IOWA ACADEMY OF SCIENCES. 
85 
each marg’in; two yellow spots on head. No quadrate patch. Simply a 
dusky band on eighth, and ninth abdominal segments. 
Apterous adult (Fundatrix): Length of antennae .52mm (joint I .069mm, 
II .06mm, III .13mm, IV .052mm, V .087mm, VI with unguis. 12mm). 
Length of body 1.82mm: width variable. Color light brown antennae and 
legs dusky brown. 
Larval fundatrix: Fresh moulted specimens yellow, older specimens 
light brown, antennae five jointed. 
Schizoneura corni var (?) panicola, Thos. — Root-type from roots of 
annual grasses: 
Winged vivip. form bred from Setaria, June 24, 1893 (probably spring 
migrant): Expanse of wings, 4.20mm: length of body, 1.67mm; width, 
•.84mm; length of antennae, .63mm. Joint III Avith one, and in a few speci- 
mens two sensora; joints IV, V and VI, one each. Color, grayish or green- 
ish white; antennae, head, prothorax and callosities dusky; seventh and 
eighth abdominal segments with dusky bands; some specimens show slight 
indications of pulverulent area; eyes red, legs dusky. Stigmal vein nearly 
straight. Cubital issuing close to second discoidal, in some cases folloAving 
the latter a short distance. Point of issue of furcal variable, from two- 
thirds to three-fourths the distance from base to apex of cubital. Stigma, 
.32mmX.16mm. Contents of the body sometimes of a slight yellow tinge. 
Apterous viviparous form: Length of body, 1.65mm; Avidth, 1.13mm; 
length of antennae, .57mm; sensoria only on joints V and VI. Color similar 
to winged forms. Antennae and legs slightly dusky. Sixth, seventh and 
eighth abdominal segments with dusky bands; head slightly dusky. 
Pupa: Length of body, 1.51mm; width, .78mm; length of antennae, 
.52mm. Sensoria, one each on joints V and VI. Color nearly vA^hite. 
In these forms the dusky bands on seventh and eighth abdom- 
inal segments extend entirely around on the ventral surface. 
Antennae and legs hairy; body slightly hairy. In most cases the 
beak reaches third coxae, and in apterous forms slightly beyond. 
Dr. Forbes^ quotes Thomas’ description for Schizoneura 
panicola and adds : 
Head and thorax are black; the abdomen pale, Avith imperfect dusky 
bands on the first and second segments, a quadrate dusky discal blotch, two 
terminal dusky bands, a series of quadrate dusky lateral spots, and two 
rows of black specks betAveen these and the discal blotch. The antennae 
are dusky throughout, sparsely pilose but not scabrous; .57rcim long; the 
legs are black, and tip of abdomen and the band upon the preceding seg- 
ment are also black. The beak is long, reaching to the abdomen; the body 
measures 1.57mm "by .7mm, and the wing is 1.7mm. The tip of the abdo- 
men is hairy, the tail is minute, the cornicles Avanting being represented by 
a simple pore on the surface, measuring .13mm in diameter, and having the 
appearance of a black circlet Avithin the dusky patch. Found on roots of 
Setaria and Panicum June 13th. 
A late fmm from roots of corn October 13, 1891. 
313th 111. Kept. 1884, pp 51-54. 
