Acostatrichia digitata Thomson & Holzenthal 2012

Santos, Allan Paulo Moreira, 2020, A review of the Neotropical microcaddisfly genus Acostatrichia Mosely, 1939 with description of a new species from Brazil (Trichoptera: Hydroptilidae: Leucotrichiinae), Zootaxa 4755 (2), pp. 201-230 : 216

Acostatrichia digitata Thomson & Holzenthal 2012

urn:lsid:zoobank.org:act:85981ECC-3397-4968-ACBC-B6EE2098DA5B

Fig. 16

Acostatrichia digitata Thomson & Holzenthal 2012: 21 , figs. 1A–1F, male; type locality: Venezuela: Bolívar: E Tumeremo, W Bochinche, Río Botonamo, 07°25.462’N, 61°14.318’W, 150 m.; type depository: UMSP.

Remarks. This species is known only from its holotype collected in Venezuela. The original description and illustrations are quite detailed, and they are not duplicated here (see Thomson & Holzenthal 2012). Acostatrichia digitata shows the main features of the A. brevipenis Group: the long and somewhat capitate ventromesal process on segment VII; segment VIII with ventrolateral processes; and the inferior appendages fused to each other with an apicolateral projection. The species is easily distinguished from the others by the ventrolateral processes of segment VIII each bearing a digitate lobe ( Thomson & Holzenthal 2012) and in addition, the subgenital plate is divided into two arms, in ventral view.

Distribution. Venezuela ( Fig. 16 ).

Figures

FIGURE 16. Distribution map of the Acostatrichia species in South America, based on material examined here and previously published records. When latitude and longitude were not available, an approximate location was used. Circle, species in the Acostatrichia plaumanni Group; square, species in the Acostatrichia brevipenis Group; triangle, species in the Acostatrichia cerna Group.