Montina calarca Mejía-Soto & Forero, 2022

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 : 334-337

Montina calarca Mejía-Soto & Forero , sp. nov.

( Figs 5 ; 6 ; 24B ; 26B ; 28B ; 40 )

Type locality. Colombia, Risaralda, Santuario de Flora y Fauna Otún Quimbaya, estación La Suiza.

Type material. HOLOTYPE: COLOMBIA: RISARALDA: ♂, [ Santuario de Flora y Fauna Otún Quimbaya , estación] La Suiza; [04.7269°N, 75.5772°W]; 1900 m; Ago 1992; MPUJ _ ENT0058608 / (red label) HOLOTYPE Montina calarca A. Mejía-Soto & D. Forero , sp. nov. ( MPUJ) . PARATYPES: COLOMBIA: QUINDÍO: 1 ♂, Salento ; 1895 m; 14 Jul 1939; L. Richter leg.; CTNI No. 2543 ( CTNI) ; 1 ♂, Filandia, Estación Bremen C.R.Q. [Reserva Natural Forestal y de Investigación Bremen-La Popa]; 1800–1900 m; 20 Abr 1992; V. Cruz et al. leg.; MPUJ _ENT0058606 ( MPUJ); 1♀, same data; 14–20Abr 1998; J. Infante et al. leg.; MPUJ _ENT0058605 ( MPUJ). RISARALDA: 1 ♂, [Santuario de Flora y Fauna Otún Quimbaya, estación] La Suiza; [04.7269°N, 75.5772°W]; 1900 m; 18 Ago 1992; MPUJ _ENT0058611 ( MPUJ); 1 ♀, same data; 20 Sep 1992; Gómez leg.; MPUJ _ENT0058617 ( MPUJ), 1 ♀, same data; 18 Sep 1992; MPUJ _ENT0058616 ( MPUJ), 1 ♀, same data; Ago 1992, MPUJ _ENT0058615 ( MPUJ); 1 ♀, same data; 21 Ago 1992; MPUJ _ENT0058614 ( MPUJ); 1 ♀, same data; 1995 m; Ago 1992; MPUJ _ENT0058613 ( MPUJ); 1 ♀, same data; 1900 m; 20 Ago 1992; MPUJ _ENT0058610 ( MPUJ); 1 ♀, same data; 1995 m; 18 Ago 1992; MPUJ _ENT0058609 ( MPUJ); 1 ♀, same data; 1900 m; 22 Ago 1992; MPUJ _ENT0058604 ( MPUJ); 1 ♀, same data; 1992 m; Ago 1992; GUI GER leg.; MPUJ _ENT0058603 ( MPUJ); 1 ♀, Pereira, Parque Regional Natural Ucumarí; 19 Ago 1992; Matuk & Ochoa leg.; MPUJ _ENT0058607 ( MPUJ).

Diagnosis. Total length, females 23.8–24.9 mm (n = 2), males 17.9–18.3 (n = 4). General coloration reddish, with head, scutellum, and legs from dark brown to black ( Figs 5B, D ), membrane translucent yellow with basal area of M, Cu, and An1 veins darkened, cells hyaline; tubercle of anterior pronotal lobe reduced, conical and apically acute ( Figs 5E, F ); pronotum densely setose; elevation of the carina of the posterior pronotal lobe slightly prominent, triangular shaped, posterior margin slightly rounded ( Figs 5E, F ); connexivum black with a red narrow band on its margin, not so visible or absent on segments 2–3 ( Figs 5A–C ), segments 4–6 markedly lobed and rounded, without an acute process on each segment ( Figs 5A, C ); male genitalia with endosomal lateral lobes (ll) reduced ( Fig. 6D ); arms of articulatory apparatus (apt) thin and lumen very narrow apically ( Fig. 6F ).

