Chelopistes meleagridis

Distinguished from other poultry lice by its large size relative to turkey hosts and placement within the genus Chelopistes. Specific morphological diagnostic features are not detailed in available sources. The species is specifically associated with turkeys (Meleagris gallopavo), which may aid in field identification when host identity is known.

Occurs on domestic turkeys, particularly on breast feathers. Laboratory rearing requires controlled conditions: temperature of 35°C, relative humidity exceeding 80%, and darkness. Off-host survival and reproduction are possible under these artificial conditions when appropriate food sources are provided.

Recorded from domesticated turkeys on farms in Juiz de Fora and Matias Barbosa municipalities, Minas Gerais state, Brazil. GBIF distribution records indicate broader occurrence across Europe, Africa, Asia-Temperate, Asia-Tropical, and Australasia regions.

Feeds on turkey feathers and epidermal tissues. Laboratory studies demonstrate that feathers alone are insufficient for development; inclusion of dehydrated turkey skin fragments is essential, with 48% of lice reaching adulthood on the combined diet versus 1.3% on feathers only.

• Meleagris gallopavo - definitive hostdomesticated turkey; parasite collected from breast feathers

Egg incubation averages 3.81 days (range 3-5 days). Nymphal development proceeds through three instars: first instar (mean 9.04 days with skin-supplemented diet, 7.72 days with feathers only), second instar (mean 7.42 days), and third instar (mean 9.41 days). Total development from egg to adult averages 29.38 days (range 24-38 days) with no sexual difference in developmental duration. Sex ratio of emerging adults is equal. Egg viability is high; all 150 eggs monitored in laboratory study were viable.

Females attach eggs to feather barbules. Females live significantly longer than males. Males can be replaced with new partners during reproductive observations without disrupting female reproductive output. High reproductive rates relative to other Ischnocera species.

Ectoparasite of domesticated turkeys with economic importance to poultry production. Impacts host health and productivity through direct infestation.

Economic pest of domestic turkey production. Laboratory studies aim to inform control strategies through improved understanding of reproductive biology and developmental requirements.

• Other Chelopistes speciescongeneric lice may share morphological features and turkey host associations; specific distinguishing characters not documented in available sources
• Other Philopteridae on poultryfamily members share general morphology and habitat on feather surfaces; host specificity and size may aid differentiation

• ectoparasite
• poultry pest
• chewing louse
• Ischnocera
• laboratory model

• BugGuide
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life
• Reproduction, development and habits of the large turkey louse Chelopistes meleagridis (Phthiraptera: Ischnocera) under laboratory conditions