Amazopothea guilberti, Gil-Santana & Oliveira & Bérenger, 2020

Gil-Santana, Helcio R., Oliveira, Jader & Berenger, Jean-Michel, 2020, A new genus and a new species of Ectrichodiinae from French Guiana and an updated key to the genera of the New World (Hemiptera, Reduviidae), ZooKeys 968, pp. 85-109 : 85

Amazopothea guilberti sp. nov. Figures 1-4 , 5-9 , 10-15 , 16-23 , 24-31 , 32-36 , 37-40 , 41-46 , 47-52

Type material.

French Guiana, Holotype, male, Patawa, Montagne de Kaw, 20.xi.2001, piège malaise, J. Cerda leg. (MNHN); Allotype female, Nouragues, 20.iv.2010, piège vitre, SEAG leg. (MNHN); Paratypes: 14 males, Nouragues, 30.xi.2009, piège vitre, SEAG leg. (4/ MNHN; 10/J-MB); 2 males, Montagnes des chevaux, 12.xi.2011, piège vitre, SEAG leg. (1/ MNHN; 1/J-MB); 1 male, pk 37, Mt de Kaw, 16.XI.2001, malaise, J. Cerda leg. (J-MB); 1 male, Nouragues, 11.xii.2009, piège vitre, SEAG leg. (J-MB); 1 male, Montagne des chevaux, 20.xii.2008, piège vitre, SEAG leg. (J-MB); 1 male, Nouragues, Parare, 9.iv.2010, piège vitre, SEAG leg. (J-MB); 2 males, Saül, 22.iii.2011, piège vitre, SEAG leg. (1/ MNHN; 1/J-MB); 2 males, Nouragues, Parare, 13.viii./2010, piège vitre, SEAG leg. (J-MB); 3 males, Trésor, 29.xi.2010, piège vitre, SEAG leg. (J-MB); 1 female, Saül, 13.viii.2010, piège vitre, SEAG leg. (J-MB); 1 female, Nouragues, 20.iv.2010, piège vitre, SEAG leg. (MNHN); 1 female, RN2, pk 65, 10.viii.2008, piège vitre, SEAG leg. (J-MB); Bélizon, vii.2001, H. Gaspard leg., 2 males (MNRJ), 1 male, 1 female (CTJMSB).

Description.

Male. Figures 1 - 36 . Measurements are given in Table 1 .

