Heteragrion muryense, Costa & Santos, 2000

LENCIONI, F. A. A., 2013, <p> <strong> Diagnoses and discussion of the group 1 and 2 Brazilian species of <em> Heteragrion </ em>, with descriptions of four new species (Odonata: Megapodagrionidae) </ strong> </ p>, Zootaxa 3685 (1), pp. 1-80 : 12

Heteragrion muryense Costa & T. Santos, 2000

Figs. 20 (♂ app), 21 (♂ app), 36A–C (♂ thx), 45A–C (♀ thx), 48A–B (♀ S8–10, basal plate), 53A–B (♂, ♀ habitus), 68 (map)

Heteragrion muryense Costa & T. Santos 2000: 1–4, Figs. 1–8 (description of male and female, key, illustration of male prothorax, male and female thorax in lateral and dorsal view, male appendages mediodorsal and medioventral views, female S9–10 dorsal view, statement of the similarity between it and H. flavovittatum ). Lencioni 2005: 136, Figs. 85A–H (data on description and distribution, illustration from Costa & T. Santos 2000); Machado & Bedê 2006: 50–52 (differences from H. tiradentense , H. petiense , H. flavovittatum and H. ovatum ); Garrison et al 2010: 88 (list).

Types. Holotype and allotype in MNRJ (not examined) .

Additional material examined. 3♂ 1♀. Brazil: Rio de Janeiro State: Nova Friburgo, Mury, Pico do São João , 1500 m, 24/ 26-I-1996 , 3♂ 1♀, leg. Mielke.

Illustration made from following specimens. 1♂ (Fig. 20A, 20B, 21, 36A, 36B, 36C, 53A)— Brazil: Rio de Janeiro State: Nova Friburgo, Mury, Pico do São João , 1500 m, 24/ 26-I-1996, leg. Mielke. ( NC 4524 ) ; 1♀ (Fig. 45A, 45B, 45C, 48A, 48B, 53B)— Brazil: Rio de Janeiro State: Nova Friburgo, Mury, Pico do São João , 1500 m, 24/ 26-I-1996, leg. Mielke. ( ABMM) .

Distribution. Brazil (Rio de Janeiro State).

Diagnosis. Male: Unique by presence of unique sub-basal spine (Figs. 20 and 21). Cercus in lateral view: dorsobasal expansion present. Ventrobasal expansion present and curved inward forming long sub-basal spine. Remainder almost straight (Fig. 20B). Cercus in mediodorsal view: apical, basal and medial portions subequal. Ventral expansion present. Ventral branch of medial process shaped as a narrow rectangular, slightly curved plate, with sclerotized ridge dividing it in the middle. Dorsal branch of medial process very small and triangular, attached at mid length of sclerotized ridge (Fig. 20A). Female: Posterior lobe of prothorax roughly triangular with small notch in middle, detached from medial lobe and covered with long hairs, pale brown with large ovoid black spot in middle and small black spot at each tip (Fig. 45C); valves of ovipositor not reaching distal S10, ventral margin with barely visible spines ( Fig. 48A ); cercus longer than S10, without bristles at tip ( Fig. 48A ); Basal plate: dorsal edge an inverted S-shape, longer than convex outer edge. Ventral side 1/2 length of outer edge ( Fig. 48B ).

Figures

FIGURE 48. Female: Heteragrion muryense (A) S8–S10, (B) basal plate; Heteragrion tiradentense (allotype) (C) S8–S10, (D) basal plate; Heteragrion flavovittatum (E) S8–S10, (F) basal plate; Heteragrion ictericum (G) S8–S10, (H) basal plate.

FIGURE 1–6. Appendage structure (1,2,3,5 lateral view, 4 distal apical view, 6 mediodorsal view): (A) basal portion of cercus,

FIGURE 7–10. Appendage structure (7 lateral view, 8 mediodorsal view, 9–10 ventral view): (D) ridge, (E) medial process, (J) external wall, (K) ventral surface of cercus, (L) medial wall, (N) ventrobasal expansion, (Q) ventrobasal apophysis.