26 
General Catalogue of the Homoptera 
1859 Monopsis pallida Dohrn, Catalogus Hemipterorum 1859: 60 
[Listed] 1 
1859 L[adella\ pallida Stal, Berliner Ent. Zeit. 3: 319. Equals Monopsis 
pallida Walk. 
1914 Ladella pallida Melichar, Monographie der Tropiduchinen 1914: 
25. Equals Monopsis pallida Walk. 
1914 Monopsis pallida Melichar, Monographie der Tropiduchinen 
1914: 82, 142 [Listed] 1 
1915 Ladella pallida Melichar, Yerh. Naturf. Ver. Brunn 53: 106. 
Equals Monopsis pallida Walk. 
1915 Monopsis pallida Melichar, Yerh. Naturf. Ver. Brunn 53: 163, 
223 [Listed] 1 
1930 Ladella pallida Metcalf and Bruner, Psyche 37: 405, 406 [Com¬ 
parative notes] 
1935 Ladella pallida Osborn, Sci. Surv. Porto Rico and Virgin Islands. 
14: 203. Equals Monopsis pallida Walk. 
1949 Ladella pallida Fennah, Psyche 56: 56; PI. 4, Figs. 1-4 [Cata¬ 
logued, illustrated] Equals Monopsis pallida Walk. 
1950 Ladella pallida Wolcott, Jour. Agr. Univ. Puerto Rico 32: 133. 
Equals Monopsis [pallida Walk.] 
1951 [Ladella pallida] Caldwell and Martorell, Jour. Agr. Univ. 
Puerto Rico 34: 216; PI. 35 [Notes, illustrated] 1 Equals Monopsis 
pallida Walk. 
stali Fennah 
1859 L[adella] pallida [nec Walker] Stal, Berliner Ent. Puerto Rico 
Zeit. 3: 319 [Described] 1 2 St. Thomas 
1914 Ladella pallida [nec Walker] Melichar, Mono- 3 Virgin 
graphie der Tropiduchinen 1914: 25; Fig. 6 [De- Islands 
scribed, illustrated] 1 :140 [Listed] 1 
1915 Ladella pallida [nec Walker] Melichar, Yerh. Naturf. Yer. 
Brunn 53: 106; Fig. 6 [Described, illustrated] 1 :221 [Listed] 1 
1923 Ladella pallida [nec Walker] Wolcott, Jour. Dept. Agr. Porto 
Rico 7: 274 [Listed] 1 
1931 Ladella pallida [nec Walker] Dozier, American Mus. Nov. 510: 
14 [Listed] 1 
1935 Ladella pallida [nec Walker] Osborn, Sci. Surv. Porto Rico and 
Virgin Islands 14: 203 [Described] 1 
1936 Ladella pallida [nec Walker] Wolcott, Jour. Agr. Univ. Puerto 
Rico 20: 96 [Listed] 1 
1949 Ladella stali Fennah, Psyche 56: 57. nom. nov. for [Ladella 
pallida] Stal [1859a: 319] nec Monopsis pallida Walker [1851a: 
325] 
