266 Benj. D. Walsh on the Insects inhabiting the Galls 



Eighteen specimens ; eleven bred from the Tenthredinidous gall *S'. 

 pomum n. sp., five from the Tenthredinidous gall S. desmodioid.es n. 

 sp., one cut out of the Tenthredinidous gall iS. nodus n. sp., and one 

 captured at large. This species is the same shape and size as Antho- 

 nomus scutellatus Sch'onh. determined by LeConte, (which does not 

 seem to differ from A. erythropterus Say,)* but is distinguishable by the 

 elytra being almost entirely red (not red only on the lateral tip) ami 

 opaque (not subpolished) from the sculpture of the interstices. I for- 

 merly considered sycophanta as a mere variety of scutellaftis* and have 

 spoken of it under that name. (Proc. etc. Ill, pp. 547 and 619.) But 

 not only do they differ constantly, as has been already showu, but scu- 

 tellatus* is inquilinous in the Aphidian galls Caryseglobuli Walsh and 

 Carysefolise Fitch, in which its imago occurs as early as June 20 — 26, 

 shortly after which time those two galls dry up to nothing; whereas, 

 out of hundreds of specimens that passed through my hands, the earliest 

 sycophanta were met with July 30, and then only in the gall itself. 



There is still another Anthonomus, of the same size, shape, and near- 

 ly of the same sculpture as sycophanta, but differing in the head, (ex- 

 cept the extreme tip of the rostrum which is black,) the thorax and 

 the legs being of the same rufous color as the elytra, and in the thorax 

 having a conspicuous linear vitta of white hairs extending from the 

 white scutel to the head. Also, instead of an impressed puncture be- 

 hind the eyes, there is an impressed stria between the eyes; but some- 

 times, just as in sycophanta, there is a blackish cloud round the white 

 scutel, the blackish tint being occasionally prolonged along the suture. 

 Of this species I dug (Aug. 9 — 18) four imagos and several larvae out of 

 an undescribed Cecidomyidous gall — Cratsegi plica Walsh MS — on 

 Crataegus crus-galli ; always finding them unaccompanied by the au- 

 thor of the gall, and but a single Anthonomus in a single gall. And I 

 have also 11 specimens of the same insect in my Cabinet, labelled as 

 captured on the Thorn. In 1861 Dr. LeConte marked this species for 

 me as "undetermined." Hence, if hitherto undescribed, it maybe 

 named Anthonomus cratsegi. Thus it appears that the same genus An- 

 thonomus is inquilinous in Hymenopterous galls made by Sawflies, in 

 Homopterous galls made by Plant-lice, and in Dipterous galls made by 



* It appears by a letter which I have since received from Dr. LeConte, that 

 by some clerical error this insect was named by him for me as " scutellatus 

 SchOnh." instead of its proper designation " suturalis Lee." and that it is just 

 as I have supposed in the text, identical with erythropterus Say. Suturalis (Lee. 

 Ann. Lye. 1824) has the priority over erythropterus (Say, 1831), and scutellatus is 

 a distinct species. 



