Acostatrichia buborektala Oláh & Johanson 2011

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 : 213-216

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.3812805

persistent identifier

https://treatment.plazi.org/id/D40B8780-CA49-FFEC-D7F1-F9CFFD03FB9C

treatment provided by

Carolina

scientific name

Acostatrichia buborektala Oláh & Johanson 2011
status

 

Acostatrichia buborektala Oláh & Johanson 2011

Figs. 8 View FIGURE 8 , 16 View FIGURE 16

Acostatrichia buborektala Oláh & Johanson 2011: 155 , figs. 79–82, male; type locality: Peru, San Martin Prov., Rio Huallaga, at Pumarihri Huallaga Lodge, between Juan Guerra and Chazuta, 14 km (rd.) W Chazuta, 6°36.643’S, 76°12.555’W; type depository: NHRS.

Oláh & Flint (2012), reported from Brazil.

Redescription. Length from front of head to tips of folded forewings 2.3 mm (n = 1). General color, in alcohol, light brown. Head unmodified. Ocelli 3. Antenna 20-articulated; scape cylindrical, twice as long as wide, inner margin not produced; pedicel cylindrical; flagellomeres cylindrical, unmodified. Forewing with costal vein simple, unmodified. Abdominal segment VII bearing very long ventromesal process, with slightly capitate apex ( Figs. 8A, 8E View FIGURE 8 ). Segment VIII shorter dorsally than ventrally ( Fig. 8C View FIGURE 8 ); in ventral view, posterior margin of sternum truncate ( Fig. 8A View FIGURE 8 ); with a pair of long ventrolateral processes, each bearing extremely long seta on basal third and slightly enlarged at apex ( Figs. 8A, 8C View FIGURE 8 ); tergum with transverse row of long setae ( Fig. 8B View FIGURE 8 ). Segment IX mostly within segment VIII, ventrally open; without dorsolateral processes ( Figs. 8B, 8C View FIGURE 8 ). Preanal process globose and bearing very long setae ( Fig. 8B View FIGURE 8 ). Inferior appendages paired but fused with each other basally, elongate, narrowing to apex in lateral view ( Fig. 8A View FIGURE 8 ); without apical or basal processes ( Fig. 8A View FIGURE 8 ). Subgenital plate, in ventral view, broad, with truncate apex ( Fig. 8A View FIGURE 8 ); in lateral view, slightly downturned ( Fig. 8C View FIGURE 8 ). Tergum X membranous, triangular in dorsal view ( Fig. 8B View FIGURE 8 ). Phallus tubular basally, bearing midlength complex, with dorsal window and basal loop shorter than basal portion of phallus ( Fig. 8D View FIGURE 8 ); apical portion with slightly sclerotized sclerite and with no internal spines ( Figs. 8D, 8E View FIGURE 8 ).

Material examined. Brazil: Amazonas, AM 010, km. 246, 15–16 Jul 1979, J. Arias leg., Oláh det., 1 male ( NMNH).

Remarks. Oláh & Johanson (2011) described this species based only on the holotype from Peru. Oláh & Flint (2012) recorded this species from northern Brazil, indicating 8 males in NMNH, but only one specimen of A. buborektala Oláh & Johanson, 2011 was located in this collection. This non-type specimen from Brazil agrees with the original description and it was used here to provide illustrations and the description above. Due to the long and capitate ventromesal process on segment VII ( Fig. 8C View FIGURE 8 ), the presence of a pair of ventrolateral processes on segment VIII ( Figs. 8A, 8E View FIGURE 8 ), and the inferior appendages fused with each other, at least basally ( Fig. 8A View FIGURE 8 ), this species is placed in the A. brevipenis Group. However, A. buborektala is very distinctive from the others in this group and in the genus as a whole. Acostatrichia buborektala differs from other species in the A. brevipenis Group by the inferior appendages fused to each other only basally ( Fig. 8A View FIGURE 8 ), instead of completely fused as a plate. In this respect, this species is similar to those in A. cerna Group, but in A. buborektala the inferior appendages lack a rod-like lateral process, typical for the A. cerna Group. Acostatrichia buborektala can be easily distinguished from other Acostatrichia species by the long ventrolateral processes of segment VIII, each one with an extremely long seta arising from basal half of the process ( Figs. 8A, 8C View FIGURE 8 ).

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

NMNH

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

AM

Australian Museum

NMNH

Smithsonian Institution, National Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Trichoptera

Family

Hydroptilidae

Genus

Acostatrichia

Loc

Acostatrichia buborektala Oláh & Johanson 2011

Santos, Allan Paulo Moreira 2020
2020
Loc

Acostatrichia buborektala Oláh & Johanson 2011: 155

Olah, J. & Flint, O. S. Jr. 2012: 213
Olah, J. & Johanson, K. A. 2011: 155
2011