Coloration: general coloration pale to pale yellowish with darkened to brownish or blackish portions or markings (Figs 1 , 2 ). Head, including neck mostly pale dorsally and darkened or blackish ventrally and laterally behind eyes (Figs 1 , 2 ); ocellar tubercle, median portion in the space between eyes and apices of antennifers dark (Fig. 1 ); ventrally, on the area between eyes and base of labium with small or more extensive pale markings, which, in the latter case can cover all the area; antennal segments mostly brownish; last three distiflagellomeres yellowish (Figs 1 , 2 ); labium mostly pale (Fig. 2 ), with faintly or ill-defined darkened portions such as the basal portion of the first visible segment, lateral portions of the second visible segment and distal segment. Thorax: pronotum mostly pale yellowish; anterolateral angles blackish; median fovea and midlongitudinal furrow on hind lobe and the area beside it, in variable extension, darkened, brownish to pale brownish (Fig. 1 ), in some specimens the midportion above the median fovea, on approximately distal half of fore lobe, has the same set of coloration; scutellum darkened, its median portion, including its depression, pale (Fig. 1 ); its prongs sometimes paler at their apices too. Pleurae and thoracic sterna mostly blackish (Fig. 2 ); pro, meso and metapleura with a median yellowish spot, above supracoxal lobes, variable in size and presence among specimens; stridulitrum paler; in some specimens, basal portion of meso and metasternum pale. Legs generally pale to yellowish pale with the following darkened portions or markings (Figs 1 , 2 ): fore and middle coxae partially or completely darkened; fore and middle femora with an ill-defined median or submedian incomplete brownish annulus and apex faintly darkened; these markings can be variable or absent; hind femur with a somewhat large submedian distal brownish to brownish black annulus and apex faintly marked or not marked; tibiae with a subbasal brownish annuli, larger on hind tibiae; faintly darkened subapically or with approximately the apical third or apical quarter darkened; tarsi yellowish. Hemelytra mostly brownish; yellowish on the base of the dorsal surface, laterally, and on the lateral portion, basally; a pale spot on the basal angle of the second discal cell of membrane, sometimes the basal portions of the veins of this cell are also pale (Fig. 1 ). Abdomen, in dorsal view: tergites (examined in few specimens) pale brownish with some faintly darkened portions, such as intersegmental bridge between the first and the second segment, except its lateral portions, a transverse thin subapical stripe on tergite VI and a median subbasal small spot on the last tergite; connexivum clearly alternating from distal dark to basal pale whitish areas, each approximately occupying half of the respective segment (Fig. 1 ); in ventral view (Fig. 2 ): sternites mostly pale yellowish; sternite II blackish, except at lateral portions; a pair of lateral undulating black bands, which run from sternite III, contiguous with blackish coloration of the previous sternite to distal portion of sternite VI or basal portion of sternite VII, where the bands become thinner; a specimen with two pairs of transverse brownish parallel thin brownish stripes at the median portion of sternite V; sternites V and/or VII sometimes with small dark spots lateral to midline, variable in size and shape; a somewhat large median subrectangular blackish large spot on sternite VI, which in some specimens is smaller, incomplete, spotted with pale coloration at its center or divided forming a pair of submedian spots, or joining the lateral band by the darkened posterior portion of the segment. The markings on the ventral connexival segments are generally the same as those of dorsal portions, but more variable, faintly marked or partially or completely absent in some segments. Exposed portion of pygophore and parameres blackish (Fig. 2 ); parameres darkened, their apices paler. Structure: mostly as in generic description (Figs 1 - 8 , 10 - 23 ); minimum distance between eyes in dorsal view (synthlipsis) somewhat less than twice longer than the width of each eye. Hemelytra length variable, not reaching, reaching or slightly surpassing the apex of the abdomen (Figs 1 , 9 ). Vestiture: when recorded by SEM it is possible to clearly note that the general integument is covered by minute, thin, somewhat curved, adpressed, setae (e.g., Figs 4 , 6 , 15 ). It is noteworthy that by this method, it is possible to see that in the center of most of the large punctures of the abdomen there is one of these single minute setae implanted (e.g., Figs 12 , 17 ). Additionally, the following features of the vestiture, also evident under the stereoscope microscope, were recorded: head: eyes and ocelli glabrous (Fig. 3 ); sparse curved short or somewhat longer, pale to yellowish setae on distal portion of clypeus, numerous on labrum (Figs 3 - 5 ); some longer similar setae scattered on the anterior and lateral portions of the base of the first visible labial segment; the second visible labial segment with some long, erect, setae inserted on the lateral surface of median and subapical portion; the last labial segment with few scattered erect, thin, pale setae (Fig. 4 ). Antennal segments, except on scape (Fig. 5 ), covered by short, oblique, thin setae, black on pedicel and yellowish on other segments and by numerous long, erect, stout, somewhat darkened setae, approximately twice as long as the width of the scape and thrice to four times as long as the width of pedicel and basiflagellomeres, forming a pubescence; distiflagellomeres with some longer scattered elongated oblique erect setae twice to almost thrice longer than the width of the segment, which are paler on the last three segments. Thorax: posterior margin and apices of propleural posteroventral elongated processes with sparse, thin, moderately elongate setae; on prosternum, laterally to stridulitrum, a pubescence formed by thin, pale setae, which become longer towards its apex (Fig. 8 ); some groupings of pale thin, somewhat long setae on depressed anterior margin of mesosternum, below the apex of prosternum, and on the subrectangular small lateral depressions (Fig. 8 ); a patch of pale curved setae on the median wall of the middle coxal cavity (Fig. 8 ). Legs: coxa with some stout, straight, pale, thin setae on apical margin; trochanters with curved, stout, pale, thin setae, numerous on fore trochanter, which also has at least one thinner, longer subbasal setae; scattered on middle trochanter and more numerous at its inner and apical portion; and only a few on hind trochanter; fore and middle femora with curved, stout, pale, thin setae; sparse on dorsal surface of fore femur and numerous on its ventral surface, mainly on its basal half; scattered on all surfaces of middle femur; on the latter, a ventral fringe of numerous decumbent, curved, thin, very small, pale setae inserted on the median ventral crest; in some specimens this fringe is imperceptible; hind femur glabrous. Tibiae with a mid-ventral fringe of short, straight, somewhat stouter, pale setae; scattered stout pale setae on approximately basal two thirds of the segment; the setae become more numerous with interspersed longer elements towards the apex of the segment, covering all surfaces apically. Tarsi covered with numerous yellowish and golden setae, which are longer on the ventral surface.

