Montina fumosa ( Stål, 1867 )

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 : 344-345

Montina fumosa ( Stål, 1867)

( Figs 11 ; 12 ; 24A ; 26A ; 28A ; 33 ; 41 )

Aristippus fumosus Stål, 1867: 300 (new species).

Montina (Aristippus) fumosa: STÂL (1872) : 74 (checklist, new generic placement, Aristippus as subgenus).

Ploeogaster fumosus: WALKER (1873) : 94 (catalog).

Montina fumosa: LETHIERRY & SEVERIN (1896) : 195 (catalog); MALDONADO (1990): 234 (catalog).

Type locality. Brazil, Amazon (?).

Type material. HOLOTYPE: [ BRAZIL – Unknown state]: 1♀, “Amazon” / (red label) 383 “82” / “ fumosus Stål ” / (red label) Typus / NHRS-GULI 000000608 ( NHRS).

Other specimens examined. COLOMBIA: AMAZONAS: 1 ♂, S. Encanto; 4°12′N, 69°56′W; 14 Ago 1991; F. Ramoz leg.; UNAB No. 4862 ( UNAB); 1 ♀, Leticia, comunidad indígena Monifue Amena, Km 9,8 vía Leticia-Tarapacá; [04.1416°S 69.9232°W]; 80 m; 3 May 2002; Mora et al. leg.; MPUJ _ENT0058581 ( MPUJ); 1 ♀, same data; 70 m; Mar 2004; Salamanca leg.; MPUJ _ENT0010528 ( MPUJ); 1 ♀, same data; 60 m; 12 Oct 2002; Varela et al. leg.; MPUJ _ENT0058524 ( MPUJ); 1 ♂, same data; 26 Ago 2003; [colecta] manual; MPUJ _ENT0058499 ( MPUJ); 1 ♀, same data; 31 Mar 2005; Farias; et al. leg.; [colecta] manual; MPUJ _ENT0058460 ( MPUJ); 1 ♂, Leticia, Km 7 vía Tarapacá; 120 m; Nov 1996; Sistemática Animal UNAL exped.; ICN 036202 ( ICN); 1 ♀, Leticia, Km 2 vía Tarapacá, sendero quebrada Tacana; 2°53′28.705″S, 69°44′27.862″W; 9 Nov 2001; E. Flórez leg.; ICN 036198 ( ICN); 1 ♀, Leticia; Km 2 vía Tarapacá; 110 m; 27 Oct 2002; Sistemática Animal UNAL exped.; ICN 037559 ( ICN); 1 ♀, same data; 100 m; 25 Abr 2002; ICN 037556 ( ICN); 1 ♀, same data; 120 m; 29 Oct 2002; Sistemática Animal UNAL exped.; ICN 037552 ( ICN); 1 ♀, Leticia, Km 25 vía Tarapacá; 27 Ago 1997; F. Fernández, leg.; bosque inundable; ICN 036199 ( ICN); 1 ♂, Leticia, PNN [Parque Nacional Natural] Amacayacu; 5 Sep 1997; F. Fernández leg.; Tierra Firme, jama [insect net]; ICN 037549 ( ICN: 1 male). GUAINÍA: 1 ♀, Puerto Inírida, Com. La Ceiba [resguardo indígena La Ceiba, 28.6km SSE de Inírida]; 3°37′58.7″N; 67°53′22.1″W; 103 m; 21–25 Mar 1998; G.Amat,A. Gabanzo, C. Martinez leg.; bosque; ICN 029910 ( ICN). GUAVIARE: 1 ♀, San José of Guaviare, vereda Playa Güio, sendero Las Iracos; 2°34′40.7″N, 72°42′24.5″W; 27 Oct 2012; C. Suarez leg.; jama [insect net]; ICN ( ICN); 1 ♂, San José of Guaviare; Vereda Playa Güio; 2°34′40.7″N, 72°42′24.5″W; 28 Oct 2012;Sistemática Animal UNAL exped.; [colecta] manual; ICN sin código – 112 ( ICN). META: 1 ♀, Acacias, Monte Bello; 20 Sep 2005; D. Gaitán leg. ( ICN); 1 ♂, San Martín; Reserva Rey Zamuro-Matarredonda, ~ 37km ESE de San Martin; 03.53173°N, 73.40181°W; 8–12 Abr 2019; C. Salazar, L. Sáenz leg.; bosque de galería; red entomológica; MPUJ _ENT0064804 ( MPUJ); 1 ♀, same data; S. Borda leg.; borde bosque de galería; colecta manual; MPUJ _ENT0065336 ( MPUJ); 1 ♀, same data; S. Ochoa, V. Páez, L. Rodríguez leg.; bosque de galería; colecta manual; MPUJ _ENT0065907 ( MPUJ); 1 ♀, Vista Hermosa, caño Cabra; 5 Jul 1968; C. Fowler, J. Fowler leg.; MPUJ _ENT0058511 ( MPUJ); 1 ♀, La Macarena, PNN [Parque Nacional Natural] La Macarena, rio Guayabero; 16 May 1988; A. Medina leg.; [colecta] manual; ICN 037557 ( ICN); 1 ♀, La Macarena; L. Solorzano leg.; UNAB No. 4862 ( UNAB); 1 ♂, San Juan de Arama, cerca de la estación del Inderena, cuchilla el Tablazo; 650 m; Sep 1987; ICN 029911 ( ICN). PUTUMAYO: 1 ♂, Caucayá; 4 Dic 1948; ICN 037557 ( ICN).

