HOW TO KNOW THE INS^-QS 



40b Anterior coxae conical, prominent. Neck narrow. Eyes 

 rounded. (The Ant-like Flower Beetles) Fig. 131 



Family 45, ANTHICIDAE 



Fig. 131. Motoxus mono don Fab. 



X A\ /■' Dull brovmlsh yellow, thickly covered with 

 grayish hairs. Thorax and elytra marked with 

 black. This and other members of the genus are 

 peculiar In having a thick horn projecting for- 

 ward from the front of the thorax. The head Is 

 usually held down and Is not visible from above , 

 Length 2.5 to 4 mmi. 



As the name indicates, many of the members of 

 this interesting family are shaped like ants. 

 They are beautifully marked and quite abundant. 

 It is probable that the number of species in 

 Iowa is quite large, but the family has not 

 been thoroughly studied. 



Figure 131, 



41a Hind coxae plate-like, abdomen usually pointed (a). (The 

 Tumbling Flower Beetles) Fig. 132. Family 37, MORDELLIDAE 



Fig. 132. Mordella oculata Say 



Antennae, tibiae and tarsi dull red; head, 

 thorax and abdomen blackish with yellow and 

 gray markings. Length 5-7 mm. 



The Tumbling Flower Beetles are so named be- 

 cause of their habit of tumbling actively about 

 when disturbed until out of reach of the enemy. 

 They are wedge shaped with arched body and head 

 bent down. Most of the rather large number of 

 species are of small size. 



41b Hind coxae not plate-like. (The Melandryid Bark Beetles) 

 Figs. 133 and 126. Family 90, MELANDRYIDAE 



Fig. 133. Qsphya varians (Lee.) 



Black, sparsely clothed with fine gray 

 prostrate hairs; margin and middle of thorax 

 reddish yellow. Length 5-8 mm. 



Two of the larger and more common species 

 are Penthe obllquata Fab. and Penthe pimelia 

 Fab. Both are black, the latter wholly so, 

 v/hlle the former has the scutelluir. covered 

 with rust-red hairs. 



Figure 133, 



42a Tarsi in reality with five segments, the fourth very small 

 and hidden between prongs of third. (See Fig. 83a) . • ... 45 



71 



