Limnocoris panamensis La Rivers, 1971

Rodrigues, Higor D. D. & Sites, Robert W., 2019, Revision of Limnocoris (Heteroptera: Nepomorpha: Naucoridae) of North America, Zootaxa 4629 (4), pp. 451-497 : 479-482

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Limnocoris panamensis La Rivers


Limnocoris panamensis La Rivers

( Figs. 2F View FIGURE 2 , 13 View FIGURE 13 , 14 View FIGURE 14 E–F, 20A)

Limnocoris panamensis La Rivers, 1970: 6–8 (original description).

Limnocoris panamensis: La Rivers 1971: 76 (catalog); Nieser & López-Ruf 2001: 319 (catalog); Herrera 2013: 227 (catalog).

Diagnosis. The pubescent area of the propleuron is not extended posteriorly on the lateral margin (as in Fig. 1D View FIGURE 1 ). The fossa of the mesosternal carina is distinctly deep and elliptical to ovate ( Fig. 13C View FIGURE 13 ). The metasternal carina is depressed medially, and acuminate posteriorly ( Fig. 13C View FIGURE 13 ). The lateral margin of the female subgenital plate has a tuft of elongate golden setae at mid-length, and the posterior margin is evenly rounded ( Fig. 13D View FIGURE 13 ).

Measurements (n = 3 males / 3 females). Body length 8.20–8.23/ 8.60–8.74, body width 5.65–5.80/ 5.86–6.00, synthlipsis 1.49–1.52/ 1.50–1.51, head length 1.21–1.40/ 1.40, head width 2.75–2.80/ 2.80–2.82, pronotum length on midline 1.50/ 1.50–1.60, pronotum width 5.37–3.40/ 5.65–5.68, scutellum length 1.20–1.40/ 1.40, scutellum width 2.51–2.70/ 2.61–2.80, hemelytra length 5.90–6.12/ 6.20–6.40.

Supplemental description. Maxillary plate tumescent anteriorly. Distolateral margins of labrum tapering to broadly rounded point. Antenna not exceeding lateral margin of eye; pedicel quadrate; flagellomeres slender, not partially fused, with long setae. Posterior margin of propleuron convex at mid-length ( Fig. 13C View FIGURE 13 ); posteromesal corner near prosternellum flat. Region between mesobasisternum and mesoepisternum with longitudinal row of elongate golden setae (partially visible in Fig. 13C View FIGURE 13 ). Lateral margin of abdomen with minute serration; posterolateral corners of II–VI narrowly rounded to right angled, not spinose; sterna with elongate golden setae generally dispersed, concentrated at midline of segments III–V; sternum II with sinuous row of golden setae. Male: mediotergite VI with accessory genitalic process poorly developed; posterior margin of mediotergite VII convex medially, with small rounded lobe on each side; laterotergite VII with lateral and mesal margins subparallel, and posterior margin narrowly rounded ( Fig. 14E View FIGURE 14 ). Lateral lobe of tergum VIII with lateral margin almost straight in anterior half; left medial lobe slightly angled laterally at apex, distal margin rounded; right medial lobe twisted in distal third ( Fig. 14F View FIGURE 14 ). Female: subgenital plate with posterior margin broadly convex; laterosternite VII with posterior margin shal- lowly angled to rounded apex ( Fig. 13D View FIGURE 13 ).

Comparative notes. This species has a characteristic mesosternal carina with a distinctly deep fossa. Five other species of Limnocoris share a deep fossa of the mesosternal carina: L. angulatus Nieser, González & Eichelkraut , L. bouvieri Montandon , L. calii Nieser, González & Eichelkraut , L. pectoralis Montandon , and L. virescens . Of these, only L. virescens occurs in North America. In L. bouvieri and L. virescens the posterolateral corners of abdominal segments III–V are spinose, whereas in L. panamensis , L. angulatus , L. calii , and L. pectoralis these corners are slightly acuminate to rounded, without forming spines. Limnocoris calii and L. pectoralis differ from L. panamensis and L. angulatus by the pubescent area of the propleuron extended posteriorly, which does not occur in the last two species. Limnocoris panamensis can be differentiated from L. angulatus by having the posterolateral corner of the pronotum rounded in brachypterous specimens, male abdominal tergum VIII with the right medial lobe twisted in the distal half, and the female subgenital plate with the posterior margin broadly rounded; whereas in L. angulatus the posterolateral corner of pronotum is acute, male abdominal tergum VIII with the right medial lobe weakly twisted, and the female subgenital plate tapering posteriorly and the posterior margin truncate medially.

