Anchimacheta iodes Walsingham, 1914

Sohn, Jae-Cheon, 2014, A taxonomic review of the Neotropical genus Anchimacheta (Lepidoptera: Urodidae) with descriptions of a new congener and an allied, new genus and species from Sri Lanka, Journal of Natural History 48 (43 - 44), pp. 2617-2631 : 2620-2624

Anchimacheta iodes Walsingham, 1914

( Figures 1A, C and E , 2A , 3A–C , 4A and C , 5A )

Anchimacheta iodes Walsingham, 1914: 323 [TL: Mexico, Guerrero, Amula].

Anchimacheta capnodes Walsingham, 1914: 324 [TL: Mexico, Guerrero, Amula], synonymized by Meyrick (1931: 174).

Anchimacheta tolmetes Walsingham, 1914: 324 [TL: Mexico, Guerrero, Amula], synonymized by Meyrick (1931: 174).

Spiladarcha iodes ; Meyrick, 1931: 174.

Types

Anchimacheta iodes – Lectotype (designated here): 1 ♂, ‘Type | H.T.’ [a circular label with red border], ‘Amula; 6000ft | GUERRERO | MEXICO | VIII. 18 | (H H. Smith) Gdm. Slvn. | 66055’, ‘Walsingham | Collection. | 1910–427’, ‘GENITALIA | Slide No. 77’, ‘ ANCHIMACHETES [sic] | IODES, Wlsm. | Biol. C. Am. Het. IV. 323. 1914 || TYPE ♂. Deser.’ [a label with black margins], ‘ BMNH (E) #819788’, deposited in BMNH. Paralectotypes: 1 ♂, 1 ♀, same collecting data as holotype, type nos. 66056 and 66059, BMNH , [GSN] BM-32033 (♀), 32809 (♂); 1 ♂, same collecting data as holotype, type no. 66060, USNM , [GSN] USNM-83295 , [wing slide no.] USNM-115153 .

Anchimacheta capnodes – Lectotype (designated here): 1 ♂, ‘Type’ [a circular label with red border], ‘Amula; 6000ft | GUERRERO | MEXICO | VIII. 18 | (H H. Smith) Gdm. Slvn. | 66051’, ‘Walsingham | Collection. | 1910–427’, ‘GENITALIA | Slide No. 80’, ‘ Anchimacheta | capnodes Wlsm. | Biol. C. Am. Ins LepHet. 4. p. 323 || TYPE ♂ (1914)’ [a label with black margins], ‘ BMNH (E) #819789’, deposited in BMNH . Paralectotypes: 1 ♀, same collecting locality as holotype, type no. 66052, BMNH ; 1 ♂, same collecting data as holotype, type no. 66053, USNM , [GSN] USNM-83297 ; 1 ♀, same locality as holotype, IX 18, type no. 66054, USNM , [GSN] USNM 83296 .

Anchimacheta tolmetes – Holotype: 1 ♂, ‘Type’ [a circular label with red borders], ‘Amula; 6000ft | GUERRERO | MEXICO | VIII. 18 | (H H. Smith) Gdm. Slvn. | 66050’, ‘Walsingham | Collection. | 1910–427’, ‘GENITALIA | Slide No. 81’, ‘ Anchimacheta | tolmetes Wlsm. | Biol C Am. Ins. Lep. Het. 4. | p. 323. pl.9’27 (1914) || TYPE ♂ ’ [a label with black borders], ‘ BMNH (E) #819790’, deposited in BMNH.

Diagnosis

Anchimacheta iodes is similar to the male of Incawockia castanensis Heppner from Peru in external appearance, but differs from the latter in lacking the anterobasal hair pencils on the male hind wings and in having paler hind wings. In the male genitalia, Anchimacheta iodes possesses an apically bifid uncus and lacks a saccular process. In contrast, I. castanensis possesses an apically undivided uncus and an elongate saccular process. Both species are also distinguished by the number of signa in the female corpus bursae: i.e. one in A. iodes versus six in I. castanensis .

Redescription

Head. Vertex pale brownish grey; frons pale brownish grey, tinged with dark greyish brown laterally. Antennae 1/2 as long as forewing; scape pale brownish grey; flagellomere lustrous dark brownish grey in basal half, brownish white in distal half. Labial palpi slightly ascending; 1st segment pale orange; 2nd segment mostly dark brown, pale orange in ventrobasal 1/3 of inner surface and around distal end; 3rd segment dark brown in basal 2/3, pale orange in distal 1/3.

