Macrostemum surinamense (Flint 1974)

França, Diogo, Paprocki, Henrique & Calor, Adolfo R., 2013, The genus Macrostemum Kolenati 1859 (Trichoptera: Hydropsychidae) in the Neotropical Region: Description of two new species, taxonomic notes, distributional records and key to males, Zootaxa 3716 (3), pp. 301-335 : 327-329

Macrostemum surinamense (Flint 1974)

Figs. 14 D–G

Macronema surinamense Flint 1974: 108 , Plate 2 [type locality: Surinam, Coppename River, Bakhuis Mountains, camp III; RNH; ♀; wings]; Flint, 1978: 389, 413, 416 [distribution, wings, ♂, Macronema near surinamense ]. Macrostemum surinamense (Flint 1974) ; Flint et al. 1999: 69 [taxonomic notes; distribution]; Paprocki et al. 2004: 8 [distribution].

The holotype of this species was not available for study and specimens were not examined. The information for this species is from Flint (1974, 1978). The male genitalia illustrations were redrawn from Flint (1978).

Synopsis. Adults. Forewing length 13 mm. Head fuscous. Scapes infuscate. Prothorax yellow. Meso- and metathorax fuscous. Forewings brownish-black, with pale golden-yellow markings.

Male genitalia. Abdominal segment IX, in lateral view, with anterior margin nearly straight; posterior margin sinuous, shallowly notched, bordered by long setae above and below notch ( Fig. 14 D); in dorsal view, with posterior margin forming medial acuminate keel with long setae bordering right and left margins ( Fig. 14 E);. Segment X, in dorsal view, bilobed, each lobe apically rounded with subapical wart; pair of clusters of small setae at midlength ( Fig. 14 E); in lateral view, subtriangular and rounded apically, with subdorsal cluster of small setae near midlength, subapical wart and cluster of small setae ventrolaterally on each side ( Fig. 14 D). Inferior appendages each with basal segment about same length as apical segment, slightly thicker at 3/2rds length; apical segment slightly clavate ( Fig. 14 D). Phallus arched; apex acuminate in lateral view ( Fig. 14 F); rounded apically in ventral view ( Fig. 14 G).

Material examined. None. The male holotype was not available for study. The misinterpretation of Brazilian biodiversity protection laws by scientific curators poses obstacles to borrowing biological material from other countries.

Distribution. Brazil (AM), and Surinam.

Figures

FIGURE 14. Macrostemum spp., male genitalia. A – C, Macrostemum subaequale (Banks 1920): A, left lateral view; B, apex of phallus, ventral view; C, apex of phallus, left lateral view. D – G, Macrostemum surinamense (Flint 1974), male genitalia: D, left lateral view; E, terga IX and X, dorsal view; F, phallus, left lateral view; G, apex of phallus, ventral view.