Monoceratuncus Razowski, 1992

Brown, John W., 2019, New genera, new species, and new combinations in New World Cochylina (Lepidoptera: Tortricidae: Tortricinae), Zootaxa 4671 (2), pp. 195-222 : 209-210

publication ID

https://doi.org/ 10.11646/zootaxa.4671.2.2

publication LSID

lsid:zoobank.org:pub:8DA2FA3F-3629-4D10-92B0-671637D91DD4

DOI

https://doi.org/10.5281/zenodo.5935407

persistent identifier

https://treatment.plazi.org/id/03E08794-FFCF-FFF3-FF5B-78F5FB70FC0D

treatment provided by

Plazi

scientific name

Monoceratuncus Razowski, 1992
status

 

Monoceratuncus Razowski, 1992 View in CoL

Ceratuncus Razowski, 1986a: 382 View in CoL . [preoccupied]

Monoceratuncus Razowski, 1992: 201 View in CoL [replacement name]; Brown 2005: 265.

Type species: Ceratunus lugens Razowski, 1986 , by original designation.

Although Pogue (1986) proposed the name Decuma in his unpublished Ph.D. dissertation, he subsequently recognized that it was conceptually the same as Razowski’s Ceratuncus , and the latter name was used by Pogue & Mickevitch (1990) in a phylogenetic analysis of North American genera of Cochylidae . In 1992, Razowski proposed the replacement name Monoceratuncus because Ceratuncus was recognized as a junior homonym.

According to Razowski (1986a), autapomorphies for the genus include the distally expanded uncus with a hook-shaped distal process; the broad anterior portion of the tegumen; and the long basal process of the valva, extending ventro-proximally. Razowski (1986a) further commented that the presence of numerous cornuti in the vesica is a synapomorphy with Cochylis .

As currently defined, Monoceratuncus includes nine species: seven occur in Mexico, one in Peru ( Razowski 1993), and one is described herein from Texas. Illustrations of the genitalia can be found in Razowski (1986a, 1993) and Razowski and Becker (1986).

Diagnosis. Adults of Monoceratuncus are among the smaller Cochylina in the New World. They can be distinguished from all other genera by the unusual, well-developed uncus with a conspicuous median swelling or lobe and a slender, hook-shaped apex. The valvae are strongly attenuate distally, usually with a longitudinal row of strong spinelike setae in the distal 0.5. The genus is further characterized by the fused distal arms of the vinculum, the absence of a median process of the transtilla, and the absence of socii. The latter three characters occur sporadically in a few other genera, but never in the same combination as in Monoceratuncus .

Redescription. Head: Vertex and upper frons rough scaled, lower frons with sparse appressed scales; ocellus present; sensory setae of antenna ca. 1.0 times flagellomere diameter in male, shorter, sparser in female; labial palpus porrect, combined length of all segments 1.0‒1.5 times diameter of compound eye, segment III exposed; maxillary palpus 2-segmented. Thorax: Posterior crest small; lateral scale tufts of metanotum flat. Forewing ( Fig. 12 View FIGURES 11–18 ) length 3.4–3.7 mm, females slightly larger than males, forewing length 2.6–3.1 times width, slightly wider in female; costa gently arched from base to apex, without costal fold in male, apex rounded; termen straight, oblique; Sc slightly less than 0.5 wing length; R 1 originating beyond middle of discal cell; R 2 originating nearer R 3 than R 1; R 5 ending at costa; M 3 and CuA 1 separate; CuA 2 originating ca. 0.65 length of discal cell; CuP absent; A1+2 stalked at ca. 0.5 of length. Hindwing moderately broad, length 2.4–2.7 times width; costa straight, with costal roll extending ca. 0.5 length of costa in male; apex produced; termen concave below apex; Sc+R 1 ca. 0.33 wing length in male, 0.65 wing length in female; Rs and M 1 stalked ca. 0.65 length of M 1; M 3 and CuA 1 separate; CuA 2 originating ca. 0.65 length of discal cell; frenulum with one acanthus in male, two in female. Abdomen: Unmodified. Male genitalia ( Fig. 29 View FIGURES 27–32 ) with anterior portion of tegumen broad; vinculum complete with small saccuslike process; uncus well developed, with expanded median lobe, produced into a curved spine apically; socius absent; transtilla well developed, broad laterally, with short median process; valva broad at base, narrowed distally, costa lightly sclerotized, apex produced, sacculus ill defined, completely fused to venter of valva. Phallus slightly shorter than valva, bent near middle, pointed apically; vesica with patch of tiny cornuti. Female genitalia ( Fig. 42 View FIGURES 39–43 ) with papillae anales narrow, weakly sclerotized, setose, joined posteriorly; apophyses anteriores slightly shorter than apophyses posteriores, not fused to sterigma; sterigma comprised of a few narrow trapezoidal plates parallel to each other; ductus bursae undifferentiated from corpus bursae; corpus bursae small with linear convolutions along entire length, with scattered minute spicules; accessory bursa originating from posterior end of corpus bursae.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Lepidoptera

Family

Tortricidae

Loc

Monoceratuncus Razowski, 1992

Brown, John W. 2019
2019
Loc

Monoceratuncus

Brown, J. W. 2005: 265
Razowski, J. 1992: 201
1992
Loc

Ceratuncus

Razowski, J. 1986: 382
1986
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