Lineatopsallus biguttulatus

The specific epithet "biguttulatus" refers to two small spots (Latin: bi- = two, guttulatus = spotted), likely describing a distinctive color pattern on the dorsum. As a member of Miridae, it possesses the family-diagnostic features of cuneus and embolium on the hemelytra. Definitive identification requires examination of male genitalia, particularly the left paramere and vesica structure, which are species-specific in this genus. The genus Lineatopsallus is characterized by linear fasciae or stripes on the pronotum and forewings, though species-level distinctions are subtle and require specialist knowledge.

Records indicate association with arid and semi-arid environments of the Sonoran Desert and adjacent regions. Known localities include desert scrub and dry wash vegetation in Arizona, New Mexico, and Baja California.

Documented from the southwestern United States (Arizona, New Mexico) and northwestern Mexico (Baja California, Baja California Norte). The species occurs in the Sonoran Desert biogeographic region, with scattered records suggesting a patchy distribution correlated with suitable desert habitat.

Adults have been recorded from March through October, with peak observations in spring (March–May) and late summer (August–September). This pattern suggests bivoltine or multivoltine development with activity periods coinciding with favorable temperature and moisture conditions in desert environments.

• Lineatopsallus lineatusCongeneric species with similar linear pronotal pattern; distinguished by genitalic morphology and details of coloration and spotting
• Other Psallus-group genera (e.g., Psallus, Phoenicocoris)Similar small size and general habitus; Lineatopsallus distinguished by the combination of linear pronotal markings, specific antennal proportions, and male genitalic structure

• BugGuide
• GBIF taxonomy match
• iNaturalist taxon
• Catalogue of Life