Cranopygia guizhouensis, Chen, 2024

Chen, Zhi-Teng, 2024, Cranopygia guizhouensis sp. nov., a new earwig species of Pygidicranidae (Insecta: Dermaptera) from China, Faunitaxys 12 (38), pp. 1-4 : 1-2

Cranopygia guizhouensis sp. nov.

( Fig. 1 -4)

ZooBank: https://zoobank.org/ FE18DE84-7B40-4FF0-A3DC-EEBBF18AE951

Holotype, ♂ (ICJUST), China, Guizhou Province, Guiyang City, Baguo , 26.29341591°N, 106.61404171°E, 1167 m, 19.VI.2024, Zhi-Teng Chen leg.

Reviewers:

Paratypes, 1 ♂ & 2 ♀ (ICJUST), same data as holotype .

Description of the holotype ( Fig. 1 A-C, 2A-B)

General appearance. – Large sized, whole body densely with tiny punctations and many places setose.

Dimensions. – Body length (from anterior of head to posterior of forceps) 40 mm. Forceps length (from visible base to posterior end) 7 mm.

Head. – Head longer than broad, dark, with a subtrapezoidal, four-lobed, yellow median area;frontal suturespresent, coronal suture distinct. Eyes not prominent, about as long as genae. Antennae pale brown, with 37segments; first antennal joint long, slightly shorter than the distance between antennal bases. Mouthparts brown.

Pronotum. –Pronotum near as long as broad; lateral margins rounded; median longitudinal furrow distinct; surface largely dark, with yellow, elliptical, median and lateral marks.

Tegmina . – Tegmina well developed, about two times longer than pronotum; mostly dark brown, with yellow longitudinal marks on dorsal and lateral surfaces.

Wings. – Scales of hindwings entirely yellow, short, wider than long, posterior margins slightly rounded.

Legs. –Legs short, mostly yellow, with brown longitudinal marks on surface of each segment.

Abdomen. – Abdomen dark brown, gradually expanded to last tergite. Ultimate tergite broad, subquadrate, with distinct curved lateral keels; weakly punctured; median longitudinal sulcus present; two longitudinal ridges present lateral to median sulcus; posterior margin rounded. Forceps dark brown, subcontiguous, asymmetrical; strongly trigonal basally, with both inner and outer dorsal ridges; conical apically; inner margin crenulate mostly at basal half. Penultimate sternite rounded. Genitalia very broad; paramere subtriangular; genital lobes well developed, virga slender, without lateral flanges. External paramere stout, incision of anterior margin rounded, deep and wide; inner process stout, widely bifid apically; outer process short, obtuse.

Male paratype. – Body length 33 mm. Forceps length 6 mm. External and genital characters consistent with holotype.

Lu Qiu (Mianyang Normal University, China) - https://orcid.org/0000-0002-0946-1634 - https://zoobank.org/ DFDB0DF3-222C-4AEF-A7AD-5EC1E61BBF55

Female paratypes ( Fig. 3 A-C). – Body shape and coloration similar to holotype male. Body length 35-39 mm. Forceps length 6-8 mm. Ultimate tergite without distinct lateral keels. Forceps contiguous, tapering, symmetrical, apically incurved, inner margins straight and denticulate.

Diagnosis. – The new species is most similar to Cranopygia kallipygos (Dohrn, 1862) and Cranopygia imperatrix (Burr, 1899) based on the shape of forceps and male genitalia (Dohrn, 1863; Burr, 1899; Steinmann, 1986). However, the new species can be distinguished from C. kallipygos by the stout external paramere with a strong inner process. In C. kallipygos , the external paramere is slender, with a very small inner process (Steinmann, 1986). Compared to C. imperatrix , the new species can easily be distinguished by the much shorter external paramere and the widely bifid inner process (Steinmann, 1986). In addition, the unique color pattern on head and thorax of the new species can assist in separating it from related species.

Etymology. – The new species is named after its type locality in Guizhou Province.

Remarks. – The species was hidden in daylight ( Fig. 4A). At night, the adults did not go to the light trap, but were easily found resting on tree trunks near the light trap and the trees along the roadside where the road lamps were on ( Fig. 4B).

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