Chlorionidea sibillinica, Guglielmino & Bückle, 2010
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publication ID |
https://doi.org/ 10.1080/00222933.2010.512399 |
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persistent identifier |
https://treatment.plazi.org/id/9314C160-745A-3760-FE4F-7D72FB5A2502 |
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treatment provided by |
Felipe |
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scientific name |
Chlorionidea sibillinica |
| status |
sp. nov. |
Chlorionidea sibillinica View in CoL sp. nov.
Description
Very similar to C. flava in shape, proportions, size, colour and markings. Vertex with longer apical cell, in dorsal view in the middle more angularly protruding, in lateral view middle carina of frons at transition to vertex more prominent in relation to rounded lateral carina ( Figure 3C,D View Figure 3 ). Differences from C. flava consist, however, mostly of characters of the male and female genitalia. Until now only brachypterous specimens are known.
Male genitalia ( Figure 2C View Figure 2 ). Pygofer ( Figure 4D,H,I View Figure 4 ) in lateral view with slight angle above inferior third of hind margin; in posterior view with only indistinct sclerotized thickening on ventral margin of aedeagus opening, but with distinct, in its ventral part more elevated median carina between the two foramina, near styles opening forming irregular scabrous crest ( Figure 4I View Figure 4 ); styles opening small, its width at most a third of width of pygofer. Anal tube ( Figure 5E,K View Figure 5 ) with pair of hook-shaped ventrally directed processes, its ventrocaudal margin profoundly excavated. Styles ( Figure 6E View Figure 6 ) without darker or scabrous inner basal margin, apical part short, narrow, not broadened at its tip. Suspensorium ( Figure 6G View Figure 6 ) as in C. bromi , its caudal margin prolonged in short lamella with concave margin. Aedeagus ( Figure 8H–K View Figure 8 ) relatively short, curved in dorsal direction, laterally depressed, its base in lateral view very enlarged, with dorsal crest of teeth continuing onto narrow middle part of aedeagus. Apical portion of aedeagus dorsally abruptly enlarged, with some small spines on its right side, phallotreme on its left side.
Remarks
Anti-symmetry is observed: Some specimens have an aedeagus with phallotreme on the right side.
Female genitalia. Genital scale ( Figure 9E View Figure 9 ) distinct, wider than long, triangular, with straight sides. Gonocoxae VIII ( Figure 9F View Figure 9 ) slender, abruptly narrowed caudally of the basal medially protruding part.
Fifth instar nymph ( Figure 6A View Figure 6 ). General colour white. Dark brown markings between carinae of anterior part of vertex and on last tarsomere. Face light brown except from the middle of postclypeus, on legs in the form of linear markings and on dorsal side as four longitudinal stripes: two near the middle line, narrow, close together and passing more or less continuously from vertex to abdomen tip, other pair near lateral margin, wider, very distinct on pronotum and abdomen, consisting of rather isolated indistinct patches on other parts of body. Vertex with parallel sides, somewhat longer than wide, its apical margin distinctly protruding in the middle. Basal cells longer than wide at their base. Apical part of vertex with two parallel median carinae continuing over complete length of frons. Transition vertex – frons in lateral view subangular. Frons in frontal view with slightly convex lateral margins, postclypeus without carina. Antennae cylindrical, with basal segment short, broader than long, second segment about three times as long as basal segment, twice as long as broad. Pronotum about three-quarters as long as vertex, its lateral dorsal carinae distinctly diverging, directed to posterior margin without attaining it. Meso- and metanotum distinctly longer than pronotum. Both meso- and metanotum with pair of complete straight posteriorly diverging carinae reaching hind margin of their segment.
Sensory pits. Frons/vertex: on each side two sensory pits in distal portion against median carina, two in median portion against lateral carina and two in upper portion against median carina, another one on transition frons to vertex and two on apical part of vertex; four or five sensory pits close together between lateral carina of frons/vertex and eyes; on pronotum: seven sensory pits on each side: two along posterior inner side of dorsal lateral carina, one posterior to that carina, one between carina and lateral margin of pronotum, one on lateral margin of pronotum and two on ventral side beyond lateral margin of pronotum; on mesonotum: five sensory pits on each side: one on inner and one on outer side of dorsal lateral carina, two on forewing pad in pre-apical position, and one on lateral margin of wing pad near its base; on metanotum on each side one sensory pit outside dorsal carina; on abdomen: on fourth tergite on each side one or two lateral sensory pits, on fifth, sixth, seventh and eighth tergites three lateral sensory pits, arranged except for eighth tergite in rather regular transverse lines near posterior margin of tergite; three pairs of sensory pits in addition on ninth segment, one in dorsal, other two in ventral position.
