Takecallis, Matsumura, 1917

Qiao, Ge-Xia & Zhang, Guang-Xue, 2004, Review Of The Genus Takecallis Matsumura (Homoptera: Aphididae: Myzocallidinae) From China And Description Of One New Species, Raffles Bulletin of Zoology 52 (2), pp. 373-378 : 374

Key to species of Takecallis

Alate viviparous female

1. Antennae longer than body; siphunculi with a hair at the base; secondary rhinaria arranged on black area of antennal segment III; white or yellow in life ................................ 3

– Antennae shorter than body; siphunculi without hairs; secondary rhinaria arranged on pale or dusky area of antennal segment III; green, brown and yellowish brown in life ............... 2

2. Anterior abdominal tergites with at least 4 dorsal hairs excluding marginal ones; secondary rhinaria arranged on basal 1/2 of antennal segment III ...................... T. sasae (Matsumura)

– Each abdominal tergite with 2 dorsal hairs excluding marginal ones; secondary rhinaria arranged on basal 1/3 of antennal segment III ................................. T. taiwanus (Takahashi)

3. Cauda black. Abdominal tergites pale, without any patches ..................................................... T. arundicolens (Clarke)

– Cauda pale or dusky .............................................................. 4

4. Thoracic dorsum pale, without any stripes .... T. takahashii (Hsu)

– Thoracic dorsum with dark stripes, at least on pronotum ..... 5

5. Dark stripes only on pronotum .............................................. 6

– Dark stripes on total thorax dorsum. Abdominal tergites I - VII with two rows of separated spinal and “8-shaped” black spots ........................................................... T. arundinariae (Essig)

6. Abdominal tergites II(sometimes I)-VII each with 1 pair of round patches, tergite VIII with a spinal patch; ultimate rostral segment without accessory setae; distal half of hind tibia distinctly thickened, widest diameter 1.89 times as long as basal diameter of the segment, but 1.33 times in fore and middle tibia; fore wing with brown subcostal veins, other black markings absent .......... T. assumentus , new species

– Abdominal tergites pale, without any patches; ultimate rostral segment with 2 pairs of accessory setae; hind tibia normal, similar to fore and middle tibia; fore wing with extensive black markings on costal veins and with spot on base of pterostigma .............................................. T. affinis Ghosh