Craspedolepta euthamiae Burckhardt and Halbert, 2020

Halbert, Susan E. & Burckhardt, Daniel, 2020, The psyllids (Hemiptera: Psylloidea) of Florida: newly established and rarely collected taxa and checklist, Insecta Mundi 2020 (788), pp. 1-88 : 16-19

Craspedolepta euthamiae Burckhardt and Halbert , new species

LSID: urn:lsid:zoobank.org:pub:2454C96B-5D17-4162-A3BB-296F5C0DC216

( Fig. 48–55 , 72–75, 79, 80 )

Materials examined. Holotype ♂: USA: Florida : Highlands County, Lorida , SFWMD Hickory Hammock, 7.xi.2002, Euthamia graminifolia (K. Hibbard) ( FSCA # E2002-5478 ) ( FSCA, dry mounted) . – Paratypes. USA: Florida: Highlands County: 1 ♀, same data as holotype ( FSCA, dry mounted) ; 1 ♂, 1 ♀, same but Hickory Hammock , 19.xi.2002, Euthamia graminifolia (K. Hibbard and J.Bennet) ( FSCA # E2002-5702 ) ( FSCA, slide mounted) ; 3 ♀, same but Venus, Archbold Biological Station , 27.18222, –81.34833, 45–69 m, 1–2.x.2016, sweeping Florida scrub, on Euthamia graminifolia (I. Malenovský) ( MMBC, dry mounted) . Indian River County: 3 ♀, E Side 58 Avenue, 1 mile S 69 St. , Vero Beach , 25.xi.2002, Euthamia graminifolia (K. Hibbard) ( FSCA # E2002-5790 ) ( FSCA, NHMB, dry mounted) ; 1 ♂, 1 ♀, 1 immature, same but Vero Beach , 29.x.2014, Euthamia graminifolia (C. Frere) ( FSCA # E2014-7552 ) ( FSCA, slide mounted) . Lake County: 5 ♀, Mascotte , 11.ix.1938 ( Oman), 2 specimens labelled as paratypes of Craspedolepta numerica Journet and Vickery ( USNM, dry mounted) . Martin County: 1 ♀, Hobe Sound , 24.vi.1939 ( Oman) ( USNM, dry mounted) ; 2 ♂, 1 ♀, 1 mi, E US 1, S side of Jensen Beach Boulevard, Jensen Beach , 11.xii.2002, Euthamia graminifolia (K. Hibbard) ( FSCA # E2002-6029 ) ( NHMB, dry mounted) . Miami-Dade County: 2 ♂, Miami , 24.i.1934 (J.S. Caldwell collection) ( USNM, dry mounted) . Nassau County: 2 ♀, Hilliard , 5.x.1938 ( Oman), 1 specimen labelled as paratype of Craspedolepta numerica Journet and Vickery ( USNM, dry mounted) . Okeechobee County: 1 ♀, SR 88 & US 441, Fort Drum , 19.xi.2002, Euthamia graminifolia (K. Hibbard) ( FSCA # E2002-5711 ) ( FSCA, dry mounted) . Osceola County: 1 ♀, 2.5 miles S SR 60, Yeehaw , 16.xii.2001, Euthamia graminifolia (K. Hibbard) ( FSCA # E2002-6043 ) ( FSCA, dry mounted) . Pasco County: 1 ♀, Seven Oaks , 1.v.1908 (Van Duzee) ( USNM, dry mounted) ; 1 ♂, New Port Richey , 7.x.1936 ( Oman) ( USNM, dry mounted) . Pinellas County: 1 ♀, Dunedin , 7.x.1938 ( Oman) ( USNM, dry mounted) . St. Lucie County: 4 ♀, East side of Jenkins Road, 0.25 miles South of SR 70, Fort Pierce , 18.xi.2002, Euthamia graminifolia (K. Hibbard) ( FSCA # E2002-5699 ) ( FSCA, NHMB, dry mounted) . Volusia County: 1 ♀, Edgewater , 6.iv.1938 (D.M. DeLong) ( USNM, dry mounted) .

