Dirrhope albobasalis Liu & Polaszek, 2025
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publication ID |
https://doi.org/10.3897/zookeys.1259.172473 |
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publication LSID |
lsid:zoobank.org:pub:E2D8DA2C-F205-4DC9-89AB-C892A22B5BA9 |
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DOI |
https://doi.org/10.5281/zenodo.17594020 |
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persistent identifier |
https://treatment.plazi.org/id/2F3DFD1B-1A18-5600-9C5F-A57501111DBE |
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treatment provided by |
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scientific name |
Dirrhope albobasalis Liu & Polaszek |
| status |
sp. nov. |
Dirrhope albobasalis Liu & Polaszek sp. nov.
Fig. 1 View Figure 1
Diagnosis.
Body length 1.7 mm, mesosoma brown, head yellow-brown to black on stemmaticum, and metasoma white to light brown (Fig. 1 a View Figure 1 ); eyes (Fig. 1 b View Figure 1 ) 1.3 × longer than temple in dorsal view; vertex and frons with numerous transverse curved carinae; temple weakly coarsely rugose, distinctly bulging behind eyes in dorsal view; POL: OD: OOL = 1.4: 1.0: 2.9; median carina on face distinctly loop-shaped at end; face (Fig. 1 c View Figure 1 ) weakly strigose mostly, 1.4 × wider than high; antenna (Fig. 1 d View Figure 1 ) distinctly longer than body length, 20 - merous, with penultimate flagellomere 1.4 × longer than wide, closely articulated; mesoscutum (Fig. 1 h View Figure 1 ) with punctures confluent to strigose posteriorly, notauli distinct at anterior declivity, absent posteriorly; scutellar sulcus wide with ill-defined carinae inside; scutellar hind depressions large and oblong; propodeum (Fig. 1 e View Figure 1 ) with midlongitudinal carina half the length of its apical bifurcated carina, sublateral cells present; mesopleuron (Fig. 1 f View Figure 1 ) weakly rugulose medially and rugose above; pterostigma (Fig. 1 g View Figure 1 ) 3.0 × as long as its maximum width; vein 1 - R 1 0.8 × length of pterostigma; vein r 0.6 × of maximum width of pterostigma, 0.5 × 2 - SR; sclerotised part of 3 - SR 0.7 × as long as r; vein m-cu 1.3 × as long as 2 - SR + M; hind femur 2.8 × as long as its maximum width; inner spur of hind tibia half as long as hind basitarsus; T 1 narrow, smooth, hardly visible in dorsal view; T 2 and following tergites weakly sclerotised, smooth (Fig. 1 i View Figure 1 ).
Description.
Male. Body length 1.7 mm, fore wing length 1.4 mm (Fig. 1 a View Figure 1 ).
Head. 1.9 × as wide as long, 1.1 × wider than mesoscutum. Eyes 1.3 × longer than temple in dorsal view (Fig. 1 b View Figure 1 ). Vertex and frons slightly shiny with numerous transversely curved carinae. Temple weakly coarsely rugose, distinctly bulging behind eyes in dorsal view. Ocelli small, distance between fore and a hind ocellus 1.2 × longer than minor axis of a hind ocellus, POL: OD: OOL = 1.4: 1.0: 2.9. Frons flat with a weak median carina passing between antenna sockets to middle of face, carina distinctly loop-shaped at end. Face (Fig. 1 c View Figure 1 ) shiny, strigose, transverse, 1.4 × wider than high. Clypeus 1.8 × wider than medial length, weakly rugulose laterally. Length of malar space 0.8 × width of mandible. Antenna (Fig. 1 d View Figure 1 ) distinctly longer than body length, 20 - merous, with scape, pedicel and 1 st, 2 nd, penultimate and ultimate flagellomeres 1.8, 1.3, 2.3, 2.2, 1.4 and 1.9 × longer than wide, 1 st indistinctly longer than 2 nd, flagellomeres gradually shortened to penultimate flagellomere, closely articulated.
Mesosoma. Length: width: height = 1.4: 1.0: 1.0. Mesoscutum (Fig. 1 h View Figure 1 ) shiny, with even punctures anteriorly which are confluent to strigose posteriorly, notauli distinct at anterior declivity, absent posteriorly. Scutellar sulcus wide with ill-defined carinae inside. Scutellum shiny, rugulose-punctate, hind depressions large and oblong, separated by a carina. Propodeum (Fig. 1 e View Figure 1 ) less shiny, basally shallowly punctate with one midlongitudinal carina half the length of its apical bifurcated carina, a broad pentagonal areola present posteriorly, sublateral cells attached to areola anterior-laterally, remaining parts uneven. Mesopleuron (Fig. 1 f View Figure 1 ) shiny, weakly rugulose medially and rugose above. Prepectal carina distinct.
Wings. Fore wing (Fig. 1 g View Figure 1 ): pterostigma wide, 3.0 × as long as its maximum width; vein 1 - R 1 0.8 length of pterostigma; vein r arising from middle of pterostigma, 0.6 × of maximum width of pterostigma, 0.5 × 2 - SR; sclerotised part of 3 - SR 0.7 × as long as r; vein m-cu 1.3 × as long as 2 - SR + M, 0.4 × 2 - SR; vein 1 - CU 1 about as long as cu-a. Hind wing (Fig. 1 g View Figure 1 ): vein M + CU: 1 - M: r-m = 3.1: 2.0: 1.0.
Legs. Hind femur 2.8 × as long as its maximum width. Hind tibia distinctly widened apically, its length 3.5 × maximum width, as long as hind femur. Inner spur of hind tibia half the length of hind basitarsus. Hind basitarsus 0.7 × as long as tarsomeres 2–5.
Metasoma. 0.8 × length of mesosoma. T 1 (Fig. 1 i View Figure 1 ) narrow, smooth, hardly visible in dorsal view. T 2 and following tergites distinctly desclerotised, smooth, suture between T 2 and T 3 indistinct. Hypopygium not exceeding apex of metasoma.
Colour. Mesosoma brown, head yellow-brown to slightly black on stemmaticum and metasoma white to light brown (Fig. 1 a View Figure 1 ). Palpi and spurs white. Antenna brown except scape and pedicel yellow-brown, first three to four flagellomeres white. Legs pale yellow basally to brown on apical 2 / 3 of hind tibia and most part of tarsi. Wing membranes hyaline, fore wing with pterostigma brown, all veins pale brown.
Female. Unknown.
Host. Unknown.
Material examined.
Holotype: • 1 ♂, Madagascar, Tulear Berenty 12 km , NW Amboasary , JS Noyes, MC Day, 5–15.V.1983, B. M. 1983-201, No. NHMUK 010639460 About NHMUK .
Distribution.
Madagascar.
Etymology.
The specific name “ albobasalis ” refers to the white basal three to four flagellomeres. Noun in apposition.
Remarks.
This species is similar to D. rufa Foerster but differs in the following: penultimate flagellomere 1.4 × longer than wide (subcuboid to cubic in D. rufa ); punctures on the mesoscutum confluent to strigose posteriorly (not confluent in D. rufa ); and midlongitudinal carina half the length of its apical bifurcated carina on the propodeum (distinctly longer than its apical bifurcated carina in D. rufa ).
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.
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