FIELD WORK—RELEASE OF PARASITES. it 
TasLeE XVII.—Release and parasitism of Cerambycobius cyaniceps. 
“A? P . “ ” “Ana i cc ” CO Ree AST OLa 
: arasite B.”’ Check C.”? Check D.” Area 100 yards Total 
area. area. area. across road. mail D.” 3 
© n \ o D 1 o n L o |m 1 o n n ) De lis 
Fst 
Date. ~ sala. 1? jsdla.]P edie |r jessie PP iigea |? sega. 
=| es oS |e ene oS jam bee os jw an ov Hm ere os Jam pares oD 
of }OS] MR [oF lS] MS] oR SG) WS Oo R/OF| WS oR l|OR| WR | oR [Oe WS 
olkal ss | Seales] SiRalss] Sesiss| olkalss] Slyalss 
ns Hl ga laFliSslanlazl2alaglas|Shl ag lo BiSelaaloelPates 
ro) 2s 7A or l@aloaW@la 2sl|o2\o 2s ola 2a\o eo” |£ aio" 
ao |£ael © wo |8ae}o | |8e2)5 |b Blo | |Ga So |e |e alo 
s 3 5 S |Isei5 |S |saIs |S BS SSM Wiese esl anes 
nD Zz my an IB | m i&@ | im 1 |e |m |4 | m IA | 
Sept. 12...... 1205 Os | OnO leony i Olbole eee Secelbeaee Hepes eee | eects 300 1 5083 
Released 3 
Sept d55ecca- Released 5 9, | 
1 | | 
(OVO |B Sa ea 95 0 0 | 168 (Oh MOOR Se eee ook ean eealleeellatcse Sede | Seis ., Maras 258} 0} 0.0 
OcgivGeetee: 188 0 oO) 125 0 Ol aes See aoe 218} 0/| 0.0} 96; 0} 0.0 | 622] 0} 0.0 
Oci al OMessealecotee tera sts slarotall averete Se Seer 247 OM MORON Sores | teeilecrec | Gator See | reser aad 0 | 0.0 
| 
Taste XVIII.—Parasitism of Eurytoma tylodermatis. 
| “ee ”? 
“A.” Parasite | “B.” Check | “C.” Check | “D.” Area en ane Total 
area. area. area. across road. from <D ” Sn 
oO n L oO n 1 o n I oO n joie oO n U o n i 
= je |2 |2 8/8 |2 lasl@ 2 Sle & |8)/é |2 [8 
Date. * fos] eis ei les erie sie. iesia. |" egle 
=| us) r= N| oT SS lace] oF eS ly] oD lH ue) =| Nilo 
oe (Sal 8 |S les| GR) Ce SS| HS [SESE He SelSS| Hel Ce lsslhe 
Sika ss | SRG SS) SlealSs| SealSs| Salsa] sip alss 
BF os) Ba | oF OR Ba | oF eal b a |e eal a ler cal aa) oP okie 
mw |8a}| 9 a0 RS) tm |salo | [sails | |8alo tw |8ajo 
s |5e5 |s Ble) Nee. ween Sace “la SS eae lie rene 
Chen Zi CE Zit |e Ze OSC ee Eilon 91 2ip Pan ace all Za 84 
Sept.nl2:-2 =. 120} 0/ 0.0 180 Sa lsGGi eee Sec eheceees Sees pees Sr ese | ese 300 3) 120 
Oe Qe 9A 2 | 2:10) 163 0 OM as—5- Sal Sete accel cao eagee See Sera tear 258 ZAOnt 
Octibn eas 3 18. 1 54 | 125 1 BOM ere See seas | 218} 2] 0.91) 96 6 |6.25 | 622 | 10 | 1.6 
ORs iae Raaahe isin ais anal) 247/20) 10301 eases ee Bipese. [ease 247 | 0 | 0.0 
| 
III. ParastreE BREEDING Work. 
Four new primary parasites of the boll weevil have been bred this 
year, and several definite cases of predaceous attack have been 
observed. There are now known 11 primary hymenopterous para- 
sites, 1 primary dipterous parasite, 2 acarid parasites (at least), 2 
coleopterous enemies, and 2 ant enemies which attack the weevil 
stages in the cotton forms. They are as follows (insects which 
attack the adult weevils are omitted from the consideration): 
PRIMARY PARASITES. 
Hymenoptera. 
Chalcidoidea. 
Torymide, Monodontomerinz. 
1. Microdontomerus anthonomi Cwid. (Texas). 
Eurytomide. 
2. Eurytoma tylodermatis Ashm. (Mexico, Texas, Louisiana). 
3. Bruchophagus herrere Ashm. (Mexico). 
Encyrtide, Eupelmine. 
4. Cerambycobius cyaniceps Ashm. (Louisiana, Texas). 
Pteromalide, Pteromaline. 
5. Catolaccus incertus Ashm. (Texas, Louisiana). 