Description. Adult. Coloration. General body color green or light ochreous. Antennal segments 9 and 10 light brown but not black. Forewings yellowish or light ochreous; membrane transparent, weakly to moderately beset with brown, relatively inconspicuous dots, usually absent in basal third or quarter becoming denser towards apex but rarely confluent. – Structure. Head weakly inclined from longitudinal body axis (20–30°), about as wide as mesonotum in dorsal view ( Fig. 50 ). Vertex subtrapezoidal, 1.9 times as wide as long along median suture; weakly indented antero-medially; toruli, in dorsal view, weakly concave. Antenna 1.3–1.4 times as long as head width. Rostrum 0.3–0.5 times as long as head width. Metatibia 0.6–0.7 times as long as head width. Forewing ( Fig. 48 ) 3.0–3.5 times as long as head width, 2.5–2.8 times as long as wide, widest in the middle. Surface spinules ( Fig. 49 ) forming a hexagonal pattern consisting of a single row of spinules. Male terminalia ( Fig. 51 , 72–75, 79 ) with proctiger 0.4 times as long as head width. Paramere, in profile, irregularly lamellar, slightly curved, narrow in basal third, irregularly widening toward apex; anterior thumb-like process relatively broad, apex distant from sclerotized apical rim; apico-posterior edge slightly angular; inner face in apical half with extended rugose microscultpture. Distal segment of aedeagus slightly longer than paramere, with large apical dilatation that is about half as long as segment, with weakly sclerotized apico-anterior ridge ending in a small, hook-like tooth; apical dilatation with very long membranous sack-like extension basi-posteriorly; sclerotized end tube of ductus ejaculatorius thin, almost as long as entire segment. Female terminalia cuneate ( Fig. 80 ). Proctiger 1.0–1.1 times as long as head width, with two submedian longitudinal rows of long hairs in apical half; dorsal margin almost straight or weakly undulate, apex not widened, subacute. Circumanal ring oval, 0.3–0.4 times as long as proctiger; consisting of a single row of elongate pores. Subgenital plate 0.8 times as long as proctiger, subacute apically. Dorsal and ventral valvulae hardly curved, lacking teeth. – Measurements (in mm; 2 ♂, 2 ♀). Head width 0.50–0.58; antenna length 0.66–0.78; forewing length 1.48–1.98; length of male proctiger 0.18; paramere length 0.22–0.24; length of distal segment of aedeagus 0.28; length of female proctiger 0.58–0.60.

Fifth instar immature ( Fig. 52 ). Coloration. General body color yellowish. – Structure. Body strongly dorsoventrally flattened, 1.5 times as long as wide. Fore margin of head and antennae with lanceolate setae; antennae ( Fig. 54 ) 3-segmented, 0.5 times as long as forewing pad, bearing 6 rhinaria on segment 3. Forewing pads narrow, weakly truncate apically, with distinct humeral lobes; lacking marginal and dorsal lanceolate setae, as those on margin of caudal plate. Tarsal arolium ( Fig. 55 ) longer than claws, oval, without petiole and unguitractor. Caudal plate ( Fig. 53 ) pointed apically, with microscopic setae dorsally and lanceolate setae along margins. Outer circumanal ring ( Fig. 53 ) small, oblong oval, narrowly rounded laterally; distant from posterior margin of caudal plate, distance from posterior margin of circumanal ring to posterior margin of caudal plate longer than width of circumanal ring, consisting of a single row of pores. – Measurements (in mm; 1 immature). Body length 1.70; antenna length 0.34.

Distribution. USA: Florida: Alachua, Brevard, DeSoto , Highlands, Indian River, Lake, Martin, Miami-Dade, Nassau, Okeechobee, Orange, Osceola, Pasco, Pinellas, St. Lucie, Volusia counties.

The species was identified first in Florida between November 2002 and February 2003 in several Florida counties by DPI inspector Kenneth Hibbard. Some specimens of the new species collected during this period are from additional localities but were not restudied for the description. Thus , they are not included in the data above. These localities (alphabetical by county) include Palm Bay (Brevard County; FSCA# E2002-5849 ), Arcadia ( DeSoto County ; FSCA# E2004-7522 ), Lake Placid (Highlands County; FSCA# E2003-23 ), Ft. Drum ( Okeechobee County ; FSCA# E2002-5711 ), Orlando ( Orange County ; FSCA# E2002-6104 ), Ft. Pierce ( St. Lucie County ; FSCA# E2002-5699 , E2003-365 ), Port St. Lucie ( St. Lucie County ; FSCA# E2003-258 , 418 , 6307 ), and Oak Hill ( Volusia County ; FSCA# E2002-6051 , 6052 ). Most recently, specimens were collected in Morningside Nature Center, Gainesville ( Alachua County ; FSCA# E2018-5577 ) in October 2018.

Host plant. Euthamia graminifolia (L.) Nutt. (syn. Euthamia caroliniana (L.) Greene ex Porter and Britt.) (Compositae). In the Atlas of Florida Plants ( Wunderlin et al. 2020) Euthamia caroliniana is considered a valid species; in the World Flora Online ( WFO 2020), however, it is a synonym of E. graminifolia . All the records from Florida are from E. caroliniana .

Derivation of name. Named after its host genus Euthamia .

