 brown, the bristles yellowish. Legs brown- 

 ish yellow, the spurs brown, the spines 

 black. Forewings with pale, cream-colored 

 background, covered with a close reticula- 

 tion of dark brown; larger dark brown spots 

 at base and tip of subcosta, at tips of anals, 

 and often between anal veins; the dark spot 

 at tips of anals and one beyond on Cu^jj are 

 generally noticeable in the mid-dorsal line 

 when wings are roofed over abdomen. Hind 

 wings clear at base, a dark brown area on 

 the line of anastomosis and brown reticula- 

 tions from there out to the wing tip; M3 

 and M^ fused in the males, separate for 

 some distance in the females. Abdomen 

 yellowish brown, darker above; a transverse 

 sclerotized line on sternites 4—7 in the male, 

 3-6 in the female; a blunt sclerotized tooth 

 projects from meson on the sixth sternite 

 of the female, a smaller tooth appears on 

 the seventh and, rarely, one on the fifth; 

 these are usually absent on the male ab- 

 domen. 



Male Genitalia. — Fig. 592. Ninth seg- 

 ment sclerotized and ringlike, the anterior 

 margin curved and telescoped into the eighth 

 segment, the posterior margin nearly 

 straight and bearing dorsally many long 



