Revision of the New World Ceratoculicoides Wirth & Ratanaworabhan (Diptera, Ceratopogonidae, Ceratopogonini) Fasbender, Andrew European Journal of Taxonomy 2023 2023-06-26 875 159 202 Fasbender, 2023 Fasbender 2023 [586,904,599,626] Insecta Ceratopogonidae Ceratoculicoides Animalia Diptera 27 186 Arthropoda species pacificus sp. nov.   urn:lsid:zoobank.org:act: 8C193FC1-C09F-4305-9EC8-17544078662A  Figs 1–3, 4b, 6c,  8g–i, 12a–b    Diagnosis  Male   Ceratoculicoides pacificus sp. nov.can be separated from congeners by the following combination of characters: femora and tibiae brown; apices of parameres acute, tapering distally; aedeagus lateral margins convex, medial apex of aedeagus with hyaline incision, posterolateral spines elongate, 0.5 width of apex of aedeagus ( Fig. 8i).  Female Only species of  Ceratoculicoideswith the following combination of characters: FR 1.62–1.72; femora and tibiae brown, wing length 1.5–1.8 mm; 2 major spermathecae, largest 88–96; medial margin of 9 thsternite deeply concave.    Etymology The specific epithet ‘  pacificus’ is a Latin adjective referring to ‘peacemaking’ or ‘peacefulness’. This epithet is in reference to this species inhabiting the coastal Pacific Northwest region.    Material examined    Holotype  CANADA• ♂; British Columbia, Cowichan District,  23 kmNW of Port Renfrew, Upper Carmanah Valley;  21 Jun.–3 Jul. 1991; N. Winchesterleg.; CNCI.    Paratypes  CANADA• 10 ♂♂, 2 ♀♀; same collection data as for holotype; CNCI•  3 ♂♂, 1 ♀; same collection data as for holotype;  4–15 Jul. 1991; CNCI•  3 ♀♀; same collection data as for holotype;  31 Jul.–11 Aug. 1991; CNCI.  Other material   CANADA–  British Columbia• 1 ♀; East Sooke Pk.  20 kmSW of Victoria;  31 Jul.–14 Aug. 1984; R. A. Canningsleg.; CNCI•  1 ♂; same collection data as for preceding;  29 Jun.–18 Jul. 1989; A. Borkentleg.; CNCI•  1 ♀; same collection data as for preceding;  18–26 Jul. 1989; CNCI•  1 ♂; same collection data as for preceding;  12.5 kmNWof Gold River, coll. A. Borkent;  18 Jul. 1991; CNCI•  2 ♀♀; Lake Cowichan;  26 Jul. 1979; J. Smithleg.; CNCI•  1 ♂;  25 kmWof Lake Cowichan;  8 Jul. 1991; A. Borkentleg.; CNCI•  1 ♂;  33 kmNWof Lake Cowichan;  9 Jul. 1991; A. Borkentleg.; CNCI•  2 ♀♀;  2.3 kmNWof Lake Cowichan, South Shore Rd.;  19–28 Jul. 1985; I. M. Smithleg.; CNCI•  1 ♀;  5 kmNEof Port Renfrew;  8 Jul. 1991; A. Borkentleg.; CNCI•  1 ♂; Ucluelet;  15–20 Jul. 1979; I. M. Smithleg.; CNCI.  USA• 1 ♂; Oregon, Benton Co., Mary’s Peak,  21 kmNWof Corvallis;  19 Jul. 1985; A. Borkentleg.; CNCI•  1 ♂; Washington, Kittatas Co., Okanagan-Wenatchee National Forest, DeRoux Forest Campground;  11 Aug. 1971; Goedenand Gurneyleg.; light trap; originally identified as  C. longipennis; USNM•  1 ♂, 1 ♀; same collection data as for preceding; Olympic National Park; CNCI.    Description  Male  MEASUREMENTS(n = 5). Head width 327–349(339); flagellomeres 49–53(51), 29–36(32), 26–30(27), 21–33(29), 25–29(28), 27–30(30), 25–31(29), 27–30(30), 30–35(32), 29–37(33), 84–102(96), 66– 75(71), 79–88(81); AR 0.89–1.02(1.00); FR (n = 1) 1.67; wing length 1.14–1.34(1.22) mm; wing width 0.37–0.45(0.42) mm; costal ratio (n = 1) 0.50; GCR 2.1–2.2(2.1); GSR 1.0–1.1(1.1); aedeagus ratio 0.83–1.0(0.91).  THORAX. Dorsocentral punctations prominent and interspersed in posterior half of dorsocentral setae. Legs with femora and tibiae brown.  GENITALIA( Fig. 8g–i). Distal portion of parameres tapering gradually to acute apex. Aedeagus lateral margins convex, rounded, posterior margin convex, tapering posteriorly to medial notch and acute hyaline incision; elongate acute posterolateral point at transition of posterior and lateral margin, spine length 0.5 times width of aedeagus; posteriorly directed apical point adjacent to medial notch.  