Ovomanonychus, Costa & Cherman & Iannuzzi, 2020
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publication ID |
https://doi.org/ 10.11646/zootaxa.4759.1.4 |
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publication LSID |
lsid:zoobank.org:pub:DA789391-F0EB-4CF2-A954-8CBACE37D57C |
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DOI |
https://doi.org/10.5281/zenodo.3811909 |
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persistent identifier |
https://treatment.plazi.org/id/DD4387AE-D433-8B65-BCFC-FB4BA36EAA69 |
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treatment provided by |
Plazi |
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scientific name |
Ovomanonychus |
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Ovomanonychus View in CoL Costa, Cherman, & Iannuzzi, new genus
Type species. Manonychus rosettae Frey, 1976 , here designated.
Diagnosis. Ovomanonychus is distinguished from all other Sericoidini by the following combination of characters: ovate body; labrum vertical, with superior margin inflated, hidden below the clypeus, not on same plane; galea with outer margin curved; labium longer than it is wide; antennae with nine antennomeres and club (with three antennomeres) longer than flagellum; absence of membrane along median of anterior pronotal margin; six fused ventrites, except the VI articulate; ventrite I with basal half hidden by metacoxae and ventrite VI one quarter the length of other ventrites; ventrite V and propygidium separated by suture; tarsomeres with sparse setae ventrally; elytra with strong costae; procoxae conical; apical protibial spur in both sexes; mesocoxae three times longer than wide; metacoxae longer than ventrite II; mesotarsomere I longer than mesotarsomere II; claws simple on all tarsi; metatibia with two apical spurs, spurs set below and above the tarsal articulation.
Description. Length: 10.0–12.0 mm; width: 4.0– 5.5mm. Body reddish brown, ovate sides slightly arcuate at middle of elytra ( Fig. 1A View FIGURE 1 ). Head: Anterior margin rounded; distance between eyes twice or three times the width of one eye; frons densely punctate; frontoclypeal suture strongly impressed; canthus covered by clypeus; clypeus trapezoidal, punctate ( Fig. 1E View FIGURE 1 ), strongly reflexed, and separated from labrum by a suture; labrum with superior margin bulged, vertical, hidden below the clypeus, not on same plane; galea of maxilla with outer margin curved ( Fig. 1B View FIGURE 1 ); galea with tooth I projected; lacinia with distal portion forming a tooth–like projection; labium densely setose along the lateral margin, longer than wide ( Fig. 1D View FIGURE 1 ); palp insertion covered by the labium and placed submedially; ligula and labium fused; antennae with nine antennomeres, club with three antennomeres and longer than flagellum ( Fig. 1E View FIGURE 1 ). Prothorax: Pronotum wider than long, glabrous, densely punctate, disc narrowly smooth along midline; absence of membrane along median of anterior pronotal margin ( Fig. 1E View FIGURE 1 ); anterolateral region slightly depressed; lateral margin sparsely setose; anterior angle rounded; anterolateral margin arcuate, posterolateral margins straight; proepimeron smooth laterally. Pterothorax: Scutellum subtriangular; mesosternum with foveolate, bristled punctures; internal posterior angle of mesepimeron acute and projected; metasternum bristles long; distance between the mesocoxae and metacoxae equal to length of metacoxae; metepisternum with coarse punctures. Elytra: Shiny, with costae parallel to the elytral suture, which is elevated ( Fig. 1A View FIGURE 1 ). Legs: Procoxae conical, with sparse punctures on proximal region; profemurs with aggregated punctures extending from the base to the disc; protibia with sculpture and three teeth well developed, tooth II forming an acute angle with tooth III; apical protibial spur in both sexes; protarsomeres cylindrical; mesocoxae contiguous, punctate distally and three times longer than wide; mesofemur with parallel double row of punctures; mesotibia gradually enlarged towards apex, and with two transverse carinae; transverse carina II incomplete (non-reaching inner margin of mesotibia); two apical spurs, spurs set below and above the tarsal articulation; mesotarsomere I longer than mesotarsomere II ( Fig. 2A View FIGURE 2 ); metacoxae longer than ventrite II, with dense or sparse bristles; metacoxal lateral margin in obtuse angle; metafemur with row of punctures posteriorly and smooth basally; transverse carina II incomplete; metatibial apical spurs with equal or different size ( Fig. 2B View FIGURE 2 ), spurs set below and above the tarsal articulation; apex of metatibia prominent at the tarsal articulation; ventral surface of all tarsomeres with sparse bristles ( Fig. 1F View FIGURE 1 ); all claws simple. Abdomen: Six fused ventrites, except ventrite VI which is articulate; ventrite I with basal half hidden by metacoxae and ventrite VI one quarter the length the others ( Fig. 2C View FIGURE 2 ); lateral keel along the ventrites; ventrites II–VI with transverse row of setose punctures; pygidium and propygidium separated by suture; propygidium punctate. Male genitalia: Parameres symmetrical, converging at apex; outer margin slightly curved on distal third; inner margin on distal portion curved; medial portion of proximal margin lobed.
Sexual dimorphism. Males and females are quite similar, except in the protibial tooth I stronger in females and pygidium slightly convex in females and flat in males.
Etymology. Adjective in the nominative singular. From the Latin ovum (“egg”) + Manonychus in reference to the body shape and original placement of the type species. The name is masculine in gender.
Composition. Ovomanonychus rosettae ( Frey, 1976) new combination, Ovomanonychus inajae new species, and Ovomanonychus striatus new species.
Geographical distribution. Endemic to the Midwest (Mato Grosso), Southeastern (Espírito Santo, Minas Gerais, Rio de Janeiro, and São Paulo), Northeastern (Bahia), and Southern (Paraná) regions of Brazil ( Fig.3 View FIGURE 3 ).
Remarks. Ovomanonychus new genus resembles Manonychus in the labrum hidden by the clypeus (in dorsal view), with superior margin inflated; and labium quadrate. Ovomanonychus differs from Manonychus (characters in parenthesis), in the galea with outer margin curved ( Fig. 1B View FIGURE 1 ) (galea with outer margin lobed; Fig. 1C View FIGURE 1 ); elytra with costae ( Fig. 1A View FIGURE 1 ) (elytra almost smooth); tarsomeres in all legs with sparse bristles ventrally ( Fig. 1F View FIGURE 1 ) (protarsomeres and mesotarsomeres with pads; Fig. 1G View FIGURE 1 ); metacoxae longer than ventrite II ( Fig. 2C View FIGURE 2 ) (metacoxae length equal to ventrite II; Fig. 2D View FIGURE 2 ).
We place Ovomanonychus new genus in Sericoidini based on the following combination of characters: labrum hidden by the clypeus (in dorsal view); clypeus and labrum separate by suture; ligula and labium fused; metatibial apically with two spurs, spurs set below and above the tarsal articulation; lateral keel along the abdominal ventrites; abdomen with six ventral sternites (basal sternite partially hidden by metacoxae), sternites approximately equal in length, evenly convex, separated by distinct sutures ( Smith 2008).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.