Eucorydia

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Taxonavigation

Ordo: Blattodea
Familia: Corydiidae

Name

Eucorydia Hebard, 1929 – Wikispecies link – Pensoft Profile

• Eucorydia Hebard, 1929: 96; Princis 1963: 81; Asahina 1971: 256.

Type species

Eucorydia westwoodi (Gerstaecker, 1861)

Diagnosis

This genus is remarkable for its brilliant coloration; most species are a shiny metallic blue or green, with bright orange coloration on tegmina and abdomen.

Description

Male: body length 8.0–18.5 mm, including tegmina 11.0–22.3 mm. Body small, bright, usually metallic greenish blue to blue, some species blackish colored, tegmina usually with orange band, spots or occupied by large orange areas, abdomen occupied by small to large orange areas. The coloration of the pubescence or setae on the body surface usually brown to black, or identical to the coloration where they are inserted (e.g., the yellow band usually with yellow pubescence), but some species may have additional white or gray pubescence in specific areas. Head: Roundly triangular (Fig. 1A), usually black with vertex slightly metallic, thickly pubescent, much denser at vertex; eyes wide apart, moderate size, interocular space narrower than the distance between antennal sockets, ocelli very small, reduced to small spots; two shallow dimples between the antennal sockets; antennae with basal segment elongate, the remaining segments short, but thickened medially and then thinner toward apex, two to six segments near the apex white (arrow in Fig. 1C); clypeus small, well divided into ante-clypeus and hind-clypeus, and hind-clypeus also distinctly divided by a longitudinal line medially; labrum specialized, transverse, median with a round impression, hind lateral corners protruded (arrow in Fig. 1D); maxillary palpi with 3rd segment enlarged, concave and pubescent (arrow in Fig. 1B), 4th segment with base thin, distal portion thick, 5th segment with apex truncated, hollow. Pronotum: transverse, usually metallic, some species black and with yellowish stripes, surface densely nodulose and setose, disc with many smooth and thin stripes forming a symmetrical marking (Fig. 1F). Tegmina and wings: Tegmina broad, exceeding the end of abdomen, metallic or black, usually with orange band, spotted or occupied by large orange areas; wings yellow to dark brown, some species with a transparent stripe across the middle of the wing, RA end usually with an elongate yellow spot. Venation as in Fig. 1H–I (Eucorydia dasytoides is an example), tegmen with a simple Sc which only has several small branches, R well-branched and occupying approximately 2/5 of the tegmen, M basally with a bifurcate branch and with approximately three branches distally, CuA branched basally, with approximately four branches. Hind wing with a single RA, RP occupying the distal margin, M single, CuA with approximately eight straight and paralleled branches. Legs: Dark brown to black, sometimes slightly metallic, with unequal length setae, apical femur with a spine, tarsal claws symmetrical, arolia present (Fig. 1E). Abdomen: Generally two types, one type totally orange except the last apical segments, the other type only with lateral portions orange, the rest of area dark brown to black, and slightly metallic; the 8th terga specialized, lateral corners protruded, spinous, elongate (Fig. 1J); eversible glands present (arrow in Fig. 1G). Supra-anal plate short, transverse, pubescent, median concave, the shape of hind margin varies, two median sclerites present, paraprocts asymmetrical, cerci long (Fig. 1K). Subgenital plate protruded, well setose, apex with a small and well setose isolated area (arrow in Fig. 1L), styli thick, long, setose. Genitalia: Left phallomere: L1 with anterior portion elongate, round, hind portion bifurcate, membrane medially, L2 enlarged, plate-like, left elongate, curved, L3 thin, strongly and roundly curved, L4N simple, L4M transparent, membrane, with two sclerotized portions, L7 well-developed, integrated with the right phallomere as an appendage sclerite, generally with two protruded parts, the basal one varied in shape, the distal one usually elongate, apex narrowed. Right phallomere: R1M large, elongate, subtransparent, hind apex protruded, round, R3 small, curved, R2 round, irregular, shape varies (Fig. 1M). Female: winged, arolia present; generally similar to the male, but differing in the following features: 1) labrum not specialized, apex round, the 3rd segment of maxillary palpus normal, not enlarged and concave; 2) tegmina short in that they are usually reaching to, or only slightly beyond, the end of abdomen; 3) supra-anal plate large, round and protruded, apex slightly emarginated, median with a longitudinal line, cerci short; 4) subgenital plate with hind portion protruded, bulging.
Nymph: yellowish brown to dark brown, well pubescent, antennae near the apex white (Fig. 14H).
Ootheca: keel with distinct serrations. The longitudinal line on the surface sharp.