Male genitalia. Genital capsule, in ventral and lateral views: exposed portion of pygophore sub pentagonal (Fig. 27 ) and rounded, respectively, integument smooth and shiny; not pigmented in the ventral non-exposed portion (Fig. 27 ); in dorsal view (Fig. 28 ): between anterior and posterior genital openings, a narrow, short moderately sclerotized dorsal (transverse) somewhat curved bridge (br); membranous areas of posterior genital opening smooth; proctiger (pt) subrectangular, posterior margin almost straight, slightly curved laterally, with a subapical row of long straight setae. Medial process of pygophore (mpp) sclerotized, subrectangular, somewhat larger towards apex; apical margin almost straight, slightly curved (Fig. 29 ). Parameres (pa) mildly exposed when genital capsule is in situ (Figs 22 - 24 ); their apices in contact in resting position (Figs 22 - 24 , 27 , 28 ). Parameres symmetrical, elongated, curved at approximately middle third; somewhat larger at apical fourth; apex truncated, with a short subapical tooth in inferior margin; mostly glabrous, with a few scattered thin setae and a group of stouter short setae medial to the subapical tooth (Figs 28 , 30 , 31 ). Phallus: articulatory apparatus with basal plate extension (bpe) much shorter than basal plate, the latter with moderately short and curved basal plate arms (bpa), connected by a narrow basal plate bridge (bpb) (Figs 32-34 ). Dorsal phallothecal sclerite (dps) symmetrical, enlarged to the apex, sinuous in the center of the anterior margin and somewhat sinuate laterally to the anterior margin; midlateral portions with several grooves (gr); apicolateral portions smooth, moderately thickened, and more sclerotized (Figs 32 , 35 ). Endosomal struts (es) formed by a pair of parallel arms, nearly straight at mid portion, larger at basal portion, united at base and apex, which is continuous with the dorsal phallothecal sclerite-endosomal struts fusion (dpes) (Fig. 35 ). After inflation, the endosoma takes a general shape more or less tubular (Fig. 35 ). Endosoma wall longitudinally striated on basal portion, ventrally (Fig. 33 ), smooth basally, and mostly very densely minutely, spiny, with a flat median small rounded lobe (srl) located exactly dorsal to the median process of the endosoma (mpe) (Fig. 35 ); the latter relatively small, thin, faintly sclerotized, subrectangular, its distal margin depressed at mid portion; lateral portions finely striated (Fig. 36 ). A basal wide, subtriangular process (stp); in the apex of the latter, the median process (mpe) is attached by its midportion (Fig. 35 ).

Female. Figures 37 - 52 . Similar to male in general. The body was recorded as longer and the abdomen wider (measurements presented in Table 2 ). Coloration: general coloration is the same as in males (Figs 37 , 38 ). Structure and vestiture (Figs 39 - 52 ): head: minimum distance between eyes in dorsal view (synthlipsis) somewhat less than twice (as in males) or twice (some females) longer than the width of each eye; eyes slightly smaller than in males; antennae without pubescence (long, numerous erect setae on basal segments), scape with whitish oblique setae shorter than scape diameter, pedicel with numerous oblique pale to golden setae as long as or slightly longer than its diameter, flagellomeres with oblique pale setae approximately as long as the diameter of the respective segments; distiflagellomeres with some longer scattered elongated oblique erect setae twice to almost thrice longer than the width of the segment. Hemelytra not reaching apex of abdomen (Fig. 37 ). Female genitalia: posterior view of external genitalia as in Figs 50-52 .

Distribution.

French Guiana.

Etymology.

The new species is named in honor to Dr Eric Guilbert (MNHN) for his significant contributions for the study of Heteroptera as well as all the help he has always given to his colleagues as the Curator of the Heteroptera Collection of MNHN.

Comments.

In Ectrichodiinae , the sexual dimorphism ranges from slight (e.g., body size, development of the hemelytron, and eye and ocellar size) to extreme, where females exhibit brachyptery to aptery in both pairs of wings and major modifications in other parts of the body ( Forthman and Weirauch 2017). The antennae of most New World Ectrichodiinae males are pubescent on all segments with short setae becoming more abundant on the distal segments ( Dougherty 1995). In females at least the first and often also the basal half of the second segment is bare or very sparsely pubescent and the distal segments with increasingly sparse elongate setae ( Dougherty 1995). Some of the differences between the male and female of Amazopothea guilberti gen. nov. et sp. nov. examined here are in accordance with some of the sexual dimorphic features recorded in several other species of Ectrichodiinae , as follows. In male, scape, pedicel and both basiflagellomeres segments pubescent (i.e., with numerous longer, erect setae) and eyes slightly larger. On the other hand, in both sexes, the clypeus is not pointed; the legs have similar thickness (Figs 1 , 2 , 37 , 38 ). No differences were observed in the coloration, while the females were mostly slightly larger than males in relation to their total length and wider abdomens (Tables 1 , 2 ). Among the 28 males, the length of the hemelytra was different on specimens: for 20 males, the hemelytra did not reach the apex of the abdomen (Figs 1 , 9A ), for five, the hemelytra reached the apex of the abdomen (Fig. 9B ), and for three specimens, the hemelytra slightly surpassed the apex of the abdomen (Fig. 9C ). Among the four females, the hemelytra did not reach apex of abdomen (Fig. 37 ). Therefore, taking into account the specimens examined, Amazopothea guilberti gen. nov. et sp. nov. is among the Ectrichodiinae in which the sexual dimorphism is slight.

