Acostatrichia tuskera Oláh & Flint 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 : 217-219

publication ID

https://doi.org/ 10.11646/zootaxa.4755.2.1

publication LSID

lsid:zoobank.org:pub:urn:lsid:zoobank.org:pub:CAD4295B-2456-48EE-98F6-723FDEF5C0EB

DOI

https://doi.org/10.5281/zenodo.3812823

persistent identifier

https://treatment.plazi.org/id/D40B8780-CA55-FFF1-D7F1-FA30FD99FC90

treatment provided by

Carolina

scientific name

Acostatrichia tuskera Oláh & Flint 2012
status

 

Acostatrichia tuskera Oláh & Flint 2012

Figs. 10 View FIGURE 10 , 16 View FIGURE 16

Acostatrichia tuskera Oláh & Flint 2012: 157 , figs. 38–40, male; type locality: Brazil: São Paulo State, Piracicaba; type depository: NMNH (not found).

Redescription. Length from front of head to tips of folded forewings 3 mm (n = 3). General color, in alcohol, dark brown. Head unmodified. Ocelli 3. Antennae each 20-articulated; scape cylindrical, as long as wide, inner margin not produced; pedicel cylindrical; flagellomeres cylindrical, unmodified. Forewings each with costal vein bearing short basal bulla. Abdominal segment VII bearing very long ventromesal process, with capitate apex ( Figs. 10A, 10C View FIGURE 10 ). Segment VIII shorter dorsally than ventrally ( Fig. 10C View FIGURE 10 ); in ventral view, posterior margin of sternum truncate ( Fig. 10A View FIGURE 10 ); with pair of ventrolateral processes with acute apices ( Figs. 10A, 10C View FIGURE 10 ); tergum with transverse row of long setae ( Fig. 10B View FIGURE 10 ). Segment IX mostly within segment VIII, ventrally open; without dorsolateral processes ( Figs. 10B, 10C View FIGURE 10 ). Preanal processes globose and bearing very long setae ( Figs. 10B, 10C View FIGURE 10 ). Inferior appendages fused with each other as plate with shallow U-shaped incision on posterior margin in ventral view ( Fig. 10A View FIGURE 10 ); each with very long digitate lateral process rising from apex and bearing 3–4 subapical spine-like projections at midlength ( Fig. 10A View FIGURE 10 ); in lateral view, upturned ( Fig. 10C View FIGURE 10 ). Subgenital plate, in ventral view, broad, rounded and with small median triangular projection at apex ( Fig. 10A View FIGURE 10 ); in lateral view, slightly downturned ( Fig. 10C View FIGURE 10 ). Tergum X membranous, bilobed, both lobes rounded in dorsal view ( Fig. 10B View FIGURE 10 ). Phallus tubular basally, bearing midlength complex, with dorsal window and basal loop shorter than basal portion of phallus ( Fig. 10D View FIGURE 10 ); apical portion without conspicuous sclerites and with several internal spines ( Figs. 10D, 10E View FIGURE 10 ).

Material examined. PARATYPES: Brazil, Sao Paulo, Piracicaba , 12.III.1965, C.A. Triplehorn leg., 3 males ( NMNH).

Remarks. As mentioned before, within the A. brevipenis Group, Acostatrichia brevipenis and A. tuskera appear to be closely related to each other, sharing similarities in the general aspect of male genitalia. Both species have the ventrolateral processes of segment VIII short and acute ( Figs. 7C View FIGURE 7 , 10C View FIGURE 10 ), whereas for the other species in the group those processes are much longer and not acute. Acostatrichia tuskera can be distinguished from A. brevipenis and other Acostatrichia species by the long apicolateral processes of the inferior appendages, which are curved inwards, in ventral view ( Fig. 10A View FIGURE 10 ), and have 3 or 4 spines at midlength ( Figs. 10A, 10C View FIGURE 10 ).

Distribution. Brazil ( Fig. 16 View FIGURE 16 ).

NMNH

USA, Washington D.C., National Museum of Natural History, [formerly, United States National Museum]

NMNH

Smithsonian Institution, National Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Trichoptera

Family

Hydroptilidae

Genus

Acostatrichia

Loc

Acostatrichia tuskera Oláh & Flint 2012

Santos, Allan Paulo Moreira 2020
2020
Loc

Acostatrichia tuskera Oláh & Flint 2012: 157

Olah, J. & Flint, O. S. Jr. 2012: 157
2012