. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. CLASSIFICATION OF INSECTS 159 laying a number of eggs. (Mindarus (Fig. 260), Anomalaphis, Thelaxes). (MINDARlNsE) THELAXlN^ Antennas with narrow transverse sensoria; radial sector of fore wings arising from the stigma; wing veins much reduced so that the media is usually simple; cornicles usually absent or much reduced; sexual forms usually apterous and of small size; species usually producing galls; wax glands usually present. (Hormaphis, Cerataphis, Hamamelistes) HORMAPHIDINjE 255. Figs. 254-260. Hemiptera 254. Phyl
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. CLASSIFICATION OF INSECTS 159 laying a number of eggs. (Mindarus (Fig. 260), Anomalaphis, Thelaxes). (MINDARlNsE) THELAXlN^ Antennas with narrow transverse sensoria; radial sector of fore wings arising from the stigma; wing veins much reduced so that the media is usually simple; cornicles usually absent or much reduced; sexual forms usually apterous and of small size; species usually producing galls; wax glands usually present. (Hormaphis, Cerataphis, Hamamelistes) HORMAPHIDINjE 255. Figs. 254-260. Hemiptera 254. Phylloxera, wings (Patch) Phylloxeridae. 255. Adelges, wings (Patch) Adelgidae. 256. Aleyrodes, tarsus (Quaintance) Aleyrodidz. 257. Aleyrodes (Bemis) Aleyrodidae. 258. Aphis (Chittenden) Aphididae. 259. Macrosiphum, wings (Patch) Aphididx. 260. Mindarus, wings (Patch) Aphididae. Parthenogenetic females with functional rostrum, sexual forms greatly reduced and with no mouth parts; oviparous females producing only one egg; cornicles much reduced or absent; wax glands abundantly developed; wing venation usually reduced; antennal sensoria prominent ERIOSOMATID^E Anal tergite of new-born with four bristles, new-born agamic in- dividuals with four bristles on other tergites also; sexual individ- uals produced in the spring. (Forda, Aploneura, Melaphis, Pem- phigella) ' FORDING Anal tergite of new-born with four bristles, the other tergites with bristles forming six rows; sexual individuals produced after mid- summer. (Eriosoma (E. lanigerum, Woolly aphis of apple), Asiphum, Pemphigus, Prociphilus, Schizoneura (S. ulmi, Elm aphis)) ERIOSOMATIN^;. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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