Description. Male. Total length 17.9–18.3 mm, head length 3.3–3.5 mm, anterior pronotal lobe length 1.1–1.2 mm, posterior pronotal lobe length 2.8–2.9 mm, abdomen width 5.6–6.3 mm (n = 4). COLORATION. Head dark brown to black; area around ocelli reddish black, between ocelli a yellow spot; scape and pedicel black, flagellomeres light red; labium black, last segment light brown. Thorax: Anterior pronotal lobe reddish orange; posterior pronotal lobe on disc, elevation of carina, and posterolateral process bright red, surrounding discal area and posterior margin yellow; scutellum dark brown; pro-, meso- and metasternum dark brown. Legs: Coxa dark brown, femur from dark brown to black, tibia reddish brown, tarsi dark brown. Hemelytron: Corium red, basally dark, central area dark red; clavus dark red, basally darker; membrane translucent yellow with basal area of M, Cu, and An1 veins darkened, cells hyaline. Abdomen: Sternites brown with broad dark brown band on posterior margin of segments 2–6; connexival segments black with margin light red; pygophore yellow or orange. VESTITURE. Body densely setose. Head: Numerous golden and decumbent medium size setae, and sparse, long, erect, dark setae. Thorax: Pronotum densely set with medium and long sized golden setae, with some glabrous areas on submedial carinas of posterior lobe; scutellum apically with a few black, erect setae; profemur and tibia ventrally with dense medium sized setae. Abdomen: Sternites and ventral laterotergites with numerous decumbent golden setae and few erect ones, dark spots on lateral area of sternites with black erect setae near posterior margin, sometimes not visible. STRUCTURE. Head: Eyes globular, prominent in dorsal view, about half the width of postocular area, ovoid in lateral view with posterior margin nearly straight; first visible labial segment shorter than second. Thorax: Tubercles of anterolateral angles obtuse, triangular-shaped; discal tubercles of anterior pronotal lobe reduced, conical, apically acute; elevation of the carina of the posterior pronotal lobe slightly prominent, triangular shaped, posterior margin slightly rounded; pronotal posterolateral angles obtuse; scutellum with narrow apex, projected and slightly rounded. Hemelytron: Membrane surpassing apex of abdomen. Abdomen: Margin of connexival segments 2–3 straight, 3 with sharp posterior projection, segments 4–6 deeply lobed with rounded margin, segment 7 straight. Genitalia: Pygophore ovoid in lateral view, subquadrangular in dorsal view ( Figs 5A–C ); medial process (mpp) slightly widened at base, narrowing apically, apical third of constant width, in lateral view straight, directed at about 45 degrees ( Figs 6B, C ); paramere slightly curved, body of constant diameter, distal portion enlarged and rounded, preapically dorsally with small low tubercle, beset with long dense setae apically ( Figs 6B, C ); articulatory apparatus (apt) with basal plate arms narrower than basal plate bridge, very narrow lumen at union of these ( Fig. 6F ); dorsal phallothecal sclerite (dps) strongly emarginate preapically, lateral margin on basal half reaching about middle of phallosoma height ( Fig. 6F ); endosoma with distal ventral lobe (dvl) deltoid-shaped, elongated; distal dorsal lobe (ddl) as a narrow, sclerotized area; distal lateral lobes (dll) not differentiated ( Figs 6D, E ); lateral lobes (ll) reduced ( Fig. 6D ).

Female. Similar to male but larger, except in the following: larger, total length 24.7–24.9 mm, head length 4.2–4.3 mm, anterior pronotal lobe length 1.7–1.8 mm, posterior pronotal lobe length 3.4–3.5 mm, abdomen width 7.2–7.6 mm (n = 2). COLORATION. Usually darker, particularly the pronotal posterolateral process. STRUCTURE. Head: First two visible labial segments of equal length. Thorax: Discal tubercles of anterior pronotal lobe slightly larger; elevation of carina of posterior pronotal lobe slightly more prominent; posterolateral process blunt. Genitalia: Gonocoxa 8 subquadrangular, anterior margin (am) slightly concave; gonoplac (gpl) apically slightly projected beyond joining area, obtuse, with medium-sized setae ( Fig. 17B ); bursa copulatrix subquadrangular, lateral protruding lobes (lbs) very wide in all its length ( Fig. 26B ); U-shaped structure of dorsal area of bursa slightly sclerotized ( Fig. 28B ).

Variation. Montina calarca sp. nov. does not exhibit much intraspecific variation and the only noticeably variation is in the body setation, in which specimens from Filandia (Quindío) are slightly more setose than specimens from La Suiza (Risaralda).

