Pulchrijassus, Dietrich & Magalhães & Takiya, 2020
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publication ID |
https://doi.org/ 10.5852/ejt.2020.695 |
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publication LSID |
lsid:zoobank.org:pub:DC24EAB0-DCF5-44A8-B1A0-82BF25D280C2 |
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DOI |
https://doi.org/10.5281/zenodo.4342249 |
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persistent identifier |
https://treatment.plazi.org/id/AA66B90F-54BF-4F17-ABC6-655742CDC17A |
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taxon LSID |
lsid:zoobank.org:act:AA66B90F-54BF-4F17-ABC6-655742CDC17A |
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treatment provided by |
Valdenar |
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scientific name |
Pulchrijassus |
| status |
gen. nov. |
Pulchrijassus View in CoL gen. nov.
urn:lsid:zoobank.org:act:AA66B90F-54BF-4F17-ABC6-655742CDC17A
Figs 3 View Fig J–Q, 14, 18D–R
Type species
Pulchrijassus anjozorobensis View in CoL sp. nov.
Diagnosis
This genus may be distinguished by the following combination of features: body medium-sized; dorsum heavily marked with symmetrical black, brown or red stripes or other maculae; vertex strongly overlapping anterolateral margin of eye, crown irregularly rugose; forewing usually with supernumerary crossveins between R and M; hindwing veins R4+5 and M1+2 completely confluent apically; hind femur macrosetal formula 2+ 2+1; style without denticule; aedeagus without processes, shaft simple, recurved.
Etymology
The genus name, a masculine noun, combines the Latin prefix ʻ pulchri -ʼ (ʻbeautifulʼ) with the common suffix for genera of Iassinae , ʻ- jassus ʼ.
Description
HABITUS. Medium-sized to large platyjassines (6.4–11.0 mm). Color variable, dorsum usually strikingly marked with alternating pale and dark longitudinal stripes.
HEAD. Crown flattened, subequal to or slightly shorter than pronotum, with numerous irregular transverse striations, becoming less prominent posteriorly, anterior margin strongly produced, spatulate, forming hood over dorsal part of face, strongly overlapping eye margin; ocelli anteromesad of eyes, relatively distant from eyes and from anterior margin of crown. Frontoclypeus moderately convex, punctate medially, without median dorsal depression; antennal ledge absent, apparently coinciding with anterior margin of head; lateral frontal suture extended anterad beyond antennal pit, but not reaching head margin; gena slightly emarginate below eye, proepisternum partially exposed; lorum small, flat; anteclypeus convex, lateral margins evenly divergent distally; rostrum slender, not surpassing front trochanters.
THORAX. Pronotum slightly declivous, in profile continuing contour of crown, much wider than head, lateral margins strongly divergent posterad, transverse striations distinct. Forewing with numerous supernumerary crossveins in distal half between R, M and Cu, appendix broad and extended to wing apex, inner apical cell elongate, slender. Hindwing veins R4+5 and M1+2 completely confluent distally. Front femur row IC with setae in single row;AV with single row of stout setae in basal half, dorsal surface of tibia rounded, PD and AD macrosetae only partially differentiated. Hind femur macrosetal formula 2+ 2+1, tibial row AD with one or more smaller setae between successive macrosetae; tarsomere I with two plantar rows, pecten with 3 platellae.
ABDOMEN. Male pregenital sternite distinctly longer than sternite VII, posterior margin truncate. Pygofer base band-like, dorsally with median posterior projection; lobe fused to base, membranous cleft absent, with numerous macrosetae in distal half, apex narrowly rounded, processes and spines absent, ventral margin without distinct group of fine setae. Subgenital plate relatively broad and strongly depressed, with median longitudinal row of macrosetae, dorsolateral margin with few sparse, short setae. Style apophysis slender, acuminate, without conspicuous denticuli. Aedeagus without processes, shaft simple, stout, recurved, apex rounded in lateral view. Female abdominal sternite VII with posterior margin weakly trilobed. Second valvulae broadened beyond basal third, then tapered to apex, dorsal margin serrate, with numerous distinct teeth in distal half.
Remarks
This genus closely resembles Plexijassus gen. nov. overall, but differs in having the dorsal coloration consisting of symmetrical black, brown or red markings and in lacking long supernumerary costal crossveins.
Key to species of Pulchrijassus View in CoL gen. nov.
1. Eyes completely bordered with black or brown pigment on crown and pronotum in dorsal view ( Fig. 3J View Fig )..............................................................................................................................................2
– Eyes not bordered with black pigment in dorsal view...............................................................6
2. Black pigment bordering eyes consisting of stripes with medial margins straight, forming continuous, slightly divergent lines along crown and pronotum ( Fig. 3P View Fig ) .......................................... ...................................................................................... Pulchrijassus talatakelyensis View in CoL gen. et sp. nov.
– Black pigment bordering eyes consisting of curved stripes or crown entirely black ( Fig. 3J View Fig )...3
3. Crown black, with medial pale area, if present, indistinct ( Fig. 3O View Fig ) ................................................... ............................................................................................... Pulchrijassus sindhuae View in CoL gen. et sp. nov.
– Crown with large pale area medially ( Fig. 3 View Fig J–K).........................................................................4
4. Median longitudinal dark stripe on pronotum not expanded posteriorly ( Fig. 3J View Fig ) ............................ ................................................................................... Pulchrijassus anjozorobensis View in CoL gen. et sp. nov.
– Median longitudinal dark stripe on pronotum abruptly expanded posteriorly ( Fig. 3K View Fig )........5
5. Dorsum yellow with dark brown markings ( Fig. 3K View Fig ) ....... Pulchrijassus eunsunae View in CoL gen. et sp. nov. – Dorsum ivory with pale brown markings ( Fig. 3Q View Fig ) ... Pulchrijassus toamasinensis View in CoL gen. et sp. nov.
6. Dorsum almost entirely bright red, pronotum without longitudinal stripes ( Fig. 3M View Fig ) ...................... .................................................................................................. Pulchrijassus roseus gen. et sp. nov. – Dorsum with longidudinal stripes ( Fig. 3L, N View Fig )..............................................................................7
7. Dorsum mostly pale stramineous, pronotum with two pairs of narrow brown longitudinal stripes ( Fig. 3L View Fig ) ............................................................................ Pulchrijassus pallescens gen. et sp. nov. – Dorsum ochraceous, with reddish stripes ( Fig. 3N View Fig ) .... Pulchrijassus rubrilineatus gen. et sp. nov.
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