May I, i9i6 Hyperaspis hinotata 199 



DESCRIPTION OF LIFE STAGES 



IMAGINAL vSTAGE 



The adult (PI. XXIV, fig. i, 2) is a small hemispherical beetle which passes the 

 winter in rubbish or under bark. It was described by Say (i) in 1826 from the 

 male as follows: 



" Black, lateral margin of the thorax and head yellow; each elytron with a rufous 

 spot; body rounded-oval, convex, punctured, black, polished; head pale yellow, 

 labrum and transverse line on the vertex piceous; thorax with a yellow margin 

 extending for a short distance on the anterior margin; anterior margin with an obsolete 

 yellowish line interrupted in the middle; el}-tron each with a rufous, orbicular, 

 central spot." 



EGG STAGE 



The egg (PI. XXIV, fig. 3), which was first obtained by the writer in 1913, isoblong- 

 elliptical and somewhat depressed; 10 specimens measured from 0.6 to 0.775 ™ni- 

 in length (average, 0.704 mm.) and from 0.218 to 0.4 mm. in width (average 0.312 mm.). 

 In color it is light salmon, changing ultimately to ash-gray; the shell is membranous, 

 becoming indented with age. Hatching takes place through a longitudinal slit on 

 the upper surface. 



IvARVAI^ STAGE ^ 



The first instar has characteristic markings, and represents a rather primitive type 

 of coccinellid larva. The other instars are similar to the first, but they are covered 

 by a white fleece of wax filaments which masks their characters. 



First instar (PI. XXIV, fig. 4). — Length 1.22 mm. (1.125 to 1.275 mm.), width 

 0.478 mm. (0.450 to 0.575 nim.); body grayish white, semiopaque, cylindrical, and 

 tapering caudad. Head black, with a white trident spot over the epicranial and 

 frontal sutures; three pairs of. ocelli present; length 0.125 mm., width 0.225 mm. 

 Thorax sparsely pilose, the segments each with a pair of black dots; prothorax with 

 two black clouded areas surrounding, but mainly cephalad of the dots. Abdominal 

 segments each with a row of eight hairs and a pair of long lateral setae; ninth segment 

 black above; tenth segment, the so-called anal lobe, retractile. 



Second instar (PI. XXIV, fig. 3, a). — Length 2.5 mm. (1.3 to 2.75 mm.), width 1.08 

 mm. ; body yellowish white, pubescent and covered with a white fleece. Head black 

 with the trident spot mildly obscured; length 0.175 mm., width 0.325 mm. Thorax 

 white, immaculate; legs gray, marked with black. Abdomen devoid of conspicuous 

 lateral setae. 



Third instar. — Length 2 to 3.38 mm., mostly 2.5 mm.; width 0.9 to 1.75 mm., 

 mostly 1. 125 mm. Head black, pigmentation on the posterior part of labium con- 

 fluent; length 0.275 to 0.3 mm., width 0.45 to 0.5 mm., mostly 0.475 ™m- Abdomen 

 with eight pairs of conspicuous blood pores. Otherwise as in the second instar. 



Fourth instar (PI. XXV, fig. i, 2). — Length 2.5 to 6.25 mm., mostly 5.5 mm.; 

 width 1. 125 to 2.5 mm., mostly 2.25 mm. Body subglobose, yellowish gray. Head 

 glabrous, white, flecked with black, pigmentation on the posterior part of labium not 

 confluent on the median line; length 0.3 to 0.375 mm., mostly 0.35 mm.; width 0.575 

 to 0.65 mm., mostly 0.6 mm. Otherwise as in the third instar. 



PUPAL STAGE 



Pupa (PI. XXV, fig. 3, 4) inclosed within the larval skin; length 2.03 to 4.19 mm., 

 mostly 3.9 mm.; width 1.77 to 1.86 mm.; color uniform chestnut-bro%vn ; ovate, with 

 a depressed segmented area on the dorsum; dorsal surface hispid; ventral surface 

 mildly pilose. 



' A detailed morphological study of this larva by Dr. Adam Boving is in course of preparation. 



36286°— IG 2 



