Synonyms and other taxonomic changes
Formerly placed in genus Gryllotalpa.
Neocurtilla hexadactyla (Perty 1832)
--Two-clawed Mole Crickets, e.g. S. borellii
), Gryllotalpa (European Mole Cricket, local). Scapteriscus has two large claws on fore-tarsi, while Neocurtilla has four, with two more on the rest of the leg, giving six:
key. Also note brown pronotum of Neocurtilla
seems to (usually?) show a dark gray pronotum with four light spots. Neocurtilla
has short wings, Scapteriscus
longer, covering much of abdomen. Prothorax of Neocurtilla
forms short hood over head:
Prothorax of Scapteriscus forms a more smooth transition to head.
Call of Neocurtilla is a slow chirp, 2-3 per second (at 77 °F). Scapteriscus has a trilled call.
Eastern Canada south through eastern and central United States, south to South America.
Usually wet, sandy or muddy soil near streams, ponds. Also agricultural fields.
Typically mid-summer to fall (July-November) in much of range. March-November (North Carolina). June-October (Michigan).
Herbivore. Nymphs feed on plant roots.
Two year life cycle in most of range, e.g., Carolinas and farther north. (In central Florida, overwinter as adults, have one-year life cycle.) Males call from burrows. Females lay eggs in chamber at the end of her burrow--guards nymphs through the second or third instars. Comes to lights.
Two-clawed Mole Crickets, Scapteriscus
Prairie Mole Cricket, Gryllotalpa major
Capinera, pp. 212-213, plate 47 (1)
Arnett,p. 168, fig. 11.28 (2)
Swan and papp, p. 78, fig. 41 (3)
Helfer, p. 323, fig. 515 (4)
Cranshaw, pp. 512-513 (8)