Stigmella pyramidata Diškus & Navickaitė, 2020

Stonis, Jonas R., Remeikis, Andrius, Diškus, Arūnas & Navickaitė, Asta, 2020, Documenting new and little known leaf-mining Nepticulidae from middle and southwestern areas of the Asian continent, Zootaxa 4881 (3), pp. 401-452 : 408

publication ID	https://doi.org/ 10.11646/zootaxa.4881.3.1
publication LSID	lsid:zoobank.org:pub:7AAE442F-779B-40C6-ABD9-04BCB3B4777B
DOI	https://doi.org/10.5281/zenodo.4333321
persistent identifier	https://treatment.plazi.org/id/673A3FBA-3438-4EA7-9DB6-A29D9E17B680
taxon LSID	lsid:zoobank.org:act:673A3FBA-3438-4EA7-9DB6-A29D9E17B680
treatment provided by	Plazi
scientific name	Stigmella pyramidata Diškus & Navickaitė
status	sp. nov.

Treatment

Stigmella pyramidata Diškus & Navickaitė , sp. nov.

( Figs 5 View FIGURES 1–6 , 11–13 View FIGURES 7–15 , 109–112 View FIGURES 109–112 )

urn:lsid:zoobank.org:act:673A3FBA-3438-4EA7-9DB6-A29D9E17B680

Type material. Holotype: ♂, India, Uttarakhand, Dehradun Distr., Mussoorie , 30°27’33”N, 78°01’43”E, elevation ca. 1980 m, larva on Ototropis sp., 16.viii.2010, A. Diškus and A. Navickaitė, genitalia slide no. AD494 ( ZIN). GoogleMaps

Diagnosis. In the male genitalia, the unique, pyramid-like gnathos ( Figs 111, 112 View FIGURES 109–112 ) and unique phallus with a large, lobe-like cornutus and a compact cluster of contorted cornuti ( Fig. 109 View FIGURES 109–112 ) distinguish S. pyramidata sp. nov. from all known Stigmella species.

Male. Known from adult in pupal exuvia; only genitalia are preserved and desribed.

Genitalia ( Figs 109–112 View FIGURES 109–112 ) with capsule 230 µm long, 155 µm wide. Vinculum with large lateral lobes ( Fig. 109 View FIGURES 109–112 ). Uncus large, undivided, distally rounded or truncated ( Fig. 111 View FIGURES 109–112 ). Gnathos pyramid-shaped ( Figs 109, 112 View FIGURES 109–112 ), with two caudal processes and transverse bar ( Fig. 111 View FIGURES 109–112 ). Valva ( Fig. 110 View FIGURES 109–112 ) 120 µm long, contricted in apical half. Transtilla with wide, triangular sublateral processes ( Fig. 112 View FIGURES 109–112 ). Phallus ( Figs 109, 112 View FIGURES 109–112 ) 150–170 µm long, pointed apically, with a large, lobe-like carina ( Figs 109, 110 View FIGURES 109–112 ); vesica with a compact cluster of large cornuti ( Figs 109, 112 View FIGURES 109–112 ).

Female. Unknown.

Bionomics ( Figs 5 View FIGURES 1–6 , 11–13 View FIGURES 7–15 ). Host plant is Ototropis Nees , Fabaceae ( Fig. 5 View FIGURES 1–6 ). Larvae mine in leaves in August and, judging from observed old (empty) leaf mines, in July. Larva pale green, with a bright green intestine and pale brown head ( Fig. 13 View FIGURES 7–15 ). The mine is a sinuous gallery, with a thin line of black frass ( Figs 11, 12 View FIGURES 7–15 ). Cocoon yellowish beige, oval-shaped, 2.0 mm long, 1.0 mm wide. Adults occur in August.

Distribution. Known from a single locality in the western Himalaya (Uttarakhand: Mussoorie), at the elevation of about 2000 m ( Fig. 1 View FIGURES 1–6 : wHi).

Etymology. The species name is derived from Latin pyramidatus (pyramid-like), in reference to the unique, pyramid-like gnathos in the male genitalia.