Mesoleptobasis cyanolineata ( 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: Co, Zootaxa 2145, pp. 47-68: 56-59

publication ID 10.5281/zenodo.188653

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scientific name

Mesoleptobasis cyanolineata ( Wasscher 1998 )

comb. nov.

Mesoleptobasis cyanolineata ( Wasscher 1998)  comb. nov.

Figs. 3View FIGURE 3 c, d, 4 c, 5 d, 7 c, 8 a, 11 a, 13 a, 14 c, 15 c, 16 c, 17 c, 18 c, 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. 11View FIGURE 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. 11View FIGURE 11 a), two to six cells in female ( Fig. 13View FIGURE 13). Genital ligula in ectal view with distal margin deeply bifid and lacking lateral emarginations ( Fig. 14View FIGURE 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 S 10 recessed and with medio-dorsal emargination, lacking postero-lateral processes ( Fig. 17View FIGURE 17 c; shared with M. acuminata  ). Male cercus strongly arched, curled over itself with tip directed antero-ventrally ( Figs. 17View FIGURE 17 c, 18 c; unique); male paraproct about as high as half of S 10 height at base in lateral view ( Fig. 18 c; shared with M. acuminata  ); base of paraproct lacking a thumb-like tubercle ( Figs. 17View FIGURE 17 c, 18 c; shared with M. acuminata  and M. incus  ). Ovipositor only slightly surpassing tip of cerci, for a distance shorter than cerci length ( Fig. 16View FIGURE 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. 3View FIGURE 3 c, 4 c, 8 a) 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. 9View FIGURE 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. 21View FIGURE 21).


National Museum of Natural History, Naturalis














Mesoleptobasis cyanolineata ( Wasscher 1998 )

Garrison, Rosser W. & Ellenrieder, Natalia Von 2009

Metaleptobasis cyanolineata

Heckman 2008: 395
Tsuda 2000: 39
Wasscher 1998: 487


Williamson 1915: 604