Phymacysta, Monte, 1942

Golub, Viktor B., Popov, Yuri A. & Guilbert, Eric, 2008, Phymacysta stysi, a new species of lace bug from Dominican amber (Hemiptera: Heteroptera: Tingidae: Tinginae), Acta Entomologica Musei Nationalis Pragae 48 (2), pp. 485-490 : 488-489

Key to species of Phymacysta and fossil Leptopharsa

Here we provide a key to all species of the genus Phymacysta , including the fossil species described below, and to the fossil species of Leptopharsa . The extant species of Leptopharsa are not included in this key because it would require a revision of the genus that includes more than 100 species, which is far beyond the aim of this study.

1 Paranota moderately wide, raised, not reflexed as to form a shell, median carina wide but never highly elevated, hood moderately large. Leptopharsa Stål, 1873 ............... 2

– Paranota wide, reflexed, shell-like, if not reflexed or shell-like then median carinae wide and highly elevated or hood large and cyst-like. Phymacysta Monte, 1942 ............... 4

2 Costal area of hemelytra with 4-5 rows of areolae in basal half of its length. Paranota with three rows of areolae along most of their length or at least in anterior half. Body length 2.85 mm. ......................................... Leptopharsa frater Golub & Popov, 2003

– Costal area of hemelytra with 2-3 rows of areolae in basal half. Paranota with two rows of areolae throughout or at most with two areolae in a third row in the widest part. ... 3

3 Lateral margins of paranota slightly sinuate at middle with two rows of areolae. Larger, body length about 4.25 mm. ................... Leptopharsa poinari Golub & Popov, 2000

– Lateral margins of paranota evenly rounded, with two and anteriorly three rows of larger areolae. Smaller, body length 3.2 mm .... Leptopharsa evsyunini Golub & Popov, 2000

4 Paranota reflexed and shell-like. ................................................................................. 5

– Paranota raised but not reflexed as to form a shell. .................................................... 7

5 Median carina very low, without areola. ............................. Phymacysta stysi sp. nov.

– Median carina very high, with areolae. ....................................................................... 6

6 Pronotum unicarinate. ...................................... Phymacysta magnifica (Drake, 1922)

– Pronotum tricarinate. ................................ Phymacysta vesiculosa (Champion, 1897)

7 Median carina higher than hood, hood moderately large. ............................................. ......................................................................... Phymacysta mcelfreshi (Drake, 1918)

– Median carina lower than hood, hood very large and cyst-like. ................................. 8

8 Pronotum unicarinate. .................................... Phymacysta tumida (Champion, 1897)

– Pronotum tricarinate. ........................................ Phymacysta praestans (Drake, 1927)