Sigmomorpha pseudoregularis- Sigmomorphina alabamensis
- Sigmomorphina aliceae
- Sigmomorphina amygdaloides
- Sigmomorphina batesfordensis
- Sigmomorphina beaglensis
- Sigmomorphina bombasta
- Sigmomorphina brotzeni
- Sigmomorphina chileana
- Sigmomorphina cubensis
- Sigmomorphina gallowayi
- Sigmomorphina haeusleri
- Sigmomorphina hokkaidoensis
- Sigmomorphina konradensis
- Sigmomorphina kotoi
- Sigmomorphina kronenburgae
- Sigmomorphina lacrimosa
- Sigmomorphina lamarcki
- Sigmomorphina marylandica
- Sigmomorphina mindenensis
- Sigmomorphina nagaoi
- Sigmomorphina nevifera
- Sigmomorphina nuttalli
- Sigmomorphina pearceyi
- Sigmomorphina pernaeformis
- Sigmomorphina pseudoschencki
- Sigmomorphina pulchra
- Sigmomorphina reedi
- Sigmomorphina rhomboidalis
- Sigmomorphina schencki
- Sigmomorphina semitecta
- Sigmomorphina soldadoensis
- Sigmomorphina soluta
- Sigmomorphina sporadica
- Sigmomorphina subulata
- Sigmomorphina terquemiana
- Sigmomorphina translucida
- Sigmomorphina trilocularis
- Sigmomorphina trinatensis
- Sigmomorphina trinitatensis
- Sigmomorphina undulosa
- Sigmomorphina vaughani
- Sigmomorphina wilcoxensis
- Sigmomorphina wynyardensis
- Sigmomorphina yokoyamai