Stenoloba albibasis Behounek & Kononenko, 2010

Behounek, G. & Kononenko, V. S., 2010, Fourteen new species of the genus Stenoloba Staudinger, 1892 from South East Asia (Lepidoptera: Noctuidae, Bryophilinae), Zootaxa 2679 (1), pp. 1-31 : 6-7

publication ID	https://doi.org/ 10.11646/zootaxa.2679.1.1
DOI	https://doi.org/10.5281/zenodo.5309133
persistent identifier	https://treatment.plazi.org/id/9B6D2B24-FFB3-FFE7-FF0F-84596535FE7C
treatment provided by	Felipe
scientific name	Stenoloba albibasis Behounek & Kononenko
status	sp. nov.

Treatment

Stenoloba albibasis Behounek & Kononenko sp. n.

( Figs. 7, 8 View FIGURES 1–8 , 36 View FIGURES 33–38 , 59 View FIGURES 55–62 )

Type material. Holotype: male, [ Indonesia] Sumatra, Aek Tarum, Gurung Malayu , 22.i 1984 (E. W. Diehl leg.), genitalia slide 5320 . Paratypes: 1 female, Sumatra, Prov. Simalungen, Prapat, Holzweg 2, 1050 m, 28 km W Siantar, 99°05'O, 1°57'N, 21.iii.1999 (E. W. Diehl leg.) GoogleMaps , genitalia slide GB5644 female; 1 female, same place, and collector, 14.iii 1999; 1 m, same place, 17.viii 1995 (P. Stamer leg.); 1 male, N Sumatra, Prapat HW 2, 18.iv 1985 , 1 female, same place, 14.iii 1999, 1 male, Sumatra, Prov. Simalungen, Prapat, Holzweg 3, 17.viii 1982 , 1 male same place, 10.iii.1983, 1 male, same place, 2.iv 1985, 1 female same place, 6.ii 1982, 1 female same place, 14.x 1982, 1 female, same place, 30.xi 1983, 1 female same place, 18.ii 1993, (all E. W. Diehl leg.); 1 male, same place, 31.i/ 9.ii 1984, (leg. W. Nässig & E. W. Diehl); 1 male Nord Sumatra, vic. Brastagi, Papirpir Bungalow , ca. 1500 m NN 4–7.ii 1984 (leg. W. Nassig / Arbaimun) . The type series is in coll. Behounek, to be deposited to ZSM, Munich, Germany .

Diagnosis. The new species is close to S. elegans , externally differing from the latter by more clear green colour of the forewing and the presence of white suffusion in the basal and subapical areas of forewing. In male genitalia, it differs by shorter vestigial uncus and broader valva, bearing two spines on the tip; vesica less strong in comparison with S. elegans . In female genitalia it differs well by smaller antrum, wider ductus seminalis and by the elongate shape of bursa copulatrix. Together with other Indonesian species it is comprised in a subgroup consisting of S. pendleburyi , S. ansari and S. wolfgangi differing by a vestigial uncus, the absence of the strong cornutus in the vesica and the structure of female genitalia.

Description. Adult ( Figs. 7, 8 View FIGURES 1–8 ). Wingspan: male 20 mm, female, 23–24 mm. Head grey with green, thorax greyish-green, patagia green; thoracic crest not expressed. Ground colour of forewing greyish grassy-green, stronger in costal part, with whitish suffusion in basal, medial and subterminal areas. Basal field marked by green on costal area, with distinct black basal streak; subbasal field white, with brown patch along ventral margin and green along antemedial line; antemedial line blackish, thin; medial field with brown patch between ante- and postmedial lines along ventral margin, green in costal and central areas, with wide white suffusion from central part, continuing to apex; orbicular reduced, traceable as small blackish dot; reniform traceable as blackish dot or two streaks on whitish background; postmedial line thin, finely dentate, arched outward, blackish, surrounded with white; subterminal and terminal fields hardly separated by indistinct diffuse whitish line, greenish with grey, with intensive white suffusion along costa to apex, with clear greyishgreen subapical streak and four blackish streaks along costa; terminal line as row of blackish streaks; cilia brownish-grey. Hindwing brownish-grey, darker to outer margin, with traceable discal spot; cilia brownishgrey, basally yellowish.

Male genitalia ( Fig. 36 View FIGURES 33–38 ). Uncus vestigial, strongly reduced to very small extension, smaller than in S. elegans ; tegumen and vinculum thin, tegumen about 1.5 times higher than vinculum; juxta shield-like, transtilla well developed, with large sclerotized plates. Valva somewhat broader and massive, especially apically, in comparison with S. elegans , gradually tapered apically, bearing two strong spines on apex; aedeagus more massive than in S. elegans , vesica weaker, membranous, without fine scobination as in S. elegans .

Female genitalia ( Fig. 59 View FIGURES 55–62 ). Ovipositor rather short; papillae anales quadrangular, anterior and posterior short apophyses, equal in length; antrum rather short, about half of length of those of S. elegans , with Yshaped sclerotized antevaginal plate; ductus bursae broad, longer than in S. elegans , without sclerotized ring; bursa copulatrix much longer than in S. elegans , sack-like; cervix bursae much shorter than in S. elegans .

Distribution. ( Fig. 75 View FIGURES 72–78 ). Indonesia, Sumatra. The species is rather common in mountain zones at an elevation of 1000–1400 m. Several generations, probably throughout the year.

Etymology. The species name is derived from the characteristic whitish patch at the base of forewing.