H-3530 Miskolc, Mélyvölgy 13/A, Hungary..
Zootaxa. 2021 Feb 16;4927(4):zootaxa.4927.4.11. doi: 10.11646/zootaxa.4927.4.11.
Dichagyris is a diverse genus with a Holarctic distribution. Only a few taxa of the subgenus Albocosta Fibiger Lafontaine, 1997 occur in the northwesternmost part of the Oriental region. The genus is most diverse in Turkey, Iran and the Central Asiatic high mountains. However, there is a distinct Sino-Tibetan group of species, possibly representing an undescribed subgenus. However, this idea is provisional and awaits revision of the genus. For present purposes, we assign these species to the subgenus Dichagyris. They share the following putative synapomorphies: black, dark brown or dark greyish forewing ground colour (with one exception), with obscure, reduced wing pattern and a broad-based, short, conical harpe in the male genitalia. Species of this group can be subdivided to two species-groups. In the astigmata-group which was mentioned for the first time by Hreblay et al. (1998) but without description or diagnosis from the minuta-group, the vesica is elongate and tubular (males), the appendix bursae and corpus bursae are long, sack-like, almost equal in size (females). In the minuta-group, the vesica is more ample than in the astigmata-group, and coiled, and the appendix bursae is globular and much shorter than the corpus bursae. The astigmata-group includes Dichagyris astigmata (Hampson, 1906), D. gansuensis Hreblay Ronkay, 1998, D. geochroides (Boursin, 1948) and D. vargazoli (Gyulai Ronkay, 2001). The minuta-group comprises D. minuta Hreblay Plante, 1998 and D. kormos Gyulai Ronkay, 2001. During a research expedition in Sichuan in 2019, the existence of a third species in the minuta-group was recognized, which is described here. In addition, the female and its genitalia of D. gansuensis, which was described by Hreblay Ronkay (1998) based on a single male, are illustrated here for the first time.
双栉角蝗属（Dichagyris）是一个分布广泛的多样化属，具有全北界分布。仅亚属 Albocosta Fibiger Lafontaine，1997 的少数几个分类单元出现在东洋区最西北部。该属在土耳其、伊朗和中亚高山地区最为多样化。然而，有一个明显的中国-喜马拉雅物种群，可能代表一个未被描述的亚属。然而，这个想法是暂定的，有待对该属进行修订。目前，我们将这些物种归入双栉角蝗属亚属。它们具有以下假定的共同特征：黑色、深棕色或深灰色的前翅底色（只有一个例外），翅膀图案模糊、简化，雄性生殖器中具有宽阔基底、短、锥形的尾须。这个类群的物种可以细分为两个物种群。在 astigmata-group 中，Hreblay 等人（1998）首次提到，但没有对 minuta-group 进行描述或诊断，其中 Vesica 是长而管状的（雄性），附属囊和囊体是长的、囊状的、几乎相等大小（雌性）。在 minuta-group 中，Vesica 比 astigmata-group 更丰富，并且是卷曲的，附属囊是球形的，比囊体短得多。astigmata-group 包括 Dichagyris astigmata（Hampson，1906）、D. gansuensis Hreblay Ronkay，1998、D. geochroides（Boursin，1948）和 D. vargazoli（Gyulai Ronkay，2001）。minuta-group 包括 D. minuta Hreblay Plante，1998 和 D. kormos Gyulai Ronkay，2001。在 2019 年四川的一次研究考察中，发现了 minuta-group 中的第三个物种，并在此描述。此外，根据单一雄性描述的 Hreblay Ronkay（1998）的 D. gansuensis 的雌性及其生殖器，也首次在此进行了说明。
