Mischocyttarus porantin, Silveira, 2006

Silveira, Orlando Tobias, 2006, Revision of the subgenus Kappa de Saussure of Mischocyttarus de Saussure (Hym.; Vespidae, Polistinae, Mischocyttarini), Zootaxa 1321 (1), pp. 1-108 : 86-88

Mischocyttarus porantin sp. n.

( Figs. 91, 94, 96 )

HOLOTYPE: ♀ Brazil, Pará , Bujarú, 14/viii/1977 (P. Waldir) ( MPEG).

FEMALE. Length of fore wing 9 – 9.5 mm; MWH/DLH reaching 2.4, FHH/intOW 0.91; clypeus much wider than high, H/WClp 0.80, median angle moderately projecting below, apex narrowly rounded; malar space narrow, not more than 1/3 of the height of an antennal socket; tentorial pit nearly as close to the eye as to antennal socket; mandible anterior surface without a prominent border; antennal scape short and wide, L/Wesc 2.26; occeli widely separated, POL about 2 times larger than one diameter, POL/OOL larger than 2/3; occiput completely round, without a carina; foraminal area shaped ventrally as a shelf; hypostomal lamella narrow; pronotum with lateral fovea, pronotal anterior margin medially with the lamella wide, not reflexed, region just behind definitely and acutely raised as secondary margin but scarcely projecting over the lamella, carina very low, scarcely projecting at sides ( Fig. 94 ), not forming lateral lobe, as seen from above with distinctly straight profile, total width equal to or a little larger than that of mesoscutum, sides of pronotum little converging, mesoscutum a little longer than wide, L/WMsc 1.03; fore wing very short, LDis/HMpl 2, pterostigma about 3.4 times longer than wide; metanotum well convex; inner claw of hind tarsus with apex narrowly rounded; propodeum inflated, median furrow deep, triangular, valve very wide, triangular, limit between propodeum and lower metapleuron marked by a moderate shining sulcus; first segment of metasoma moderately elongated ( Fig. 96 ), LSI/HMpl 1.16, with a short linear portion just behind the spiracles, these being very prominent, apical part not very wide, about 2.14 times wider than the basal petiole, the latter ventrally flattened, limit between sternum and tergum proximally marked by a prominent shining edge.

Sculpture: disk of clypeus with strong very dense small to medium sized punctures, and with sparse fewer larger ones, interstices only consisting of “frontiers” between punctures, area close to ventral margin reticulate and moderately shining, with few large punctures; upper interantennal area and frons with very dense medium to large sized punctures, pattern dull comb­like; mesopleuron with numerous medium sized punctures and with less dense larger ones, the two sizes classes not very distinct producing the impression of uniformity, interstices rather shining.

Vestiture: eyes with hairs short, inconspicuous.

Color: black; mandible, ventral margin of clypeus, sometimes dorsal mark on gena, sometimes lower metapleuron, legs, tergum 1 of metasoma, brown; anterior part of tegula, articular processes on meso and metapleuron, valve of propodeum (sometimes tinged with yellow), variable spots on legs, metasomal segments 2–6, light yellowish brown; inner orbit to ocular sinus, posterior margin of pronotum (sometimes dark), small spot on dorsal mesepisternal plate, posterior spot on tegula, anterior part of scutellum and axilla (sometimes), anterior margin of metanotum, small paired spots on propodeum (sometimes darkened), one streak on mid coxa, two streaks on hind coxa, inner distal margin of trochanters, apex of femora and tibiae, distal band on metasomal terga 1 and 2, less distinct band on terga 3–5, spot on dorsum of the fifth segment of fore tarsus, mid and hind tibial spurs, yellow; wings hyaline, veins dark brown.

MALE. Length of fore wing 8 – 8.5 mm; head in frontal view very low and wide, FHH/intOW 0.86; clypeus little convex, much wider than high, H/WClp 0.83, median angle obtuse; tentorial pit close to the eye than to antennal socket; antennal scape very short and wide, L/Wesc 2.12, ventral surface of antennomeres with distinct shining tyloids, third antennomere about 3 times longer than wide, apex of the antenna moderately elongated ( Fig. 91 ), with evident potential to become spirally rolled, antennomeres 11–13 distinctly flattened below, antennomere 12 about 2 times longer than wide, 13 about 3 times longer than wide, 1.2 times longer than 12; anterior face of fore coxa moderately flattened; wings very short; clypeus with dense fine punctation, and with few sparse less conspicuous medium sized punctures; clypeus and frons with dense shining decumbent pubescence, hairs longer on frons.

Color: similar to female; apex of the antenna laterally, yellow.

NEST. A nest from Bujarú, PA, 14/viii/1977 (P. Waldir; MPEG) has the comb triangular with 35 cells, and eccentric peduncle.

Etymology

the specific epithet porantin is a “Tupi” word, name of the “mythical oar” of the Sateré­Mawé, indigenous people inhabiting Central Amazonia.

Remarks

This new species while similar in color to M. injucundus shares many structural features with M. picturatus , the two species being probably closely related.

Distribution

SOUTH AMERICA: Brazil (PA).

EXAMINED MATERIAL (PARATYPES). BRAZIL: Pará , 1♀ 2♂ Bujarú, 14/viii/1977 (P. Waldir), 1♀ Bujarú, 12/i/1978 (W. França) ( MPEG) .

Figures

FIGURES 81–96. M. bertonii: 81, mesosoma part dorsal, 86, T1; M. mysticus sp. n.: 82, mesosoma part dorsal, 83, T1; M. schunkei: 84, T1, 92, male antenna; M. injucundus: 85, mesosoma part dorsal, 87, T1; M. pertinax sp. n.: 88, T1, 89, mesosoma part dorsal; M. timbira sp. n.: 90, male antenna, 93, mesosoma part dorsal, 95, T1; M. porantin sp. n.: 91, male antenna, 94, mesosoma part dorsal, 96, T1.