1967] 
MacLeod & Adams — Berothidae 
245 
of distal portion of CuP extending basad from cu-a crossvein. Single 
gradate series; 3-4 crossveins. No squamae on wings or body. 
Discussion. This genus is quite similar to Trichoberotha Hand- 
schin in the structure of the head capsule and prothorax, in the 
presence of recurrent humeral veins in both pairs of wings, in the 
general plan of venation, and in the small band-like shape of the eighth 
sternite of the female. Trichoberotha has larger mandibles, no trace 
of fusion of the bases of M and R in the forewing, and shows several 
important differences in the structure of the male and female genitalia. 
Naizema mendozina (Esben-Petersen), n. comb. 
Berotha mendozina Esben-Petersen, 1912, Entomol. Mitteilungen 1:271, fig. 
5 (male terminalia). Described from three cotypes now in the Uni- 
versitetets Zoologiske Museum, Copenhagen. We designate as lectotype 
a pinned male of this series bearing the following labels: “Mendoza 
1904-05 A.C.J.H.”; “Coll. Esben-Petersen”; “Type”; and “Berotha 
mendozina n. sp., Type!”. The cleared abdomen is in glycerine in a 
glass microvial on the pin with the specimen. 
Espetera mendozina Navas, 1929, Mem. Acad. Cienc. Zaragoza 2: 30-31, 
figs. 10 (male terminalia), 11 (photograph of wings). 
Distribution. Argentina: Mendoza-Santa Rosa, Potrerillos. 
Naizema patagonica Navas 
Naizema patagonica Navas, 1919, Rev. R. Acad. Cienc. Madrid 17: 299-300, 
fig. 5 (drawing of wing bases). Type, stated to be in Navas Coll., not 
examined. Navas, 1929, Mem. Acad. Cienc. Zaragoza 2: 20-22, fig. 7 
(drawing of wing bases), fig. 8 (drawing of forewing). 
Distribution. Argentina: Patagonia. 
Notes on the morphology of the 
TERMINAL ABDOMINAL SEGMENTS OF BEROTHIDAE 
Several inconsistencies and errors have entered the literature on 
berothid genital morphology since most previous studies have dealt 
with rather specialized forms. In the male, Carpenter (1940) inter- 
preted the reduced sclerite of the fused gonarcus and gonocoxites of 
Lomamyia as representing the apparently missing “10th tergites” 
(ectoprocts) , while Tjeder (1959) did not realize that both gonarcus 
and gonocoxites (parameres in his terminology) are represented in 
the seemingly single sclerite of Acroberotha xiphophora Tjeder. The 
generalized arrangement of these sclerites shown by Cyrenoberotha 
(as well as by Nosy bus and Naizema ) indicates that in the specialized, 
higher berothids the gonocoxites have become much reduced with 
the weakly sclerotized space between them and the gonarcus becom- 
