Cryptolarynx cederbergensis Haran, 2023

Haran, Julien M., Marvaldi, Adriana E., Benoit, Laure, Oberlander, Kenneth, Stals, Riaan & Oberprieler, Rolf G., 2023, Revision of the enigmatic South African Cryptolaryngini (Coleoptera, Curculionidae), with description of a new genus and twenty-two new species, European Journal of Taxonomy 877 (1), pp. 1-89 : 51-53

17. Cryptolarynx cederbergensis Haran sp. nov.

urn:lsid:zoobank.org:act:1F91C372-DB13-4390-8130-02F8B37A4FE2

Figs 1Q , 2Q , 3Q , 4Q , 5Q

Differential diagnosis

Cryptolarynx cederbergensis sp. nov. is most similar to C. pyrophilus sp. nov. but can be distinguished from it by the width of its forehead, which is less than twice the width of an eye (equal to twice width in C. pyrophilus ), and by the arrangement of setae at the apex of the parameroid lobes ( Fig. 2Q ). The two species were found to have interspecific uncorrected p-distances ranging from 20.9% to 23.3% for COI and 5.2% for EF1 (Supp. file 1).

Etymology

The species name cederbergensis refers to the origin of this species, the Cederberg mountains in the Western Cape province. The specific epithet is an adjective in the masculine form.

Material examined

Holotype REPUBLIC OF SOUTH AFRICA • ♂; “REPUBLIC OF SOUTH AFRICA. Western Cape Province, [Cederberg Wilderness Area;] Algeria [ Forest Station ] ca. 20 km S. 23.viii.2018. J. Haran leg.” “ 32.469° S 19.206° E, at base of Oxalis obtusa . JHAR01422_0101. Cirad-CBGP coll.” “Holotype. Cryptolarynx cederbergensis . Haran 2023”; SAMC.

Paratypes REPUBLIC OF SOUTH AFRICA – Western Cape • 1 ♂, 2 ♀♀; same collection data as for holotype; CBGP .

Description (♂)

MEASUREMENTS. Body length 1.9–2.2 mm.

COLOUR AND VESTITURE. Body integument black, basal half of scapes reddish in mature specimens. Dorsal vestiture (pronotum + elytra) consisting of overlapping, recumbent, parallel-sided clothing scales, 2× as long as wide, mostly rounded at apex; colour of scales white or pale brown to dark brown; white scales usually concentrated in a pair of longitudinal lateral stripes on pronotum and elytral interstriae 4, creating a broad darker stripe medially on pronotum and basal ⅔ of elytra; white scales also concentrated in a pair of ill-defined pale spots surrounded by black scales at apical ⅔ of interstria 3; scales of striae recumbent, in lateral view not or only very slightly distinct from rest of vestiture.

HEAD. Forehead very wide, slightly wider than epifrons near antennal insertions, ca 2 × as wide as width of an eye, scales suberect. Eyes convex, in dorsal view slightly exceeding outline of head, surrounded by a ring of short pale scales, on forehead directed towards occiput; distance between eye and scrobe as large as width of antennal club. Epifrons with distance between antennal insertions 0.8× length of scape, scales at least 3 × as long as wide, suberect, contiguous. Frons with a pair of long erect lateral setae. Epistome with one or two elongate median setae. Antennal funicles with segment 1 elongate; 2 shorter, at most 1.5× as long as wide; 3 longer than wide; 4 globular, isodiametric, compressed, slightly angular on inside; 5–7 globular, isodiametric.

PRONOTUM. Transverse (W:L ratio 1.6), widest posteriorly of midlength, sides arcuate; apex and base subequal in width.

ELYTRA. Broadly ovate, isodiametric (W:L ratio 1), sides convex, widest near midlength.

LEGS. Tibiae with apical mucro; protibiae with both outer and inner margins straight; metatibiae with inner setal fringe, the setae shorter than segment 5 of metatarsus. Tarsi with segment 2 slightly longer than wide.

ABDOMEN. Ventrites with creamy-white plumose scales not concealing integument; ventrites 1–4 with long suberect scales; ventrite 5 devoid of scales in apical half, there bearing only erect setae.