Diagnosis. Total length, females 24.5–25.2 mm (n = 5), males 20.3–21.0 mm (n = 3). General coloration brown ( Figs 11B, D ); membrane translucent yellow; tubercle of the anterior pronotal lobe subconic and slightly curved anteriad in males ( Fig. 11E ), slightly globose apically in females; elevation of the carina of the posterior pronotal lobe truncated dorsally ( Fig. 11E ); scutellum black, apically yellow ( Fig. 11F ); apex of corium usually bright red ( Figs 11B, D ); margin of connexivum nearly straight in females, slightly lobed in males ( Figs 11A, C ); abdominal sternites dark brown, ventral laterotergites dark brown but slightly paler than sternites and with a diffuse pattern ( Figs 11A, C ), dorsal laterotergites 6–7 pale yellow on their lateral margin; medial process of pygophore with base at least two times as wide as apex ( Figs 12A, C ); posterior margin of gonocoxa 8 strongly notched ( Fig. 24A ).

Variation. Montina fumosa is a commonly found species, but because of its intraspecific variability in size, coloration, structure of the connexivum, and even the structure of the carina of the posterior lobe of the pronotum, sometimes it might be challenging to identify. On one hand, the general coloration may be darker or redder; for instance, the holotype has the pronotum darker than most of the material examined ( Fig. 33B ). Also, specimens from the eastern plains (the Llanos), exhibit a lighter color, which makes more contrasting the dark stripe on the first segments of the laterotergites, than the specimens from the Amazon which are darker. In males, the margin of the connexivum is slightly lobed ( Fig. 11A ) and with the acute subangular structures of the posterior area in the segments 2–5 more marked than in females ( Fig. 11B ). The height of the elevation of the carina of the posterior pronotal lobe can be slightly variable. Nonetheless, other characters agree with the rest of the material, including the medial process of the pyrophore and the presence of the notch on the gonocoxa 8 and the strongly sclerotized U-shaped structure from the anterior dorsal region of the bursa copulatrix ( Fig. 28A ).

Differential diagnosis. Because of its overall brown coloration, M. fumosa is similar to M. distincta and M. tikuna sp. nov. Nonetheless, M. fumosa can be distinguished by its longer total length, the yellow apex of the scutellum ( Fig. 11F ), which is dark in both M. distincta and M. tikuna sp. nov., by the deep notch on the posterior margin of gonocoxa 8 ( Fig. 24A ), which in M. distincta and M. tikuna sp. nov. is not as deep ( Figs 24D ; 25F ), and by the strong sclerotization of the inverted U-shaped sclerite on the anterior dorsal region of the bursa copulatrix ( Fig. 28A ), which is absent in M. tikuna sp. nov. ( Fig. 29F ) and less sclerotized in M. distincta ( Fig. 28D ). It can also be confused with M. fenestrata ( Fig. 32 ), a species known from Brazil and not found so far in Colombia, because both share the overall brown coloration and the yellow apex of the scutellum. However, the elevation of the carina of the posterior pronotal lobe is very prominent in M. fumosa ( Fig. 11E ), whereas in M. fenestrata is low ( Fig. 32A ), and the forewing membrane is uniformly hyaline in M. fumosa ( Figs 11B, D ), whereas in M. fenestrata it is pale brown with a round translucent central area ( Fig. 32B ).

