Cybocephalus californicus Horn

Smith, Trevor Randall, 2022, Review of the Cybocephalidae (Coleoptera) of North America and the West Indies with descriptions of two new species of Cybocephalus Erichson, Insecta Mundi 2022 (950), pp. 1-35 : 10

Cybocephalus californicus Horn

( Fig. 14–17 , 41–53 )

Cybocephalus californicus Horn 1879: 320–321 .

Distribution. Throughout North America, west of the Mississippi River from British Columbia, Canada, south to central Mexico, and east to Oklahoma and Texas.

Hosts. Aleyrodidae : unidentified species; Coccidae : Lecanium corni Bouché ; Diaspididae : Aonidiella aurantii (Maskell) , Chionaspis pinifolia (Fitch) , Diaspidiotus perniciosus (Comstock) , Diaspis echinocacti (Bouch é), Diaspis manzanitae Whitney , Lepidosaphes beckii (Newman) , Mercetaspis halli (Green) , Parlatoria blanchardi TargioniTozzetti ; Phoenicoccidae: Phoenicoccus marlatti Cockerell ; Pseudococcidae : Ehrhornia cupressi (Ehrhorn) .

Remarks. This is the most common species of Cybocephalus in western North America and is well represented in most North American collections. There seems to be a species cline between C. californicus and C. nigritulus along the Sierra Nevada mountain range. While the basal plate ( Fig. 53 ) of this phenotype bears some resemblance to that of C. nigritulus ( Fig. 109 ), the shape of the protibia ( Fig. 52 ) is clearly that of C. californicus ( Fig. 43 ), and the median lobe is indistinguishable from C. californicus . Therefore, this phenotype is considered to be C. californicus . For a full description of this species, see Smith and Cave (2006a).

Figures

Figures 10–21. Generic characters. 10) Metaventrite (outline) of Conglobatus fullertoni T. R. Smith. 11) Antenna of Conglobatus fullertoni T. R. Smith. 12) Proleg of Conglobatus fullertoni T. R. Smith. 13) Metaleg of Conglobatus fullertoni T. R. Smith. 14) Metaventrite (outline) of Cybocephalus californicus Horn. 15) Antenna of Cybocephalus californicus Horn. 16) Proleg of Cybocephalus californicus Horn. 17) Metaleg of Cybocephalus californicus Horn. 18) Metaventrite (outline) of Pycnocephalus metallicus Sharp. 19) Antenna of Pycnocephalus metallicus Sharp. 20) Proleg of Pycnocephalus metallicus Sharp. 21) Metaleg of Pycnocephalus metallicus Sharp.

Figures 41–53. Cybocephalus californicus Horn. 41) Antenna, variant. 42) Antenna, variant. 43) Proleg. 44) Mesoleg. 45) Metaleg. 46) Median lobe, variant. 47) Median lobe, variant. 48) Median lobe, lateral view, variant. 49) Median lobe, lateral view, variant. 50) Basal plate, variant. 51) Basal plate, variant. 52) Proleg, Sierra Nevada phenotype. 53) Basal plate, Sierra Nevada phenotype.

Figures 101–111. Cybocephalus nigritulus LeConte. 101) Antenna. 102) Proleg. 103) Mesoleg. 104) Metaleg. 105) Median lobe, variant. 106) Median lobe, variant. 107) Median lobe, lateral view, variant. 108) Median lobe, lateral view, variant. 109) Basal plate, variant. 110) Basal plate, variant. 111) Metanotum.