Belostoma triangulum Lauck

Stefanello, Fabiano, Ribeiro, José Ricardo Inacio & Estévez, Ana Lia, 2021, Revision of the Belostoma triangulum group (Insecta: Heteroptera: Belostomatidae), Zootaxa 4958 (1), pp. 95-102: 99-100

publication ID

https://doi.org/10.11646/zootaxa.4958.1.8

publication LSID

lsid:zoobank.org:pub:D9A893E4-4685-44EF-9250-43E3A48A12E1

DOI

http://doi.org/10.5281/zenodo.4693191

persistent identifier

http://treatment.plazi.org/id/941887C4-BF07-FFF8-FF0C-A0FEEB8CFF7B

treatment provided by

Plazi

scientific name

Belostoma triangulum Lauck
status

 

Belostoma triangulum Lauck  

( Figure 2D View FIGURE 2 )

Belostoma triangulum Lauck, 1964: 105–107   .

Size and shape. Length: male (n=4) = 19.5–23.0 mm, female (n=4) = 19.5–22.5 mm; width: male = 10.0–12.0 mm, female = 10.5–11.5 mm. Body broad.

External morphology. Head: clypeogenal cleft longer than clypeoloral cleft; anteoculus as long as interoculus; eyes globose, longer than wide; interocular space 1.7 to 1.9 times the width of an eye ( Fig. 1D View FIGURE 1 ); vertex without mesal carina; article II of labium as long as III. Thorax: prosternal keel triangular, prominent, not projecting forward ( Fig. 1A View FIGURE 1 ); pronotum quadrate, without carina; the mesal portion of metaxiphus elevated anteriorly and swollen posteriorly, and distal portion concave; membrane of hemelytra reduced, as wide as the maximum width of clavus ( Fig. 2D View FIGURE 2 ). Abdomen. pilosity covering about half of connexivum, constricted between spiracles; pilosity not developed on segment VII segment and not covering sternites.

Male genitalia. Dorsal arms of phallosoma as long as phallobase, width at the base and apex subequal, welldeveloped, meeting at tip of the diverticulum, covering lateral margins of the diverticulum; diverticulum without ventroapical protuberance in lateral and ventral views ( Figs. 3D–F View FIGURE 3 ).

Diagnosis. The prominent triangular prosternal keel is diagnostic for this species ( Fig. 1A View FIGURE 1 ).

Type material examined. Holotype (♂), allotype (♀) pinned ( SEMC), PERU, Huánuco Department [Pasco Region], Leon Pampa locality, 14.XII.1937, F. Woytkowski coll., designated by D. R. Lauck, 1961   ; Paratype (♂) pinned ( USNM), PERU, Huánuco Department [Region], [Leoncio Prado Province, José Crespo y Castillo District] Aucayacu , designated by D. R. Lauck, 1961   ; Paratypes (2 ♂ and 3 ♀) pinned ( SEMC), PERU, Huánuco department, [Leoncio Prado Province] Shapajilla jungle?, 29.VII.1938, F. Woytkowski coll., designated by D. R. Lauck, 1961   .

Distribution. This species is known only from the type series from Huánuco, Peru, and from a male and a female from Cáceres, Mato Grosso, Brazil (specimens not examined, deposited in the collection of Dr. Arnold S. Menke, University of California, Davis ( Fig. 4 View FIGURE 4 ).

SEMC

University of Kansas - Biodiversity Institute

USNM

Smithsonian Institution, National Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hemiptera

Family

Belostomatidae

Genus

Belostoma

Loc

Belostoma triangulum Lauck

Stefanello, Fabiano, Ribeiro, José Ricardo Inacio & Estévez, Ana Lia 2021
2021
Loc

Belostoma triangulum

Lauck, D. R. 1964: 107
1964