Distribution. Brazil, Peru ( MALDONADO 1990; STÂL 1866, 1872), and Colombia (Amazonas, Guainía, Guaviare, Meta, Putumayo), with records between 50–650 m ( Fig. 41 ).

Remark on type. STÂL (1867) described M. fumosa based apparently on a single female from “Brasilia borealis”. At the NHRS only one female specimen was identified as a type. In other collections no further specimens that might be considered syntypes were found. Therefore, we are considering this single female as the holotype of M. fumosa .

Figures

Fig. 11. Montina fumosa (Stål, 1867). A – male, lateral view; B – male, dorsal view; C – female, lateral view; D – female, dorsal view; E – pronotum, male, lateral left view; F – scutellum. Scale bar: 1 mm.

Fig. 12. Montina fumosa (Stål, 1867), male genitalia.A – pygophore, dorsal view; B – pygophore, lateral right view; C – pygophore, caudal view; D – phallus, ventral view; E – phallus, lateral right view; F – phallus, dorsal view. Scale bar: 1 mm.

Fig. 24. Montina spp., external female genitalia, ventral view. A – M. fumosa (Stål, 1867); B – M. calarca Mejía-Soto & Forero sp. nov.; C – M. confusa (Stål, 1859); D – M. distincta (Stål, 1859). Abbreviations: am – anterior margin of gonocoxa 8, dp – distal portion of syntergite 9/10, gpl – gonoplac, mm – medial margin of gonocoxa 8, pom – posterior margin of gonocoxa 8, syn – syntergite 9/10, red arrow – emargination of gonocoxa 8 in the distal portion of the posterior margin. Scale bar: 1 mm.

Fig. 26. Montina spp., bursa copulatrix, dorsal view. A – M. fumosa (Stål, 1867); B – M. calarca Mejía-Soto & Forero sp. nov.; C – M. confusa (Stål, 1859); D – M. distincta (Stål, 1859). Abbreviations: lbs – lateral lobes of bursa; pse – pseudospermathecae; sug – subrectal glands. Scale bar: 1 mm.

Fig. 28. Montina spp., detail of the anterior portion of the bursa copulatrix, dorsal view.A – M. fumosa (Stål, 1867); B – M. calarca Mejía-Soto & Forero sp. nov.; C – M. confusa (Stål, 1859); D – M. distincta (Stål, 1859). Abbreviations: mov – median oviduct, pse – pseudospermathecae, usp – U-shaped sclerotization. Scale bar: 1 mm.

Fig. 33. Female holotype of Aristippus fumosus Stål, 1867 [now Montina fumosa (Stål, 1867)], deposited at NHRS. A – lateral left view; B – dorsal view; C – labels. Scale bar: 10 mm.

Fig. 41. Distribution map of Montina fumosa (Stål, 1867), M. gladiator Mejía-Soto & Forero sp. nov., and M. lobata Stål, 1859 in Colombia.

Fig. 25. Montina spp., external female genitalia, ventral view.A – M. gladiator Mejía-Soto & Forero sp. nov.; B – M. lobata Stål, 1859; C – M. ruficornis (Fabricius, 1803); D – M. scutellaris Stål, 1859; E – M. testacea (Stål, 1859); F – M. tikuna Mejía-Soto & Forero sp. nov. Scale bar: 1 mm.

Fig. 29. Montina spp., detail of the anterior portion of the bursa copulatrix, dorsal view. A – M. gladiator Mejía-Soto & Forero sp. nov.; B – M. lobata Stål, 1859; C – M. ruficornis (Fabricius, 1803); D – M. scutellaris Stål, 1859; E – M. testacea (Stål, 1859); F – M. tikuna Mejía-Soto & Forero sp. nov. Scale bar: 1 mm.

Fig. 32. Female holotype of Aristippus fenestratus Stål, 1867 [now Montina fenestrata (Stål, 1867)], deposited at NHRS.A – lateral left view; B – dorsal view; C – labels. Scale bar: 10 mm.