Macrosaccus morrisella (Fitch) Davis, Donald R. & De Prins, Jurate, 2011

Davis, Donald R. & De Prins, Jurate, 2011, Systematics and biology of the new genus Macrosaccus with descriptions of two new species (Lepidoptera, Gracillariidae), ZooKeys 98, pp. 29-82 : 47-51

Macrosaccus morrisella (Fitch) comb. n. Figs 1541 –4418– 22Tables 12

Argyromiges morrisella Fitch 1859: 838, No. 336.

Lithocolletis morrisella (Fitch).- Chambers 1871: 183.- Walsingham 1889: 52.- Riley 1891: 109, No. 5874.- Dyar 1902 [1903]: 551, No. 6269.- Braun 1908: 291.- Meyrick 1912a: 7; 1912b: 33.- Braun 1914: 110.- McDunnough 1939: 95, No. 9189.

Phyllonorycter morrisella (Fitch).- Ely 1918: 58.- Davis 1983: 10.- Maier and Davis 1989: 15.- De Prins and De Prins 2005: 323.- De Prins and De Prins 2011.

Lithocolletis texanella Zeller 1875: 349.- Frey and Boll 1878: 275.- Walsingham 1889: 52 (synonym of Phyllonorycter morrisella (Fitch))- Riley 1891: 109, No. 5874.- Dyar 1902 [1903]: 551, No. 6269.- Braun 1908: 291.- Meyrick 1912a: 7; 1912b: 33.- Braun 1914: 110.- Ely 1918: 59.- Forbes 1923: 192.- McDunnough 1939: 95, No. 9189.- Davis 1983: 10.- Maier and Davis 1989: 15.- De Prins and De Prins 2005: 323.- De Prins and De Prins 2011.

Lithocolletis texana ( Chambers 1877: 137) [misspelling].- Davis 1983: 10.

Lithocolletis amphicarpeaeella Chambers 1877: 137.- Riley 1891: 109, No. 5874 (synonym of Phyllonorycter morrisella (Fitch))- Dyar 1902 [1903]: 551, No. 6269.- Braun 1908: 291.- Meyrick 1912a: 7; 1912b: 33.- Ely 1918: 59.- McDunnough 1939: 95, No. 9189.- Davis 1983: 10.- De Prins and De Prins 2005: 323.- De Prins and De Prins 2011.

Lithocolletis amphicarpaeella Riley 1891: 109, no. 5874 [misspelling].- Braun 1908: 291.- Davis 1983: 10.

Diagnosis.

The forewing pattern of this species differs from that of Macrosaccus robiniella and Macrosaccus neomexicanus in possessing a more distinct basal white streak, in having the dorsal strigulae oriented less obliquely, and with the basal white dorsal stigula more pronounced, and from Macrosaccus gliricidius by the darker ground colour. The forewing pattern most resembles that of Macrosaccus uhlerella but differs in the more pronounced basal white streak which is absent or barely evident in Macrosaccus uhlerella . The male genitalia are most similar to that of Macrosaccus robiniella , particularly with regard to the more abruptly constricted apical third of the valva. The female genitalia differ from the latter in lacking the minute longitudinally oriented striae and spicules in the walls of the corpus bursae.

Adult

(Fig. 5). Forewing length 2.3-2.8 mm.

Head: Vestiture of head and antenna similar to Macrosaccus robiniella .

Thorax: Dark brown to fuscous dorsally, sometimes with a coppery to purplish luster; shiny white ventrally; tegula dark brown, with white suffusion anteriorly. Forewing pattern similar to Macrosaccus robiniella except basal two costal strigulae less oblique; a slender white, slightly oblique streak usually well developed extending distad from tegula at base of wing to sometimes as far as first dorsal strigula; 3 white dorsal strigulae usually present, but these oriented less obliquely than in Macrosaccus robiniella ; basal strigula white, but sometimes obscure; median strigula connected to second costal strigula to form a narrow white fascia; black apical spot present as in Macrosaccus robiniella ; cilia light grey to white. Hindwing, including fringe, uniformly grey. Legs similar to Macrosaccus robiniella in colour pattern.

Abdomen: Similar to Macrosaccus robiniella , dark fuscous dorsally and white ventrally with greyish suffusion on anterior portion of segments 2-7 laterally and sometimes ventrally on A8.

Male genitalia (Figs 18, 19): Similar to Macrosaccus robiniella , with valva gradually constricting before apex. Saccus a long, slender rod ~ 1.75 × length of valva. Aedeagus long and slender, ~ 3.0 × length of valva, with phallobase slightly more enlarged than in Macrosaccus robiniella .