Female  MEASUREMENTS(n = 5). Head width (n = 3) 310–360(343); flagellomeres (n = 3) 37–43(40), 23–27(23), 27–29(29), 29–32(30), 32–36(36), 32–36(33), 34–38(37), 36–38(38), 51–57(56), 50–53(53), 58–63(60), 55–62(56), 69–76(72); AR 0.73–0.82(0.78); FR 1.62–1.72(1.65); wing length 1.57–1.84(1.63) mm; wing width 0.6–0.64(0.62) mm; costal ratio (n = 1) 0.53; spermathecal length 88–96(93); spermathecal width 80–91(81); spermathecal neck 16–26(23); spermatheca/neck ratio 0.24.  THORAX. Legs with femora and tibiae brown.  GENITALIA( Fig. 12a–b). 9 thsternite anterior branch truncate, apices widely separated; base of posterior branch directed posteriorly, distal half curving medially, tip usually rounded, sometimes with a minute hook at apex. 2 major spermathecae.    Distribution  British Columbia( Canada), California, Oregon, Washington( USA).    Remarks Females of this species are similar in size to the female holotypeof  C.longipennis, but the geographic disjunction between the type locality and the range of  C. pacificusargues against their conspecificity. I believe that the stability of nomenclature is better served by describing this taxon under a new name rather than assigning this morphospecies to  C. longipennisbased on spurious evidence, especially as another male morphospecies, sp. M1, has as much or more evidence suggesting it is the male of  C. longipennis. Females of this species are the only  Ceratoculicoidesin western North America with spermathecae>80 μm long, but the other regional females are poorly known and this character may not be diagnostic. Males can be distinguished from all other  Ceratoculicoidesby their aedeagus having convex lateral and posterior margins, long (>0.5× width of main body of the aedeagus) posterolateral points, and acute hyaline medial incision flanked by short triangular apical points well separated from the posterolateral points ( Fig. 8i). 4135858314 1991-06-21 1991-07-03 1991-06-21 CNCI N. Winchester Canada Upper Carmanah Valley Cowichan District 27 186 1 1 British Columbia holotype 4436926301 [234,359,1524,1550] 1991-06-21 1991-07-03 1991-06-21 CNCI N. Winchester Canada CANADA Cowichan District 27 186 12 2 10 British Columbia paratype 4135858373 1991-07-04 1991-07-15 1991-07-04 CNCI N. Winchester Canada Upper Carmanah Valley Cowichan District 27 186 4 1 3 British Columbia paratype 4135858337 1991-07-31 1991-08-11 1991-07-31 CNCI N. Winchester Canada Upper Carmanah Valley Cowichan District 27 186 3 3 British Columbia paratype 4135858366 1984-07-31 1984-08-14 1984-07-31 CNCI R. A. Cannings Canada East Sooke Pk. 27 186 1 1 British Columbia 4135858362 1989-06-29 1989-07-18 1989-06-29 CNCI A. Borkent Canada East Sooke Pk. 27 186 1 1 British Columbia 4135858349 [343,1130,1813,1840] 1989-07-18 1989-07-26 1989-07-18 CNCI A. Borkent Canada East Sooke Pk. 27 186 1 1 British Columbia 4135858369 1991-07-18 1989-07-26 1989-07-18 CNCI A. Borkent Canada Gold River 27 186 1 1 British Columbia 4135858306 1979-07-26 CNCI J. Smith Canada Lake Cowichan 27 186 2 2 4135858364 1991-07-08 CNCI A. Borkent Canada Lake Cowichan 27 186 1 1 4135858380 [339,1162,1924,1951] 1991-07-09 CNCI A. Borkent Canada Lake Cowichan 27 186 1 1 4135858348 1985-07-19 1985-07-28 1985-07-19 CNCI I. M. Smith Canada Lake Cowichan 27 186 2 2 4135858350 1991-07-08 CNCI A. Borkent Canada Port Renfrew 27 186 1 1 4135858334 [740,1394,1998,2025] 1979-07-15 1979-07-20 1979-07-15 CNCI I. M. Smith Canada Ucluelet 27 186 1 1 4135858360 1985-07-19 CNCI A. Borkent United States of America Benton Co. Mary's Peak 28 187 1 1 Oregon 4135858311 1971-08-11 light trap USNM Goeden & Gurney United States of America Kittatas Co. DeRoux Forest Campground Okanagan-Wenatchee National Forest 28 187 1 1 Washington 4135858376 [299,1230,375,402] 1971-08-11 CNCI Goeden & Gurney United States of America Kittatas Co. Olympic National Park Okanagan-Wenatchee National Forest 28 187 2 1 1 Washington