Rhacalysia monteiroi, Oliveira & Penteado-Dias, 2020
|
publication ID |
https://dx.doi.org/10.3897/zookeys.976.56751 |
|
publication LSID |
lsid:zoobank.org:pub:4C812D81-FCC1-42D6-B4B8-6E079086CEB8 |
|
persistent identifier |
https://treatment.plazi.org/id/C9B2CD68-89AF-434D-87DF-03BEEC3B3303 |
|
taxon LSID |
lsid:zoobank.org:act:C9B2CD68-89AF-434D-87DF-03BEEC3B3303 |
|
treatment provided by |
|
|
scientific name |
Rhacalysia monteiroi |
| status |
sp. nov. |
Rhacalysia monteiroi sp. nov. Figures 28-34 View Figures 28–34 , 35-38 View Figures 35–38
Type material.
Holotype pinned, female, (DCBU 404794) Brazil, Rio de Janeiro, Teresópolis, Parque Nacional da Serra dos Órgãos, 22°26'54"S, 43°00'49"W, alt. 1482 m, XII.2014, dense ombrophilous forest, Malaise trap, R. F. Monteiro col. Paratypes females (2), (DCBU 374756) 22°28'11"S, 43°00'05"W, alt. 868 m, VII.2015, Malaise trap, R. F. Monteiro col.; (DCBU 361820) 22°31'00"S, 43°00'23"W, alt. 252 m, XI.2015, Malaise trap, R. F. Monteiro col.
Diagnosis. Rhacalysia monteiroi can be recognized by the notauli incomplete, fore wing with m-cu interstitial, CU1a arising at middle or slightly below middle of subdiscal cell, hind wing with four hamuli, hind femur 6.2-6.7 × as long as wide, coloration of body mixed between yellowish and brown parts.
Description.
Female (Fig. 28 View Figures 28–34 ). Length. Body 3.4-4.1 mm; fore wing 3.9-4.2 mm; hind wing 2.6-3.0 mm.
Head. 1.7-1.9 × as wide as long; 1.7-1.9 × as wide as face, 1.4-1.6 × as wide as mesosoma; 2.1 × as wide as apex of first metasomal tergite; slightly wider at eyes than temples in dorsal view. Eye glabrous, 1.1-1.2 × as high as wide, 1.5-2.0 × as wide as temples in lateral view (Figs 35 View Figures 35–38 , 36 View Figures 35–38 ). Occiput, vertex and temples smooth, with some sparse setae. Frons smooth or with weak pit mesally. Face 2.0-2.5 × as wide as high, setose; low mid ridge dorsally, with rugulose pair of grooves near clypeus or some transversal striae just above epistomal sulcus (Fig. 30 View Figures 28–34 ). Epistomal sulcus deep, crenulate. Clypeus protruding, smooth, setose (setae as long as clypeus width), 1.6-1.8 × as wide as high; lateral margin of clypeus does not contact paraclypeal fovea. Malar space ca. 1/10 eye height. Paraclypeal fovea enlarged to form broad groove extending to eye. Mandible 3-dentate (Fig. 29 View Figures 28–34 ), 1.6-1.7 × as long as apical width, apex 1.4 × as wide as base; setose, rugulose medially; diagonal ridge well developed on apical half of mandible, ventral carina not visible; teeth 1 and 2 connected by flange, indistinct incision; tooth 2 wider and longer than others. Antenna 1.9 × as long as body, with 40 flagellar segments (holotype). First flagellar segment 3.3-3.8 × as long as wide; second flagellar segment 5.2-5.8 × as long as wide, 1.3 × length of first segment; third flagellar segment 4.5-4.6 × as long as wide, 1.0-1.1 × length of first segment. Maxillary palp 2.25-2.55 × as long as head height.
Mesosoma. 1.3-1.4 × as long as high, 1.9 × as long as wide, 2.4 × as high as head. Pronotum with pronope relatively large, slightly crenulate laterally and with some setae in dorsal view; smooth to slightly crenulate in lateral view. Mesoscutum 1.1 × as wide as long, scattered setae, smooth to weakly crenulate in postero-lateral margins. Notauli deep, smooth to weakly crenulate anteriorly, absent posteriorly (Figs 37 View Figures 35–38 , 38 View Figures 35–38 ). Mesoscutal pit deep, elongate, occupying 1/4 to 1/3 extent of mesoscutum. Scutellar sulcus 2.6-3.0 × as wide as long, with well-developed mid ridge and smooth lateral areas. Scutellar disc smooth, setiferous; parascutellar area smooth, with setae near scutellar sulcus. Metanotum setose anteriorly, in dorsal view rugose to rugulose medially, smooth to slightly crenulate near anterior and posterior margins of depressed lateral fields (Fig. 31 View Figures 28–34 ); anterior mid ridge complete, some lateral carinae incomplete to absent; metanotum in lateral view with median flange slightly higher than scutellar disc. Mesopleuron with some setae postero-ventrally and subalar area; antero-basal margin weakly crenulate towards anterior subalar area; posterior margin crenulate. Precoxal sulcus deep, crenulate, separated from posterior margin (Fig. 35 View Figures 35–38 ) or almost entirely smooth (Fig. 36 View Figures 35–38 ). Propodeum with median carina anteriorly, posterior half with pentagonal areola ca. as long as wide (Fig. 31 View Figures 28–34 ); smooth to slightly rugose near to carinae and inside areola. Metapleuron rugose posteriorly and setose.