Female genitalia (Figs 20-22): Ductus bursae long and slender, nearly equal to length of of elongate corpus bursae. Accessory bursae ~ 2/3 the length of corpus bursae, arising from near anterior 1/3 of ductus bursae. Corpus bursae elliptical, with series of small, scattered dentate spicules concentrated over caudal 2/3; longitudinal folds or striae not evident along walls; walls of anterior end (distal 1/3) of corpus bursae entirely membranous.

Larva and pupa.

Similar to that of Macrosaccus robiniella .

Larval mine.

(Figs 41-44) The mine begins as an elongate serpentine track on the under (abaxial) side of the leaflet. This enlarges to an elongate-oval, whitish blotch which eventually becomes strongly tentiform (Fig. 43).

Hosts.

(Table 1). Fabaceae : Amphicarpa bracteata (L.) Fernald, (= Amphicarpa monoica (L.) Nutt.,= Falcata comosa (L.) Kuntze, = Amphicarpa comosa (L.) Loudon), ( Chambers 1878: 111; Walsingham 1889: 119; Ely 1917: 59). Strophostyles leiosperma (Torrey and A. Gray), (= Strophostyles pauciflorus (Bentham) S. Watson), new record. The primary host, Amphicarpa bracteata , is a low growing, trifoliate vine which occurs in damp woodlands widely from southern Canada and Montana to Texas and Florida. Strophostyles leiosperma is a climbing, trifoliate vine which occurs in drier habitats through the central United States from Arizona to Pennsylvania and Florida.

Types.

Argyromiges morrisella Fitch: Lectotype ♂, (present designation): "Type; Argyromiges morrisella Ft.; Figured by Miss A. Braun, Feb. 1908; Lectotype ♂, Macrosaccuss morrisella (Fitch) by D. R. Davis." (USNM). [Abdomen is missing].

Lithocolletis texanella Zeller: Holotype ♂, "Type 1336"; "Dallas, Texas", (MCZ). Paratype ♂, “Type”, "Lithoc. Texanella Z. B1/77", "Dallas, Texas", "Zeller Coll., Walsingham Collection 1910 –427”, " Lithocolletis morrisella Fitch", (BMNH).

Lithocolletis amphicarpeaeella Chambers: Lectotype ♂, (present designation): "Type, 1326"; "Kentucky [crossed out], Chambers"; " Lithocolletis amphicarpeaeella Cham."; "Lectotype♂, Lithocolletis amphicarpeaeella Chambers, by D. R. Davis", (MCZ); Paralectotype ♂, "N J, Chambers 1/77" "Lith. Amphicarpeaeella Nr. 3, Syntype, select KRT", (BMNH).

Note: In the lower right corner of drawer Mi 4423, a label with the following handwritten text is present: "Nb. Chambers’ syntypes. The specimens bearing the serial numbers 1-68, and the specimens of G. hermannella var. lingulacella immediately following, were received by Stainton from Chambers. The numbers refer to a list made by Chambers; many of the specimens are likely to be syntypes. See Stainton foreign correspondence, letters nos. 94, 97 and 111 (by Chambers) and Stainton’s “translations” of Chambers’ awful handwriting, nos. 95, 99 and 96 respectively (the letters are out of chronological sequence). - KRT, 1980".

Material examined.

