Amphibolips bromus Pujade-Villar y Cuesta-Porta, 2020

[A photo of the gall appears on page 14 of the pdf]

[Gall: Monothalamous resulting from the deformation of a bud. Very thin and elongate, some 50 mm in length, reminiscent of the seeds of Bromus. The peduncle widens near the middle of the gall (4 mm in diameter), ending in a sharp point that tapers gradually from the midsection. The gall is thin-walled, with a smooth and hairless surface; a thin, spongy layer internally surrounds the central ovate larval chamber.]

Hosts: Quercus affinis, crassipes

[Biology: Only known from females. The mature gall was collected in May. The adults emerged at the end of the same month.]

[Range: Reported from the states of Mexico City, Hidalgo

Amphibolips bromus, n. sp.

[Photos of this gall appear on page 39 of the pdf]

Gall (Fig. 14H). A very thin and elongate bud gall, about 50 mm long, with greatest width near the middle, up to 4 mm wide; elongate and thin petioles widening near median part, pointy apex gradually tapering from middle part. The gall is thin-walled, with a smooth and naked surface; thin spongious layer internally surrounding the central ovate larval chamber, with mature galls having a length of 5.0–6.5 mm.

Hosts. Quercus affinis, Q. crassipes.

Biology. Only the females are known. The mature gall was collected in May; adults emerged by the end of May.

Distribution. Mexico: Hidalgo and Mexico States.