174 PR0CEEDIKG8 OF THE NATIONAL MUSEUM. vol.56. 



3. ANISOTYLUS SIMILIS UTAHENSIS, new sabspecies. 



Plate 40, fie. 11. 



Female. — Entirely similar to A. simUis (Ashmead) in .structural 

 characters. Length of bod^^ (1.35 to 2.03) 1 .77 ; length of head, 0.63 ; 

 width of head, 0.62; width of vertex, 0.155; length of eye, 0.47; 

 width of eye, 0.30; length of antenna, 1.13; width of mesoscutum, 

 0.655; length of forewing, 1.57; width of forewing, 0.63 mm. 



Fronto vertex ochraceous orange (R.), the re.-t of the head and 

 underparts of thorax a little paler, the scrobes of the face purer yel- 

 low, the ocellar region of vertex suffused with metallic dark green, 

 the postorhital region with a slight greenish metallic luster, the center 

 of the occiput and posterior margin of mesopleura dusky; entire 

 upper parts of thorax including pronotum, the metapleura, and abdo- 

 men metallic blackish green, the axillae and scutellum opaque in 

 most aspects, the pronotum with a faint ochraceous transverse line 

 just before the posterior margin, the scutellum in two paratypes, a 

 and h, more or less dusky ochraceous orange, in one distinctly so only 

 at the sides, in the other entirely so except at the base; tegulae white 

 with the apical margin broadly brown. Antennae brow^nish black, 

 the scape on the upper side more brownish, often pale broA\ai. Front 

 and middle coxae and front femora very nearly concolorous with 

 underparts of thorax, front tibiae and tarsi and the middle and hind 

 femora a little more brownish, sometimes distinctly so, the middle 

 tibiae and hind tibiae and tarsi blackish brown, the latter more 

 brownish underneath ; hind coxae varying from dusky yellow to more 

 or less blackish with a greenish metallic luster, the middle tarsi and 

 spur yellowish white with the last two joints of the tarsi dusky. 

 Wings as in A. similis (Ashmead). 



J/aZ6.— Entirely suniiar to the female, although the head is some- 

 what purer yellow in color. Length, 1.27 to 1.69 mm. 



Described from 10 females, five males (type, allotype, and para- 

 types a to m), selected from a large series reared from larvae of 

 Scymnus americanus Mulsant and Scymnus lacustns LeConte, Murray 

 and Salt Lake City, Utah, May to September during the seasons of 

 1913 to 1915 (P. H. Timberlake). 



At first sight this form looks distinct enough to bear specific rank, 

 but in the absence of any structural characters to separate it from 

 A. similis (Ashmead) it seems best to consider it a geographical race 

 of that species. The rare individual variation with the orange- 

 colored scutellum is strikingly similar to A. similis texanus, and gives 

 additional weight to the belief that the three forms are geographical 

 variants of one species. 



Type.— C&t. No. 22043, U.S.N.M. 



