Notes on Forest Insects. II. Notes on Several Species of Pityophthorus Breeding in the Limbs and Twigs of White Pine

Eustrophus bicolor Fabr. Full-grown Larva. Length 6 to 7 mm. Width 1.5 to 1.8 nim. Elongate, subcylindrical, sparsely hairy, whitish or sordid white except head which is dark and the dorsal surfaces of the thoracic and abdominal segments which bear dark brown to black subrectangular transverse areas giving the dorsal surface a banded appearance. Head large; antenna 4-segmented, each segment subcylindrical, basal segment widest, second segment shortest, third segment bearing the slender fourth segment and a minute spine. Maxillary palpus subcylindrical, 3-segmented, almost as long as antenna, first and second segments subequal in length, third segment one and one-half times length of first. Labial palpus subcylindrical, short, %jointed, joints equal in length. Abdominal segments one to eight slightly produced at sides. Ninth abdominal segment bears two dorsal, prominent, reddish-brown tubercles, each tipped with a chitinous hook slightly curved anteriorly. Bases of dorsal tubercles covered with minute, dark tubercles each bearing a hair. Legs well developed, sparsely hairy, anterior surfaces of femora well supplied with minute spines. Dorsal surface of head bears a subcircular, faintly impressed line. Faint, median, whitish line on dorsal surface of first and second thoracic segments sometimes continuing on abdominal segments. Spiracles on second thoracic and abdominal segments one to eight. Abdominal spiracles just below dorsal colorations. Pupa. Length 5 to 6 mm. Width, 2 mm. Whitish, elongateoval, rounded anteriorly, gradually tapering posteriorly. Head and thorax covered with minute tubercles, each bearing a long hair. Transverse patches of similar hair-bearing tubercles on dorsal surfaces of remaining segments. Ventral surface almost devoid of hairs. Adult. This was described by Fabricius in 1798 (Ent. Syst. I, p. 497). Sharp1 states that about 200 species of Melandry id~ are known, chiefly from temperate regions and that they frequent dry wood or fungi. He also says that the few described larvae are varied in their details and cannot be generalized a t present. Blatchley2 writes that E. bicolor is common throughout Indiana, January 19 to September 20 and found beneath bark especially that of fungus covered logs.