Smicridea (Rhyacophylax) vermiculata Flint, 1978

Sganga, Julieta V., Sganga, Daniela E. & Iglesias, Monica S., 2022, Review and redescription of species in the brasiliana group of Smicridea (Rhyacophylax) (Trichoptera, Hydropsychidae, Smicrideinae): exploration of the utility of geometric morphometrics as a method for delimitation and characterization of species in the genus, ZooKeys 1111, pp. 389-412 : 389

publication ID

https://dx.doi.org/10.3897/zookeys.1111.80961

publication LSID

lsid:zoobank.org:pub:B90A7CF7-3E83-4006-AEAD-7932A9F4F28B

persistent identifier

https://treatment.plazi.org/id/ECFD3EFF-411B-5424-B34A-6E43F2019DF2

treatment provided by

ZooKeys by Pensoft

scientific name

Smicridea (Rhyacophylax) vermiculata Flint, 1978
status

 

Smicridea (Rhyacophylax) vermiculata Flint, 1978

Figs 1C View Figure 1 , 5A-D View Figure 5

Smicridea (Rhyacophylax) vermiculata Flint, 1978: 381. Marinoni and de Almeida 2000: 286 [distribution; biology]. Blahnik et al. 2004: 4 [distribution]. Paprocki et al. 2004: 9 [checklist]. Sganga 2006: 142 [distribution]. Calor 2011: 321 [checklist]. Paprocki and França 2014: 36 [checklist]. Holzenthal and Calor 2017: 186 [catalog].

Material examined.

Argentina • 27 males; Misiones, Oberá, Centro de Investigación y Refugio de Selva Antonia Ramos , A ° Ramos ; 17 Nov. 2013; JV Sganga col.; light trap .

Description.

Adult male. General coloration of the body brown. Length of forewings 4.5 mm (n = 22), coloration similar to that of the body, with a distinct transverse, white band subapically.

Head (Fig. 1C View Figure 1 ). In dorsal view rectangular, transverse. Internal margins of the eyes, in dorsal view, convergent, postgenal areas triangular. Interocular area trapezoidal. Interocular distance 1.85 × shorter than MHW. Coronal suture 1.47 × shorter than IOD. Maximum eye width 4.35 × shorter than MHW. Anterolateral setose warts present, oval, bifid posteriorly, with mesal lobe shorter than the lateral. Posterior setose warts subtriangular, with a digitate mesal lobe. Maxillary palp formula: I-II-IV-III-V.

Male genitalia. Anterolateral margin of segment IX rounded, produced. Tergum of segment X triangular in lateral view, dorsal margin straight, ventral slightly rounded, with a subapical lobe, and a sclerotized Y-shaped area directed anteriorly through segment IX (Fig. 5A View Figure 5 ); in dorsal view divided mesally into two triangular hemitergites, with apex rounded and bearing a lateral lobe, mesal margins straight, with an anterior notch (Fig. 5B View Figure 5 ). Inferior appendages with two articules, basal article slightly widened distally, apical one curved mesad in dorsal view, apex pointed (Fig. 5A, B View Figure 5 ). Phallus long, with a tubular phallobase; basal portion broad, forming an angle of ~ 90° with distal part, which is very long and with apex slightly upturned (Fig. 4A View Figure 4 ); phallus bears subapically four spines mesoventrally on each side, which are directed posteriorly (Fig. 5A, C, D View Figure 5 ). Internal sclerotized section of ejaculatory duct long (~ 1/2 the phallobase length) and bent ventrad anteriorly in lateral view, distal end curved upwards and with a posterior concavity (Fig. 5A, C View Figure 5 ); in dorsal view longitudinally divided in two (Fig. 5D View Figure 5 ). Endotheca simple.

Systematic considerations.

This species seems to be related to S. (R.) dentifera Flint, 1983 and S. (R.) unguiculata . The three species have simple ejaculatory ducts and lateroventral spines at the apex of the phallus. The features that allow the differentiation of S. vermiculata are the position of the spines of the phallus (it has 4 mesoventral spines on each side directed posteriorly), the ejaculatory duct that is curved upwards and bears a posterior concavity, and the presence of the apicolateral lobe on tergum X.

Distribution.

Argentina, Brazil, Paraguay.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Trichoptera

Family

Hydropsychidae

Genus

Smicridea

Loc

Smicridea (Rhyacophylax) vermiculata Flint, 1978

Sganga, Julieta V., Sganga, Daniela E. & Iglesias, Monica S. 2022
2022
Loc

Smicridea (Rhyacophylax) vermiculata

Flint 1978
1978