Erythemis Hagen 1861
Creators: name: Rodríguez, Fredy Palacino
name: Sarmiento, Carlos E.
name: González-Soriano, Enrique
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Odonata
Libellulidae
Erythemis

description: 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)
description: Published as part of Rodríguez, Fredy Palacino, Sarmiento, Carlos E. & González-Soriano, Enrique, 2015, Morphological variability and evaluation of taxonomic characters in the genus Erythemis Hagen, 1861 (Odonata: Libellulidae: Sympetrinae), pp. 1-68 in Insecta Mundi 2015 (428) on page 7, DOI: 10.5281/zenodo.5353155