Flame Auger or Orange-spotted Auger
Phylum: Mollusca, Class: Gastropoda, Order: Neogastropoda, Family: Terebridae, Genus: Hastula, Species: Hastula hectica · Terebridae (Auger family) · Gastropod (spiral, elongated turriculate shape, whole shell)
Species
Hastula hectica
Shell Type
Gastropod (spiral, elongated turriculate shape, whole shell)
Family
Terebridae (Auger family)
Size
Approximately 1.5 to 2 inches in length. This is a typical size for an adult specimen of this species, which generally ranges from 1 to 2.5 inches.
Color & Pattern
Creamy white base color with striking, vibrant orange-yellow rectangular or flame-like spots arranged in spiral bands along the whorls. The colors appear fresh and natural with good preservation, featuring a glossy finish on the aperture interior and lower columella.
Rarity
Common
Habitat
Shallow intertidal to sub-tidal marine environments, typically found buried in clean, fine sand flats, sandbars, and shallow coral sand zones.
Geographic Range
Indo-Pacific region, spanning from East Africa and the Red Sea through the tropical Indian Ocean to Southeast Asia, northern Australia, and Polynesia.
Description
An elegant and slender auger shell featuring a high, sharply pointed spire and numerous tightly wound whorls. The shell exhibits prominent axial ribs crossed by fine spiral striations, creating a neat grid-like texture on the upper whorls. The aperture is narrow and elongated, terminating in a short, notched anterior canal, characteristic of predatory sand-dwelling gastropods.
Key Features
Elongated, slender turret-like shape; distinctive bright orange-yellow square markings or spots against a white background; well-defined axial ribs; and a short siphonal canal.
Collector Value
Moderately sought after by shell collectors due to its bright, cheerful coloration and attractive geometric patterning. Commonly traded among regional shell enthusiasts, with an affordable value range typically between $2 to $10 depending on exact size and condition.
Condition Notes
Fine condition with bright, unfaded coloration, intact apex, and sharp outer lip. Minimal wear on the spire, grading as a Fine to Gem collector specimen.
Interesting Facts
Auger snails are specialized carnivorous predators that hunt marine polychaete worms buried in the sand. Many species in the family Terebridae possess a specialized venom gland and a modified radular tooth used to paralyze their prey before ingestion.
Ecological Role
Plays an important predatory role in benthic marine food webs by controlling polychaete worm populations in sandy habitats. They are preyed upon by carnivorous fish and larger predatory gastropods.
Similar Species
Hastula strigilata and Hastula matheroniana, which can be distinguished by differences in axial rib spacing, subtle variations in background coloration, and patterns of the orange markings.
Beach Finding Tips
Best found by beachcombing along tropical sand beaches during low tide, particularly after storms or heavy wave action that disturbs the nearshore sandbars. Sifting through fine shell drift lines can yield polished specimens.