Aleiodes angustus Shimbori & Shaw 2020, sp. nov.

Aleiodes angustus Shimbori & Shaw sp. nov.Figs 8-13

Type material.

Holotype, female (CNCI), top label: "Avispas, 400m. PERU Madre de Dios Dept. Sept. 12-20, 1962 L.E. Pena.", bottom label: "divided Radiellan + Interanal New Genus [hand written] Det. W.R.M. Mason 75."

Paratypes. 1 female, 1 male (CNCI), same as holotype; 1 male (CNCI) "BRAZIL: Mato Grosso Sinop, X.1974, 350m 12°31'S, 55°37'W malaise, M. Alvarenga"; 1 female (MUSM) "PERU: CUSCO, La Convención, Echarate, C.C. Timpia. 72°49'34.56"/ 12°06'47.04" 519m. 20-21.x.2009. Light. M. Alvarado & Rázuri”; 1 female (MUSM), same data except "... C.C. Pomareni. 72°50'8.89"/ 12°15'28.38" 477m. 08.xi.2009 Light C. Carranza y C. Rossi"; 5 females (MUSM) "PERU: MD, Rio Los Amigos, CICRA, Aeródromo, 276m, 12°33'36"S, 70°06'17.5"W 22-28.vii.2006, Light trap, A. Asenjo"; 3 females (MUSM) "PERU: JU, Pachitea River-System Stat. Panguana am. Rio Llullapichis, trop. Tiefland-Regenwald. 260m, 9°37'S, 74°56'W 2-20.x.2009, G. Riedel."

Description.

Body length 7.3-8.0 mm. Fore wing length 5.9-6.3 mm.

Head. In dorsal view eye length/temple 3.5-4.0. Eye height/head width 0.41-0.43. Eye height/minimum distance between eyes 1.1-1.2. OD/POL 2.4-2.6. OD/OOL 2.5-3.2. Frons excavated. Frons lateral carina weakly indicated. Occipital carina dorsally incomplete. Occiput in dorsal view weakly indented medially. Occipital carina not curved toward ocelli. Occipital carina ventrally meeting hypostomal carina. Mid-longitudinal crest at upper face present. Hypoclypeal depression/face width 0.35-0.45. Malar space/eye height 0.2. Face height/width 0.6-0.7. Clypeus height/width 0.56-0.60. Clypeus convex, granulate. Sculpture of head shiny granular-coriaceous. Face transversely rugose-striate, medially granular-coriaceous below crest.

Antenna. Antennal segments 47-48. Antenna/body length 0.94-0.96. Scape/pedicel length 2.0-2.1. Length of first/second flagellomere 1.2-1.3. Fourth flagellomere length/apical width 1.3-1.4. Tip of apical segment of antenna pointed.

Mesosoma. Length/height 1.5-1.6. Width of mesoscutum/width of head 0.76-0.83. Mesoscutum length/width ~ 1.1. Pronotal collar/vertex 0.6-0.8. Prescutellar sulcus with complete mid-longitudinal carina, and a few irregular and incomplete carinae laterally. Mesoscutum posterior border with distinct complete carina. Metanotum with mid-longitudinal carina present anteriorly. Metanotum mid-pit present, delimited by carinae. Mid-longitudinal carina of propodeum complete. Ventral mid-line of mesopleuron smooth, without distinct sulcus; pit at ventral mid-line present, shallow. Notauli weakly indicated anteriorly, indistinctly crenulate. Sternaulus weakly indicated anteriorly, rugose. Sculpture of mesosoma mostly granulate. Pronotum rugose laterally, pronotal groove curvedly crenulate anteriorly. Mesopleuron rugose below subalar groove. Subalar groove crenulate. Mid-posterior region of mesoscutum rugose. Mesoscutellar trough entirely costate. Metanotum mostly smooth, with one or two pairs of lateral carinae. Propodeum mostly shiny granular-coriaceous, with a few carinae radiating from mid-posterior knob.

Wings. Fore wing: Stigma length/height 3.0-3.2. Vein r/2RS 1.1-1.3. Vein r/RS+Mb 1.4-1.6. Vein 3RSa/2RS 1.2-1.5. Vein 3RSa/2M 0.8-0.9. Vein 3RSa/3RSb 0.32-0.43. Vein 1CUa/1CUb ~ 0.8. Vein 1CUa/2CUa 1.65-1.75. Vein 1cu-a vertical. Vein 1M strongly curved at base. Vein RS+Ma weakly curved. Vein M+CU virtually straight. Vein 1-1A distinctly sinuate basally. Vein 1a present and tubular. Second submarginal cell trapezoidal. Subbasal cell mostly glabrous, with sparse setae basally, a small setose patch at the infuscate region bellow vein 1CUa, and two or three irregular rows of short setae subapically above vein 1-1A. Basal cell with more or less large glabrous region posteriorly, sometimes with sparse setae; costal and apical regions evenly setose. Hind wing: Vein RS bent at basal 0.3, with vein r present. Marginal cell narrowest at base. Vein M+CU/1M 2.3-2.5. Vein M+CU/r-m 1.7-1.8. Vein m-cu present, spectral. Vein m-cu position relative to vein r-m interstitial, or just postfurcal. Vein 2-1A absent. Basal cell sparsely setose, bare posteriorly.

Hind legs. Femur length/width 3.7-4.0. Length of tibia/tarsi 1.2-1.3. Length of basitarsus/tarsi 2-4 ~ 0.7. Sculpture of hind coxa dorsally mostly shiny granular-coriaceous, finely striate apically. Tarsal claws not pectinate.

Metasoma. T1 length/apical width ~ 1.0. T2 length/apical width 0.8-0.9. T3 length/apical width 0.7. Mid-longitudinal carina extending until T2. Metasoma sculpture T1 and T2 costate, basal 0.2 of T3 finely costate, remainder terga granular-coriaceous. Ovipositor sheath/hind basitarsus 1.4. Ovipositor sheaths unusually long and with, with truncate apex; apical point absent

Color. Brownish yellow. Hind femur dark brown at apical 0.2; all fifth tarsomeres light brown. Wings faintly tinged yellow; most veins yellow, infuscate spots at fore wing veins 1M/1CUa, apex of 1CUa, 2CUb, and veins enclosing second submarginal cell. Ovipositor sheaths honey brown with dark brown apex.

Male. Essentially as in female, but metasoma not laterally compressed apically. Body length 5.6-6.2 mm, fore wing length 4.2-5.4 mm; 42-44 antennomeres.

Diagnosis.

Aleiodes angustus is the only species in this study with long and wide ovipositor sheaths that are distinctly longer than hind basitarsus (Fig. 11). It is most similar to A. asenjoi but has the ovipositor sheaths very long and large (Figs 8, 11); the division between T2/T3 is very weak and T3 is mostly smooth and without a longitudinal carina (Fig. 10); the metasoma is compressed laterally beyond T2 (Figs 10, 11); and the scutellum is entirely yellow. By contrast, in A. asenjoi the ovipositor sheaths are much shorter (Figs 14, 17); a division between T2/T3 is present and distinct (Fig. 16); and the scutellum is usually dark brown apically. Males are more difficult to separate; however, males of A. angustus have a longer basal triangular polished area that clearly extends dorsally, as compared with strictly basally in A. asenjoi.

Distribution.

Known from several localities in Peru, and in Mato Grosso state in Brazil.

Etymology.

The name angustus is from the Latin word for narrow or slender, being a reference to the compressed and narrow apex of the metasoma in this species (Fig. 10).