{"id":26017,"date":"2022-03-28T20:54:37","date_gmt":"2022-03-28T20:54:37","guid":{"rendered":"https:\/\/agsci.colostate.edu\/divi-agbio\/?post_type=ipm-pests&p=26017"},"modified":"2024-03-05T21:03:28","modified_gmt":"2024-03-05T21:03:28","slug":"weevil-larvae","status":"publish","type":"ipm-pests","link":"https:\/\/agsci.colostate.edu\/agbio\/ipm-pests\/weevil-larvae\/","title":{"rendered":"Weevil larvae"},"content":{"rendered":"

[et_pb_section fb_built=”1″ admin_label=”section” _builder_version=”4.16″ global_colors_info=”{}”][et_pb_row column_structure=”1_2,1_2″ admin_label=”row” _builder_version=”4.16″ background_size=”initial” background_position=”top_left” background_repeat=”repeat” width=”100%” global_colors_info=”{}”][et_pb_column type=”1_2″ _builder_version=”4.16″ custom_padding=”|||” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_text admin_label=”squiggle-left” _builder_version=”4.24.1″ _module_preset=”default” header_font=”||||||||” header_text_align=”left” header_font_size=”22px” width=”75%” module_alignment=”left” custom_margin=”||||false|false” custom_padding=”||||false|false” global_module=”23371″ saved_tabs=”all” global_colors_info=”{}”]<\/p>\n

\t\t

\n\t\t\t\n\t\t\t\t\n\t\t\t<\/svg>\n\t\t<\/div>\n

[\/et_pb_text][et_pb_text _builder_version=”4.24.2″ _module_preset=”default” header_font_size=”36px” hover_enabled=”0″ global_colors_info=”{}” sticky_enabled=”0″]<\/p>\n

Weevil larvae<\/h1>\n

Order: Coleoptera<\/span><\/span>
Family: Curculionidae<\/span><\/span><\/p>\n

\u00a0<\/h2>\n

Description<\/h2>\n

Weevil larvae or billbugs develop\u00a0<\/span>below ground in turfgrass and injure plants by feeding on their roots. At least two species of billbug are of concern in Colorado turfgrass. They are the bluegrass billbug (Sphenophorus<\/em> parvulus<\/em>) and the Rocky Mountain billbug (Stenophorus cicastristriatus).<\/em> Adults are beetles with a characteristic snout and gray or <\/span><\/span>black bodies, up to13 mm (0.5 inches) long and have a pronounced snout with chewing mouthparts. Adult weevils will \u201cplay dead\u201d when disturbed, drawing in their legs and remaining motionless. Adults can cause chewing injury to turf as well, but their feeding causes minimal impact and is rarely noticeable. The larval stage is the primary damaging stage. Larvae are legless, generally white or cream, with a brown head capsule. They may reach 7.5-13 mm (0.3 to 0.5 inches) long when full-grown.<\/p>\n

[\/et_pb_text][et_pb_blurb title=”Quick Facts” use_icon=”on” font_icon=”||fa||900″ icon_color=”#F15625″ image_icon_width=”36px” _builder_version=”4.21.0″ _module_preset=”default” header_level=”h3″ header_font=”|||on|||||” header_text_align=”center” header_font_size=”26px” background_color=”#FEBD3B” custom_margin=”|4%||4%|false|true” custom_padding=”4%|4%|4%|4%|true|true” global_colors_info=”{}”]<\/p>\n