Natural history

Male usually visiting flowers during the day (e.g., E. dasytoides was observed visiting the flowers of Castanopsis carlesii and Acer albopurpurascens in Taiwan, Wen-I Chou, pers. obs.), female can be found hiding under the bark of rotten wood (Yi-Zhou Liu, pers. obs. for E. linglong sp. n.). Sometimes the individuals can be found on the ground (Lu Qiu, pers. obs. for E. dasytoides; Jin Chen, pers. obs. for E. linglong sp. n.), or observed flying on the mountain top (Wen-I Chou and De-Yao Zhou, pers. obs. for E. dasytoides).

Distribution

China, India, Myanmar, Vietnam, Japan, Southeast Asia.

Key to Eucorydia species worldwide — L. Qiu , Y. Che , Z. Wang

1		Pronotum with two yellowish spots     E. ornata
–		Pronotum without two yellow spots    2
2		Tegmina unicolored    3
–		Tegmina not unicolored    4
3		Body black (Fig. 12D-E)     E. tristis
–		Body metallic green     E. yasumatsui
4		Tegmina metallic green to blue, with only two small spots on the lateral margins    5
–		Tegmina brown, dull blue or metallic green to blue, pattern not as above    9
5		Tegmina with whitish pubescence on the metallic area    6
–		Tegmina without white pubescence on metallic area, abdomen orange except for the last three sternites (Fig. 12A–B)     E. coerulea
6		Body very small, less than 10 mm (without tegmina) both sexes, terga strongly metallic purplish (Fig. 11L–M)     E. gemma
–		Body not very small, more than 10 mm (without tegmina) both sexes    7
7		White pubescence on tegmina circle-shaped    8
–		White pubescence on tegmina band-shaped (Fig. 7L, N)     E. linglong sp. n.
8		Yellow spots on tegmina elongate (Fig. 11A, D)     E. aenea
–		Yellow spots on tegmina small (Fig. 11H, K)     E. forceps
9		Tegmina with distal half totally orange, basal half metallic green to blue; abdomen orange except the last two to four sternites    10
–		Not as above    12
10		Tegmina with anal areas half orange, half metallic (Fig. 9A)     E. xizangensis
–		Tegmina with anal areas totally metallic    11
11		Border between the metallic and orange areas W-shaped (Fig. 9G, I)     E. splendida sp. n.
–		Border between the metallic and orange area slightly waved (Fig. 14L–M)     E. hilaris
12		Pronotum metallic green with yellowish pubescence; tegmina orange, base metallic green, median and distal with four irregular spots on each tegmen (Fig. 12G)     E. multimaculata
–		Not as above    13
13		Head orange    male E. maxwelli
–		Head dark-colored    14
14		Tegmina orange, apex brown, basal lateral margins brown, extending inward and enlarged, anal areas totally orange (Fig. 13H)    female E. maxwelli
–		Not as above    15
15		Body dull blue, tegmina with a large spot medially on the sutural margin     E. westwoodi
–		Not as above    16
16		Tegmina with white or yellowish white pubescence on metallic area    17
–		Tegmina without white or yellowish white pubescence on metallic area    19
17		Body large, male body more than 18 mm (including tegmina); tegmina base with whitish pubescence, pronotum without white pubescence (Fig. 7F)     E. pilosa sp. n.
–		Body small, male body less than 17 mm(including tegmina), both tegmina base and pronotum with white or yellowish white pubescence    18
18		Body broad and robust, male body length about 16 mm (including tegmina); pubescence on the tegmina white extending along the sutural margin of left tegmen (Fig. 7J)     E. tangi sp. n.
–		Body narrow and short, male body length less than 14.5 mm; pubescence on tegmina and pronotum yellowish white (Fig. 7H)     E. guilinensis sp. n.
19		Body small, male body only 15 mm (including tegmina)     E. yunnanensis
–		Body large, male body more than 18 mm (including tegmina)     E. dasytoides

Checklist of Eucorydia worldwide (Chinese species in bold)

Eucorydia aenea (Brunner von Wattenwyl, 1865)—India, Thailand, Vietnam, Myanmar
Eucorydia coerulea (Shelford, 1906)—Malaysia
Eucorydia dasytoides (Walker, 1868)—China, Vietnam
Eucorydia forceps (Hanitsch, 1915)—Malaysia
Eucorydia gemma Hebard, 1929—Indonesia
Eucorydia guilinensis sp. n.—China
Eucorydia hilaris (Kirby, 1903)—China
Eucorydia linglong sp. n.—China, Vietnam
Eucorydia maxwelli (Hanitsch, 1915)—Malay Peninsula, Sumatra and Borneo
Eucorydia multimaculata Bruijning, 1948—Indonesia
Eucorydia ornata (Saussure, 1864)—India, Myanmar
Eucorydia pilosa sp. n.—China
Eucorydia splendida sp. n.—China
Eucorydia tangi sp. n.—China
Eucorydia tristis Hanitsch, 1929—Indonesia
Eucorydia westwoodi (Gerstaecker, 1861)—India, Nepal
Eucorydia xizangensis Woo & Feng, 1988—China
Eucorydia yasumatsui Asahina, 1971—Japan
Eucorydia yunnanensis Woo, Guo & Feng, 1986—China
Eucorydia sp. 1—Thailand
Eucorydia sp. 2—China

