Nilothauma txukuyana, Pinho & Andersen, 2021
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publication ID |
https://dx.doi.org/10.3897/zookeys.1033.60686 |
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publication LSID |
lsid:zoobank.org:pub:BEFB015F-4A35-4987-AD10-DFEB7D4F91DD |
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persistent identifier |
https://treatment.plazi.org/id/8D8DBE02-E551-48F2-AFD8-DFF0B4263FCE |
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taxon LSID |
lsid:zoobank.org:act:8D8DBE02-E551-48F2-AFD8-DFF0B4263FCE |
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treatment provided by |
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scientific name |
Nilothauma txukuyana |
| status |
sp. nov. |
Nilothauma txukuyana sp. nov. Figures 13A, B View Figure 13 , 16B View Figure 16
Type material.
Holotype male, slide-mounted: Brazil, Pará, Rio Paru do Oeste, Malloca Apicó, 20.iv.1962, at light, E.J. Fittkau leg. (A 366-1, ZSM). Paratypes: 15 males, same data as holotype (ZSM, ZMBN, UFSC).
Etymology.
The specific epithet honours the Txukuyana, indigenous people from Amazonas and Pará States in Brazil and from Suriname. The name is to be regarded as a noun in apposition.
Diagnostic characters.
The male can be distinguished from its congeners by having tergite IX with broadly-rounded posterior margin without anal point, with dorsolateral lobes with few, strong setae and posteriolateral, strongly setose, subtriangular projection.
Description.
Male imago (n = 5-8). Total length 2.17-2.44, 2.25 mm. Wing length 1.00-1.09, 1.05 mm. Total length/wing length 2.02-2.33, 2.16. Wing length/length of profemur 2.16-2.26, 2.21.
Colouration. Head, thorax and legs brown; abdomen light brown. Wing membrane without dark markings.
Antenna. AR = 0.26-0.29, 0.28. Thirteenth flagellomere 132-156, 145 µm long.
Head. Temporal setae 6-10, 7 in single row. Clypeus with 13-16, 15 setae. Tentorium 69-83, 77 µm long, maximum width 14-19, 19 µm. Stipes not measurable. Palp segment lengths (in µm): 18-25, 21; 23-28, 26; 56-60, 57; 76-81, 79; 102-115, 107. Third palpomere with 2 sensilla clavata subapically, longest about 15 µm long. Fifth palpomere/third palpomere 1.72-1.98, 1.85.
Thorax. Dorsocentrals 4-7, 6 in single row, acrostichals apparently 4-6, 5 anterior, prealars 1-2, 2. Scutellum with 2 setae.
Wing. VR = 1.44-1.54, 1.50. Brachiolum with 1 seta, R with 7-9, 8 setae, R1 with 5-8, 7 setae, R4+5 with 9-13, 11 setae apically, remaining veins bare.
Legs. Spur of fore tibia 48-54, 52 µm long including 20-25, 22 µm long scale. Mid-tibia with 1 spur, 29-35, 32 µm long; hind tibia with 2 spurs, 22-28, 25 and 33-39, 36 µm long. Combs of mid-tibia 17-18, 18 µm long, of hind tibia 19-22, 21 µm long. Width at apex of fore tibia 33-37, 35 µm, of mid-tibia 33-38, 36 µm, of hind tibia 39-41, 40 µm. Lengths and proportions of legs as in Table 11 View Table 11 .
Hypopygium (Fig. 13A, B View Figure 13 ). Tergite IX with rounded posterior margin with 4-7, 5 marginal setae; with dorsolateral lobes with 3-4, 4 strong setae, longest setae 44-55, 50 µm long; with posteriolateral subtriangular, strongly setose projection, 35-41, 38 µm long, 22-25, 24 µm wide at base. Tergite band not apparent. Laterosternite IX with single setae. Phallapodeme 47-55, 49 µm long; transverse sternapodeme 17-19, 18 µm long. Gonocoxite 83-89, 87 µm long. Inferior volsella digitiform, curved, 62-72, 67 µm long, 11-14, 12 µm wide medially, with microtrichia and 13-17, 15 setae subapically. Superior volsella 25-29, 27 µm long, 8-11, 10 µm wide at base, 7-10, 9 µm wide medially, covered with microtrichia and with marginal setae. Median volsella small, broadly triangular, apparently without setae. Gonostylus nearly straight, 126-135, 130 µm long, 17-19, 18 µm wide medially. HR = 0.65-0.68, 0.66. HV = 1.78-1.87, 1.82.
Female imago and immatures.
Unknown.
Distribution
(Fig. 16B View Figure 16 ). Known from Pará State, Brazil.
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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