February, '19] HAYES: LACHNOSTERNA LANCEOLATA 115 



years seems to be the normal length of the life-cycle in Kansas. The 

 generations overlap each other so that all stages appear every season. 

 This is evident from the large number of adults present each year. 

 Table IV shows the number of beetles collected at Manhattan, Kansas, 

 during the past three seasons. 



Table IV — Record op Collections of Adults 

 Year 1916 1917 1918 



Males Females Total Males Females Total Males Females Total 

 Number 557 1506 2063 1529 2004 3533 3322 2382 5704 



Food Plants 



The adult beetles are quite general feeders and have been observed 

 eating a variety of different plants. From the literature, cotton, corn, 

 wild sunflowers, collards, and careless weed (Amaranthus) are reported 

 as food plants. Table V lists a number of plants on which the adults 

 were observed feeding. 



Table V — Food Plants of Lachnosterna lanceolata 

 Observed Feeding in the Fields Observed Feeding in Cages 



Pigweed — Amaranthus sp. Pigweed — Amaranthus sp. 



Crab grass — Panicum sanguinale Sunflower — Helianthus sp. 



Evening Primrose — Oenothera biennis* Corn — Zea mays 



Pepper grass — Lepidium sp. Evening Primrose — Oenothera biennis* 



Corn — Zea mays Elm — Ulmus americana 



Bindweed — Convolvulus sp. Cherry — Prunus sp. 



Bladder Ketmia — Hibiscus trionum Sumach — Rhu^ sp. 



Ironweed — Vernonia baldwinii* Willow — Salix sp. 



Shoestring plant — Amorpha canescens* Oats — Avena saliva 



Sumach — Rhus sp. Brome-grass — Bromus inermis 



Clover — Trifolium spp. Foxtail — Setaria sp. 



Little Ragweed — Ambrosia psilostochyla* Smar tweed — Polygonum sp. 



Vervain — Verbena striata* Apple — Pyriis malus 



Hoary Aster — Aster sericeus* Kafir — Andropogon sorghum 



False boneset — Kuhnia eupatorioides* Crab grass — Panicum sanguinale 



Sampsoni snakeroot — Psoralea pedunculata* Pepper grass — Lepidium sp. 



Golden rod — Solidago rigida* Milo — Andropogon sorghum 



Oats — Avena saliva Peach — Prunus persica 



Liatris (spicta.') Curled dock — Rumex crispus 



Venus' looking glass — Specularia perfoliala* Beet — Beta vulgaris 



Thistle — Cirsium sp. Bean — Phascolus vulgaris 



Yarrow or Milfoil — Achillea millefolium* Potato — Solanum tuberosum 



Little Blue Stem Grass — Andropogon Cabbage — Brassica oleracea 



scopari^ls Tomato — Lycopers-icum esculentum 



Sunflower — Helianthus sp. Peas — Pisuni sativum 



Alfalfa — Medicago saliva Bladder ketmia — Hibiscus trionum 

 Cocklebur — Xanthium sp.* 

 Big Blue Stem Grass — Andropogon furcatus 



It is interesting to note that the adults were frequently found feeding 

 abundantly on wild clover while an adjacent alfalfa field was always 

 ♦ Det. H. F. Roberts 



