Canadian Journal of Arthropod Identification

The Cantharidae of Eastern Canada and Northeastern United States
CJAI 25 February 28, 2014

G. Pelletier & C. Hébert

| Abstract | Introduction | Descriptions of Species | Checklist | Family Cantharidae | Identification Key | Synopsis of Taxa | Acknowledgments | References | PDF | Cite |



Family CANTHARIDAE Imhoff 1856

(Based on Ramsdale (2002))

Description: Length 1.0 to 15 mm. Body elongate, often parallel-sided, mostly flattened, soft, with lightly sclerotized cuticle, especially on elytra and abdomen. Body usually with moderately dense, short, depressed pubescence. Head completely or partially visible from above. Eyes usually entire, moderately to strongly protruding; ocelli absent. Antennae elongate, pubescent, with eleven antennomeres; antennal insertions exposed from above, moderately to widely separate in most species. Labrum free, membranous, often concealed beneath clypeus. Mandibles elongate, curved with acute apex. Maxillae with densely setose galea and lacinia in most species; maxillary palpi 4 segmented; labial palpi 3-segmented.

Pronotum with lateral margins usually entire; base as wide as or narrower than base of elytra. Scutellum well developed and visible. Prothoracic coxae conical, prominent, projecting below prosternum, contiguous or nearly so; prothoracic coxal cavity absent; prothoracic trochanter exposed. Mesothoracic coxae contiguous or nearly so; cavities open laterally. Metaventrite with lateral margins sinuate; metathoracic coxae flattened, contiguous or narrowly separated.  Legs elongated and slender in most species with paired tibial spurs (except in Chauliognathini). Tarsal formula 5-5-5; fourth tarsomere expanded and ventrally bilobed.

Elytra soft, more or less parallel-sided or divergent, loosely fitted to pterothorax and sternites. Metathoracic wings usually well developed.

Abdomen with 7 (females) or 8 (males) freely moveable sternites with complete sutures; tergites 1-8 with paired lateral glandular pores. Male genitalia of trilobed type; tegmen composed of the phallobase (basal piece) and lateral lobes (parameres). Median lobe membranous in most species, with eversible internal sac, highly variable in structure and often ornamented with asperities. Additional sclerotized genitalic processes arising from interior of tegmen. Female genitalia with coxites and paraprocts well developed in most species.