Egerocoris dimorphus, Minghetti & Montemayor & Dellapé, 2024
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publication ID |
https://dx.doi.org/10.3897/dez.71.104130 |
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publication LSID |
lsid:zoobank.org:pub:A0C8103C-B56C-40E9-9C38-1D2617F8A3C4 |
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persistent identifier |
https://treatment.plazi.org/id/B4381DE7-5D26-4F18-A037-F2B845E097F5 |
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taxon LSID |
lsid:zoobank.org:act:B4381DE7-5D26-4F18-A037-F2B845E097F5 |
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treatment provided by |
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scientific name |
Egerocoris dimorphus |
| status |
sp. nov. |
Egerocoris dimorphus sp. nov.
Figs 1B View Figure 1 , 2B View Figure 2 , 3B View Figure 3 , 4 View Figure 4 , 5A, B View Figure 5 , 6A, B View Figure 6 , 7A, B View Figure 7 , 8A, B View Figure 8 , 9A, B View Figure 9 , 10A View Figure 10
Diagnosis.
Antennal segment I bicolored, darker distally (Figs 1B View Figure 1 , 3B View Figure 3 ), segment III whitish; femora yellow and irregularly tinged with orange; level of vertex not attaining dorsal margin of eyes; labium extending to metacoxae and segment I slightly concave ventrally; calli large, not attaining pronotal lateral margins; embolium longer than abdomen; internal margin of cell straight; sexual dimorphism on internal margin and length of cuneus (Fig. 4A, B View Figure 4 ), which is concave in males and reaches posterior margin of membrane without contacting each other with hemelytra in repose; cell 3 times as long as wide; genital capsule with a dorsal sclerotized tooth in right side (Figs 5B View Figure 5 , 6A View Figure 6 ); left process of subgenital plate smaller than the right, sclerotized and asymmetrically forked (Fig. 7A, B View Figure 7 ); left paramere larger than right paramere.
Description.
Macropterous male. Coloration. Head yellow; labium yellow; eyes black. Antennal segment I yellow, darker distally; II dark brown; III pale yellow; IV pale yellow. Thorax: collar, pronotum, scutellum and pleural area yellow. Hemelytron yellow, irregularly tinged with orange; membrane yellowish; veins yellow. Legs yellow, femora and tibiae tinged with orange, tarsi darker distally, claws brown. Abdomen yellow.
Surface. Antennal segment I with recumbent setae and a few erect setae (Fig. 3B View Figure 3 ); segment II with semierect setae. Pleura and abdomen with longer, more dispersed setae than dorsum. Coxae, trochanters, femora and tarsi with semierect setae; tibiae with abundant, short, recumbent setae.
Structure. Head: level of vertex not attaining dorsal margin of eyes (Fig. 2B View Figure 2 ). Maxillary plates large. Labium extending to metacoxae and slightly concave ventrally. Antennal segment II more than 2.5 times as long as antennal segment I. Thorax: posterior pronotal margin 2 times as wide as pronotum length. Calli large not attaining lateral pronotal margins. Pronotal width across calli half as wide as posterior margin width. Hemelytron: embolium straight, bent upwards from its anterior end to less than a half its length. Claval commissure longer than scutellum length and half of pronotal length together. Cuneus extending to posterior membrane margin, apex not contacting each other with hemelytra in repose (Fig. 4 View Figure 4 ), internal margin concave. Male genitalia: Genital capsule more than one third abdomen length. Dorsal wall on right apex with one sclerotized tooth, tapering towards apex; left apex blunt and sclerotized. Left process of subgenital plate directed dorsally as a sclerotized wall, dorsally expanded, and divided into two short branches, the internal blunt and the external pointed and extended outside the genital capsule (Figs 5A, B View Figure 5 , 6A View Figure 6 , 7A, B View Figure 7 ). Right process of subgenital plate longer than left process, tapering towards apex, curved (Fig. 7A, B View Figure 7 ), with a basal, internal expansion. Left paramere (Fig. 8A, B View Figure 8 ) larger than the right paramere, with a sclerotized and pointed dorsal projection; apical process with tiny teeth on dorsal margin, dorsally expanded at apex. Right paramere (Fig. 9A, B View Figure 9 ) with body wider than basal and apical processes, curved; apical process blunt, with a sclerotized, pointed tooth. Aedeagus (Fig. 10A View Figure 10 ) phallotheca tapering towards apex; endosoma membranous.
