Nemophora biprocessa Sun, Wang et Li, 2022

Sun, Hao, Wang, Shuxia & Li, Houhun, 2022, Review of the degeerella species group of the genus Nemophora Hoffmannsegg 1798 (Lepidoptera: Adelidae) from China, Zootaxa 5219 (4), pp. 301-338 : 307-309

Nemophora biprocessa Sun, Wang et Li , sp. nov.

( Figs 6 , 31 )

urn:lsid:zoobank.org:act:A95443B9-46C0-4C2F-A1A0-052C57D2DDFD

Type material. CHINA, Jiangsu: Holotype ♂, Mt. Baohua , 30.IV.2011, leg. HT Song, slide No. SH 20200.

Diagnosis. The new species is similar to N. chalybeella ( Bremer, 1864) and N. lapikella Kozlov, 1997 in the forewing pattern and in the male genitalia. It can be distinguished by the triangular median process of the transtilla, the phallus with two equally narrow processes and a banded process, and without sclerotized belts. In N. chalybeella and N. lapikella , the median process of the transtilla is spiniform, the phallus has sclerotized belts and lacks a process. It can be further distinguished from N. chalybeella by the triangular uncus and the valva sinuate from basal 1/4 to middle on the ventral margin; in N. chalybeella , the uncus is dome-shaped and the ventral margin of the valva is vertically straight from basal 1/4 to middle. It can be further distinguished from N. lapikella by the forewing without a black speckle at the base, which is present in N. lapikella .

Description. Adult ( Fig. 6 ). Male wingspan 21.0 mm.

Head: Vertex yellow; frons purplish bronzy. Eye interocular index 0.58. Proboscis brown. Labial palpus 1.2 × vertical eye diameter; first and second palpomeres yellow; third palpomere brown. Antenna 3.1 × length of forewing; scape dark brown; flagellum yellowish brown except dark brown in distal 1/6.

Thorax: Mesonotum brownish yellow except pale yellow laterally; tegula purplish bronzy. Forewing ground color yellow from base to inner fascia, distal 1/3 grayish brown; four grayish brown streaks: first streak from base narrowed to 2/5 along costal margin, edged with black scales, second streak from base to 2/3 of cell along posterior margin, third streak from near base to near 2/5 of wing along 1A+2A, fourth streak from base to middle along dorsum; with three black lines: first line from base to 2/5 of wing along R 1, second line from base to 3/4 of cell along anterior margin, third line from near base to 1/3 of wing along CuP; inner and outer fasciae grayish brown, inner fascia curved outward and slightly narrowed medially, outer fascia slightly bent inward medially, extended outward anteriorly and posteriorly, medial fascia yellow, narrowed medially; longitudinal yellow stripes radiating from beyond outer fascia to near apex along veins, tinged with black scales; fringe dark brown. Hindwing brown except pale yellow between costal margin and Rs; fringe brown. Foreleg yellow ventrally, brown dorsally except tarsus yellow; midleg yellow except tibia purplish bronzy dorsally; hindleg lost. Epiphysis brown, at middle of tibia, not reaching apex of tibia.

Abdomen: Dark brown.

Male genitalia ( Fig. 31 ). Socius ovoid, length 1.5 × width. Tegumen without median ridge. Uncus triangular, concave anteromedially, rounded posteriorly. Valva fused for basal 1/5, narrowly rounded at apex, almost straight on costal margin, sinuate on ventral margin; sacculus reaching basal 2/5 of ventral margin. Transtilla with a large triangular anterior emargination, triangularly produced anterolaterally; median process triangular, apically reaching posterior 1/3 of tegumen. Vinculum 2.7 × length of valva, broadly rounded anteriorly. Phallus 1.2 × length of vinculum, with two equally narrow processes arising from distal 1/4, 0.11× length of phallus, swollen in distal half; a banded process arising from distal 1/10, 0.14 × length of phallus, swollen in distal 2/5, exceeding apex of phallus apically; vesica with denticles ( Fig. 31a ). Juxta 0.46 × length of phallus; lateral arm of arrow head 0.21 × length of arrow head.

Female unknown.

Distribution. China (Jiangsu).

Etymology. The specific epithet is derived from the Latin bi- and processus, referring to the two equally narrow processes of the phallus.

Figures

FIGURES 1‒6. Adults of Nemophora spp. 1, N. amatella, ♂; 2, N. amatella, ♀; 3, N. apiciprocessa sp. nov., holotype, ♂; 4, N. augites, ♂; 5, N. bifurcifascia sp. nov., holotype, ♂; 6, N. biprocessa sp. nov., holotype, ♂. Scales= 5.0 mm.

FIGURES 27‒32. Male genitalia of Nemophora spp. 27, N. amatella, slide No. SH20300; 28, N. apiciprocessa sp. nov., holotype, slide No. SH20202; 29, N. augites, slide No. SH20328; 30, N. bifurcifascia sp. nov., holotype, slide No.SH20235; 31, N. biprocessa sp. nov., holotype, slide No. SH20200; 32, N. borealis sp. nov., holotype, slide No. SH20012; 27a − 32a, enlarged distal part of phallus. Scales= 0.2 mm, 27a‒32a= 0.1 mm.