GALERUCINE BEETLES — BLAKE 237 



Remarks: The male is an immature specimen with shriveled abdo- 

 men which I did not try to dissect. Although both specimens lack 

 the pronotal vittae characteristic of T. nymphaea (Jacoby), the 

 specimens in other ways resemble that species so much that I believe 

 they are but a color race of it. 



Trichobrotica rhabdota, new species 



Figure 8 



About 3 mm. in length, oblong oval, shining, nearly impunctate, 

 the middle tibiae of the male excised near the apex, elytra with a few 

 erectish hairs, pale yellow, each elytron with a wide brownish vitta 

 extending from over the humerus to cover half of elytra at base and 

 widening towards apex, margin pale. 



Head with the interocular space approximately half width of head, 

 occiput rounded, polished, impunctate, frontal tubercles well marked, 

 a narrow carina down front, entirely pale yellow. Antennae yellowish 

 brown, long, slender, the four terminal joints missing. Prothorax 

 only a little wider than long with nearly straight sides, a depression 

 in basal half, shining, pale yellow. Scutellum pale. Elytra shining, 

 nearl}'^ impunctate, pale yellow with a wide brown vitta on each 

 elytron, leaving the margin and a wide sutural pale vitta. Body 

 beneath entirely pale, the legs entirely pale, middle tibiae of the male 

 with a small notch, front tibiae and first tarsal joint a little stouter. 

 Length 3 mm.; width 1% mm. 



Type, male, MCZ 30675, from Aracataca, Magdalena Province, 

 Colombia, collected by P. J. Darlington, Jr. 



Remarks: This is close to the Panama subspecies, T. nymphaea 

 flavicollis, but the legs are entirely pale and the dark elytral vitta 

 not so wide. The aedeagus of this species also differs from that of 

 typical nymphaea in not being rounded but pointed at the tip. 



Trichobrotica egensis, new species 

 Figure 5 



About 3.5 mm. in length, elongate oblong oval, shining, the elytra 

 finely punctate, the prothorax with a transverse depression, pale 

 j^ellow brown, a piceous vitta on both sides of pronotum and a wide 

 piceous elytral vitta on each elytron joined at the apex. 



Head with the interocular space approximately half width of head, 

 a well-rounded occiput, frontal tubercles distinct, a narrow carina 

 down front, entirely pale yellow brown. Antennae pale at base, 

 third and fourth antennal joints about equal, the rest missing. Pro- 

 thorax somewhat wider than long with nearly straight sides, a wide 

 transverse sulcus and on either side a wide piceous vitta. Scutellum 

 pale. Elytra shining, finely punctate, pale yellow with a broad 



