Ammopelmatus nigrocapitatus

(Tinkham & Rentz, 1969)

Black-headed Jerusalem Cricket

Ammopelmatus nigrocapitatus is a of in the Stenopelmatidae, originally described by Tinkham & Rentz in 1969. It is one of 12 previously named recognized as valid in a comprehensive 2025 revision of the . The species is to parts of Southern California and is characterized by its distinctive black . Like other Ammopelmatus species, it is a large, flightless orthopteran adapted to arid and semi-arid environments.

Pronunciation

How to pronounce Ammopelmatus nigrocapitatus: //ˌæmoʊˈpɛlmətəs ˌnɪɡroʊˌkæpɪˈteɪtəs//

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

Distinguished from other Ammopelmatus by the black coloration of the . In the Southern California region where it occurs, it may overlap with other members of the Southern California species groups. Identification to species level requires examination of morphological characters and potentially calling drum patterns; genetic analysis confirms its placement as a distinct lineage within the .

Habitat

to Southern California. Specific preferences not documented, but related occupy arid and semi-arid environments including coastal scrub, chaparral, and desert margins. Likely associated with sandy or friable soils given the adaptations typical of the .

Distribution

to parts of Southern California, United States. Precise range boundaries not established in published literature.

Similar Taxa

Ammopelmatus mescaleroensisOccurs in sand dune in southeastern New Mexico and western Texas; distinguished by geographic separation and different habitat preferences.
Other Southern California Ammopelmatus speciesMultiple newly described in Southern California Groups #1-5 and the Monica Mts Group occur in the same region; distinguished by subtle morphological differences, genetic divergence, and potentially calling drum patterns.

More Details

Taxonomic History

Originally described as Stenopelmatus nigrocapitatus by Tinkham & Rentz in 1969, later transferred to Ammopelmatus. The was confirmed as valid in the 2025 comprehensive revision by Weissman, which described 105 new species in the and established a phylogenomic framework for the group.

Conservation Status

Not evaluated; limited distribution in Southern California suggests potential vulnerability to loss and urbanization, though specific threats not documented.