Aphanogmus cecidovorus Ranjith, 2023
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publication ID |
https://doi.org/ 10.1080/00222933.2023.2279237 |
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DOI |
https://doi.org/10.5281/zenodo.10479612 |
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persistent identifier |
https://treatment.plazi.org/id/03EA8794-FFEC-FFE0-4285-FBA6FC77F94E |
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treatment provided by |
Plazi |
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scientific name |
Aphanogmus cecidovorus Ranjith |
| status |
sp. nov. |
Aphanogmus cecidovorus Ranjith sp. n.
( Figures 2–3 View Figure 2 View Figure 3 )
Type material
Holotype, female, INDIA: Kerala, Malappuram, Calicut University Campus , collected 5 March 2023, emerged 15 March 2023, from leaf galls of Pongamia pinnata induced by Aceria pongamiae , coll. B. Niveditha and S.V. Ayiswarya. Paratypes, 3 females with same data as holotype ( AIMB).
Description
FEMALE. Body length 0.8 mm, forewing 0.4 mm.
Head
Head 1.6 × as wide as long in dorsal view ( Figure 2D View Figure 2 ), 1.2 × as wide as mesosoma ( Figure 2B View Figure 2 ); POL: OOL: LOL = 3.5: 1.0: 2.0. Head 1.1 × as wide as high in frontal view ( Figure 2C View Figure 2 ); malar space 0.6 × as long as eye height; lateral margin of torulus distinctly raised ( Figure 2C View Figure 2 ); intertorular carina indistinct ( Figure 2C View Figure 2 ); frontal depression granulate ( Figure 2D View Figure 2 ); ocellar foveae present ( Figure 2D View Figure 2 ); preocellar pit present ( Figure 2D View Figure 2 ); facial pit absent ( Figure 2D View Figure 2 ); preoccipital furrow present and extending from anterior ocellus to occipital foramen ( Figure 2B View Figure 2 ); preoccipital carina present ( Figure 2B,F View Figure 2 ); preoccipital lunula present ( Figure 2B,F View Figure 2 ); occipital carina present ( Figure 2B,F View Figure 2 ); occipital depression absent ( Figure 2B,F View Figure 2 ); occiput faintly sculptured ( Figure 2B,F View Figure 2 ). Antenna 10-merous ( Figure 2E View Figure 2 ); scape about 0.7 × as long as height of head, as long as distance between inner orbits; pedicel 2.5 × as long as flagellomere 1; the following flagellomeres gradually widened ( Figure 2E View Figure 2 ); flagellomere 7 about 4.0 × as wide as flagellomere 1; club 1 merous ( Figure 2E View Figure 2 ). Mesosoma
Mesosoma 1.1 × as long as wide ( Figure 2A View Figure 2 ); 1.3 × as high as wide; ventral pronotal pit indistinct ( Figures 2A View Figure 2 and 3A View Figure 3 ); mesoscutum granulate, sparsely setose ( Figure 2B,F View Figure 2 ); setal base slightly pustulate ( Figure 2B,F View Figure 2 ); median mesoscutal sulcus indistinct to absent ( Figure 2B,F View Figure 2 ); notaulus absent ( Figure 2B,F View Figure 2 ); parapsidal line absent ( Figure 2B,F View Figure 2 ); interaxillar sulcus indistinct ( Figure 2B,F View Figure 2 ); mesoscutal humeral sulcus distinct. Scutoscutellar sulcus straight, shallow, continuous with interaxillar sulcus ( Figure 2B,F View Figure 2 ); dorsal axillar area and mesoscutellum sculptured as mesoscutum, with distinct lateral carina that connects posterior mesoscutellar sulcus ( Figures 2B,F View Figure 2 and 3C View Figure 3 ); mesoscutellum 1.3 × as long as wide ( Figure 2B,F View Figure 2 ); anterior mesopleural sulcus distinct ( Figures 2A View Figure 2 and 3A View Figure 3 ); mesopleural area finely reticulate anteriorly with several setae ( Figures 2A View Figure 2 and 3A View Figure 3 ); dorsal mesometapleural carina slightly curved ( Figures 2A View Figure 2 and 3A View Figure 3 ); intersection of anterior mesopleural sulcus and dorsal mesometapleural carina forms obtuse angle ( Figures 2A View Figure 2 and 3A View Figure 3 ); metapleural carina distinct, extends near dorsal mesometapleural carina ( Figures 2A View Figure 2 and 3A View Figure 3 ).
Wings
Forewing about 2.7 × as long as wide, with a darkly pigmented band central two-third ( Figure 3D View Figure 3 ); radial vein 1.8 × as long as marginal vein ( Figure 3D View Figure 3 ).
Legs
Metacoxa bare dorsally ( Figure 3A View Figure 3 ); longitudinal metacoxal carina present at base ( Figure 3A View Figure 3 ); meta femur 2.5 × as long as wide.
Metasoma
Syntergum with distinct transverse carina anteriorly, as long as wide, smooth, occupying 0.6 × total length of metasoma ( Figures 2B,F View Figure 2 and 3C View Figure 3 ); syntergum with short longitudinal striae ( Figures 2B,F View Figure 2 and 3C View Figure 3 ).
Colour
Body yellow except scape, basal flagellomeres, mesoscutum, mesoscutellum, forewing medially, syntergum subposteriorly brown.
Male
Unknown.
Distribution
India (Kerala).
Biology
Reared from Microdiplosis pongamiae Mani , which feeds on the gall mite Aceria pongamiae Kieffer.
Etymology
The species is named after the peculiar host association as it parasitises the cecidomyiid which feeds on the gall-inducing mites.
Comparative diagnosis
This new species belongs to the tenuicornis (sensu Evans et al. 2005) species group in having the mesoscutum without a median sulcus, and the metasoma with a basal transverse carina. Currently, there are only three species known to be associated with acariphagous cecidomyiids ( A. floridanus , A. fulmeki and A. flavigastris ). Among these, only A. floridanus , which also belongs to the tenuicornis species group, shows some resemblance to A. cecidovorus sp. n. Based on the character combination of the tenuicornis species group, we can exclude the other two species. Furthermore, the new species can be distinguished from A. fulmeki and A. flavigastris , by its distinct body colour pattern. In addition to the differences in general body colour, and colour of antennae and legs, the new species can be distinguished from A. floridanus from the positioning of the transverse band on the forewing, which extends from subbasally to the basal half of the radial vein (transverse band present before marginal vein in A. floridanus ); the distinctly curved radial vein (straight in A. floridanus ), which is 1.8 × as long as the marginal vein (1.5 × in A. floridanus ); and metasoma 1.4 × as long as mesosoma (metasoma not longer than mesosoma in A. floridanus ).
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