222 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.59. 



22. CALLIRHYTIS APICALIS (Ashmead). 



Plate 34, fig. 22. 



Andricus apicalis Ashmead, Proc. U. S. Nat. Mus., vol. 19, 189G, p. 120. No. 12. — 

 Cockerell, Ent. Student, vol. 1, 1900, p. 9. — Dalla Torre and Kieffer, 

 Wytsman, Gen. Ins. Hym. Cynipidae, 1902, p. 61, No. 6. — Thompson, Cat. 

 Amer. Ins. Galls, 1915, p. 5, 31. 



Callirhytis apicalis Ashmead, Mayr, Verh. Zool.-Bot. Ges. AVien, vol. 52, 1902, 

 p. 289.— Dalla Torre and Kieffer, Das Tierreich. Lief. 24, 1910, p. 573 — 

 Fullaway. Ann. Ent. Soc. Amer., vol. 4, 1911. pp. 354.— Felt, Key to Amer. 

 Ins. Galls N. Y. St. Mus., Bull. 200, 1918, p. 54. 



This species was described from material from Quercus wislizeni 

 A. de Candolle. The writer has taken galls on that oak in the San 

 Gabriel Mountains, at Los Gatos, and Bagby, California. He has 

 also found them on Quercus calif ornica Cooper in Sequoia National 

 Park, at Los Gatos and Dunsmuir, California, and on Quercus agri- 

 folia Nee at Carpinteria, Santa Margarita, Paraiso Springs, Los Gatos, 

 and St. Helena, California. The fresh galls are greenish- white, 

 tinged with red if exposed to light, fleshy, single, or in groups of a 

 few or in clusters that may be as much as 8 cm. in diameter and 

 contain as many as 35 galls. The fresh galls are found in May in all 

 stages of growth. By June 1 they are full grown. They then turn 

 brown and the juicy interior becomes converted into brittle, cavernous 

 tissue, with a series of thin plates radiating out from the hard basal 

 cell. In galls taken to Evanston, Illinois, pupae were found by 

 September 1 and also on October 10, November 17 (transformed 

 December 6), and December 23. Living adults were cut out of this 

 lot of galls on December 23, March 20, and April 18. Some larvae 

 do not pupate until the second autumn, however. The normal emer- 

 gence is probably in early spring, one of the type series having been 

 reared February 17. After the insects escape, the peripheral tissues 

 weather away in time, leaving the rough hard larval cells attached 

 to the bark to persist for years. 



Measurements of 33 pinned specimens, including the types, give the 

 range in size as 5.3-7.5 mm. Average, 6.1 mm. Using the width of 

 head as a base, the length of mesonotum ratio is 1.38; length of an- 

 tenna, 2.28; ovipositor, 4.26; wing, 3.6. Wing not ciliate on margin. 

 Propodeum with a median longitudinal ridge. 



23. CALLIRHYTIS OVATA, new species. 



Plate 34, fig. 23. 



Female. — Brownish-red, antennae infuscated distally and abdomen 

 dorsally, eyes black. Head broader than thorax, finely granulate 

 with whitish hairs on face, clypeus almost smooth, interocular area 

 1.1-1.2 times as broad as high, malar space 0.3-0.4 eye, mandible 2- 

 toothed, palpi 5- and 3-segmented, antenna 13- or 14-segmented, third 

 longer than first, fourth three-fourths of third, fifth equal to second, 



