Montina sinuosa ( Lepeletier & Serville, 1825 )

Mejía-Soto, Andrés, Forero, Dimitri & Wolff, Marta, 2022, Taxonomic revision of Montina (Hemiptera: Heteroptera: Reduviidae) from Colombia with description of three new species, Acta Entomologica Musei Nationalis Pragae 62 (2), pp. 325-381 : 363-378

Montina sinuosa ( Lepeletier & Serville, 1825)

( Fig. 38 )

Reduvius sinuosus Lepeletier & Serville, 1825: 277 (new species).

Montina sinuosa: AMYOT & SERVILLE (1843) : 363 (new generic placement).

Montina (Montina) sinuosa: STÂL (1872) : 73 (checklist, new generic placement, Montina as subgenus).

Montina sinuosa: LETHIERRY & SEVERIN (1896) : 195 (catalog); MALDONADO (1990): 235 (catalog).

Type locality. Brazil.

Type material. LECTOTYPE (here designated): [ BRAZIL]: 1 ♂ [pygophore missing]; “ Bahia ” Coll. Signoret / “ sinuosa ” det. Signoret / (red label) Typus? etik. Hecher 1996 / Lectotype Reduvius sinuosus Lepeletier & Serville, 1825 Desig. by A. Mejía-Soto & D. Forero ( NHMW). PARALECTOTYPE. BRAZIL: 1♂ [pygophore missing]; “Brasil” Coll.Signoret / “ Bahia ” ( NHMW).

Diagnosis. General coloration completely dark with no contrasting areas ( Figs 38A–B, D–E ); margin of connexivum markedly lobed ( Fig. 38B ), and body very setose.

Differential diagnosis. Montina sinuosa is similar to M. lobata due to their overall dark coloration and markedly lobed connexivum, however, M. sinuosa is completely dark, without any contrasting spots or bands in the connexivum or the pronotum ( Fig. 38 ), whereas in M. lobata each connexival segment has a posterior pale band contrasting with the dark segment ( Figs 15A, C ). We only had images of male specimens of M. sinuosa , but GIL- SANTANA (2019) provided images of a female specimen, which agree with the lectotype and paralectotype in its overall dark coloration without pale or contrasting areas on the pronotum or connexivum. The only colored area in the female is the terminalia on the abdomen, which is bright yellow, therefore, we hypothesize that the male pygophore could be bright yellow as well.

Distribution. Known from Brazil ( LEPELETIER & SERVILLE 1825, MALDONADO 1990) and Ecuador (GIL- SANTANA 2019).

Remark on types. Heteroptera specimens of Lepeletier are in principle in the Serville collection (D. Pluot-Sigwalt, pers. comm.), and the Heteroptera portion of the Serville collection was deposited in Vienna ( Austria) via V. Signoret ( HORN & KAHLE 1935). SEHNAL (2000) indicated that at the NHMW there are two specimens of Reduvius sinuosus of indeterminate sex that can be considered syntypes. We agree that those two specimens deposited in NHMW bearing labels of “Coll. Signoret” are syntypes of Reduvius sinuosus . Not only they do agree about being part of the Serville collection and deposited in Vienna, but also both specimens lack the genitalia ( SEHNAL 2000) a fact indicated by LEPELETIER & SERVILLE (1825). We interpret those specimens as being males, because in lateral view the shape of abdominal segment 7 is clearly of males, indicating a missing pygophore. Before the international metric system was adopted, the French line was a common measurement used ( STEARN 1985). LEPELETIER & SERVILLE (1825) gave the length of the specimens being 12 to 14 lines (“lignes”). If two specimens were examined by them, this would fit the two specimens at NHMW. Therefore, we have selected the specimen with an identification label of “ sinuousus ” as the lectotype.

Figures

Fig. 38. Reduvius sinuosus Lepeletier & Serville, 1825 [now Montina sinuosa (Lepeletier & Serville, 1825)], deposited at NHMW. A – male lectotype, dorsal view; B – male lectotype, lateral view; C – male lectotype, labels; D – male paralectotype, dorsal view; E – male paralectotype, lateral view of thorax. Images taken without scale.

Fig. 15. Montina lobata Stål, 1859. A – male, lateral view. B – male, dorsal view. C – female, lateral view. D – female, dorsal view. E – pronotum, male, lateral left view. Scale bar: 1 mm. Scale bar: 1 mm.