Ragwelellus, ODHIAMBO, 1962

Namyatova, Anna A. & Cassis, Gerasimos, 2016, Systematic revision and phylogeny of the plant bug tribe Monaloniini (Insecta: Heteroptera: Miridae: Bryocorinae) of the world, Zoological Journal of the Linnean Society 176 (1), pp. 36-136 : 119-121

publication ID	https://doi.org/ 10.1111/zoj.12311
DOI	https://doi.org/10.5281/zenodo.10543579
persistent identifier	https://treatment.plazi.org/id/142A4050-DE1C-FFAD-91D8-E08DFE6AF9E6
treatment provided by	Marcus
scientific name	Ragwelellus
status

Treatment

RAGWELELLUS ODHIAMBO View in CoL

Figures 9 View Figure 9 , 10J View Figure 10 , 17Q–X View Figure 17 , 21G, H, K–O View Figure 21 , 24 View Figure 24

Ragwelellus Odhiambo, 1962: 314 View in CoL (subgen. nov.; type species Eucerocoris peregrinus Odhiambo, 1962 View in CoL by original designation, jun. syn. of. Eucerocoris vittatus Odhiambo, 1962 View in CoL ); Carvalho, 1976: 54 (disc.); Odhiambo, 1965: 22 (descr., disc., changed status); Schuh, 1995: 523 (cat.); Schuh, 2002 –2013 (cat.); Namyatova & Cassis, 2013a: 101 (disc.); Namyatova & Cassis, 2013b: 706 (disc., phylogeny); Namyatova et al., in press (phylogeny); rev. status, this work.

Ragwelellus (Narinellus) Odhiambo, 1965: 22 (subgen nov.; type species Ragwelellus thetis (Kirkaldy, 1908) View in CoL by original designation); syn. nov., this work.

Diagnosis: Ragwelellus belongs to the Monalonion - complex (see discussion for the tribe), and it is differentiated from other genera of this group by: ASI longer than head and pronotum combined; frons not swollen or only slightly convex ( Fig. 10J View Figure 10 ); forefemora curved; scutellum without spine-like projection; pretarsal claw broadly rounded (fig. 10E in Namyatova & Cassis, 2013b); phallotheca usually more or less rounded or only slightly tapering apically ( Fig. 17Q, U View Figure 17 ).