Differential diagnosis. Montina calarca sp. nov. resembles M. gladiator sp. nov., M. nigripes , and M. scutellaris due to the markedly lobed margin of the connexival segments and its overall reddish coloration. It can easily be distinguish from these species by having smaller and apically acute discal tubercles of the anterior lobe of the pronotum ( Figs 5E–F ), and by the completely round connexival margin on segments 4, 5, and 6 without any protuberance on each segment ( Figs 5A, C ); whereas in the other species the tubercles of the anterior pronotal lobe are larger and more obtuse apically ( Figs 13E, F ; 19E–F ), and the connexival margin has a subangular protuberance towards the posterior half on some segments ( Figs 13C ; 19A, C ). Of those species, M. nigripes has not been found in Colombia, as it was described from “ Bahia ” in Brazil ( STÂL 1859). In addition, the coloration of M. nigripes is darker, not bright red as M. calarca sp. nov. and the connexival margin seems to be pale yellow ( Fig. 35 ), not red as in M. calarca sp. nov. ( Fig. 5 ). Furthermore, the connexival segments are deeply lobed in M. calarca sp. nov., whereas in M. nigripes they are not as lobed ( Fig. 35A ). Montina calarca sp. nov. can also be differentiated from M. gladiator sp. nov., because in the latter the head, thorax, and hemelytron are red ( Figs 13B, D, G ), in contrast to the black head in M. calarca sp. nov. ( Fig. 5G ). Furthermore, M. calarca sp. nov. have male genitalic characters that allow the identification of the species, such as the reduction of the lateral lobes of the endosome (ll) ( Fig. 6D ), and the narrow arms of the basal plate of the articulatory apparatus (apt) which are narrower than the basal plate bridge ( Fig. 6F ).

Etymology. The name of the new species is after the Cacique Calarcá or Karlaca, who lived between the 16 th and 17 th centuries. He was part of the Pijao people, whose territories covered part of the central mountain range in Colombia, including the department of Quindío, where he died and where much of the examined material come from. The name is treated as a noun in apposition.

Distribution. Only known from Quindío and Risaralda in Colombia, in altitudes ranging between 1800–1900 m ( Fig. 40 ). The known distribution of this species is restricted to a few localities, very close to each other, in an area of less than 200 km 2 in the Colombian central Cordillera.

Montina calarca sp. nov. exhibit a restricted distribution in Colombia, similar to M. tikuna sp. nov., which is known from a single locality (see below). Having restricted distributions is very unusual in Reduviidae and only a few species are known from restricted geographic ranges (e.g., CASTRO- HUERTAS & FORERO 2017). It is also unusual for species in Montina to have an altitudinal distribution restricted to middle elevations (1800–1900 m), as in the case of M. calarca sp. nov., because species in this genus are found either at low elevations ( M. fumosa , M. ruficornis , M. tikuna sp. nov., M. testacea , M. gladiator sp. nov.) or have a wide altitudinal range ( M. confusa , M. lobata , M. distincta , M. scutellaris ).

Figures

Fig. 5. Montina calarca Mejía-Soto & Forero sp. nov. A – male holotype, lateral view; B – male holotype, dorsal view; C – female paratype, lateral view; D – female paratype, dorsal view; E – pronotum, female paratype, lateral left view; F – pronotum, male paratype, lateral left view; G – head, male paratype, dorsal view. Scale bar: 1 mm.

Fig. 6. Montina calarca Mejía-Soto & Forero sp. nov., paratype, 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. 40. Distribution map of Montina calarca Mejía-Soto & Forero sp. nov., M. confusa (Stål, 1859), and M. distincta (Stål, 1859) in Colombia.

Fig. 17. Montina ruficornis (Fabricius, 1803). A – male, lateral view. B – male, dorsal view. C – female, lateral view. D – female, dorsal view. E – pronotum, female, lateral left view. F – pronotum, male, lateral left view. Scale bar: 1 mm.

Fig. 13. Montina gladiator Mejía-Soto & Forero sp. nov. A – male holotype, lateral view; B – male holotype, dorsal view; C – female paratype, lateral view; D – female paratype, dorsal view; E – pronotum, female paratype, lateral left view; F – pronotum, male paratype, lateral left view; G, head, male paratype, dorsal view. Scale bar: 1 mm.

Fig. 19. Montina scutellaris Stål, 1859. A – male, lateral view. B – female, dorsal view. C – female, lateral view. D – male, dorsal view. E – pronotum, female, lateral left view. F – pronotum, male, lateral left view. Scale bar: 1 mm.

Fig. 35. Female holotype of Montina nigripes Stål, 1859, deposited at ZMHB. A – lateral left view; B – dorsal view; C – labels. Scale bar: 10 mm.