Taxon Treatment

• Qiu, L; Che, Y; Wang, Z; 2017: Revision of Eucorydia Hebard, 1929 from China, with notes on the genus and species worldwide (Blattodea, Corydioidea, Corydiidae) ZooKeys, (709): 17-56. doi

Images

Figure 1. A–M Features of male Eucorydia Hebard A head B maxillary palpus C antenna D labrum E arolia F pronotum G eversible gland on abdomen H venation of tegmen I venation of wing J T8, dorsal K supra-anal plate, ventral L subgenital plate, ventral M genitalia, dorsal.  Figure 7. A–Q Eucorydia species from China A–E E. yunnanensis: A–C holotype, male D–E male, from Anshun, Guizhou F–G E. pilosa sp. n. male holotype from Xiaoheijiang, Yunnan H–I E. guilinensis sp. n. male holotype from Guilin, Guangxi J–K E. tangi sp. n. male holotype from Mayanghe, Guizhou L–O E. linglong sp. n.: L–M male holotype from Mt. Jianfengling, Hainan N–O female paratype from Shuolong, Guangxi P–Q E. sp. 2, female from Xiaoheijiang, Yunnan. Scale bars: 1 mm.  Figure 9. A–J Habitus of Eucorydia species A–C male holotype of E. xizangensis D–F male holotype of E. hilaris [D–F photographed by Zong-Qing Wang, copyright The Natural History Museum, United Kingdom (NHM)] G–J E. splendida sp. n.: G–H male holotype I–J female paratype [I–J photographed by Jia-Zhi Zhang]. Scale bars 10 mm.  Figure 11. A–N Eucorydia species outside China A–G E. aenea: A–C lectotype of Corydia aenea, male D–E male, from east India F–G female, from Palon, Myanmar [A–G © by Natural History Museum Vienna, NOaS Image Collection, Harald Bruckner, published with permission] H–K E. forceps: H–J holotype of Corydia forceps, male [H–J photographed by Katherine Child and provided by Amoret Spooner, copyright Oxford University Museum of Natural History, Oxford (OUM)] K original figure of Corydia forceps in Hanitsch (1915) L–N holotype of Eucorydia gemma, male [L–N provided by Jason Weintraub, copyright by the Academy of Natural Sciences of Drexel University, Philadelphia, United States (ANSP)]. Scale bars 10 mm, A–G, K without scale bar.  Figure 12. A–I Eucorydia species outside China A–C holotype of Corydia coerulea, male D–F holotype of Eucorydia tristis, female [A–F photographed by Katherine Child and provided by Amoret Spooner, copyright Oxford University Museum of Natural History, Oxford (OUM)] G–I original figures of Eucorydia multimaculata in Bruijning (1948), male: G tegmen H wing I head. Scale bars 10 mm.  Figure 13. A–K Eucorydia species outside China A–G E. plagiata: A–C holotype of Corydia ornata, male [A–C photographed by Peter Schwendinger, copyright Museum of Natural History, Geneva, Switzerland (GMNH)] D–F lectotype of Corydia plagiata, female [D–F photographed by Zong-Qing Wang, copyright by The Natural History Museum, United Kingdom (NHM)] G original figure of Corydia elegans in Brunner von Wattenwyl (1893) H–K E. maxwelli: H–J type of Corydia maxwelli, female K original figure of male Corydia maxwelli in Hanitsch (1915) [H–J photographed by Katherine Child and provided by Amoret Spooner, copyright Oxford University Museum of Natural History, Oxford (OUM)]. Scale bars 10 mm.  Figure 14. A–D habitats of E. linglong sp. n.: A male, Manhao, Yunnan B male, Cuc-Phuong National Park​, Vietnam C female, Shuolong, Guangxi D environment in Shuolong, Guangxi E–I habitats of E. dasytoides: E habitat in Mingfenggu, Mt. Jianfengling, Hainan F a female with ootheca under lab conditions G a male from Taiwan H a nymph under lab conditions I a newly captured male from Mt. Jianfengling J–K E. ornata from India: J male from Madhya Pradesh K female from Maharashtra L–N habitats of E. hilaris: L male from Lvchun, Yunnan M–N newly-collected female and the tree where captured, Pu’er, Yunnan [Photograph A by Jin Chen; B by Eduard Jendek; C by Ye Liu; D by Yi-Zhou Liu; G by Dash Huang; J–K by Aniruddha Dhamorikar; L by Jian-Yun Wang; M–N by Chao Li; the rest by Lu Qiu].