コガネカブト（Cyclocephala pasadenae）Masked Chafer

 062116

062216

062616

062616

• 062116. LAco. CA mdr. 
• 本種については昨年同様。
• C. hirtaおよびC. longulaについてはまずはwrでltすること。C. melanocephalaを見つけるべくkgrに朝方出向くのも一案。
• 産卵飼育の方法についても要リサーチ。シューケースで栽培できる芝生を見つけること。
• 米国東部のコガネカブト：northern masked chafer (C. borealis)、米国南東部： southern masked chafer (C. lurida)、米国南西部：C. pasadenae およびC. hirta、フロリダ州限定：C. parallela。
• 「Field Guide To Beetles Of California」 (Arthur V. Evans and James N. Hogue著）116頁より以下抜粋：
• "Masked chafers of the genus Cyclocephala are restricted to the New World, with 250 species known primarily from the tropics.  The name “masked chafer” is derived from the fact that some species have a dark band connecting the eyes. Five species in California are distributed throughout the coastal plains, valleys, foothills,and deserts in summer. Cyclocephala hirta (10.5 to 14.0 mm) is yellowish brown with short hairs scattered over its body and is the only California species with a “bead,” or lip, along the posterior margin of the pronotum.  It is often encountered in large numbers on summer nights, swarming over grassy areas at dusk or attracted to lights at night.  A slightly darker, less hairy species, C. pasadenae (12.0 to 14.0 mm) (pl. 74) is also widespread and common in residential areas.  Cyclocephala longula (11.0to 14.3mm)is a bit more slender than the previous species, and its head and pronotum are slightly darker than the elytra.  This species is more common in the deserts and surrounding foothills.  Another species,distinctly bicolored, C. melanocephala (10.6 to 15.0 mm), is occasionally found at lights but is more often found deep inside the flowers of Iimson weed (Datura).  The elytra are pale yellowish brown, but the head and pronotum are dark reddish brown to black.  It is distributed from the south western United States to Argentina."
• 062416: 5AM. 一匹。21日より１−２匹のペース継続中。
• 062516: 0匹。気温が数日前に比べて低くなっている。
• 062616: 1匹
• 062716: 2匹
• 062816: 4匹
• 062916: 2匹
• 063016: 3匹

参考url:

http://bugguide.net/node/view/426455

https://entomologytoday.org/2016/02/10/jipm-article-on-masked-chafer-grubs-in-turfgrass-explains-management-techniques/