Redescription: Male: Body length 4–10 mm. COLORA- TION ( Fig. 9 View Figure 9 ). Variable, mostly pale brown, brownish or reddish, often not uniformly colored with head and pronotum at least partly darker than hemelytron or with markings on hemelytron. TEXTURE. Body mostly smooth, without punctures and tubercles; vertex without flattened areas; semicircular depression between scutellum and mesoscutum absent; striations on scutellum laterally absent; only small depression on anterior angle of pronotum present (as in fig. 9H in Namyatova & Cassis, 2013b). VESTITURE. Setae on dorsum and thoracic pleura absent; pale simple setae on sides of head, labium, appendages and abdomen present; setae on sides on head, labium and abdomen mostly adpressed and short, setae on abdomen very rare, present apically only; setae on antenna mostly short, suberect or adpressed, sometimes setae on antenna segment II longer than hind tibia width; setae on femora rare and adpressed, often present apically only; setae on tibiae short, mostly spine-like, suberect, not very dense; apex of tibia and tarsi with adpressed short setae; black spinules on femora absent, spinules on tibiae absent or present only apically. STRUCTURE. Head. Distance between eye and pronotum subequal to half of eye diameter ( Fig. 10J View Figure 10 ); occipital region delimited with depression, sometimes very shallow; longitudinal depression distinct, almost as long as or longer than eye diameter; eyes not stylate, in line with contour of head ( Fig. 10J View Figure 10 ), c. 0.2–0.33× as long as head width; distance between antennal fossa subequal to or slightly longer than antennal fossa diameter; frons straight or only slightly convex ( Fig. 10J View Figure 10 ), without ridges, outgrowths or longitudinal depression; anterior view of head c. 1.4–1.5× wide as high; eye height c. 1.6–2.2× as long as distance between eye and apex of clypeus; antennal fossa oval c. 0.5–0.7× as long as eye height, not raised (as in fig. 6D–F in Namyatova & Cassis, 2013b), its inferior margin placed distinctly above inferior margin of eye; base of clypeus placed slightly below than or near inferior margin of antennal fossa, slightly delimited or not delimited basally with depression; head more or less swollen in lateral view; gula c. 2–3× as long as buccula, convex. Labium. Length varying from slightly surpassing posterior margin of mesosternum to reaching abdominal LSII; LSI c. 2–3× as long as wide; LSII c. 2.5–5× as long as wide, subequal to, slightly shorter or longer than LSI; LSIII c. 3–4× as long as wide, subequal to, slightly shorter or longer than LSI; LSIV c. 6–12× as long as wide, c. 1.5–3× as long as LSIII. Antenna. About 1.5–2× as long as body; ASI c. 2–4× as long as head width, swollen apically (fig. 9I in Namyatova et al., in press); ASII c. 1.1– 1.8× as long as ASI, c. 2–3× as long as head and pronotum combined; ASIII 0.6–0.9× as long as ASII; ASIV c. 0.3–0.5× as long as ASIII; ASII–IV filiform. Thorax. Collar flat or slightly swollen, slightly delimited or not delimited posteriorly; calli separated, slightly swollen or almost flat; depression delimiting calli posteriorly absent; humeral angles of pronotum rounded, not dilated; posterior margin of pronotum straight or slightly concave ( Fig. 10J View Figure 10 ); scutellum flat, obtuse apically; without outgrowths, medial ridge or depression (as in fig. 9H in Namyatova & Cassis, 2013b); metepimeron narrow, c. 2.5–3× as long as wide, with roundish or subrectangular outgrowth (as in Fig. 13A View Figure 13 ); metasternum rounded posteriorly, without medial projection on to abdominal segment II (fig. 17B in Namyatova et al., in press). Hemelytron. Costal margin concave or straight; claval commissure c. 2–3.5× as long as scutellum, curved medially; R + M distinct, reaching posterior margin of corium; medial fracture subparallel to R + M (as in fig. 11G in Namyatova et al., in press); corium without swelling posteriorly; cuneus c. 6–11× as long as wide, c. 1.1–1.4× as long as pronotum (as in fig. 13C in Namyatova et al., in press), medial margin distinctly concave; membrane cell distinctly surpassing apex of cuneus, c. 2–2.5× as long as pronotum, acute apically (as in fig. 13C in Namyatova et al., in press); auxiliary vein absent or short present; distance between cell and apex of membrane c. 0.1–0.2× as long as cell. Legs. Forecoxae separated (as in fig. 17A in Namyatova et al., in press); femora more or less swollen apically (fig. 18A in Namyatova et al., in press), apices as wide as or narrower than eye diameter; femora curved, forefemora sometimes only slightly curved; foretibia longer than head and pronotum combined; additional swellings on tibia absent; segment I of hind tarsus distinctly longer than segment II, segment II and III subequal in length (fig. 19B in Namyatova et al., in press), sometimes segments I and III almost subequal in length and longer than segment II; claw broadly rounded (fig. 10E in Namyatova & Cassis, 2013b); basal teeth short and triangular (as in Fig. 10B View Figure 10 in Namyatova & Cassis, 2013b). Genitalia ( Fig. 17Q–X View Figure 17 ). Genital capsule almost as long as wide or slightly longer than wide, sometimes with outgrowth on left-hand side; ventral wall of genital capsule shortened anteriorly; left paramere r-shaped or only slightly curved, c. 2–3× as long as right paramere; phallobase sclerite of primary gonopore subtriangular or suboval, without outgrowth(s); ductus seminis as long as or slightly longer than phallotheca, with coils, forming wide tube, without sclerotization basally or apically, attached to phallobase on left-hand; sclerotized part of phallotheca broad occupying entire dorsal side or broad basally and tapering apically; phallotheca sometimes with serrate sclerotization basally and with outgrowth on righthand side; endosoma with sclerotized areas, areas of small spicules, serrate spicules or elongate spicules.

Female: Body length 5–10 mm. Coloration, texture, vestiture and structure as in male, but larger in size ( Fig. 7 View Figure 7 ). Genitalia ( Fig. 21G, H, K–O View Figure 21 ). DLP of three types: (1) membranous or partly sclerotized, with membranous or sclerotized ridge medially, sclerotized bands, circle or rings absent; striations present at least on left-hand side; lateral oviducts placed in anterior or posterior part of DLP, slightly or distinctly removed from lateral margins of DLP; spermathecal gland placed on left-hand side at halfway of DLP or near anterior margin medially ( Fig. 21K View Figure 21 ); (2) membranous, with medial sclerotized circle, sometimes with additional sclerites in anterior part; striations present; lateral oviducts placed at halfway of DLP, close to lateral margin of dorsal labiate plat; spermathecal gland placed at midpoint or above midpoint ( Fig. 21N View Figure 21 ); (3) DLP membranous, more or less striated; sclerotized bands present, covered or not covered with membrane; lateral oviducts placed in anterior part or almost at halfway, close to lateral margins of DLP; spermathecal gland placed anteriorly ( Fig. 21G View Figure 21 ).

DLP with distinct tubercles, sometimes with membranous or sclerotized outgrowths posteriorly; base of second valvula slightly or distinctly concave ( Fig. 21H, L, M, O View Figure 21 ); ventral wall membranous or with sclerites around vulva.

Distribution: South-East Asia, Pacific Islands, Australia ( Fig. 24 View Figure 24 ).

Host plants: There is very little information on host plant associations for this genus. Ragwelellus horvathi is recorded from Cordamom sp. ( Zingiberaceae ) ( Carvalho, 1981), R. festivus from Cinchona sp. ( Odhiambo, 1962; Carvalho, 1981) and Ragwelellus suspectus is known from Melaleuca quinquenervia (Cav.) S.T.Blake (Myrtaceae) .