Argoravinia alvarengai
This species is similar to A. rufiventris, A. catiae and A. paraensis since they show cercus strongly bent backward and with spines on dorsal surface. A. alvarengai differs from the others in having very long and narrow lateral apophyses that has a claw-like apex. In the other four species it is large and short, with rounded apex and without point.
NEOTROPICAL - Brazil (Amapá, Pará, Roraima), Colombia, Trinidad & Tobago (Trinidad), Venezuela
Length: 5−7 mm (n = 6).
Parafacial and fronto-orbital plates with golden or grayish microtomentum, with a row of black setulae along eye margin and many scattered setulae around reclinate fronto-orbital bristle; frontal vitta brown, reddish on anterior one-third; frons at vertex with 0,33 mm of head width; frontal row of five to six convergent bristles, superior one usually hair-like; one reclinate fronto-orbital bristle, proclinate absent; inner vertical bristles with about 2.5x as long as frontal bristles; outer vertical bristle divergent and differentiated from the postocular setae; gena and postgena gray, gena with short black setae and postgena with slender and light long setae; scape and pedicel reddish, pedicel with short black setae and one long and slender seta on posterior margin, first flagellomere black with whitish microtomentum, about 3x as long pedicel; arista plumose in basal half; palpus brown.
Thorax. Dark brown with silvery grey microtomentum. Postpronotal lobe with golden microtomentum. Pleura dark-brown with golden scattered microtomentum. Spiracular fringe light-brown. Chaetotaxy: acrostichals = 0+1 (weakly differentiated), dorsocentrals = 3+4 (two posterior longer), intra-alars = 2+3, supra-alars = 2 (anterior small)+3 (median longer), postpronotals = 3, postalars = 2, notopleurals = 4, scutellum with marginal bristles = 2, apicals = 1, discals = 1, meropleurals = 5-6, katepisternals = 3 (in a line), postalar wall setulose. Wing hyline, R1 setulose in proximal half, R4+5 setulose in basal 2/3 to crossvein r-m, costal spine not differentiated, third costal sector without ventral setulae, r4+5 opened. Legs black with silvery grey microtomentum on femora; fore femur with a row of long setae on dorsal and ventral margin, one row of median setae on anterior face; fore tibia with two bristles on basal third of anterior face and one bristle on apical third of posterior face; mid femur with one row of ventral setae on basal half, one row of median bristles on anterior face and two pre-apical bristles on posterior face, ctenidium present, mid tibia with one bristles on apical third of anterior face and two posterodorsal median bristles; hind femur with a row of bristles on dorsal and ventral margin, a row of median bristles on anterior face and one preapical posterodorsal bristle; hind tibia with two bristles on basal half of anterior face and four setae on dorsal margin.
Abdomen. Black with the usual pattern of silvery gray microtomentum, covered with short black setae; T1+2-3 without median marginal bristle; T4-5 with a row of marginal bristles. ST1-4 quadrangular, ST1 with short black setae, ST2-4 with long and slender light setae; ST5 with posterior arms long, divergent, with rounded apex, and with long setulae on inner lateral margin. Posterior margin with a narrow, short cleft on median region.
Terminalia. Syntergosternite 7+8 very large and globulous, grayish with scattered short black setulae and three marginal bristle; epandrium reddish with short black setulae, cercus short and strongly bent backward, with a short apical projection on outer lateral margin, cercus apex with a cluster of spines on dorsal surface, ventral surface of cercus with many scattered spines; lateral apophyses very long and narrow, covering basal portion of surstylus and lateral margin of cercus, with pointed claw-like apex; surstylus with narrow base and enlarged apex, with long and slender setae at apex. Ejaculatory apodeme very large. Paramere long and narrow, with distal half perpendicular to basal half, and with a strong apical bristle on anterior margin. Gonopod very long and narrow gently curved upward, with bifid apex. Phallus reddish with articulation between basi- and distiphallus; distiphallus with narrow base and enlarged apex; juxta vestigial; lateral plate large, folded and with apophyses; vesica short and membranous, V-shaped, with short and wide stem, and anterior margin very thick; lateral styli long and tubular, striated at apex, and with free base; median stylus very long and slender.
Length = 4.0−7.5 mm (n = 3).
As described for male except as follows: two well developed proclinate fronto-orbital bristles; mid femur without ctenidium; T3 without marginal lateral bristle, T5 with 10 marginal bristles; T6 entire with narrow hind region and a series of marginal bristles; spiracle 6 situated in membrane and 7 within the sclerite; T8 divided into two narrow plates, without setae; ST1−2 quadrangular and covered with short setae, ST2 with four marginal bristles, two central ones stronger than laterals; ST3−4 oval and covered with short setae and with two strong marginal bristles; ST5 squared and with short setae and four strong marginal bristles; ST6−7 larger than other sternites, with long marginal bristles and short scattered setae on posterior half; ST8 short, covered with short setae and long marginal bristles; hypoproct membranous and covered with short setulae and with long marginal bristles; cercus rounded, with long and short setae; epiproct membranous and bearing one long setula; spermathecae pyriform, strongly striated, similar to those of A. rufiventris.