Distribution. This species is distributed from northern Costa Rica (Guanacaste) to the central region of Panamá (Veraguas) ( Fig. 20A View FIGURE 20 ). Label data suggest that L. panamensis occurs in regions with elevations above 1,000 meters above sea level.

Published records. Costa Rica: Chiriquí ( La Rivers 1970).

Type material examined. All specimens brachypterous. HOLOTYPE ♀, PANAMA, [Chiriquí], Poterillos [=Potrerillos], 27.III.1935, J. MacSwain Collector, Type No. 13422 ( CAS). PARATYPES: same data as holotype (1♂, 1♀, CAS).

Additional material examined. COSTA RICA, Alajuela, Rio Cataratas, on road from San Ramon to Fortuna , 25 Nov. 2002, W.D. Shepard, WDS-A-1498 (1♂ brachypterous, UMC) . Cartago, Pejibaye, 23.March.1987, among rocks and leaf packs in sunlit rapids of Rio Pejibaye , W.E. Steiner, J.M. Hill & S.E. Frye collectors (1♀ macropterous, USNM) ; Tapanti NP, 5.1 Km abv gate, 22.VI.2003, 4.980 ft, unnamed stream, William D. Shepard leg (1♂ brachypterous, EMEC) . Guanacaste, El Santo de Angel , CL-1271, 26.XII.1969, J.T. Polhemus (3♂, 3♀, all brachypterous, USNM) ; Rincon de la Vieja NP, Quebrada Catarata , 14 June 2001, W.D. Shepard, WDS-A-1387 (1♂ macropterous, UMC) . Heredia, Arroyo La Paz Chiquita , 11.V.1995, W. Baumann & R.M. Houseman (7♀ bra- chypterous, 1♀ macropterous, BYUC) . Puntarenas, Monteverde area, 1.400 –1.700 meters, 06.June–14.June.1973, Erwin & Hevel, Central Expedition , 1973 (1♀ brachypterous, USNM) GoogleMaps ; Alturas Biol. Station , 20.VI.2003, 4.360 ft, Rio Bella Vista, William D. Shepard leg (1♂ brachypterous, 2♀ brachypterous, 3♀ macropterous, EMEC) ; Que- brada Móquina, Estac. Biol. Monteverde , 10°18.55’N / 84°48.16’W, 24.I.2000, C.B. Barr (1♂, 3♀, all brachypter- ous, EMEC) GoogleMaps ; Rio Bella Vista, Las Alturas Biological Station N of Alturas, 20.VI.2003, 12°27.45’N / 75°35.57’W, 4.360 ft elevation, C.B. Barr coll (2♂, 2♀, all brachypterous, 1♂, 2♀, all macropterous, EMEC) GoogleMaps . PANAMA, Chiriquí, same data as holotype (3♂, 6♀, USNM; 3♂, 5♀, EMEC—all brachypterous) GoogleMaps ; Rio Candela, Jurutungo , January 1993, CL2806, coll. J.T. Polhemus (4♂, 4♀, USNM; 1♂, UMC; 1♀, MZUSP—all brachypterous) ; Volcán , 01.March.1924, Fred J. Foster (1♂ brachypterous, 2♀ brachypterous, 1♀ macropterous, USNM) . Veraguas, stream near Santa Fe , 15.I.1993, CL-2832, J.T. Polhemus col (2♂, 2♀, USNM; 1♂, 1♀, UMC—all brachypterous) .


California Academy of Sciences


Smithsonian Institution, National Museum of Natural History


Essig Museum of Entomology














Limnocoris panamensis La Rivers

Rodrigues, Higor D. D. & Sites, Robert W. 2019

Limnocoris panamensis: La Rivers 1971: 76

Herrera, F. 2013: 227
Nieser, N. & Lopez-Ruf, M. 2001: 319
La Rivers, I. 1971: 76