Mesoleptobasis cyanolineata ( Wasscher 1998 ) Wasscher, 1998

Garrison, Rosser W. & Ellenrieder, Natalia Von, 2009, Redefinition of Mesoleptobasis Sjöstedt 1918 with the inclusion of Metaleptobasis cyanolineata (Wasscher 1998) comb. nov. and description of a new species, Mesoleptobasis elongata (Odonata: Coenagrionidae), Zootaxa 2145, pp. 47-68 : 56-59

Mesoleptobasis cyanolineata ( Wasscher 1998) comb. nov.

Figs. 3 c, d, 4c, 5d, 7c, 8a, 11a, 13a, 14c, 15c, 16c, 17c, 18c, 21

Metaleptobasis (?), sp. — Williamson 1915: 604 –607 (partial description and illustrations of Ƥ from Rockstone, Guyana).

Metaleptobasis cyanolineata Wasscher 1998: 487 –490 (description of 3 and Ƥ); — Tsuda 2000: 39 (catalog); — Heckman 2008: 395 (key and reproduction of illustrations from original description).

Types. Holotype (from Mungotapoe, Marowijne District, Surinam) in RMNH (not examined). Specimens examined. Total: 1 3, 1 Ƥ. Surinam, Marowijne District: 1 paratype 3, 1 paratype Ƥ, Mungotapoe (5°35'N, 54°15'W), 20 ix 1948, leg. D.C. Geijskes (RWG).

Diagnosis. Male prothorax with medial bifurcate process with arms directed latero-posteriorly forming a v-shaped line between them ( Fig. 4 c; unique); female prothorax with similar processes ( Fig. 5 d; unique). Costal side of FW pt longer than basal side, its posterior margin slightly convex in both sexes ( Fig. 11 a; shared with M. cantralli , M. elongata , and M. incus ). CuA relatively long (shared with M. acuminata ), extending four to six cells distal to vein descending from subnodus in male ( Fig. 11 a), two to six cells in female ( Fig. 13 ). Genital ligula in ectal view with distal margin deeply bifid and lacking lateral emarginations ( Fig. 14 c; shared with M. cantralli , M. elongata , and M. incus ); in lateral view with a small triangular lateral lobe bearing a series of denticles along its dorsal margin ( Fig. 15 c; unique), and with an inconspicuous low latero-basal lobe (shared with M. acuminata ). Posterior margin of male S10 recessed and with medio-dorsal emargination, lacking postero-lateral processes ( Fig. 17 c; shared with M. acuminata ). Male cercus strongly arched, curled over itself with tip directed antero-ventrally ( Figs. 17 c, 18c; unique); male paraproct about as high as half of S10 height at base in lateral view ( Fig. 18 c; shared with M. acuminata ); base of paraproct lacking a thumb-like tubercle ( Figs. 17 c, 18c; shared with M. acuminata and M. incus ). Ovipositor only slightly surpassing tip of cerci, for a distance shorter than cerci length ( Fig. 16 c; shared with M. acuminata and M. incus ).

Dimensions. Males (n 1): Hw 19.5; abdomen 35.0; total length 38.0. Females (n 1): Hw 19.5; abdomen 30.5; total length 36.

Remarks. Wasscher (1998) did not justify placement of M. cyanolineata in Metaleptobasis . He noted it differed from all Metaleptobasis species by the presence of pale blue pterothoracic stripes ( Fig. 8 a), and named the species according to that feature. The presence in M. cyanolineata of well developed male prothoracic processes ( Figs. 3 c, 4c, 8a) and of pale stripes in pterothorax is shared with all known species of Mesoleptobasis , as is its rounded frons (as in Fig. 1 a) and presence of affixed sclerotized processes in genital ligula ( Fig. 15 c), none of which is found within Metaleptobasis . All Metaleptobasis species have a pair of well developed horns on the anterior portion of the male mesepisterna and a dark metallic-green mid-dorsal stripe on the pterothorax ( Fig. 9 b), absent in M. cyanolineata and in all known Mesoleptobasis . For these reasons we transfer M. cyanolineata from Metaleptobasis to Mesoleptobasis .

Distribution. Guyana and Saramacca and Marowijne Districts in Surinam ( Fig. 21 ).

Figures

FIGURE 3. Pronotum, lateral view. (a) Mesoleptobasis acuminata, male Peru, Explorama Lodge; (b) M. cantralli, male paratype, Brazil, Porto Velho; (c) M. cyanolineata, male paratype, Surinam, Mungatapoe; (d) M. cyanolineata, female paratype, Surinam, Mungatapoe; (e) M. elongata, holotype; (f) M. incus, lectotype, Brazil, Rio Autaz.

FIGURE 9. Metapretarsus, lateral view. (a) Mesoleptobasis acuminata, male Peru, Explorama Lodge; (b) Metaleptobasis bicornis, female holotype, Amazonas.

FIGURE 11. Male wings. (a) Mesoleptobasis cyanolineata, paratype, Surinam, Mungatapoe; (b) M. elongata, paratype, Brazil, Rio Curari; (c) M. incus, lectotype, Brazil, Rio Autaz.

FIGURE 13. Female wings. (a) Mesoleptobasis cyanolineata, paratype, Surinam, Mungatapoe; (b) M. elongata, allotype; (c) M. incus, paralectotype, Brazil, Rio Autaz.

FIGURE 14. Genital ligula, ectal view. (a) Mesoleptobasis acuminata, Peru, Explorama Lodge; (b) M. cantralli, paratype, Brazil, Porto Velho; (c) M. cyanolineata, paratype, Surinam, Mungatapoe; (d) M. elongata, holotype; (e) M. incus, lectotype, Brazil, Rio Autaz.

FIGURE 16. Female S 8 – 10, lateral view. (a) Mesoleptobasis acuminata, Peru, Explorama Lodge; (b) M. cantralli, paratype, Brazil, Porto Velho; (c) M. cyanolineata, paratype, Surinam, Mungatapoe; (d) M. elongata, holotype; (e) M. incus, paralectotype, Brazil, Rio Autaz.

FIGURE 17. Male S 10, medio-dorsal view. (a) Mesoleptobasis acuminata, Peru, Explorama Lodge; (b) M. cantralli, paratype, Brazil, Porto Velho; (c) M. cyanolineata, paratype, Surinam, Mungatapoe; (d) M. elongata, holotype; (e) M. incus, lectotype, Brazil, Rio Autaz.

FIGURE 21. Distribution of Mesoleptobasis.