Dactylosphaera globosum
Gall No. 10.

Hosts: Carya amara [cordiformis]

This is the gall of my B. globosum, described at length in Proc. Acad. Nat. Scr. Phil., Jan. 1867, and, with No. 8, are the only known Hickory galls that have the character of being soft and leathery in structure. The perfect insect was found between Sept. 20th, and Oct. 20th 1866, since which time I have not seen it. I then described it as being found on what I supposed to be Carya glabra, but which now proves to be C. amara. See below.

This is so manifestly distinct from caryae-globuli, Walsh, that a comparison is uncalled for; the latter is said to mature in June, while globosum matures in October; and the opening of the galls are quite different in shape, that of globosum being rounded and on a nipple-like projection, while that of caryae-globuli is an elongated slit.

I am not at all certain that Gall No. 8, is specifically distinct from this.

Dactylosphaera coniferum, n. sp.
Gall No. 11

Hosts: Carya amara [cordiformis]

Very thick, depressed, slightly elevated above the leaf conical below ; contained many larvae and yellow pupa, but at this date (June 18th) too late to find the eggs. This gall is almost like No. 4 with the walls much thicker.

Phylloxera globosa (Shimer)

Galls on leaves of Carya amara (= cordiformis) in Illinois are mostly rather large, globular and projecting equally on both sides of leaf, or conical and projecting only below leaf, with flat circle above ("form conifera"); smooth, leathery, pale yellowish green to dark green, with a small central opening below leaf surrounded by small bracts. According to Pergande (1904), the smaller galls included in Shimer's (1867) original description were those of Ph. caryeaesemen. Alatae emerge very late in year, in late September-October. The life cycle is unknown.

Phylloxera globosa

Carya sp.
Conical or globose leaf galls with distinct orifice and containing aphids
Gall large, walls fleshy, globular, projecting about equally on both leaf surfaces, nipple short, with four to five short, stout pubescent bracts surrounding the orifice, curving outwards when old, size variable.

Phylloxera globosum Shimer.

Dactylosphaera globosum Shimer.
Dactylosphaera coniferum Shimer.
Phylloxera c.-globosum

I have had no opportunity to add anything new to what has been recorded by Shimer, and reproduce such parts of the original description as undoubtedly have reference to this species, substituting migratory female for his term male.

In his original description Shimer has confounded this large gall and its architects with those of the rather minute galls of c.-semen Walsh, found growing at the time upon the same leaves, notwithstanding that, as he himself states, none of the small galls contained the winged form, but were simply crowded with the so-called larvae which, as has already been shown, were, without much doubt, the true sexes.

"Gall variable in size, often numerous in the parenchyma of the leaf, others on the veins and leaf stalks, all opening on the lower side of the leaf, with a very small orifice; smoothish, of a somewhat leathery structure, pale yellowish-green, glaucus or dark green; sub-globose or some- times somewhat irregular, without any of the mealy sugary dust within, which is common in galls of the Aphis family. Dactylosphaera coniferum Shimer, I consider to be but a variety of D: globosum.

Phylloxera globosa

There were no Phylloxera specimens or dried gall specimens in the U.S. National Collection for Phylloxera globosa (Shimer), so it has been designated as nomina dubia.