PROCEEDINGS OF THE 



ENTOMOLOGICAL SOCIETY OF WASHINGTON 



VOL. 21 OCTOBER, 1919 No. 7 



A NEW SPECIES OF MATSUCOCCUS FROM PINES IN 

 CALIFORNIA (HEMIP.-HOMOP.). 



BY FRANK B. HERBERT, U. S. Bureau of Entomology. 

 Coccidae Subfamily Margarodinae. 



Matsucoccus fasciculensis, new species. 



Adult Female. 3 to 3.5 mm. long and 1 to 1.4 mm. broad, elongate oval 

 somewhat narrowed anteriorly (Plate 14, H.). In life the insect is of a 

 brownish color, with margin of abdomen and appendages tinged with yellow. 

 The derm is rough or crinkled. Antennae are transversely striate, nine- 

 segmented, bases approximate. The first segment is large, slightly longer 

 than broad, 2nd nearly as broad but much shorter, the remaining segments 

 becoming successively more slender, each being widest near the outer end. 

 Each segment bears three or more slender spines, segments 5 to 9 each also 

 bear two heavier spines (Plate 14, C.). Legs are moderately large, trans- 

 versely striated, the tarsus attached at the apex of the tibia and strongly 

 curved outward. Trochanter bears one long spine, the femur, tibia and 

 tarsus each bear a number of small spines. There are no digitules borne 

 on the tip of the tibia as in the genus Kuwania but instead the tarsus bears 

 two hair-like digitules and the tarsal claw two knobbed digitules (Plate 14, 

 D.). Eyes are present, mouthparts sometimes present. There are seven 

 abdominal and two thoracic pairs of spiracles from each of which 8 or more 

 tracheae arise (Plate 14, G.). The dorsum of the abdomen bears transverse 

 rows of large, simple pores (Plate 14, F.), while both the dorsum and the 

 venter bear internal ducts, which, viewed from above, have the appearance 

 of 8-shaped pores (Plate 14, E-). Small spines are present on both the dor- 

 sum and venter. Without a marsupium. Anal tube absent, anal ring not 

 discernible. 



Larva, first stage. Body is oval, acute at both ends (Plate 13, E.). An- 

 tennae are approximate, 7-segmented, segment 1 is large and broad, 2, 4 and 

 6 are long, 3 and 5 are short, 7 is medium, segment 2 bears 3 long spines and 4 

 and 6 each bear 2 broad stiff spines, 7 bears 4 long spines on its tip (Plate 13, D.). 

 The legs are rather small, the femur broad, the tibia and tarsus slender, the 

 latter bearing two knobbed digitules (Plate 13, C.). The trochanter bjars 

 one slender spine. Segmentation of the abdomen is distinct. There are 



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