TERMINALIA. Body of penis elongate (W:L ratio 0.3–0.4), as long as temones, sides subparallel, converging in apical third; curvature in profile weak and regular, dorsoventrally narrowed before apex. Copulatory sclerite forming a reversed V. Parameroid lobes separate, divided by deep median notch, each lobe broad, bearing a series of long setae directed apicad. Spiculum gastrale with basal arms long, regularly curved, right arm angulate near its base.

Sexual dimorphism

The sexes can be distinguished by the width of the forehead (as wide as or narrower than width of an eye in male, wider in female).

Life history

Specimens of C. cederbergensis sp. nov. were collected in monospecific stands of Oxalis obtusa , in the month of August.

Distribution

The species was found only at the type locality ( Fig. 13 ).

Figures

Fig. 1 (Part I) (next page). Habitus of males of species of Cryptolarynx Van Schalkwyk, 1966 (dorsal view). A. C. vitis (Marshall, 1957). B. C. subglaber Haran sp. nov. C. C. squamulatus Haran sp. nov. D. C. muellerae Haran sp. nov. E. C. hirtulus Haran sp. nov. F. C. robustus Haran sp. nov. G. C. namaquanus Haran sp. nov. H. C. carinatus Haran sp. nov. I. C. variabilis Haran sp. nov. J. C. estriatus (Marshall, 1957). K. C. pyrophilus Haran sp. nov. L. C. pilipes Haran sp. nov. Not to scale.

Fig. 2 (Part I) (next page). Male genitalia of species of Cryptolarynx Van Schalkwyk, 1966. Penis in dorsal and lateral view (left), tegmen in dorsal view (middle) and details of apex of a parameroid lobe and spiculum gastrale in dorsal view (right). A. C. vitis (Marshall, 1957). B. C. subglaber Haran sp. nov. C. C. squamulatus Haran sp. nov. D. C. muellerae Haran sp. nov. E. C. hirtulus Haran sp. nov. F. C. robustus Haran sp. nov. G. C. namaquanus Haran sp. nov. H. C. carinatus Haran sp. nov. I. C. variabilis Haran sp. nov. J. C. estriatus (Marshall, 1957). K. C. pyrophilus Haran sp. nov. L. C. pilipes Haran sp. nov. Not to scale.

Fig. 3 (Part I) (next page). Habitus of males of species of Cryptolarynx Van Schalkwyk, 1966 (lateral view). A. C. vitis (Marshall, 1957). B. C. subglaber Haran sp. nov. C. C. squamulatus Haran sp. nov. D. C. muellerae Haran sp. nov. E. C. hirtulus Haran sp. nov. F. C. robustus Haran sp. nov. G. C. namaquanus Haran sp. nov. H. C. carinatus Haran sp. nov. I. C. variabilis Haran sp. nov. J. C. estriatus (Marshall, 1957). K. C. pyrophilus Haran sp. nov. L. C. pilipes Haran sp. nov. Not to scale.

Fig. 4 (Part I) (next page). Head of males of species of Cryptolarynx Van Schalkwyk, 1966. A. C. vitis (Marshall, 1957). B. C. subglaber Haran sp. nov. C. C. squamulatus Haran sp. nov. D. C. muellerae Haran sp. nov. E. C. hirtulus Haran sp. nov. F. C. robustus Haran sp. nov. G. C. namaquanus Haran sp. nov. H. C. carinatus Haran sp. nov. I. C. variabilis Haran sp. nov. J. C. estriatus (Marshall, 1957). K. C. pyrophilus Haran sp. nov. L. C. pilipes Haran sp. nov. Not to scale.

Fig. 5 (Part I). Ventrites of males of species of Cryptolarynx Van Schalkwyk, 1966. A. C. vitis (Marshall, 1957). B. C. subglaber Haran sp. nov. C. C. squamulatus Haran sp. nov. D. C. muellerae Haran sp. nov. E. C. hirtulus Haran sp. nov. F. C. robustus Haran sp. nov. G. C. namaquanus Haran sp. nov. H. C. carinatus Haran sp. nov. I. C. variabilis Haran sp. nov. J. C. estriatus (Marshall, 1957), with details of a cuticular carina (white arrows). K. C. pyrophilus Haran sp. nov. L. C. pilipes Haran sp. nov. Not to scale.

Fig. 13. Distribution maps of species of Cryptolarynx Van Schalkwyk, 1966 and Hadrocryptolarynx Haran gen. nov.