6 MISC. PUBLICATION 341, U. S. DEPT. OF AGRICULTURE 
Except for Vawpactus, which includes winged species, and possibly 
Pantoplanes and Symmathetes, which are unknown to the writer, the 
above groups are based on flightless type species and therefore can be 
provisionally listed as subgenera of Pantomorus. 
PANTOMORUS Schoenherr 
Pantomorus Schoenherr, Genera et Species Curculionidum, vy. 5, p. 942, 1839; 
Lacordaire, Genera des Coléoptéres, v. 6, p. 70, 1863; Gemminger and Harold 
Catalogus Coleopterorum, y. 8, p. 2203, 1871; Chevrolat, Bull. Soc. Ent. 
France, 1879: ecxxx; Sharp, Biologia Centrali-Americana, y. 4, pt. 3, pp. 
101, 152, 1889-1911 (1891) ; Perkins, Fauna Hawaiiensis, v. 2, pt. 3, p. 130, 
1900; Champion, Biologia Centrali-Americana, vy. 4, pt. 3, p. 333, 1889-1911 
(1911) ; Pierce, U. S. Natl. Mus. Proc. 45: 416, 1913; Blatchley and Leng, 
Rhynchophora of North Eastern America, p. 124, 1916; Leng, Catalogue of 
the Coleoptera of America North of Mexico, pp. 313, 314, 1920; Heller, An. 
Soe. Cient. Argentina 91: 19, 20, 1921; Bradley, Manual of the Genera of 
Beetles of America North of Mexico, pp. 273, 331, 1930; Winkler, Catalogue 
Coleopterorum Regionis Palaearcticae, pt. 12, column 1477, 1932; Dalla 
Torre, Emden, and Emden, Coleopterorum Catalogus, pt. 147, p. 25, 1936; 
Emden, Stettin, Ent. Ztg. 97: 85 and footnote, 1936. 
Length rarely less than 5 mm; vestiture usually abundant, squamiform, setae 
present or absent. Head broad; prementum’ not setose; mandibles scaly and 
setose ; apical margin of rostrum in side view deeply emarginate (fig. 2, Q, R); 
rostrum continuous or subcontinuous with front in profile, above with a median 
groove which extends on to head; nasal plate rather small, often poorly defined; 
serobe lateral, narrow, curved, directed toward lower part of eye or below eye; 
antennal socket subapical; scape rather slender, attaining or exceeding hind 
margin of eye, funicular segment 2 frequently longer than 1; eye lateral, 
rounded or elliptical, often prominent. Prothorax without ocular lobe or 
vibrissae, basal margin of pronotum subtruncate, broadly rounded, or bisinuate; 
scutellum obsolescent to rather large. Elytra usually with 10 rows of punc- 
tures (row 10 interrupted medially in Atrichonotus and in Aramigus section of 
Asynonychus), well impressed striae usually absent; humeri rounded, moder- 
ately prominent to obsolete; erect setae, when present, often longer on apical 
declivity ; no callus on apical declivity. Metepisternal suture usually distinct, 
at least in part; abdominal sternites 1 and 2 longer, each longer than 8 or 4. 
Fore coxae contiguous, closer to anterior than to posterior margin of prothorax, 
middle coxae narrowly separated; femora not toothed; at least fore tibia 
denticulate or spinose on lower edge, front and middle tibiae (in United States 
species) mucronate; tarsi dilated, claws free. Hind wings nonfunctional. 
Ental surface. of abdominal sternite 5 of female with an erect or suberect 
sclerotized protuberance on each side (fig. 3, G@). Male, where known, with 
internal sac extraordinarily large, extending far beyond base of median lobe 
and ending in a balloonlike enlargement (fig. 4, J). For other sex differences 
see subgenus Phacepholis. 
The combination of lateral eyes, nonsetose prementum, slender 
scape, denticulate or spinose lower edge of fore tibia, and absence of 
vibrissae and ocular lobes from the prothorax is sufficient to separate 
Pantomorus from any United States genus with which it otherwise 
might be confused. 
The lateral position of the eyes in Pantomorus and allied genera 
(Naupactini) is one of the important distinctions between this tribe 
and the Barynotini (£'picaerus, etc.), in which the eyes are in part 
dorsal. In general this distinction is true, but in some species of 
Pantomorus the eyes are not strictly lateral in that they are not 
separated above by the full basal width of the rostrum; however, 
5TING, PETER C. THE MOUTH PARTS OF THE COLEOPTEROUS GROUP RHYNCHOPHORA. 
Microentomology 1: 93—114, illus. 1936. Ting points out that the mouth part called 
mentum in curculionid literature is the fused mentum and submentum, and he uses the 
term “prementum” in referring to it. 
