Oncerotrachelus conformis Uhler, 1894

Gil-Santana, Hélcio R., 2013, Two new species of Oncerotrachelus Stål (Hemiptera: Heteroptera: Reduviidae: Saicinae), from Amazonas, Brazil, with taxonomical notes, Zootaxa 3626 (2), pp. 268-278 : 272-274

Oncerotrachelus conformis Uhler, 1894

PLATE 3. Figs. 14–19, Oncerotrachelus conformis , 14–17, female, 14, dorsal view, 15, lateral view, 16, first antennal segment, basal half, 17, humeral spines and scutellum, lateral view, schematic, 18–19, male, 18, left proleg, lateral view, 19, thorax, lateral view.

PLATE 4. Figs. 20–26 Oncerotrachelus conformis , male, 20, scutellum, hemelytra and connexivum, dorsal view, 21, last two abdominal segments with male genitalia in situ, ventral view, 22–26, male genitalia, 22, pygophore and parameres, dorsal view, 23–25, paramere, 25, apex, 26, phallus, dorsal view.

Morphological remarks. Female (Figs. 14–17): Dimensions (in mm): Total length: to tip of abdomen: 4.5; to tip of forewings: 4.7; head length: 0.7; antennal segments: I: 1.3; II: 0.8; III and IV: absent; rostral segments: I: 0.55; II: 0.24; III: 0.25. Thorax: pronotum: fore lobe length: 0.35; hind lobe: length: 0.4; width at posterior margin: 0.9. Legs: prolegs: coxa: 0.5; femur: 1.3; tibia: 1.2; tarsus: 0.35; middle legs: femur: 1.3; tibia: 1.6; tarsus: 0.2; hind legs: femur: 2.1; tibia: 2.6; tarsus: 0.35. Abdomen: length: 2.3. General color yellowish brown to testaceous; integument shiny with numerous, long and short golden and yellowish hairs (Figs. 14–15). HEAD (Figs. 14, 16): somewhat darkened on dorsal portion of interocular and post-ocular areas, with numerous long, erect or curved hairs, less numerous on interocular space; a rounded tubercle with several stiff setae located anteroventrally between antennal insertion and apex of head; stiff bristles implanted laterally on post-ocular area as well; transverse sulcus deep, reaching eyes at hind margin; post-ocular region subglobose; inter-ocular distance about 1.08 times width of eye; eyes globose in dorsal view, occupying dorso-ventral height of head in lateral view. Antennal segments slender; segment I somewhat thicker subbasally; clothed with short fine hairs and some longer sparse, these approximately 3.5 times and 4.5 times width of segment at basal half and at distal half, respectively (Fig. 16); segment II with short and somewhat longer sparse fine hairs. Rostrum: stiff hairs on upper surface of segments and sparse short fine hairs on ventral and lateral faces with some longer hairs on first segment; segment I elongated, thinner at basal portion, reaching distal portion of post-ocular ventral area; segment II moderately swollen; segment III slender, tapering. THORAX (Fig. 14–15, 17): darkened, with acetabula, humeral angles and its spine and distal half of scutellum brighter to yellowish; anterolateral angles rounded in dorsal view; prothorax divided by a furrow between anterior and posterior lobes of pronotum, these shallower medially (Fig. 14); median longitudinal sulcus relatively broad, much deeper on anterior lobe, not reaching hind margin of posterior lobe (Fig. 14); anterior lobe with pair of oblique, shallow sulci; integument of both lobes of pronotum very finely rugose; humeral angles rounded with prominent and somewhat curved spine, with acute apex (Figs. 15, 17); lateral shallow and straight ridge on anterior lobe, fore acetabula prominent, divided by a sulcus; Scutellum long, triangular, with thick and elevated margins forming lateral carina, and numerous long hairs, except on disc where hairs short; median carina obsolete; apical spine long, moderately elevated basally, apex directed posteriorly (Fig. 17). A strong spiniform process with rounded apex implanted on posterior of anterolateral angle of metathorax. Sternal area brighter; prosternum larger on anterior margin, stridulitrum long, narrow; mesosternum larger than metasternum, both with median carina. Forewings extending slightly beyond tip of abdomen (Fig. 15); darkened, with basal portion and C + R vein (nomenclature follows Villiers 1943a), except its apex and pterostigma, yellowish; anal area brighter as well; C+R and R + M veins and pterostigma covered with long fine hairs. Legs somewhat darkened on femora distally, with golden and yellowish long hairs, these more numerous on profemora ventrally; protibiae swollen apically; procoxa approximately three times longer in length than in width, with a bump on its inner side with bright wax-like excretion attached; femora somewhat curved in middle portion. ABDOMEN: posterior angles of connexival segments I–VI with short and acute spines, these decrease in size distally; connexivum whitish, with distal half of each segment darkened (Fig. 14); sternites darkened at lateral portion, almost forming a stripe; sternites I–II and anterior half of III provided with median longitudinal keel; series of small punctations between sternites I–II and I–III. Genital segments yellowish. Male (Figs. 18–26). Dimensions (in mm): Total length: to tip of abdomen: 5.0; to tip of forewings: 5.0; head length: 0.75; antennal segments absent; rostral segments: I: 0.6; II: 0.25; III: 0.25. Thorax: pronotum: fore lobe length: 0.35; hind lobe: length: 0.4; width at posterior margin: 0.95. Legs: prolegs: coxa: 0.5; femur: 1.5; tibia: 1.4; tarsus: 0.45; middle legs: femur: 1.5; tibia: 1.7; tarsus: 0.35; hind legs: femur: 2.4; tibia: 3.0; tarsus: 0.35. Abdomen: length: 2.6. Similar to female. HEAD: interocular distance about 0.95 times width of eye; eyes somewhat larger; antennal segments absent; tip of scutellum recurved upward when observed in lateral view (Fig. 19); hemelytra not extending beyond tip of abdomen; short and acute spines of posterior angles on connexival segments I–V, these decrease in size distally (Figs. 20–21); connexivum somewhat narrower, yellowish with distal segment less darkened (Fig. 20); sternites darkened at lateral portion, forming large stripe; canaliculae between sternites I–II and punctuations in sutures between sternites II–V; prominent median longitudinal keel runs along all sternites (Fig. 21). Genital segments somewhat darkened basally.

MALE GENITALIA (Figs. 21–26): Medial process of pygophore elongated (Figs. 21–22). Pygophore subsquared (Figs. 21–22). Parameres symmetrical, with sparse hairs, slightly curved at middle portion, basis thinner (Figs. 22–24); apices with subhemispherical apical tooth (Fig. 25). Phallus somewhat elongated, enlarged until apex (Fig. 26).

Material examined: 1 male and 1female, BRAZIL, Amazonas, Panaju, Rio Papagaio (20003S; 624354W), VI.2001, mata terra firme, Malaise trap, Henriques, Vidal & Silva leg., [INPA].