Luridiblatta
Fernandes, 1965
Species Guides
1- Luridiblatta trivittata(Three-lined Cockroach)
Luridiblatta is a of in the Ectobiidae, established by Fernandes in 1965. The genus contains 10 recognized , including L. trivittata which has been introduced to California and is known there as the "tiny cockroach." Most species exhibit an almost circum-Mediterranean distribution. A 2022 taxonomic revision described 7 new species and organized them into three species-groups based on morphological characteristics.
Pronunciation
How to pronounce Luridiblatta: /ˈluː.rɪ.dɪˌblæt.ə/
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Identification
Identification relies primarily on male genitalic structures and abdominal tergite . The is characterized by unusually high variation in the shape and structure of abdominal tergites T6, T7, and T8. Some possess strongly derived T6 with enigmatic structures interpreted as a possible drainage system. A taxonomic key to males is available for species identification.
Images
Distribution
Almost circum-Mediterranean, with records from Algeria, Libya, Morocco, Palestine, and Sardinia (Italy). One , L. trivittata, has been introduced to California, USA, where it is established as an species.
Human Relevance
L. trivittata is one of eight established in California. It is classified as an outdoor pest that occasionally enters buildings but does not normally reproduce indoors. Unlike indoor pest cockroaches, outdoor species such as Luridiblatta tend to be and herbivores rather than scavengers.
Similar Taxa
- Blatta orientalis (Oriental cockroach)L. trivittata females in California may be confused with female Oriental ; however, Luridiblatta are generally smaller and differ in abdominal tergite structure.
- Other Ectobiidae generaLuridiblatta share -level characteristics with other Ectobiidae but can be distinguished by the distinctive modifications of abdominal tergites T6-T8, particularly the derived structures on T6 found in some species.
More Details
Taxonomic revision
A 2022 revision in Zootaxa recognized 10 in the (7 newly described) and established three species-groups: longitubulata-group (4 species), trivittata-group (2 species), and beybienkoi-group (4 species). The revision included a showing presumed interspecific relationships.
Abdominal morphology
The exhibits unusually high variation in abdominal tergites T6-T8. with strongly derived T6 possess enigmatic structures that have been interpreted as possibly serving a drainage function, though this hypothesis remains unconfirmed.