Smicridea colombosaucia, Mey & Ospina-Torres, 2018

Mey, Wolfram & Ospina-Torres, Rodulfo, 2018, Contribution to the Trichoptera fauna of the river La Vieja, Bogotá, Colombia (Insecta: Trichoptera), Zootaxa 4504 (1), pp. 23-40 : 32-33

Smicridea colombosaucia spec. nov.

( Figs 9 A–9D, 15C)

Holotype ♂, Colombia, Bogotá, Chapinero, Quebrada La Vieja , 18.ii.2017, hand net, leg. W. Mey ( ICN).

Paratypes: 3♂, same locality, 18.ii.2017, hand net, leg. W. Mey ( ICN, MfN) .

Etymology. The specific name refers to the similarity of the new species to the Peruvian S. saucia McLachlan 1871 .

Description. Male ( Fig. 15C ): Length of each forewing 6 mm, wingspan 13.5 mm. Head dark brown; antennae and palpi brown; legs light brown; forewings fuscous, each with indistinct gold-brown fascia in apical third, hindwings with long curved R2+3. Anterolateral process of sternum V as long as sternum; with two pairs of internal sacs with reticulated membrane.

Male genitalia ( Figs 9 A–9D): Segment IX in lateral view with anterior margin convex, dorsal side broadly rounded and with granulate surface, in dorsal view longitudinal keel broadly triangular with rounded posterior margin. Tergum X in dorsal view membranous dorsomedially, lateral processes rounded distally and divided by strong ridge; in lateral view ventrolateral margin strongly sclerotized. Inferior appendages each two-segmented, in lateral view each with basal segment longer than apical segment, tubular and thick, in ventral view tubular and curved mesad, apical segment sickle-shaped. Phallic apparatus long and tubular, in lateral view broad and strongly curved basally, dorsal endothecal lobes subtriangular, with sclerotized tips, ventral endothecal lobes subquadrate, with sclerotized distal margins and apicoventral lobe projecting ventrad in everted state.

Diagnosis. Smicridea colombosaucia spec. nov. belongs to the S. fasciatella Group within the subgenus Smicridea . The new species seems to be closely related to S. saucia and S. breviuncata Flint 1974b , based on the architecture of tergum X with the rounded distal margin and the subtriangular, dorsal processes of the endotheca. The dividing ridge of tergum X, the broad dorsal process of segment IX, and the sickle-shaped harpago separate the new species from S. saucia and related species.

Male specimens collected in alcohol usually have the processes of the endotheca inverted within the phallic tube. The phallic apparatus is often depicted in this position. But with these structures fully everted, the apex of the phallic apparatus appears to be rather different in shape. In the Figs 9 A–9B, the inverted and everted stages of the phallic apparatus are depicted to demonstrate these differences. Flint & Reyes (1991: 481–482) reported some variation in the tip of the phallic apparatus of S. saucia , but this was probably due to a partially everted endotheca.

Figures

FIGURES 15A–15F. Trichoptera spp., photos of adults, dorsal view. 15A, Atopsyche viejae spec. nov., male paratype; 15B, Atopsyche flavoantennata spec. nov., female paratype; 15C, Smicridea colombosaucia spec. nov., male paratype; 15D, Polycentropus joergenseni Ulmer 1909, male; 15E, Phylloicus monserratensis spec. nov., male paratype; 15F, Marilia bogotaensis spec. nov., male paratype.

FIGURES 7–9. Trichoptera spp., male genitalia. 7A–7C, Polycentropus joergenseni Ulmer 1909, scale = 0.5 mm: 7A, left lateral; 7B, ventral; 7C, dorsal.. 8A–8C, Xiphocentron laviejae spec. nov., scale = 0.3 mm: 8A, left lateral, with phallic apparatus in situ; 8B, ventral; 8C dorsal. 9A–9D, Smicridea colombosaucia spec. nov., scale = 0.25 mm: 9A,left lateral, with phallic apparatus in situ; 9B, phallic apparatus, left lateral with everted endotheca; 9C, dorsal; 9D, ventral.