Morphological variability and evaluation of taxonomic characters in the genus Erythemis Hagen, 1861 (Odonata: Libellulidae: Sympetrinae) Author Rodríguez, Fredy Palacino Author Sarmiento, Carlos E. Author González-Soriano, Enrique text Insecta Mundi 2015 2015-07-10 2015 428 1 68 journal article 10.5281/zenodo.5353155 1942-1354 5353155 A5F39894-9426-4F2C-89CC-E812671E85E4 Key to Males of Erythemis 1. Dark basal spot on HW absent ..................................................................................................... 2 — Dark basal spot on HW present (in some specimens very pale and small) ............................... 3 2(1). White abdominal appendages ................................................. Erythemis simplicicollis (Say) — Black abdominal appendages ..................................................... Erythemis collocata (Hagen) 3(1). Dark basal spot on HW not reaching the MP crossvein or AA (Fig. 26); lateral lobe of vesica spermalis extended into posterior region less than medial lobe ( Fig. 20 and 21 ) .................. 4 — Dark basal spot on HW reaching the MP crossvein and AA or beyond (Fig. 26); lateral lobe of vesica spermalis extended into posterior region more than medial lobe ............................... 5 4(3). Thorax and first two or three abdominal segments green; S4-7 green with black or brown stripes in dorsal region; S8-10 all black or brown; radial planate with double cells (Fig. 28) ............. .......................................................................................... Erythemis vesiculosa (Fabricius) — Thorax, dorsum of abdomen, and basal spot on HW brown (sexually immature M); or thorax and abdominal S1-3 blue and abdominal S4-10 red (mature M); no double cells on radial planate ................................................................................ Erythemis peruviana (Rambur) 5(3). Posterior lobe of vesica spermalis covered by lateral lobe .......................................................... 6 — Posterior lobe of vesica spermalis not covered by lateral lobe ( Fig. 21 ) ..................................... 7 6(5). Thorax and dorsum of abdomen red or reddish-brown; cornua diagonal respect to transverse axis of vesica spermalis ( Fig. 22 and 23 ) ........................... Erythemis mithroides (Brauer) — Abdominal dorsum black or black and yellow; cornua parallel respect to transverse axis of vesica spermalis ( Fig. 20 ) .......................................................................... Erythemis attala (Selys) 7(5). Dark basal spot on HW reaching the row of marginal cells of the anal angle .......................... 8 — Dark basal spot on HW not reaching the row of marginal cells of the anal angle (Fig. 26) ..... 9 8(7). Dark basal spot on HW reaching the penultimate row of cells of the anal angle (Fig. 26); body black; in lateral view, cornua of vesica spermalis exposed ( Fig. 20 ); vesica spermalis without bilobed hook, instead there are two lobes separated and perpendicular to vesica spermalis longitudinal axis ( Fig. 22 and 24 ) ............................................. Erythemis credula (Hagen) — Dark basal spot on HW reaching the row of marginal cells of the anal angle (Fig. 26); body brilliant scarlet red or reddish-brown; in lateral view, cornua of vesica spermalis not exposed ( Fig. 19 ); vesica spermalis with bilobed hook ( Fig. 18 ) .. Erythemis carmelita Williamson 9(7). Thorax, dorsum of abdomen, and dark basal spot on HW reddish brown; posterior extension of ventral teeth on cercus about the same level as apex of epiproct or less ( Fig. 13 ), Antr/Lar ≥7.41 .................................................................... Erythemis haematogastra (Burmeister) — Thorax brown on sides and black on front, dorsum of abdomen brown and black with pale yellow crossbands in S3 and S4-7 (immature male); or thorax and dorsum of abdomen black (mature male); posterior extension of ventral teeth on cercus reaching beyond the apex of epiproct ( Fig. 12 ), Antr/Lar ≤6.21 .................................................... Erythemis plebeja (Burmeister)