Remarks
The number of sensory pits seems to some degree variable. We studied, in addition, the exuvia of another fifth instar nymph that shows only three or four sensory pits in front of the eyes, one sensory pit on each side of the fourth abdominal tergite and two on each side of the fifth abdominal tergite.
Measurements
Males (brachypterous). Total length: 2.9–3.1 mm; width at level of wings: 1.26– 1.4 mm; width of head including eyes: 0.85–0.95 mm; length of vertex: 0.33–0.37 mm; width of vertex at base: 0.3–0.32 mm; length of pronotum: 0.22–0.24 mm; length of mesonotum from hind margin of pronotum to tip of scutellum: 0.47–0.52 mm; length of forewing: 1.2–1.28 mm; width of forewing: 0.76–0.83 mm; length of hind tibia: 0.85–0.95 mm; length of aedeagus: 0.42–0.43 mm.
Females (brachypterous). Total length: 3.5–3.7 mm; width at level of the wings: 1.42– 1.5 mm; width of head including eyes: 0.85–0.92 mm; length of vertex: 0.37–0.4 mm; width of vertex at base: 0.34–0.35 mm; length of pronotum: 0.25–0.28 mm; length of mesonotum from hind margin of pronotum to tip of scutellum: 0.52–0.55 mm; length of forewing: 1.22–1.3 mm; width of forewing: 0.83–0.89 mm; length of hind tibia: 0.9–0.98 mm.
Fifth instar nymph. Total length: 2.75 mm; width: 1.16 mm; width of head including eyes: 0.78 mm; length of vertex: 0.32 mm; width of vertex at base: 0.3 mm; length of pronotum: 0.23 mm; length of forewing pads: 0.7 mm; length of hindwing pads: 0.52 mm; length of hind tibia: 0.66 mm.
Type series
Holotype. Male: Italy, Marche (Ascoli); Monti Sibillini, Forca di Presta ; ∼ 1600 m; 22 June 2005; mountain pasture; Guglielmino and Bückle leg. (loc. 170).
Paratypes. Same data as holotype; 13 June 2007 (loc. 391); 2 males, 4 females . Same data as holotype; 3 June 2008 (loc. 415); 1 male reared from a collected nymph. Marche (Macerata); Monti Sibillini, road between Casali and Fiastra, 1.2 km north of fork to Forcella di Fargno ; ∼ 1500 m; 10 June 2008; mountain pasture; Guglielmino and Bückle leg. (loc. 429); 5 males, 2 females .
The numbers in parentheses coincide with our locality number system used in our faunistic and zoogeographical papers.
Type material deposited in Dipartimento di Protezione delle Piante , Università della Tuscia, Viterbo, Italy (Guglielmino’s collection) ( CG) .
Geographic distribution
At present Chlorionidea sibillinica is known only from Monti Sibillini ( Figure 1 View Figure 1 : 2), at an altitude between 1500 and 1600 m.
Biology
Adults were collected in June in mountain pastures with Sesleria tenuifolia . Probably univoltine.
Key to species
1. Apex of styles broad, axe-shaped ( Figure 6B,C View Figure 6 ); aedeagus ventrally bent ( Figure 2A View Figure 2 ); genital scale large, longer than wide ( Figure 9A,B View Figure 9 ); gonocoxae VIII wide, at most, slightly concave on their median margin ( Figure 9C View Figure 9 )............................................................................ 2
Apex of styles not broadened, rounded ( Figure 6D,E View Figure 6 ); aedeagus dorsally bent ( Figure 2B,C View Figure 2 ); genital scale small, wider than long ( Figure 9E View Figure 9 ) or lacking; gonocoxae VIII slender, abruptly narrowed caudally of the basal medially protruding part ( Figure 9D,F View Figure 9 ).......................................... 3
2. Anal tube with sclerotized appendages ( Figure 5B,G View Figure 5 ); genital scale very large, its length> 0.3 mm, with ± straight margins and more or less straightly cut tip ( Figure 9B View Figure 9 )...................................... C. apenninica View in CoL sp. nov.
Anal tube without appendages ( Figure 5A,F View Figure 5 ); genital scale smaller, its length <0.3 mm, with concave margins and more or less rounded tip ( Figure 9A View Figure 9 ).................................................................. C. flava View in CoL
3. Anal tube with sclerotized appendages ( Figure 5E,K View Figure 5 ); aedeagus laterally depressed with phallotreme laterally ( Figure 8H–K View Figure 8 ); genital scale present ( Figure 9E View Figure 9 ).......................................... C. sibillinica View in CoL sp. nov.
Anal tube without appendages ( Figure 5C,H View Figure 5 ); aedeagus dorsoventrally depressed with phallotreme ventrally ( Figure 8E–G View Figure 8 ); without genital scale................................................................. C. bromi View in CoL
| CG |
Embrapa Collection of Fungi of Invertebrates |
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