CANADA: MANITOBA: 1 ♀, Aweme: 31 Aug 1931, Host: Strophostyles pauciflora (= Strophostyles leiosperma ), R. M. White, (CNC). ONTARIO: Pt. Pelee: 1 ♀, 10 Oct 1967, T. N. Freeman, Host: Hog Ranot 63-46, (CNC). Simcoe: 1 ♂, 15 Sep 1955, T. N. Freeman, Host: Amphicarpa monoica (= Amphicarpa bracteata ) 65-85, (CNC). Toronto: 2 ♂, 2 ♀, 5.22, Parish; 1 ♂, 6.22, Parish, (BMNH). QUEBEC: Fairy Lake: 1 ♂, 28 Aug 1955, Host: Amphicarpa 55-178, G. G. Lewis, (CNC). UNITED STATES: COLORADO [no specific locality provided]: 1 ♂, Type 1326, [Kentucky crossed out] Chambers, Lectotype Lithocolletis amphicarpeaeella Cham. ♂, (MCZ); 1 ♂, 1 ♀, Type 1326, [Kentucky crossed out] Chambers, Paralectotype Lithocolletis amphicarpeaeella Cham., (MCZ). CONNECTICUT: Hartford Co: Southington: 1 ♂, 3 Sep 1981, C. T. Meier, Host: Amphicarpa bracteata , Leaflet, (USNM). KENTUCKY: 1 ♀, Chamb., 132, (MCZ). ILLINOIS: Adams Co: Quincy: 1 ♀, 15 Feb 1948; 2 ♂, 3 ♀, 6-20 Apr 1947; J. P. Nielson, (INHS). Coles Co: Fox Ridge State Park: 1 ♀, 1 Jun 1991, em. 9 Jun 1991; 1 ♂, 1 ♀, 7 Jun 1991, em. 10 Jun 1991; 2 ♂, 3 ♀, 17 Jun 1991, em. 18-25 Jun 1991; 14 Jul 1991, em. 15 July 1991; 1 ♂, 2 ♀, 2 Aug 1992, em. 6-9 Aug 1992, T. Harrison, Host: Amphicarpa bracteata , (INHS). Putnam Co: 2 ♂, 1 ♀, 15 Jan 1941; 1 ♀, 8 Oct 1964; 2 ♂, 3 ♀, 13-30 Sep 1967; 4 ♂, 1 ♀, 2-8 Oct 1969, underside tentiform mine Amphicarpa monoica , M. O. Glenn, (INHS). MARYLAND: Montgomery Co: 2 mi. S. Laytonsville: 1 ♂, DOA 8 Oct 2009, D.R. Davis, Host: Amphicarpa bracteata , (USNM). Little Bennett Regional. Park: 3 ♂, 3 Aug 2002, em. 14 Aug 2002, D. R. and S. R. Davis, 3 ♂, 5 ♀, 6 Aug 2006, em. 10-16 Aug 2006 DNA/BOLD ID RDOPO081-09, GenBank GU669599, DNA/BOLD ID RDOPO083-09, GenBank GU669598; 2 ♂, 7 Aug 2010, em. 16-18 Aug 2010, D. R. and M. M. Davis, DRD slide 2664, Host: Amphicarpa bracteata , slides USNM 34180, 34181, 34182, DNA / BOLD ID 00715473, DNA/R50BOLD ID 00715475, (USNM). Plummers Island: 1 ♂, 5 Nov 1914, Shannon, (USNM). Prince Georges Co: Seton Belt Woods: 1 ♂, 11 Jul 1977, E. Jäckh, (USNM). MICHIGAN: Calhoun Co: 4 ♂, T1S-R6W Sec 15: 31 Aug 1996, em. 7-11 Sep 1996, lot RJP654.17-18, Host: Amphicarpa bracteata . Clinton Co: T05N-R01 R01W S24: 28 Aug 1991, em. 7-11 Sep 1996, R. J. Priest, lot RJP 932.6-7, Host: Amphicarpa bracteata , (USNM). NORTH CAROLINA: Macon Co: Highlands, 3865': 1 ♂, 31 Jul 1958, R. W. Hodges, (USNM). NEW YORK: Thompkins Co: Ithaca, Six Mile Creek: 3 ♂, 1 ♀, 8 Apr 1945, (CU); 1 ♂, 10 Jul 1960, 1 ♂, 10 Jul 1960, R. W. Hodges, Host: Amphicarpa monoica (L.), (USNM). OHIO: Hamilton Co: Cincinnati: 1 ♂, em. 23 Aug 1908, Annette F. Braun, B361, (MCZ); 1 ♀, em. 16 Jul 1908, 1 ♂, em. 2 Aug 1908, 1 ♂, em. 23 Aug 1908, 1 ♂, em. 24 Aug 1908, 1 ♂, em. 25 Aug 1908, 1 ♂, 1 ♀, em. 2 Sep 1908, 1 ♂, 5 Sep 1918, slides USNM 30891, 30892, 97446, 97447, (USNM). TEXAS: 3 ♂, 1 ♀, Boll, (BMNH). Dallas Co: Dallas: 2 ♂, (holotype and paratype of Lithocolletis texanella Z.), type 1336, Boll, (MCZ); " Lithoc Texanella Z, B 1/77, type", (BMNH); 2 ♀, ( Lithocolletis texanella Z.), (BMNH); 3♂, 3♀ ( Lithocolletis texanella Z.) in coll. Stainton (BMNH).

Distribution.

Macrosaccus morrisella occurs widespread across eastern North America from Manitoba and Ontario, Canada, south and west to Texas and Colorado ( Chambers 1877).

Remarks.

Chambers in his 1877 description of Lithocolletis amphicarpeaeella expressed doubt if this was a new species or new variety (as he did on the same page and line for " Lithocolletis amorphaeella n.sp.? or var.?"). Their descriptions included long, detailed comparisons of the forewing patterns of these two new moths as well of robiniella and “texana” (misspelled). No locality for either name was mentioned except for Colorado in the title of the publication ( Chambers 1877). Each of the three “type” specimens of amphicarpeaeella in the collections of the MCZ have the name “Kentucky” crossed out on the specimen label "Kentucky, Chambers", and no mention of Colorado appears. A male specimen in best condition has been selected as lectotype.

The holotype specimen of Lithocolletis texanella Zeller upon examination was found to be a male and not a female as stated originally by Zeller (1875).