Figures

Figures 1 - 4. Amazopothea guilberti gen. nov. et sp. nov., male 1, 2 holotype: 1 dorsal view 2 ventral view 3, 4 paratype, head: 3 dorsal view 4 lateroventral view. Scale bars: 1.0 mm (1); 0.2 mm (3, 4).

Figures 5 - 9. Amazopothea guilberti gen. nov. et sp. nov., male paratypes 5 right scape and apex of the head, dorsal view 6 pronotum, lateral view 7 scutellum, dorsal view 8 apical portion of prothorax and mesosternum, ventral view 9 approximately apical half of hemelytra and abdomen of three males, with hemelytra not reaching (A), reaching (B) or slightly surpassing (C) the apex of the abdomen, dorsal view. Scale bars: 1.0 mm (9); 0.2 mm (6); 0.1 mm (5, 7, 8).

Figures 10 - 15. Amazopothea guilberti gen. nov. et sp. nov., male paratype, abdomen 10 dorsal view 11 ventral view 12 median portion of tergite II 13 - 15 ventral view 13 sternites II, III and IV (basal portion) 14, 15 right side of sternites II and III 14 except apico-lateral portion of sternite III 15 mediolateral portion, including canaliculae between these sternites. Scale bars: 0.5 mm (10, 11); 0.2 mm (13, 14); 0.1 mm (12, 15).

Figures 16 - 23. Amazopothea guilberti gen. nov. et sp. nov., male paratype, abdomen 16 - 18 dorsal view 16 segments IV (except basal portion), V-VI and VII (basal portion), arrows point to the dag on tergites V and VI 17 dag on median anterior margin of tergite VI 18 segments VI (distal portion) and VII 19 - 22 right side of segments, latero-ventral view 19 III and most part of II and IV 20 III (distal portion), IV and V (except latero-distal portion) 21 IV (distal portion), V and VI (except latero-distal portion) 22 distal portion of segment VII, including genital capsule 23 segment VII, including genital capsule, ventral view. Abbreviation: dag: scar of dorsal abdominal gland opening Scale bars: 0.5 mm (16); 0.2 mm (18 - 23); 0.1 mm (17).

Figures 24 - 31. Amazopothea guilberti gen. nov. et sp. nov., male paratype 24 genital capsule " in situ ", ventral view 25, 26 abdominal segment VIII 25 ventral view 26 dorsal view 27, 28 pygophore and parameres 27 ventral view 28 dorsal view (br: transverse bridge; pa: paramere; pt: proctiger) 29 medial process of pygophore, anterior view 30, 31 left paramere 31 apical portion. Scale bars: 0.2 mm (25 - 28, 30); 0.1 mm (24); 0.05 mm (29, 31).

Figures 32 - 36. Amazopothea guilberti gen. nov. et sp. nov., paratype, male genitalia 32 - 34 phallus not inflated 32 dorsal view 33 ventral view 34 lateral view 35 phallus inflated, dorsal view. Abbreviations: bpa: basal plate arm; bpb: basal plate bridge; bpe: basal plate extension; dpes: dorsal phallothecal sclerite-endosomal struts fusion; dps: dorsal phallothecal sclerite; es: endosomal struts; gr: grooves; mpe: median process of endosoma; srl: flat median small rounded lobe; stp: subtriangular process 36 median process of endosoma, dorsal view. Scale bars: 0.2 mm (33 - 35); 0.1 mm (32, 36).

Figures 37 - 40. Amazopothea guilberti gen. nov. et sp. nov., female 37, 38 allotype 37 dorsal view 38 ventral view 39, 40 head 39 dorsal view 40 ventral view. Scale bars: 1.0 mm (37); 0.2 mm (39, 40).

Figures 41 - 46. Amazopothea guilberti gen. nov. et sp. nov., female paratype 41 - 43 dorsal view 41 right scape and apex of the head 42 pronotum 43 scutellum 44, 45 ventral view 44 prosternum and fore coxa 45 middle leg, apex of tibia and basal portion of tarsus, arrows point to the tibial pad 46 abdomen, dorsal view. Scale bars: 0.5 mm (42, 46); 0.1 mm (41, 43 - 45).

Figures 47 - 52. Amazopothea guilberti gen. nov. et sp. nov., female paratype 47 - 49 abdomen, dorsal view 47 segments IV (distal half), V-VI and VII (basal portion), arrows point to the dag on tergites V and VI 48 dag on median anterior margin of tergite VI. Abbreviation: dag: scar of dorsal abdominal gland opening 49 segments VI (distal portion) and VII 50 abdomen, ventrolateral view 51, 52 female genitalia 51 posterior view 52 posteroventral view. Scale bars: 0.5 mm (47, 49, 50); 0.2 mm (51, 52); 0.1 mm (48).