Measurements (n: 2): Body length to apex of membrane 4.42, (4.66); body length to apex of cuneus 4.42, (4.66); body width 2.23, (2.43). Head: width 1.19, (1.31); interocular distance 0.53, (0.56), 1.20 (1.27) times as wide as head length. Labium: segment I length 0.43, (0.52); II, 0.52, (0.60); III, 0.20; IV, 0.20. Antenna: segment I length 0.48, (0.56); II, 1.36, (1.49); III, 0.78, (0.85); IV, 0.84, (absent). Pronotum: length 0.74, (0.82); anterior width (0.86), 0.88; posterior width 1.49, (1.58). Scutellum: length 0.53, (0.60); width 0.77. Cuneus: length 1.58, (1.70); anterior width 0.90, (0.95). Cell 3.00 times as long as wide.
Macropterous female. Similar to male in size, coloration, surface, and structure. Lateral margins of hemelytra parallel; cuneus less developed, without extending to posterior membrane margin, 1.5 times as long as anterior margin width, and internal margin concave with apex truncate; posterior veins margin straight. Body length to apex of membrane 4.94; body length to apex of cuneus 4.51; body width 2.02. Head: width 1.23; interocular distance 0.58. Labium: segment I length 0.46; II, 0.62; III, 0.19; IV, 0.2. Antenna: segment I length 0.52; II, 1.36; III, 0.74; IV, 0.79. Pronotum: length 0.82; anterior width 0.89; posterior width 1.66. Scutellum: length not measured; width 0.76. Cuneus: length 1.28; anterior width 0.84.
Geographic distribution.
Ecuador (Fig. 11 View Figure 11 ).
Etymology.
The specific epithet is from the Greek di (two), and morphe (form), referring to the sexual dimorphism in cuneal development.
Type material.
Holotype ♂: Ecuador: Prov. Napo [Orellana] / vic. Puerto Misahuali, / 1650-1900 ft, 6-19-IX- / 1998, J. E. Eger, coll. // 1°2'4.2"S, 77°39'49.2"W / Mercury vapor & / Ultraviolet lights (USNM). Paratypes: ♂, Ecuador: Napo [Orellana] Res. Ethnica / Waorani, 1 km S. Onkone Gare / Camp, Trans. Ent. 21 June 1994 / 220m 00°39'10"S, 076°26'00"W / T. L. Erwin, et al. // Insecticidal fogging of mostly bare / green leaves, some with covering / of lichenous or bryophytic plants in / terre firme forest At 8 x-trans, / 94 m mark Project MAXUS Lot 708 (MLP); ♀, Ecuador: Napo [Orellana], Tiputini / Biodiversity Station, 216 m, / 00°37'55"S, 76°08'39"W, / 9 February 1999 / T.L Erwin et al., collectors // Insecticidal fogging of mostly / bare green leaves, some with / covering of lichenous or / bryophytic plants; / Lot #2002, Transect #T-1 (USNM).
Remarks.
This species is sexually dimorphic in the shape and length of cuneus (Fig. 4 View Figure 4 ), and in this respect it is similar to species of Proneella , which have the lateral margins of the hemelytra slightly convex and the cuneus narrower relative to its length. Also, in species of Proneella the eyes are sessile, the level of vertex attains the dorsal margin of the eyes, the antennal segment I is straight, the antennal segment II is widest in the central or distal area, the calli are small, and the posterior margin of the cell is straight.
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