Thorax. Patagium pale brownish grey, tinged with dark brownish grey basally and laterally. Tegula dark brownish grey, sparsely mottled with pale greyish brown. Mesonotum pale brown, intermixed with dark brownish grey laterally. Foreleg with coxa and femur dark brown on outer surface, pale brownish grey on inner surface; tibia and tarsi dark brownish grey or dark brown; all tarsomeres with a pale brownish grey distal ring. Mid leg with coxa pale brownish grey; femur dark brown, with pale brown area at basal 1/3 and in distal 1/3 of outer surface, entirely pale brownish grey on inner surface; tibia and tarsi dark brown dorsally, pale brownish grey ventrally; all tarsomere with a pale orange distal ring. Hind leg with coxa to tibia dark brownish grey dorsally, narrowly pale brownish grey ventrally; tibia sparsely hairy dorsally; all tarsomeres brownish white, tinged with grey basally. Forewing length 5.2–7.3 mm (n = 3), pale greyish orange, intermixed with dark brownish grey scales; basal area brownish grey; subbasal line arched, dark brown, broadened to costa; antemedian line slightly arched, greyish brown, darkened and broadened to costa; postmedian area mottled with dark brown; subterminal line dark brownish grey; a small, dark brown spot near to tornus; fringe pale greyish yellow in distal 4/5, brownish grey in basal 1/5. Hind wing dark brownish grey; fringe pale yellowish grey.

Abdomen. Tergites brownish grey, intermixed with pale brown scales; sternites pale brownish grey. Male genitalia ( Figure 4A and C ) with uncus quadrate, continuous to tegumen, deeply bifid apically; apical process digitate, setose; lateral setae longer to base of uncus. Tegumen broadly rounded; gnathos ( Figure 4A c ) broadly rounded apically, with band-like arms; medial 1/3 denticulate. Valva elongate, narrowing to apex, apical area (cucullus) digitate, densely setose; costal process slightly longer than valva, arising from base of costa, densely setose, slightly broadened in terminal 1/2, narrowly rounded apically; saccular area with triangular notch on basal 1/3 of upper margin. Vinculum broadly diverging to tegumen. Juxta ( Figure 4A d ) quadrate, upper portion with subtriangular notch medially; lower portion trapezoidal. Saccus absent. Phallus ( Figure 4C ) as long as valva, slightly curved along basal 2/5; coecum along basal 1/3 of phallus, narrowly rounded; ductus ejaculatoris arising from dorsoapical 2/5 of phallus; vesica with dense, minute setae and a bundle of three needlelike cornuti. Female genitalia ( Figure 5A ) with papillae anales semiglobular, slightly protruding apically, sparsely setose, 1.5× broader than antrum. Ovipositor telescopic, 1.3× longer than ductus bursae; apophyses posteriores more slender and 1.7× longer than apophyses anteriores. Ostium bursae as broad as antrum, followed by bowlshaped emargination. Ductus bursae 1.3× longer than corpus bursae, parallel-sided; antrum 1/7 of length of ductus bursae, as long as its width, quadrate, with dense denticules along lower margin; ductus seminalis near to antrum. Corpus bursae narrow, obovate, with dentiform signum ( Figure 5A a ) at middle.

Distribution

Mexico (Guerrero). Notes. In his descriptions of Anchimacheta iodes and A. capnodes, Walsingham (1914) stated that the type series of each species comprise two ‘types’ and two ‘ paratypes.’ Therefore, those two species were described based on syntypes. Nevertheless, the male type specimens of A. iodes (type no. 66055) and A. capnodes (type no. 66051) in the BMNH collection have been regarded as holotypes. To clarify the type series of both species, lectotypes are designated with the specimens erroneously labelled as holotype. For A. iodes, Walsingham (1914) stated that there are two ‘paratypes’ in the USNM collection. Of those, the specimen numbered ‘66061’ cannot be found. In addition, the BMNH collection includes a ‘paratype’ (no. 66059) which Walsingham (1914) did not mention in his description of A. iodes .

Figures

Figure 1. (A) Head of Anchimacheta iodes, male, paralectotype; (B) head of Glaucotunica tamila, male, holotype; (C) hind legs of Anchimacheta iodes, male, paralectotype; (D) hind legs of Glaucotunica tamila, male, holotype; (E) abdominal segment I–III of Anchimacheta iodes, male, paralectotype.

Figure 2. (A) Wing venation of Anchimacheta iodes, male, paralectotype; (B) wing venation of Glaucotunica tamila, male, holotype.

Figure 3. Type specimens. (A) Lectotype of Anchimacheta iodes, male; (B) Lectotype of A. capnodes (= A. iodes), male; (C) holotype of A. tolmetes (= A. iodes), male; (D) paratype of A. costaricae, male; (E) holotype of A. costaricae, female; (F) holotype of Glaucotunica tamila, male.

Figure 4. Male genitalia. (A) Genital capsule of Anchimacheta capnodes (= A. iodes), paralectotype (insets: a, b – right valva; c – medial band of gnathos; d – juxta); (B) right valva of A. costaricae, holotype; (C) phallus of A. capnodes (= A. iodes), paralectotype; (D) phallus of A. costaricae, holotype; (E) genital capsule of Glaucotunica tamila, holotype (insets: e – gnathal arms; f – juxta); (F) phallus of G. tamila, holotype (inset: g – enlarged distal third, transmitted light phase contrast image).

Figure 5. Female genitalia. (A) Anchimacheta capnodes (= A. iodes), paralectotype (insets: a – antrum; d – signum); (B) A. costaricae, paratype (insets: b, c – antrum; e – signum).