Pseudosinopla canaliculus ( Reed, 1898 )

Rider, David A., 2017, Rediscovery of Pseudosinopla canaliculus (Reed, 1898) (Hemiptera: Heteroptera: Acanthosomatidae) with comments on its tribal classification and biogeography of South American Blaudusini, Zootaxa 4317 (1), pp. 185-190 : 186

Pseudosinopla canaliculus ( Reed, 1898)

( Figs. 1–5 )

Material examined: CHILE: Araucania Region: Termas de Rio Blanco, 23-II-1979, 1100 m a.s.l., Valdivian forest , on Nothofagus sp. A. C. Ashworth & J. W. Hoganson legs, 1 ♀ . Los Rios Region: Lago Pirihueico , 4/ 5-III- 2016, on Nothofagus sp. A. Lüer leg, 1♀ .

Additonal morphological data: This species was redescribed in Faúndez (2014), however the internal genitalia was not examined because of the existence of a single type specimen. Now, with two more females available, part of the internal female genitalia is described below:

Spermatheca ( Fig. 2 .). Spermathecal bulb ovate in shape, wider than longer, with a swollen appearance. Proximal flange of the pump about one third the size of the bulb, the pump region is divided in two morphologically distinctive sections. Distal section cone shaped with the apex immersed into the spermathecal bulb. Proximal section about one half shorter than the first one, transversally flattened, hourglass shaped, more sclerotized than the rest of the structures. Spermathecal duct tubular, elongated, significantly thinner than the rest of the structures.

The examined specimens possess a more entire, well-developed abdominal spine, reaching to the anterior margins of the mesocoxae ( Figs. 1, 4 ). In addition, they have a non-continous pro-, meso-, and metasternal carina ( Fig. 4 in part).

Host plant. Nothofagus sp. ( Nothofagaceae ). The environment is characterized by Valdivian forest, with large extensions of Nothofagus spp. Additionally, the area is surrounded by several rivers and lakes. Distribution ( Fig. 5 ). Until now, P. canaliculus was only known from Valdivia, the type locality; the new records provided herein extends the distribution of P. canaliculus towards the Andes in a straight line with Valdivia, and northwards to the Araucania Region in Rio Blanco. It is noteworthy to mention that at the time of Reed’s (1898) paper, Valdivia was used as a general location in the south; so, it is possible that the type may not have come exactly from Valdivia but it may actually come from another locality nearer to those reported in this paper (e.g., Pirihueico).

Figures

FIGURE 5. Distribution of Pseudosinopla canaliculus (Reed, 1898), square = type locality, circles = new records.

FIGURES 1 – 4. Pseudosinopla canaliculus (Reed, 1898). 1, ventral view; 2, spematheca; 3, head in ventral view, detail of first rostral segment. 4. Detail of thoracic sterna, MC = mesosternal carina, AS = abdominal spine.