Comments. Adults of Craspedolepta euthamiae spec. nov. differ from all other similar North American species, i.e. species with spotted forewings, bearing surface spinules usually forming a hexagonal pattern consisting of a single row of spinules, with a lamellar paramere widening towards the apex, and with distal segment of the aedeagus strongly expanded apically with a small anterior hook, as follows. Craspedolepta caudata (Crawford, 1911) , C. minuta (Caldwell, 1938) and C. numerica ( Caldwell, 1941) have a broader, slightly more curved paramere. Craspedolepta fumida (Caldwell, 1938) , C. macula Journet and Vickery, 1979, C. maculimagna Journet and Vickery, 1979, C. nota Journet and Vickery, 1979 , and C. scurra Journet and Vickery, 1979, have female terminalia that are longer, with the dorsal margin of the proctiger distinctly undulate. The female terminalia of C. constricta ( Caldwell, 1936) also are longer, but the dorsal margin of the proctiger is distinctly concave. Craspedolepta smithsoniana Klimaszeski, 1979 , differs in the much smaller apical dilatation of the distal segment of the aedeagus and the much shorter end tube of the ductus ejaculatorius. In C. parvula Journet and Vickery, 1979 , and C. vulgaris Journet and Vickery, 1979, the paramere is similar but the rugose microscultpture on the inner face is much more restricted and the sclerotized end tube of the ductus ejaculatorius is only about half as long as the distal segment of the aedeagus. Craspdolepta ochracea (Provancher, 1872) has similar parameres and aedeagus but lacks dark spots in the forewings, has a shorter end tube of the ductus ejaculatorius, and longer female terminalia.

Virtually nothing is known about the immatures of the North American Craspedolepta species. Descriptions exists only for C. nebulosa (Zetterstedt, 1840) and C. subpunctata ( Foerster, 1848), two Holarctic species associated with Epilobium angustifolium (Onagraceae) ( Ossiannilsson 1992). Both species share the 3-segmented antennae with C. euthamiae but differ in the circumanal ring that consists of several rows of pores.

Craspedolepta numerica was reported “from southwestern United States and Mexico, though some specimens from Florida seem to fall within this species” ( Journet and Vickery 1979). From Florida, they mentioned specimens from Garnett, Mascotte and Hilliard which we examined (USNM). The material from Garnett belongs to C. numerica of which we have examined the types (USNM) ( Fig. 76–78, 81 ), however, Garnett is not in Florida but is in Kansas. The specimens from Mascotte and Hilliard belong to C. euthamiae and constitute a part of the type series. Craspedolepta euthamiae and C. numerica are similar in body size, forewing shape with spotted membrane ( Fig. 48 ), the surface spinules forming hexagonal pattern consisting of a single row of spinules ( Fig. 49 ), the shape of the aedeagus ( Fig. 75, 78 ) and the female terminalia ( Fig. 79, 81 ). They clearly differ in the shape of the paramere and the presence or absence of tubercular microsculpture on the inner surface ( Fig. 73, 74 versus 77).

Craspedolepta nota was described from 12 adult specimens from Canada (Alberta, Manitoba) and the USA (FL, KS). Journet and Vickery (1979) stated that the separation from C. caudata (Crawford, 1911) , C. macula Journet and Vickery, 1979, and C. numerica is “problematic”. We suspect that Journet and Vickery’s (1979) C. nota is a species mix, and the specimens from Florida belong to C. euthamiae spec. nov.

Figures

Figures 44–55. Craspedolepta spp. 44, 46) C . bifida. 45, 47) C . furcata. 48–55) C . euthamiae new species. 44, 45) Head, pronotum, dorsal view. 46, 47) Adult, in profile. 48) Forewing. 49) Surface spinules in cell r2. 51) Male terminalia, in profile.52) Immature, habitus, dorsal view. 53) Circumanal rings. 54) Antenna. 55) Apex of tarsus. Scales: 44, 45) 0.1 mm; 46, 47) 0.1 mm; 48) 0.2 mm; 49) 0.02 mm; 50) 0.1 mm; 51) 0.02 mm; 52) 0.2 mm; 53) 0.1 mm; 54) 0.1 mm; 55) 0.02 mm.

Figures 72–81. Craspedolepta spp. 72–75, 79, 80) C . euthamiae spec. nov. 76–78, 81) C . numerica. 72, 76) Male terminalia, in profile. 73, 74, 77) Inner face of paramere, in profile. 75, 78) Distal segment of aedeagus. 79, 81) Female terminalia, in profile. 80) Dorsal and ventral valvulae. Scales: 72, 76) 0.1 mm; 73–75, 77, 78) 0.05 mm; 79, 81) 0.2 mm; 80) 0.1 mm.