1899 



ENTOMOLOGICAL NEWS. 



Antenna- and les of 

 Riper sia minimus. 



THE TENTH ANTS'-NEST SPECIES OF COCCID FROM 



MASSACHUSETTS. 



BY J. D. TIXSLEV and GEO. B. Ki\<;. 



Ripersia minimus, ij. sp. 



Alult v. L3n^th biraly 1 nrii.; coverd.'l with while secretion; 

 color re Id ish brown : rather plump. No lateral or caudal fi laments 

 observed with a hand-leuse. Ovisac, en- 

 closing the female, ellipsoidal, about 2 mm. 

 long and 1 1 4 mm. wide. Clear white, rather 

 compact, cottony nutter. Eggs oval, pale 

 yellow, quite small Antennae concolorous 

 with the body or nearly so ; 7-jointed. 7 long- 

 est aul thickest, 65-75 u long ; 2 and 3 usual- 

 ly subequal, although 2 may be the longer, 

 and 1 is sometimes longer than 3,2 and 3 about 

 40 u long : joint 1 is usually about 30 u long ; 

 6.5 and 4 ara more or Iss^ globular in shape 

 and usually 6 is the longer and 4 and 5 are 

 subequal, although 4 may be the shortest ; 

 G i':> oat 23 u loii?, 4 and 5 about 25 u Ion?. Tiie following formulae 

 have been observed: 



7213(46)5-721(346)5. 



7(23) 1645-7(12)3465. 



7(23)16(45) 



7231654 



All the joints bearing rather large hairs. Legs concolorous with 

 tha body, rather stout and largecomparad with the size of the body 

 Femur 101 u long x 45 m wide; tibia 93 u long ; tarsus 60 u long ; 

 tarsal digitules slejder hairs without knobs ; claw stout, with rather 

 large denticle, 17 ulong; digitules of claw long, slender knobbed. 

 Epidermis beiring rather numerous gland spots and some scattered, 

 rather large hairs. The margins of the abdominal segments beat- 

 groups of conical spines, usually two conical spines in a group. 

 Anal ring with the usuil six hairs. Caudal tubercles normal, each 

 with a r it her large seta, 100 u long, and several large hairs anil 

 conical spines. 



Habitat. South Lawrence, Mass., October 15, 1898, on the 

 root of a plant in the nest of Lnx!ns .Intrririi.inis Em. 



This is the smallest Dactylopiid with which we are yet ac- 

 quainted, being probably a little smaller than liifnTxhi nnni- 

 < /'.% Mask, which is given as 1-24 inch = 1 mm. This dill'crs 

 from R. rn>ii ; <-ix Mask, in being 7 -jointed and not having the 

 antennae so close together. 



