Asthenopus crenulatus
| Notice: | This page is derived from the original publication listed below, whose author(s) should always be credited. Further contributors may edit and improve the content of this page and, consequently, need to be credited as well (see page history). Any assessment of factual correctness requires a careful review of the original article as well as of subsequent contributions.
If you are uncertain whether your planned contribution is correct or not, we suggest that you use the associated discussion page instead of editing the page directly. This page should be cited as follows (rationale):
Citation formats to copy and paste
BibTeX: @article{Molineri2011Zootaxa2750, RIS/ Endnote: TY - JOUR Wikipedia/ Citizendium: <ref name="Molineri2011Zootaxa2750">{{Citation |
Ordo: Ephemeroptera
Familia: Polymitarcyidae
Genus: Asthenopus
Name
Asthenopus crenulatus Molineri, Carlos, 2011 – Wikispecies link – Pensoft Profile
- Asthenopus crenulatus Molineri, Carlos, 2011, Zootaxa 2750: 34-37.
Description
Female subimago (Figs. 8–13). Length (mm): body, 10.2–10.8; fore wing, 11.1; hind wing, 4.3. General coloration yellowish light brown. Head (Figs. 8–9) dorsally blackish except on median zone, paler; venter of head yellowish white. Antennae light yellowish, shaded gray on apex of scape and pedicel. Thorax (Figs. 8–9) yellowish brown with blackish membranes, shaded with brownish gray on pronotum and with black on posteromedian marks on meso- and metanotum. Legs whitish yellow shaded brownish on dorsum. Wings (Figs. 10–11), membrane slightly tinged with light brown, veins brownish; costal and subcostal sector of fore and hind wings, grayish, sometimes apical half of costal and subcostal sector of forewing whitish; forewing with four longitudinal intercalary veins between R 2 and R 3. Abdomen (Figs. 8–9). Terga yellowish shaded with brownish gray; sterna whitish yellow with anteromedial longitudinal brownish line and two reddish brown spots medially; sternum VIII (Fig. 12) with paired anteromedian sockets, sockets small, shallow and contiguous (so in Fig. 13). Terminal filament whitish, shorter than tergum VIII, with 6 thin annuli; cerci yellowish brown paler apically, 0.5–0.6 times the length of the abdomen. Eggs. Length, 221–266 μm; width, 143–152 μm. Slightly oval; yellow with two polar caps on apices, each formed by a long coiled filament; no chorion microsculptures visible at 100 X. Nymphs. Unknown.
Discussion
Remarks. The differences between male imago and subimago are limited to length of forelegs, forceps and cerci. The penes of imago and subimago are similar, allowing the identification in both stages.
Etymology
Etymology. From Latin crenulatus meaning "minutely crenated", because of the remarkable penile structure (Figs. 5–7).
Diagnosis
Diagnosis and discussion.Asthenopus crenulatus sp. nov. can be distinguished from the other species of the genus by the following combination of characters: 1) male foreleg with large and apically widening tibia, first tarsite partially fused to second tarsite, foreleg length 0.7–0.9 times the length of forewing; 2) marginal intercalary veins present on the entire margin of fore and hind wings (Figs. 3 –4, 10– 11), generally shorter than distance between longitudinal veins in male (Figs. 3–4), but longer and anastomosed in female (Figs. 10–11); 3) basal relation of forewing veins IMP-MP 1 variable (IMP joined to MP 1, or basally free); 4) forewing with 3 to 4 crossveins between Rs and MA basal to Rs fork; 5) ratio total length/basal width of forceps 8.5 –9.0 (tl/bw in Fig. 5); 6) penes long and slender, outer apical margin with many small spines (Figs. 6–7).
Materials Examined
Material.Holotype male from BRAZIL: AM 240, Ramal Paulo Freire, Sitio os Pioneiros, Km-05, Presidente Figueiredo, Amazonas, 94 m, 24.iv. 2008, S 2 ° 4 ' 5 " – W 59 ° 54 ' 28.8 ", light trap, N. Hamada col.. Paratypes: 1 male imago and 3 male subimagos same data as holotype; 1 male imago (wings and genitalia on slide), 9 male subimagos, and 4 female subimagos from BRAZIL: AM 240 - Km 21: Sitio da Corredeira Santo Amaro, Presidente Figueiredo, Amazonas, 112 m, 21.iv. 2008, S 2 ° 2 ' 21.4 " – W 59 ° 50 ' 43.9 ", light trap, N. Hamada col.; and 1 male imago (wings and legs on slide) from COLOMBIA-BRAZIL: Reserva Natural Palmarí, río Yavarí, Muelle Centro Administrativo, 120 m, 29.v. 2002, S 4 ° 17 ' 10 " – W 70 ° 17 ' 49 ", light trap, M. C. Zúñiga, D. Emmerich, R. Zúñiga and A. Zúñiga col. The paratype male imago from river Yavarí is deposited in MUSENUV, one male imago and one female subimago (paratypes) from Brazil are deposited in IML, the remaining material (holotype and paratypes) in INPA.
Taxon Treatment
- Molineri, Carlos; Cruz, Paulo Vilela; Emmerich, Daniel; 2011: A new species of Asthenopus (Ephemeroptera: Polymitarcyidae: Asthenopodinae) from Brazil and Colombia, Zootaxa 2750: 34-37. doi
This treatment was originally uploaded by Plazi, compare this treatment on Plazi. Unless this treatment has been substantially changed on Species-ID, Plazi requests to maintain a link back to the original repository.