Fore wing. 1.0-1.2 × as long as body. Pterostigma 3.6-4.1 × as long as wide, 2.1-2.3 × as wide as vein r length; r 0.2-0.25 × as long as 2-SR, arising distad midpoint of pterostigma; submarginal cell 2.5-3.5 × as long as high; 2-SR 2.4-2.7 × as long as r-m, 1.3-1.6 × as long as 3-SR; 3-SR 3.0-3.1 × as long as r, 1.7-2.0 × as long as r-m; SR1 3.8-4.0 × as long as 3-SR; 2-CU1 1.0-1.35 × as long as m-cu, this interstitial; cu-a postfurcal by distance ca. equal to its length; subdiscal cell closed, slightly expanded distally, CU1a arising at middle to slightly below middle of subdiscal cell (Fig. 32 View Figures 28–34 ).
Hind wing. With four hamuli, 4.1-4.9 × as long as wide; vein 1-M 1.0-1.2 × as long as M+CU, 1.4-1.7 × as long as 1r-m; m-cu antefurcal, heavily nebulous, tubular basally or not, almost reaching wing margin (Fig. 33 View Figures 28–34 ).
Legs. Hind femur 6.2-6.7 × as long as wide. Hind tibia 12.2-12.7 × as long as its maximum subapical width, 1.1-1.2 × as long as hind tarsus. First segment of hind tarsus 1.7-1.8 × as long as second segment.
Metasoma. First metasomal tergite 1.0-1.1 × as long as apical width; apex 1.8-1.9 × as wide as base, strigose to slightly strigose; dorsal carinae converging in basal third, extending posteriorly as median carina incomplete or median carina absent (Fig. 34 View Figures 28–34 ); dorsope deep. Ovipositor 1.35-1.5 × as long as hind tibia, 1.45-1.7 × as long as mesosoma; straight. Ovipositor sheath setose.
Color. Body parts vary between dark brown to yellow (Figs 35-38 View Figures 35–38 ). Head mostly yellow, vertex yellow to brown, ocellar field and epicranial suture dark brown; mandible light yellow. Flagellar segments brown to dark brown, except 18-19 whitish (holotype). Propleuron yellow; mesonotum yellow-orange, with more or less developed lateral and antero-medial spots brown, other parts of mesosoma varying from yellow-orange to dark brown. Legs yellowish to orange; telotarsus brown; hind leg with tibia and tarsus darker. Metasoma yellow except for metasomal tergites 4 towards to apex and ovipositor sheaths brown. Wings hyaline to dusky, venation and pterostigma light brown to dark brown.
Male. Unknown.
Etymology.
The species is named in honor of Ricardo Ferreira Monteiro, the collector of the studied material.
Distribution.
Brazil, State of Rio de Janeiro, Teresópolis, dense ombrophilous forest.
Comments.
Rhacalysia monteiroi shares many morphological characteristics with R. jatai ; both species can be differentiated by the coloration pattern of body, relative length of the ovipositor, and relative length/wide of the posterior femur (see above).
The three specimens of R. monteiroi studied here vary considerably in some characteristics. In short, the sculpturing of face (striate or rugulose above the clypeus), notauli (smooth or weakly crenulate), precoxal sulcus (smooth or crenulate), and first metasomal tergite (with or without median carina); the coloration of vertex, pronotum, metanotum, propodeum, and metapleuron yellowish or brown (Figs 35-38 View Figures 35–38 ). Despite this, the observed variations were not significant to consider them as different species.
Members of the genera Idiasta and Rhacalysia can be morphologically differentiated as follows: paraclypeal fovea not extending to eye in Idiasta (Fig. 3 View Figures 1–7 ); paraclypeal fovea enlarged to form broad groove extending to eye in Rhacalysia (Figs 10 View Figures 8–11 , 21 View Figures 19–23 ).
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.