Nilothauma jupau, Pinho & Andersen, 2021

Pinho, Luiz Carlos & Andersen, Trond, 2021, Neotropical Nilothauma Kieffer, 1921 (Diptera, Chironomidae): Key, eleven new species, re-descriptions, new combination and new records, ZooKeys 1033, pp. 81-125 : 81

publication ID

https://dx.doi.org/10.3897/zookeys.1033.60686

publication LSID

lsid:zoobank.org:pub:BEFB015F-4A35-4987-AD10-DFEB7D4F91DD

persistent identifier

https://treatment.plazi.org/id/3F55ECB7-8CFC-4229-B33A-3FD9520A23B0

taxon LSID

lsid:zoobank.org:act:3F55ECB7-8CFC-4229-B33A-3FD9520A23B0

treatment provided by

ZooKeys by Pensoft

scientific name

Nilothauma jupau
status

sp. nov.

Nilothauma jupau sp. nov. Figures 5A-C View Figure 5 , 16A View Figure 16

Type material.

Holotype male, slide-mounted: Brazil, Rondônia, Teixeirópolis, Balneário com Cachoeira, 10°55'20"S, 62°22'34"W, 03.ix.2012, light trap #13, N. Hamada, R. Boldrini, A.S. Fernandes & J.M. Cavalcante leg. (UFSC). Paratype: 1 male, slide-mounted, same data as holotype (INPA).

Etymology.

The specific epithet honours the Jupaú, indigenous people from Rondônia State, Brazilian Amazon. The name is to be regarded as a noun in apposition.

Diagnostic characters.

The male can be distinguished from its congeners by the combination of: tergite IX with thorn and without setose dorsal lobe(s); anal point spatulate; wing with conspicuous dark markings; abdominal tergites II, III, VI, VII and VIII dark brown.

Description.

Male imago (n = 2, unless otherwise stated). Total length 2.04-2.14 mm. Wing length 1.07-1.14 mm. Total length/wing length 1.78-2.01. Wing length/length of profemur 2.03-2.27.

Colouration. Head and thorax brown; legs pale, except for entire fore femur, distal half of mid- and hind femora and distal 1/3 of fore- and hind tibiae with brown pigmentation; abdomen pale, except for brown pigmentation in segments II, III, VI, VII and VIII. Wing membrane with extensive dark markings.

Antenna. AR = 0.28-0.32. Thirteenth flagellomere 115-134 µm long.

Head. Temporal setae 7-8 in single row. Clypeus with 20-24 setae. Tentorium 57-72 µm long, maximum width 15-17 µm. Stipes 95-100 µm long. Palp segment lengths (in µm): 13-14, 30-32, 85-95, 105-117, 115-134. Third palpomere with 2-3 sensilla clavata subapically, longest 14-15 µm. Fifth palpomere/third palpomere 1.21-1.69.

Thorax. Dorsocentrals 6-7 in single row, acrostichals 8-14, prealars 2. Scutellum with 2 setae.

Wing (Fig. 5A View Figure 5 ). VR = 1.63-1.64. Brachiolum with 1 seta, R with 8-10 setae, R1 with 6 setae, R4+5 with 11-15 setae, remaining veins bare.

Legs. Spur of fore tibia 39-49 µm long including 20-25 µm long scale. Mid-tibia with 1 spur, 20-25 µm long; hind tibia with 2 spurs, 20-25 and 23-28 µm long. Combs of mid-tibia 15-20 µm long, of hind tibia 15-20 µm long. Width at apex of fore tibia 44 µm, of mid-tibia 39-44 µm, of hind tibia 47-51 µm. Lengths and proportions of legs as in Table 4 View Table 4 .

Hypopygium (Fig. 5B, C View Figure 5 ). Tergite IX without dorsal lobes, with rounded posterior margin, with 4-5 clustered setae anteriorly to base of anal point and 8-12 weaker setae to each side of anal point. Anal point spatulate, 40-42 µm long, maximum width 7-10 µm. Tergite bands well developed. Laterosternite IX with 2-3 setae, with thorn. Phallapodeme 42-52 µm long; transverse sternapodeme 20-22 µm long. Gonocoxite 70-75 µm long, with longer microtrichia dorsomedially. Inferior volsella slightly curved, 30-32 µm long, 15-18 µm wide medially, with microtrichia and 5-6 simple setae in apical one third. Superior volsella slender, 12-20 µm long, 4-5 µm wide at base, covered with microtrichia and with 2 setae at apex, longest 8-13 µm. Median volsella consisting of small tubercle situated underneath superior volsella, 6-7 µm long, with 2 setae at apex, longest 6-7 µm long. Gonostylus 70-92 µm long, straight. HR = 0.81-1.00. HV = 2.21-3.05.

Female adult and immatures.

Unknown.

Distribution

(Fig. 16A View Figure 16 ). Known from Rondônia State, Brazilian Amazon.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Chironomidae

Genus

Nilothauma